trans.c (Pragma_to_gnu): Push a diagnostics state for pragma Warnings (Off) before...

[gcc.git] / gcc / ada / ChangeLog

2019-12-18  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (Pragma_to_gnu) <Pragma_Warnings>: Push a
        diagnostics state for pragma Warnings (Off) before turning off all
        the warnings and only pop it for pragma Warnings (On).

2019-12-18  Justin Squirek  <squirek@adacore.com>

        * sem_ch6.adb (Analyze_Function_Return): Modify handling of
        extended return statements to check accessibility of access
        discriminants.
        (Check_Aggregate_Accessibility): Removed.
        (Check_Return_Obj_Accessibility): Added to centralize checking
        of return aggregates and subtype indications in the case of an
        extended return statement.

2019-12-18  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-regpat.adb (Parse_Literal, Parse_Piece): Ensure
        Expr_Flags is always fully initialized.

2019-12-18  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-atopar.ads, libgnat/s-atopex.ads (Atomic_Type): Can
        now be marked Atomic. This requires marking the unit Ada 202x.

2019-12-18  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-nbnbin.ads, libgnat/a-nbnbin.adb,
        libgnat/a-nbnbre.ads, libgnat/a-nbnbre.adb: Replace
        Optional_Big_* types by a simple check and exception raise in
        Get_Bignum.
        (Set_Bignum): Arg should be 'out' and not 'in out'.
        (Invalid_Big_Integer, No_Big_Real): Removed.
        (Is_Valid): Now convention Intrinsic.

2019-12-18  Piotr Trojanek  <trojanek@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst,
        doc/gnat_rm/obsolescent_features.rst,
        doc/gnat_ugn/gnat_and_program_execution.rst, exp_attr.adb,
        exp_ch9.adb, init.c, libgnat/s-valrea.adb, par-ch6.adb,
        sem_attr.adb, sem_ch4.adb, sem_util.ads: Fix trivial typos.
        * gnat_rm.texi, gnat_ugn.texi: Regenerate.

2019-12-18  Gary Dismukes  <dismukes@adacore.com>

        * sem_res.adb (Resolve_Type_Conversion): Add handling for access
        types with designated operand and target types that are
        referenced in places that have a limited view of an interface
        type by retrieving the nonlimited view when it exists.  Add ???
        comments related to missing limited_with_clause handling for
        Target (in the non-access case).

2019-12-18  Ed Schonberg  <schonberg@adacore.com>

        * par-ch12.adb (P_Formal_Derived_Type_Definition): In Ada_2020
        the keyword WITH can indicate the start of aspect specifications
        and not a private type extension.
        * sem_ch12.adb (Analyze_Formal_Type): Indicate that it is a
        first subtype.
        (Instantiate_Type): New procedure
        Check_Shared_Variable_Control_Aspects to verify matching rules
        between formal and actual types. Note that an array type with
        aspect Atomic_Components is considered compatible with an array
        type whose component type is Atomic, even though the array types
        do not carry the same aspect.
        * sem_ch13.adb (Analyze_One_Aspect): Allow shared variable
        control aspects to appear on formal types.
        (Rep_Item_Too_Early): Exclude aspects on formal types.
        * sem_prag.adb (Mark_Type): Handle properly pragmas that come
        from aspects on formal types.
        (Analyze_Pragma, case Atomic_Components): Handle formal types.

2019-12-18  Eric Botcazou  <ebotcazou@adacore.com>

        * cstand.adb (Create_Standard): Remove duplicate line and
        adjust.

2019-12-18  Javier Miranda  <miranda@adacore.com>

        * debug.adb: Document -gnatd_K as a reserved switch for the
        detection of known problem issues of previous releases.

2019-12-18  Ghjuvan Lacambre  <lacambre@adacore.com>

        * par-ch13.adb: Check if declarations allow aspect
        specifications.

2019-12-18  Piotr Trojanek  <trojanek@adacore.com>

        * einfo.ads (Is_Ghost_Entity): Fix typo in comment.

2019-12-18  Eric Botcazou  <ebotcazou@adacore.com>

        * layout.adb (Layout_Type): In the case of composite types, do
        not copy the Esize onto the RM_Size if the latter is not set.
        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Type>:
        Also cap the alignment if an Object_Size clause has been
        specified.  Pass VAR_DECL in the call to validate_size for the
        Esize of a type.
        (validate_size): Be prepared to give an error on an Object_Size
        clause.

2019-12-18  Eric Botcazou  <ebotcazou@adacore.com>

        * einfo.ads (Handling of Type'Size Value): Add references to the
        introduction of Object_Size in Ada 2020.
        * sem_eval.adb (Subtypes_Statically_Match): Likewise.

2019-12-18  Bob Duff  <duff@adacore.com>

        * sem_ch3.adb (Derive_Subprogram): Do not set the
        Requires_Overriding flag in the above-mentioned case.

2019-12-18  Bob Duff  <duff@adacore.com>

        * sem_ch8.adb (Note_Redundant_Use): It was already checking for
        a use clause in the visible part of the child. Add an additional
        check for a use clause in the context clause of the child.

2019-12-16  Bob Duff  <duff@adacore.com>

        * errout.adb (Handle_Serious_Error): Disable the above-mentioned
        warnings.

2019-12-16  Bob Duff  <duff@adacore.com>

        * errout.adb, errout.ads: Improve comments.

2019-12-16  Bob Duff  <duff@adacore.com>

        * sem_util.ads: Minor comment fix.

2019-12-16  Bob Duff  <duff@adacore.com>

        * errout.ads, errout.adb (Is_Size_Too_Small_Message): Check for
        "size for" instead of "size for& too small, minimum allowed is
        ^".

2019-12-16  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch13.adb (Analyze_Attribute_Definition_Clause): Set only
        the RM_Size on the subtype built for a Component_Size clause
        when the component type is a biased integer type.

2019-12-16  Arnaud Charlet  <charlet@adacore.com>

        * socket.c: Shutdown warning.

2019-12-16  Arnaud Charlet  <charlet@adacore.com>

        * libgnarl/s-tataat.ads (Deallocator): Mark as Favor_Top_Level.

2019-12-16  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-aotase.adb, libgnat/s-aotase.ads,
        libgnat/s-atoope.ads, libgnat/s-atopar.adb,
        libgnat/s-atopar.ads, libgnat/s-atopex.adb,
        libgnat/s-atopex.ads: New files.
        * libgnat/s-atopri.ads: Add new intrinsics.
        * Makefile.rtl: Add new runtime files.
        * impunit.adb: Add new units to Ada 2020 list.

2019-12-16  Eric Botcazou  <ebotcazou@adacore.com>

        * freeze.adb (Check_Strict_Alignment): Remove new check on
        Has_Aliased_Components for array types.

2019-12-16  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch4.adb (Try_Container_Indexing): In the case of a derived
        container type, use the base type to look for candidate indexing
        operations, because the object may be a constrained subtype or
        itype with no explicit declaration.  Candidate indexing
        operations are found in the same scope and list of declarations
        as the declaration of the base type.

2019-12-16  Ed Schonberg  <schonberg@adacore.com>

        * scng.adb (Scan): In Ada2020, a left-bracket indicates the
        start of an homogenous aggregate.
        * par-ch4.adb (P_Reduction_Attribute_Reference): New procedure.
        (P_Aggregate): Recognize Ada2020 bracket-delimited aggregates.
        (P_Primary): Ditto.
        * par-util.adb (Comma_Present): Return false on a right bracket
        in Ada2020, indicating the end of an aggregate.
        * snames.ads-tmpl: Introduce Name_Reduce and Attribute Reduce.
        * sinfo.ads, sinfo.adb (Is_Homogeneous_Aggregate): New flag on
        aggregates, to designate an Ada2020 array or container aggregate
        that is bracket-delimited in the source.
        * sem_attr.adb (Analyze_Attribute): For attribute Reduce, verify
        that two arguments are present, and verify that the prefix is a
        stream or an object that is iterable (array or contrainer).
        (Resolve_Attribute): For attribute Reduce, resolve initial value
        with the type of the context. Type-checking of element type of
        prefix is performed after expansion.
        * exp_attr.adb (Expand_N_Attribute_Reference): For attribute
        Reduce, expand into a loop: a) If prefix is an aggregate with a
        single iterated component association, use its iterator
        specification to construct a loop, b) If prefix is a name, build
        a loop using an element iterator loop.
        * scans.ads: Add brackets tokens.

2019-12-16  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity): Adjust calls to
        validate_size.
        (gnat_to_gnu_component_type): Likewise.
        (gnat_to_gnu_field): Likewise and pass string for error messages.
        (components_need_strict_alignment): Remove test on Is_Aliased and
        add test for the independence of the component.
        (validate_size): Add S1 and S2 string parameters and use them to
        give better error messages for fields.  Tweak a couple of messages.
        * einfo.ads (Has_Independent_Components): Document more cases.
        (Is_Independent): Likewise.
        (Strict_Alignment): Document new semantics.
        * exp_ch9.adb (Install_Private_Data_Declarations): Also set the
        Is_Independent flag along with Is_Aliased on the renaming
        entity.
        * freeze.adb (Size_Known): Remove always-false test and add test
        for the strict-alignment on the record type.  Remove redundant
        tests and add test for the strict-alignment on the component
        type.
        (Check_Strict_Alignment): Set the flag if the type is by-ref and
        remove now redundant conditions.  Set the flag on an array type
        if it has aliased components.  In the record type case, do not
        set type for C_Pass_By_Copy convention.
        (Freeze_Array_Type): Move code checking for conflicts between
        representation aspects and clauses to before specific handling
        of packed array types. Give a warnind instead of an error for a
        conflict with pragma Pack.  Do not test Has_Pragma_Pack for the
        specific handling of packed array types.
        (Freeze_Record_Type): Move error checking of representation
        clause to...
        (Freeze_Entity): ...here after Check_Strict_Alignment is called.
        * sem_aggr.adb (Array_Aggr_Subtype): Also set the Is_Independent
        flag along with Is_Aliased on the Itype.
        * sem_ch13.adb (Check_Record_Representation_Clause): Do not set
        the RM size for a strict-alignment type.
        * sem_ch3.adb (Add_Interface_Tag_Components): Also set the
        Is_Independent flag along with Is_Aliased on the tag.
        (Add_Interface_Tag_Components): Likewise on the offset.
        (Analyze_Component_Declaration): Likewise on the component.
        (Analyze_Object_Declaration): Likewise on the object.
        (Constrain_Array): Likewise on the array.
        (Record_Type_Declaration: Likewise on the tag.
        (Array_Type_Declaration): Also set the
        Has_Independent_Components flag along with
        Has_Aliased_Components on the array.
        (Copy_Array_Base_Type_Attributes): Copy
        Has_Independent_Components.
        (Copy_Array_Subtype_Attributes): Copy Is_Atomic, Is_Independent
        and Is_Volatile_Full_Access.
        (Analyze_Iterator_Specification): Set Is_Independent on the loop
        variable according to Independent_Components on the array.
        * sem_ch5.adb: Likewise.
        * sem_ch6.adb (Process_Formals): Also set the Is_Independent
        flag along with Is_Aliased on the formal.

2019-12-16  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch8.adb (Analyze_Object_Renaming): Set Atomic, Independent
        and Volatile_Full_Access aspects on the entity of the renaming
        the same way as the Volatile aspect is set.
        * sem_util.ads (Is_Atomic_Object_Entity): Move declaration to...
        (Is_Independent_Object): New function.
        (Is_Volatile_Full_Access_Object): Likewise.
        * sem_util.adb (Is_Atomic_Object_Entity): ...here.
        (Prefix_Has_Atomic_Components): Minor tweak.
        (Is_Atomic_Object): Test Is_Atomic on the Etype uniformly.
        (Is_Atomic_Or_VFA_Object): Call Is_Volatile_Full_Access_Object.
        (Is_Independent_Object): New predicate.
        (Is_Subcomponent_Of_Atomic_Object): Remove redundant test.
        (Is_Volatile_Full_Access_Object): New predicate.
        (Is_Volatile_Prefix): Rename into...
        (Prefix_Has_Volatile_Components): ... and call
        Is_Volatile_Object.
        (Object_Has_Volatile_Components): Delete.
        (Is_Volatile_Object): Simplify.
        * gcc-interface/trans.c (node_is_volatile_full_access): Adjust
        comment.

2019-12-16  Bob Duff  <duff@adacore.com>

        * par.adb: Add Scopes function to do range checking on the scope
        stack.  Call Scopes all over the parser.  Add
        SIS_Aspect_Import_Seen flag.
        * par-ch6.adb (P_Subprogram): Initialize SIS_Aspect_Import_Seen
        to False at the start, and check it at the end.
        * par-ch13.adb (Get_Aspect_Specifications): Set
        SIS_Aspect_Import_Seen to True when appropriate.
        * par-ch10.adb, par-ch12.adb, par-ch2.adb, par-ch3.adb,
        par-ch5.adb, par-ch7.adb, par-ch9.adb, par-endh.adb,
        par-util.adb: Call Scopes.

2019-12-16  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_prag.adb (Atomic_Components): Remove local variable and
        fix consistency issues.  Call Component_Type on the Etype of E.
        (Independent_Components): Remove local variable.
        * sem_util.adb (Is_Subcomponent_Of_Atomic_Object): Properly deal
        with prefixes that are access values.
        * gcc-interface/trans.c (atomic_acces_t): New enumeral type.
        (node_is_atomic) <N_Indexed_Component>: Test the prefix.
        (node_has_volatile_full_access): Rename into...
        (node_is_volatile_full_access): ...this.
        (node_is_component): New predicare.
        (gnat_strip_type_conversion): Delete.
        (outer_atomic_access_required_p): Likewise.
        (atomic_access_required_p): Rename into...
        (get_atomic_access): ...this.  Implement the 3 different semantics
        of Atomic and Volatile_Full_Access.
        (simple_atomic_access_required_p): New predicate.
        (Call_to_gnu): Remove outer_atomic_access parameter and change the
        type of atomic_access parameter to atomic_acces_t.  Replace call to
        atomic_access_required_p with simple_atomic_access_required_p for
        the in direction and call get_atomic_access for the out direction
        instead of [outer_]atomic_access_required_p.
        (lhs_or_actual_p): Constify local variables.
        (present_in_lhs_or_actual_p): Likewise.
        (gnat_to_gnu) <N_Identifier>: Replace call to atomic_access_required_p
        with simple_atomic_access_required_p.
        <N_Explicit_Dereference>: Likewise.
        <N_Indexed_Component>: Likewise.
        <N_Selected_Component>: Likewise.
        <N_Assignment_Statement>: Call get_atomic_access for the name instead
        of [outer_]atomic_access_required_p.  Adjust call to Call_to_gnu.
        <N_Function_Call>: Adjust call to Call_to_gnu.
        (get_controlling_type): Fix typo in comment.

2019-12-16  Eric Botcazou  <ebotcazou@adacore.com>

        * fe.h (Ada_Version_Type): New typedef.
        (Ada_Version): Declare.
        * opt.ads (Ada_Version_Type): Add Convention C and WARNING line.
        (Ada_Version): Add WARNING line.
        (Exception_Mechanism_Type): Likewise.

2019-12-16  Gary Dismukes  <dismukes@adacore.com>

        * checks.adb, sem_util.adb: Minor reformatting and U.S. spelling
        adjustment.

2019-12-16  Bob Duff  <duff@adacore.com>

        * sem_ch10.adb (Analyze_Subunit): Give an error if the subunit
        is not a proper body. This hides the confusing "duplicate body"
        message that was previously given.

2019-12-16  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch8.adb (Expand_N_Object_Renaming_Declaration): Document
        third special case of renamings requiring special handling.
        (Evaluation_Required): Return true for an atomic or VFA prefix.

2019-12-16  Ed Schonberg  <schonberg@adacore.com>

        * checks.adb (Apply_Float_Conversion_Check): Use node of type
        conversion and not its parent, when inserting the declaration
        for the temporary that hold the result of the conversion.
        Previously the declaration was inserted above the parent of the
        conversion, apparently as a small optimization for the
        subsequent traversal in Insert_Actions.  Unfortunately a similar
        optimization takes place in Insert_Actions, assuming that the
        insertion point must be above the expression that creates the
        actions to insert.  This is not correct in the presence of
        conditional expressions (i.e.  since Ada2012), where the
        insertion must be in the list of actions attached to the current
        alternative.

2019-12-16  Bob Duff  <duff@adacore.com>

        * sem_attr.adb (Analyze_Attribute): Use Known_RM_Size. But we
        still need Size_Known_At_Compile_Time, because when the size
        really is known, sometimes only one or the other of these is
        True.

2019-12-16  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_util.adb (Is_Atomic_Or_VFA_Object): Also return true for
        components whose type is Volatile_Full_Access or which are
        subject to the aspect/pragma individually.
        * sem_util.ads (Is_Atomic_Object_Entity): Small comment fix.

2019-12-16  Yannick Moy  <moy@adacore.com>

        * exp_ch6.adb: Fix comment.
        * sem_res.adb (Resolve_Call): Do not check No_Recursion
        restriction or indirectly No_Secondary_Stack restriction, when
        inside an ignored ghost subprogram.

2019-12-16  Arnaud Charlet  <charlet@adacore.com>

        * impunit.adb: Add a-nbnbin, a-nbnbre, a-nubinu to Ada 2020
        units.
        * Makefile.rtl: Enable new file.
        * libgnat/a-nbnbin.adb, libgnat/a-nbnbin.ads,
        libgnat/a-nbnbre.adb, libgnat/a-nbnbre.ads,
        libgnat/a-nubinu.ads: New files. Provide default standalone
        implementation of Ada.Numerics.Big_Numbers.Big_* based on
        System.Generic_Bignum.
        * libgnat/a-nbnbin__gmp.adb: Alternate implementation of
        Ada.Numerics.Big_Numbers.Big_Integers based on GMP. Not enabled
        for now.
        * libgnat/s-bignum.ads, libgnat/s-bignum.adb: Now a simple
        wrapper on top of s-genbig.ads.
        * libgnat/s-genbig.ads, libgnat/s-genbig.adb: New files, making
        s-bignum generic for reuse in Ada.Numerics.Big_Numbers.

2019-12-16  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/building_executable_programs_with_gnat.rst:
        Correct documentation of -gnatw_C switch
        * gnat_ugn.texi: Regenerate.

2019-12-16  Joel Brobecker  <brobecker@adacore.com>

        * doc/gnat_ugn/building_executable_programs_with_gnat.rst
        (_Switches_for_gnatbind): Reword the section explaining the
        impact of -minimal on debugging.
        * gnat_ugn.texi: Regenerate.

2019-12-16  Gary Dismukes  <dismukes@adacore.com>

        * libgnat/g-exptty.adb, libgnat/g-exptty.ads: Typo fixes and
        minor reformatting.

2019-12-16  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch6.adb (Requires_Atomic_Or_Volatile_Copy): New predicate.
        (Expand_Actuals): Use it to decide whether to add call by copy
        code as per the RM C.6(19) clause.
        * fe.h (Is_Atomic_Object): Remove.
        (Is_Volatile_Object): Likewise.
        * sem_util.ads (Is_Atomic_Object): Remove WARNING note.
        (Is_Volatile_Object): Likewise.
        * gcc-interface/trans.c (atomic_or_volatile_copy_required_p): Delete.
        (Call_to_gnu): Do not implement the  RM C.6(19) clause.

2019-12-16  Ghjuvan Lacambre  <lacambre@adacore.com>

        * sem_ch12.adb (Validate_Access_Subprogram_Instance): Add
        Can_Never_Be_Null checks.

2019-12-16  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst (VFA): Document
        extension of the no-aliasing rule to any subcomponent.
        * freeze.adb (Freeze_Object_Declaration): Small comment tweak.
        (Freeze_Record_Type): Do not deal with delayed aspect
        specifications for components here but...
        (Freeze_Entity): ...here instead.
        * sem_ch12.adb (Instantiate_Object): Improve wording of errors
        given for legality rules in C.6(12) and implement the new rule
        in C.6(13).
        * sem_res.adb (Resolve_Actuals): Likewise.
        * sem_prag.adb (Check_Atomic_VFA): New procedure implementing
        the new legality rules in C.6(13).
        (Process_Atomic_Independent_Shared_Volatile): Call
        Check_Atomic_VFA to check the legality rules.  Factor out code
        marking types into...
        (Mark_Type): ...this new procedure.
        (Check_VFA_Conflicts): Do not check the legality rules here.
        (Pragma_Atomic_Components): Call Check_Atomic_VFA on component
        type.
        * sem_util.ads (Is_Subcomponent_Of_Atomic_Object): Declare.
        * sem_util.adb (Is_Subcomponent_Of_Atomic_Object): New
        predicate.
        * gnat_rm.texi: Regenerate.

2019-12-13  Gary Dismukes  <dismukes@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst: Minor
        rewording of one sentence.
        * gnat_rm.texi: Regenerate.

2019-12-13  Arnaud Charlet  <charlet@adacore.com>

        * exp_unst.adb (Unnest_Subprogram): Account for trees produced
        by Annex E constructs.

2019-12-13  Ghjuvan Lacambre  <lacambre@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst: Update
        Initialize_Scalars documentation.
        * gnat_rm.texi: Regenerate.

2019-12-13  Javier Miranda  <miranda@adacore.com>

        * sem_ch13.adb (Analyze_Aspect_Specification): Processing a
        precondition, if the expression is of the form A and then B, do
        not generate separate Pre/Post aspects for the separate clases
        when we are processing a generic unit. Required to avoid
        reporting spurious visibility errors on the instantiations.

2019-12-13  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_res.adb (Resolve_Actuals): Give canonical error for
        illegal case of atomic/volatile parameter also if the formal is
        aliased.

2019-12-13  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_util.ads (Is_Atomic_Object): Mention relevant RM clauses.
        * sem_util.adb (Is_Atomic_Object): For an indexed component,
        only look at the Has_Atomic_Components aspect of the prefix and
        do not recurse on it; for a selected component, do not look at
        the prefix.
        (Is_Atomic_Or_VFA_Object): Minor tweak.

2019-12-13  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/a-calfor.ads, libgnat/a-calfor.adb (Split_Duration):
        New procedure.
        (Split, Image): Use Split_Duration. Update Image spec.

2019-12-13  Javier Miranda  <miranda@adacore.com>

        * exp_unst.adb (Unnest_Subprogram): Generate an extra temporary
        to facilitate the C backend processing dereferences.

2019-12-13  Javier Miranda  <miranda@adacore.com>

        * sem_prag.adb (Analyze_Pragma): Propagate the
        Linker_Section_Attribute to the ultimate alias of the subprogram
        to facilitate the C backend processing this attribute.

2019-12-13  Yannick Moy  <moy@adacore.com>

        * sem_util.adb (Original_Aspect_Pragma_Name): Go through
        Original_Node for pragma.

2019-12-13  Piotr Trojanek  <trojanek@adacore.com>

        * exp_aggr.adb, exp_unst.adb: Minor fix typo in comment.

2019-12-13  Steve Baird  <baird@adacore.com>

        * sem_res.adb (Resolve, Valid_Conversion): Add Base_Type call
        when testing whether a type is a general access type.

2019-12-13  Javier Miranda  <miranda@adacore.com>

        * exp_ch4.adb (Expand_N_Unchecked_Type_Conversion): Generate an
        extra temporary for cases unsupported by the C backend.

2019-12-13  Steve Baird  <baird@adacore.com>

        * einfo.ads: Correct comment for Derived_Type_Link to reflect
        that fact that this function is now used for more than just
        generation of warnings.
        * sem_ch3.adb (Build_Derived_Type): Do not call
        Set_Derived_Type_Link if the derived type and the parent type
        are in different compilation units. Such a derivation cannot be
        a problematic "early" derivation (identifying these is what the
        Derived_Type_Link attribute is used for) and we don't like
        inter-unit references that go in the opposite direction of
        semantic dependencies.
        * sem_ch13.adb (Is_Type_Related_Rep_Item): A new function,
        analogous to the existing function Is_Operational_Item.
        (Rep_Item_Too_Late): Generate a hard error (with same text as
        the warning that was previously being generated) if the
        AI12-0109 legality rule is violated.

2019-12-13  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst: Minor tweak to
        Volatile_Full_Access wording in GNAT RM.
        * gnat_rm.texi: Regenerate.

2019-12-13  Gary Dismukes  <dismukes@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference,
        Attribute_Address): Suppress generation of a call to
        Base_Address in the case where the Address attribute is being
        used to initialize a corresponding component of an activation
        record.
        (Is_Unnested_Component_Init): New function to determine whether
        an attribute reference for Address is used to initialized a
        component of an activation record object that corresponds to the
        object denoted by the prefix of the attribute (an assignment
        used in support of unnesting for back ends like LLVM).

2019-12-13  Ed Schonberg  <schonberg@adacore.com>

        * sem_res.adb (Resolve): IF an entity reference is overloaded
        because its type has an Implicit_Dereference aspect, we must
        examine the discriminants of the type to determine whether an
        explicit dereference must be inserted for use in code
        generation. Previously this was done for other expressions but
        not for entity references by themselves.  This was sufficient to
        handle uses of the aspect in container handling and iteration,
        but not more generally.

2019-12-13  Javier Miranda  <miranda@adacore.com>

        * exp_disp.ads (Expand_Interface_Thunk): Adding one formal (the
        interface type).
        * exp_disp.adb (Expand_Interface_Thunk): Using the added formal
        to ensure the correct profile of the thunk generated for
        predefined primitives; in addition, the added formal is also
        used to perform a check that ensures that the controlling type
        of the thunk is the one expected by the GCC backend.
        (Make_Secondary_DT, Register_Primitive): Adding the new formal
        to the calls to Expand_Interface_Thunk.
        * exp_ch6.adb (Register_Predefined_DT_Entry): Adding the new
        formal to the call to Expand_Interface_Thunk.
        * exp_intr.adb (Expand_Unc_Deallocation): When deallocating a
        controlled type and the call to unchecked deallocation is
        performed with a pointer to one of the convered interface types,
        displace the pointer to the object to reference the base of the
        object to deallocate its memory.
        * gcc-interface/trans.c (maybe_make_gnu_thunk): Assert that the
        controlling type of the thunk is an interface type.

2019-12-13  Bob Duff  <duff@adacore.com>

        * exp_attr.adb (Is_Available): Remove this function, and replace
        all calls with RTE_Available. RTE_Available will return True if
        "not Configurable_Run_Time_Mode". Remove the "???" comment.

2019-12-13  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch7.adb (Analyze_Package_Body_Helper): Do not call
        Declare_Inherited_Private_Subprograms on s child body: the
        required operations have already been created when analyzing the
        corresponding package declaration. This prevents a redeclaration
        of inehrited operation, and a crash when inserting the new
        operation in the current scope.

2019-12-13  Yannick Moy  <moy@adacore.com>

        * sem_prag.adb (Analyze_Depends_In_Decl_Part,
        Analyze_Global_In_Decl_Part,
        Analyze_Refined_Depends_In_Decl_Part,
        Analyze_Refined_Global_In_Decl_Part, Check_Missing_Part_Of):
        Skip redundant checking involving visibility inside
        instantiations.

2019-12-13  Yannick Moy  <moy@adacore.com>

        * sem_res.adb (Resolve_Call): Prevent inlining inside while loop
        conditions.
        * sem_util.adb, sem_util.ads (In_While_Loop_Condition): New
        query function.

2019-12-13  Bob Duff  <duff@adacore.com>

        * impunit.ads: Add Ada_202X_Unit.
        * impunit.adb: Add a table Non_Imp_File_Names_2X analogous to
        the other tables. Add code to search this table.
        * opt.ads: Add Warn_On_Ada_202X_Compatibility flag, currently
        always True.
        * sem_ch10.adb (Analyze_With_Clause): Give a warning if an Ada
        2020 unit is with-ed when Ada_Version < Ada_2020.  Change 'if'
        to 'case': Full coverage rules rule.

2019-12-13  Bob Duff  <duff@adacore.com>

        * rtsfind.ads: Minor comment fix.

2019-12-13  Gary Dismukes  <dismukes@adacore.com>

        * sem_util.adb (Scope_Within): For the case of checking for a
        task type procedure, check the Implementation_Base_Type of Curr.
        (Scope_Within_Or_Same): For the case of checking for a task type
        procedure, check the Implementation_Base_Type of Curr.

2019-12-13  Arnaud Charlet  <charlet@adacore.com>

        * impunit.adb (Non_Imp_File_Names_12): Add
        Ada.Containers.Vectors.Generic_Parallel_Sorting.

2019-12-13  Justin Squirek  <squirek@adacore.com>

        * sem_res.adb (Resolve_Allocator): Add calls to
        Check_Cond_Expr_Accessibility when a conditional expression is
        found.
        (Check_Allocator_Discrim_Accessibility_Exprs): Created to
        recursively traverse a potentially compound conditional
        expression and perform accessibility checks for each
        alternative.
        * sem_util.adb (Dynamic_Accessibility_Level): Avoid use of
        original node of the expression in question so we can handle
        dynamic accessibility in the limited case of a constant folded
        conditional expression.

2019-12-13  Steve Baird  <baird@adacore.com>

        * exp_ch4.adb (Expand_N_Op_Eq.Is_Equality): Move this function
        from within Expand_N_Op_Eq.Find_Equality out to immediately
        within Expand_N_Op_Eq in order to give it greater visibility.
        Add a new Typ parameter (defaulted to Empty) which, if
        non-empty, means the function will return False in the case of
        an equality op for some other type.
        * (Expand_N_Op_Eq.User_Defined_Primitive_Equality_Op): A new
        function. Given an untagged record type, finds the corresponding
        user-defined primitive equality op (if any).  May return Empty.
        Ignores visibility.
        * (Expand_N_Op): For Ada2012 or later, check for presence of a
        user-defined primitive equality op before falling back on the
        usual predefined component-by-component comparison. If found,
        then call the user-defined op instead.

2019-12-13  Justin Squirek  <squirek@adacore.com>

        * sem_ch6.adb (Check_Overriding_Indicator): Modify condition to
        take into account the modification of the Is_Hidden flag within
        generic instances.
        (Verify_Overriding_Indicator): Add an exception for controlled
        primitives within an instance.

2019-12-13  Ed Schonberg  <schonberg@adacore.com>

        * sinfo.ads, sinfo.adb (Aspect_On_Partial_View,
        Set_Aspect_On_Partial_View): New flag for use by SPARK, to
        indicate whether an aspect that appears on a type declaration
        applies to the partial view of that type.
        * sem_ch13.adb (Analyze_Aspect_Specification): Set new flag
        appropriately.

2019-12-12  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Same_Reprewentation): if the actual in a call is
        a generic actual type, use its bsae type to determine whether a
        change of representastion may be necessary for proper parameter
        passing.

2019-12-12  Ed Schonberg  <schonberg@adacore.com>

        * sem_type.adb (Find_Unique_Type): A call to the universal
        access equality operator requires one operand to be a universal
        access, and the other to be an access type. There is no
        requirement, as previously implied by this routine, that
        pool-specific access types were illegal in this context.

2019-12-12  Steve Baird  <baird@adacore.com>

        * sem_ch6.adb
        (New_Overloaded_Entity.Check_Conforming_Paramters): Add new
        Conformance_Type parameter. With the value of
        Subtype_Conformant, the behavior of Check_Conforming_Parameters
        is unchanged.  The call in Matching_Entry_Or_Subprogram to
        instead passes in Type_Conformant. This corresponds to the use
        of "type conformant" in Ada RM 9.4(11.4/3).
        (New_Overloaded_Entity.Has_Matching_Entry_Or_Subprogram): Add
        new Normalized_First_Parameter_Type function to help in ignoring
        the distinction between protected and access-to-protected first
        parameters when checking prefixed-view profile matching. Replace
        computations of the type of the first parameter with calls to
        this function as appropriate.

2019-12-12  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch5.adb: (Analyze_Iterator_Specification): If the
        iteration is over a slice, complete the resolution of its
        bounds, which may be aebitrary expressions. The previous
        pre-analysis may have created itypes for the slice but has not
        performed the expansion that for example may introduce actions
        that specify explicit dereferences and run-time checks.

2019-12-12  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch8.adb: Improve error message for dispatching subprogram
        formals.

2019-12-12  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch9.adb (Build_Protected_Entry): Set the Scope of the new
        block to be the entity of the procedure created for the entry.

2019-12-12  Steve Baird  <baird@adacore.com>

        * sem_ch10.adb (Install_With_Clause): Check for the case of a
        circular dependency involving a predefined (or GNAT-defined)
        unit and handle that case by generating an appropropriate error
        message.

2019-12-12  Gary Dismukes  <dismukes@adacore.com>

        * sem_ch4.adb, sem_res.adb: Minor reformatting.

2019-12-12  Justin Squirek  <squirek@adacore.com>

        * sem_ch4.adb (Analyze_One_Call): Add condition to check for
        incorrectly resolved hidden controlled primitives.

2019-12-12  Ed Schonberg  <schonberg@adacore.com>

        * sem_res.adb: Fix processing of standard predefined operators.

2019-12-12  Piotr Trojanek  <trojanek@adacore.com>

        * libgnarl/a-dispat.ads (Yield): Update Global contract.

2019-12-12  Piotr Trojanek  <trojanek@adacore.com>

        * libgnat/g-altive.ads: Fix typo in comment.
        * bindo-graphs.adb: Fix repeated words in comment.
        * exp_ch4.adb: Likewise.
        * exp_ch5.adb: Likewise.
        * exp_ch7.adb: Likewise.
        * exp_pakd.adb: Likewise.
        * exp_unst.adb: Likewise.
        * exp_util.adb: Likewise.
        * freeze.adb: Likewise.
        * inline.adb: Likewise.
        * layout.adb: Likewise.
        * sem_ch12.adb: Likewise.
        * sem_ch13.adb: Likewise.
        * sem_ch4.adb: Likewise.
        * sem_ch9.adb: Likewise.
        * sem_elab.adb: Likewise.
        * doc/gnat_ugn/gnat_and_program_execution.rst: Fix repeated
        words in user documentation.
        * gnat_ugn.texi: Regenerate.

2019-12-12  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Expand_Size_Attribute): Look directly at the
        prefix to detect the bit-packed slices.  Apply the checks last
        in case the attribute needs to be processed by the back-end.
        * exp_ch4.adb (Expand_N_Slice): Do not create a temporary for
        a prefix of the Size attribute.

2019-12-12  Steve Baird  <baird@adacore.com>

        * sem_ch12.adb
        (Instantiate_Type.Validate_Derived_Type_Instance): Implement the
        legality check of AI12-0036

2019-12-12  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch10.adb (Analyze_Subunit): Fix spurious visibility error
        on subunit with optimization.

2019-12-12  Arnaud Charlet  <charlet@adacore.com>

        * raise-gcc.c (__gnat_personality_v0): Define for SEH.

2019-12-12  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch9.adb (Build_Protected_Entry): Analyze the block created
        to hold the declarations and statements of the protected entry
        body right after it's created, and then call Reset_Scopes_To on
        that block to reset the Scope of nested entities to the block
        scope.
        (Reset_Scope): Add handling for N_Freeze_Entity nodes, calling
        Reset_Scopes recursively on the Actions of such nodes. Also, for
        subprogram bodies that are encountered that might not have a
        separate declaration (such as type init procedures), reset the
        Scope of the subprogram's entity.

2019-12-12  Justin Squirek  <squirek@adacore.com>

        * sem_attr.adb (Analyze_Attribute): Add error message for
        invalid usage of Attribute_Result.

2019-12-12  Bob Duff  <duff@adacore.com>

        * sem_attr.adb (Eval_Attribute): Never mark T'Descriptor_Size as
        static, even if T is a static subtype, because otherwise we will
        request the value of the attribute, which will crash because we
        have not evaluated it.

2019-12-12  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch5.adb (Expand_N_Assognment_Statement): Extend the
        processing involving private types with unknown discriminants to
        handle the case where the full view of the type is an
        unconstrained array type.

2019-12-12  Bob Duff  <duff@adacore.com>

        * sem_ch4.adb (Transform_Object_Operation): Deal properly with
        prefix notation in instances.

2019-12-12  Claire Dross  <dross@adacore.com>

        * libgnat/a-cofove.adb, libgnat/a-cfinve.adb (Find_Index): Use
        Extended_Index for call to Last.

2019-12-12  Gary Dismukes  <dismukes@adacore.com>

        * sem_ch3.adb, sem_util.adb: Minor reformatting.

2019-12-12  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Update gnatmetric
        documentation for average lengths

2019-12-12  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch3.adb (Constrain_Access): Remove obsolete comments and
        warning concerning component types of an access type whose
        designated type is a constrained record type. (Such constraints
        were previously ignored). Set scope of itype for component to
        the scope of the enclosing record.
        * sem_ch4.adb: Remove call to Set_Ekind.
        * sem_util.adb (Build_Actual_Subtype_Of_Component): Handle
        components whose type is an access to a constrained
        discriminant, where the constraints may be given by the
        discriminants of the enclosing type. New subprogram
        Build_Access_Record_Constraint.

2019-12-12  Justin Squirek  <squirek@adacore.com>

        * exp_ch6.adb (Expand_Call_Helper): Added null case for
        'Loop_Entry, 'Old, and 'Result when calculating whether to
        create extra accessibility parameters.
        * sem_util.adb (Dynamic_Accessibility_Level): Added null case
        for 'Loop_Entry, 'Old, and 'Result when  calculating
        accessibility level based on access-valued attributes.  Also
        added special handling for uses of 'Loop_Entry when used in its
        indexed component form.

2019-12-12  Arnaud Charlet  <charlet@adacore.com>

        * raise-gcc.c: Remove references to VMS

2019-12-12  Eric Botcazou  <ebotcazou@adacore.com>

        * atree.ads, comperr.ads, debug.ads, einfo.ads, elists.ads,
        err_vars.ads, errout.ads, exp_ch11.ads, exp_code.ads,
        exp_dbug.ads, exp_tss.ads, exp_util.ads, lib.ads, namet.ads,
        nlists.ads, opt.ads, repinfo.ads, restrict.ads, scos.ads,
        sem_aggr.ads, sem_aux.ads, sem_eval.ads, sem_util.ads,
        sinfo.ads, sinput.ads, stringt.ads, targparm.ads, types.ads,
        urealp.ads warnsw.ads: Add WARNING line(s) in commentary.
        * atree.h, elists.h, namet.h, nlists.h, repinfo.h, scos.h,
        stringt.h, types.h, uintp.h, urealp.h: Tidy up.
        * fe.h: Likewise.  Document WARNING mark.

2019-12-12  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/g-comlin.ads (Get_Argument): New routine similar to
        original Get_Argument but with one more out parameter
        End_Of_Arguments.
        (Get_Arguments): Comment improved.
        * libgnat/g-comlin.adb (Get_Argument): Implementation taken from
        original Get_Argument and improved.
        (Get_Argument): Calls new routine Get_Argument with additional
        parameter.

2019-12-03  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils.c (potential_alignment_gap): Delete.
        (rest_of_record_type_compilation): Do not call above function.  Use
        the alignment of the field instead of that of its type, if need be.
        When the original field has variable size, always lower the alignment
        of the pointer type.  Reset the bit-field status of the new field if
        it does not encode a bit-field.

2019-12-03  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils.c (fold_convert_size): New function.
        (fold_bit_position): Invoke it to do further folding.

2019-12-03  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_subprog_type): With the Copy-In/
        Copy-Out mechanism, do not promote the mode of the return type to an
        integral mode if it contains a field on a non-integral type and even
        demote it for 64-bit targets.

2019-11-25  Eric Botcazou  <ebotcazou@adacore.com>

        PR ada/92362
        * gcc-interface/trans.c (gnat_to_gnu) <N_Attribute_Definition_Clause>:
        Use a temporary instead of clobbering the result with a freeze node.

2019-11-25  Eric Botcazou  <ebotcazou@adacore.com>

        PR ada/92575
        * expect.c (__gnat_expect_poll [VMS, HPUX]): Fix typo.

2019-11-06  Eric Botcazou  <ebotcazou@adacore.com>
            Alexandre Oliva  <oliva@adacore.com>

        * gcc-interface/misc.c (callgraph_info_file): Delete.

2019-10-27  Jakub Jelinek  <jakub@redhat.com>

        * locales.c (iso_3166): Add missing comma after "United-States".

2019-10-15  Arnaud Charlet  <charlet@adacore.com>

        * Makefile.rtl (a-except.o): Put -O1 earlier so that it can be
        overriden if needed by other variables.

2019-10-12  Eric Botcazou  <ebotcazou@adacore.com>

        PR ada/91995
        * sem_ch8.adb (Chain_Use_Clause): Remove second argument in calls
        to Defining_Entity.
        * sem_elab.adb (Find_Unit_Entity): Likewise.  Deal with N_Subunit
        here in lieu of in Defining_Entity.
        * sem_util.ads (Defining_Entity): Remove 2nd and 3th parameters.
        * sem_util.adb (Defining_Entity): Remove 2nd and 3th parameters,
        and adjust accordingly.  Deal with N_Compilation_Unit.

2019-10-11  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (elaborate_reference_1): Specifically deal with
        pointer displacement.

        * gcc-interface/decl.c (components_to_record): Use proper name.

        * gcc-interface/trans.c (Sloc_to_locus): Use standard types.

2019-10-11  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_field): Adjust again the packing
        for a field without strict alignment and with an oversized clause.

2019-10-11  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (annotate_value) <INTEGER_CST>: Really test the
        sign of the value when deciding to build a NEGATE_EXPR.
        <PLUS_EXPR>: Remove redundant line.
        <BIT_AND_EXPR>: Do the negation here.

2019-10-11  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (Gigi_Equivalent_Type) <E_Array_Subtype>: New
        case.  Return the base type if the subtype is not constrained.

2019-10-11  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Named_{Integer|Real}>:
        New case to deal with the definition of named numbers.
        <E_Variable>: Minor tweaks.  Set DECL_IGNORED_P on the CONST_DECL
        if a corresponding variable is built.
        * gcc-interface/trans.c (gnat_to_gnu) <N_Integer_Literal>: Return
        error_mark_node instead of aborting on overflow for named numbers.
        <N_Number_Declaration>: Reuse the <N_Object_Declaration> case and
        deal with error_mark_node specifically.
        * gcc-interface/utils.c (create_var_decl): Do not set DECL_IGNORED_P
        on CONST_DECLs.
        (gnat_write_global_declarations): Output global constants.

2019-10-10  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch7.adb (Check_Unnesting_In_Decls_Or_Stmts): When
        encountering a loop at the top level of a package declaration
        list (that is, within the declarations of a package spec or
        body) that has nested subprograms, call Unnest_Loop to create a
        new library-level procedure that will contain the loop, to allow
        for proper handling of up-level references from within nested
        subprograms, such as to loop parameters.
        (Unnest_Loop): New procedure that takes a loop statement and
        creates a new procedure body to enclose the loop statement,
        along with generating a call to the procedure.

2019-10-10  Arnaud Charlet  <charlet@adacore.com>

        * freeze.adb (Freeze_Subprogram): Ensure constructor is a C++
        constructor.

2019-10-10  Gary Dismukes  <dismukes@adacore.com>

        * libgnat/a-ststio.ads (File_Type): Apply pragma
        Preelaborable_Initialization to the type.

2019-10-10  Yannick Moy  <moy@adacore.com>

        * inline.adb (Can_Be_Inlined_In_GNATprove_Mode): Do not peek
        under private types whose completion is SPARK_Mode Off.

2019-10-10  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch4.adb, sem_cat.adb, sem_ch12.adb, sem_ch3.adb,
        sem_ch6.adb, sem_prag.adb, sem_util.adb, sem_util.ads: Minor
        typo fixes.

2019-10-10  Ed Schonberg  <schonberg@adacore.com>

        * sem_warn.adb (Warn_On_Useless_Assignment): Do not warn if the
        second assignment is at the same source position as the first.

2019-10-10  Gary Dismukes  <dismukes@adacore.com>

        * sem_util.adb (Enclosing_Subprogram): Handle the case of
        E_Entry_Family, returning the entry family's associated
        Protected_Body_Subprogram (as was already done for E_Entry).
        * exp_ch9.adb (Expand_N_Accept_Statement): Call Reset_Scopes_To
        on the block created for an accept statement to reset the scopes
        of any local entities to the block scope.

2019-10-10  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch12.adb (Analyze_Formal_Package_Declaration): Propagate
        an aspect specification for Abstract_State from generic package
        to formal package, so that it is available when analyzing the
        constructed formal.

2019-10-10  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch6.adb (Set_Actual_Subtypes): Put the freeze node of the
        actual subtype after its declaration when the type of the formal
        has a predicate.

2019-10-10  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch13.adb (Adjust_Record_For_Reverse_Bit_Order): Do not use
        the Esize of the component to compute its layout, but only the
        Component_Clause.  Do not issue a warning for the _Tag
        component.  Also set the Esize of the component at the end of
        the layout.
        (Analyze_Record_Representation_Clause): Remove Hbit local
        variable.  Lay out the Original_Record_Component only if it's
        distinct from the component.
        (Check_Record_Representation_Clause): Fix off-by-one bug for the
        Last_Bit of the artificial clause built for the _Tag component.

2019-10-10  Bob Duff  <duff@adacore.com>

        * treepr.ads, treepr.adb (ppar): New procedure.

2019-10-10  Bob Duff  <duff@adacore.com>

        * sem_aggr.adb (Resolve_Aggregate): Add missing cases in the
        Others_Allowed => True case -- N_Case_Expression_Alternative and
        N_If_Expression.  Use Nkind_In.
        * atree.adb, atree.ads, sinfo.adb, sinfo.ads (Nkind_In): New
        16-parameter version.

2019-10-10  Ed Schonberg  <schonberg@adacore.com>

        * sem_aggr.adb (Resolve_Array_Aggregate): Set properly the
        Predicated_Parent link of an itype created for an aggregate, so
        that the predicate_function of the parent can support proofs on
        the object that it initializes.

2019-10-10  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch3.adb (Analyze_Number_Declaration): Set
        Debug_Info_Needed in the case where the expression is an integer
        literal.

2019-10-10  Yannick Moy  <moy@adacore.com>

        * inline.adb (Can_Be_Inlined_In_GNATprove_Mode): Add subprograms
        with deep parameter or result type as not candidates for
        inlining.

2019-10-10  Vadim Godunko  <godunko@adacore.com>

        * libgnat/g-exptty.ads (TTY_Process_Descriptor): Set default
        value for Process.

2019-10-10  Bob Duff  <duff@adacore.com>

        * sem_prag.adb (Defer_Compile_Time_Warning_Error_To_BE): In
        addition to saving the pragma for further processing, copy the
        pragma into the main unit if necessary.

2019-10-10  Bob Duff  <duff@adacore.com>

        * einfo.ads, einfo.adb (Invariants_Ignored): New flag on types.
        This leaves just one unused flag.
        * sem_prag.adb (Invariant): Set the flag if appropriate.
        * exp_util.adb (Make_Invariant_Call): Check the flag.

2019-10-10  Arnaud Charlet  <charlet@adacore.com>

        * gnat1drv.adb (Gnat1drv): Skip code generation when handling an
        incomplete unit with -gnatceg.

2019-10-10  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch7.adb (Check_Unnesting_Elaboration_Code): Various
        cleanups.
        (Set_Elab_Proc): New procedure to create the defining identifier
        for a procedure created to encapsulate top-level blocks
        occurring as a part of library package elaboration.
        (First_Local_Scope): Function replaced by
        Reset_Scopes_To_Elab_Proc.
        (Reset_Scopes_To_Elab_Proc): New recursive procedure based on
        First_Local_Scope, which it replaces, that is called to traverse
        the statements of a library package body to locate top-level
        blocks and determine whether they contain nested subprograms
        that might address library-level objects of the package. Such
        blocks (and loops) and certain top-level subprograms within the
        statements will have their Scope reset here to match an
        encapsulating procedure created by
        Check_Unnesting_Elaboration_Code that will contain the
        statements.
        (Check_Unnesting_In_Decls_Or_Stmts): Code for handling blocks
        factored out into Unnest_Block. Add handling for package
        declarations and bodies, making recursive calls for
        visible/private declarations, body declarations, statements, and
        exception handlers. Also remove test for Is_Compilation_Unit:
        caller tests for Is_Library_Level_Entity instead.  Also, this
        proc's name was changed from Check_Unnesting_In_Declarations.
        (Check_Unnesting_In_Handlers): New procedure to traverse a
        sequence of exception handlers, calling
        Check_Unnesting_In_Decls_Or_Stmts on the statements of each
        handler.
        (Expand_N_Package_Body): Call Check_Unnesting_* routines only
        when Unnest_Subprogram_Mode is set and the current scope is a
        library-level entity (which includes packages and instantiations
        nested directly within a library unit).
        (Expand_N_Package_Declaration): Call Check_Unnesting_* routines
        only when Unnest_Subprogram_Mode is set and the current scope is
        a library-level entity (which includes packages and
        instantiations nested directly within a library unit).
        (Unnest_Block): New procedure factored out of
        Check_Unnesting_In_Decls_Or_Stmts, for creating a new procedure
        to replace a block statement and resetting the Scope fields of
        the block's top-level entities.

2019-10-10  Anthony Leonardo Gracio  <leonardo@adacore.com>

        * doc/gnat_ugn/about_this_guide.rst,
        doc/gnat_ugn/building_executable_programs_with_gnat.rst,
        doc/gnat_ugn/getting_started_with_gnat.rst,
        doc/gnat_ugn/gnat_and_program_execution.rst, errout.ads,
        exp_ch3.adb, gnatls.adb, impunit.adb, lib-writ.ads, opt.ads,
        sem_ch7.adb, sem_prag.adb, sem_res.adb, sem_warn.adb,
        terminals.c: Replace GPS by GNAT Studio.
        * gnat_ugn.texi: Regenerate.

2019-10-10  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch6.adb (Expand_Simple_Function_Return_Statement): If the
        function to which the return statement applies is an
        Ignored_Ghost_Function, do not indicate that it uses the
        secondary stack when the return type is unconstrained.

2019-10-10  Bob Duff  <duff@adacore.com>

        * libgnat/a-cbdlli.adb, libgnat/a-cbhama.adb,
        libgnat/a-cbhase.adb, libgnat/a-cbmutr.adb,
        libgnat/a-cborma.adb, libgnat/a-cborse.adb,
        libgnat/a-cdlili.adb, libgnat/a-cidlli.adb,
        libgnat/a-cihama.adb, libgnat/a-cihase.adb,
        libgnat/a-cimutr.adb, libgnat/a-ciorma.adb,
        libgnat/a-ciorse.adb, libgnat/a-cobove.adb,
        libgnat/a-cohama.adb, libgnat/a-cohase.adb,
        libgnat/a-coinve.adb, libgnat/a-comutr.adb,
        libgnat/a-conhel.adb, libgnat/a-convec.adb,
        libgnat/a-coorma.adb, libgnat/a-coorse.adb (Reference,
        Constant_Reference): Use Busy instead of Lock, so we forbid
        tampering with cursors, rather than tampering with elements.

2019-10-10  Ed Schonberg  <schonberg@adacore.com>

        * sem_cat.adb (Set_Categorization_From_Pragma): Do not modify
        any visibility settings if there are no compilation_unit pragmas
        following the package declaration. Add comments for future
        cleanup.

2019-10-10  Patrick Bernardi  <bernardi@adacore.com>

        * bindgen.adb (System_Secondary_Stack_Package_In_Closure):
        Renamed flag System_Secondary_Stack_Used to be clearer of what
        it represents.
        (Gen_Adainit): Refactor secondary stack related code to make it
        clearer.
        * rtsfind.adb (Load_RTU): Don't set Sec_Stack_Used flag here
        (RTE): Set Sec_Stack_Used if the System.Secondary_Stack is
        referenced, but not if we're ignoring ghost code.

2019-10-10  Piotr Trojanek  <trojanek@adacore.com>

        * sem_prag.adb (Analyze_Global_In_Decl_Part): Simplify previous
        test, just like in a recent commit we simplified a similar test
        for Depends contract.

2019-10-04  Joseph Myers  <joseph@codesourcery.com>

        * gcc-interface/utils.c (flag_isoc2x): New variable.

2019-10-01  Maciej W. Rozycki  <macro@wdc.com>

        * gcc-interface/Makefile.in (ADA_RTL_DSO_DIR): New variable.
        (install-gnatlib): Use it in place of ADA_RTL_OBJ_DIR for shared 
        library installation.

2019-10-01  Maciej W. Rozycki  <macro@wdc.com>

        * gcc-interface/Make-lang.in (ada.install-common): Split into...
        (gnat-install-tools, gnat-install-lib): ... these.

2019-09-26  Alexandre Oliva <oliva@adacore.com>

        * gcc-interface/decl.c (components_to_record): Set
        DECL_SIZE_UNIT for zero-sized fields.

2019-09-26  Arnaud Charlet  <charlet@adacore.com>

        * osint.adb (OS_Time_To_GNAT_Time): Remove dependency on To_C/To_Ada

2019-09-23  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * libgnarl/s-osinte__solaris.ads (sysconf): Declare.
        (SC_NPROCESSORS_ONLN): Define.
        * libgnarl/s-tasinf__solaris.ads (Number_Of_Processors): Declare.
        * libgnarl/s-tasinf__solaris.adb (N_CPU): New variable.
        (Number_Of_Processors): New function.

2019-09-23  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (Regular_Loop_to_gnu): Do not rotate the loop
        if -Og is enabled.
        (build_return_expr): Do not perform NRV if -Og is enabled.
        (Subprogram_Body_to_gnu): Likewise.
        (gnat_to_gnu) <N_Simple_Return_Statement>: Likewise.
        (Handled_Sequence_Of_Statements_to_gnu): Do not inline finalizers if
        -Og is enabled.
        * gcc-interface/utils.c (convert_to_index_type): Return early if -Og
        is enabled.

2019-09-23  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (gnat_compile_time_expr_list): New variable.
        (Pragma_to_gnu): Rename local variable.  Save the (first) expression
        of pragma Compile_Time_{Error|Warning} for later processing.
        (Compilation_Unit_to_gnu): Process the expressions saved above.

2019-09-23  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (Attribute_to_gnu): Test Can_Use_Internal_Rep
        on the underlying type of the node.
        (Call_to_gnu): Likewise with the type of the prefix.

2019-09-23  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (components_to_record): Do not reorder fields
        in packed record types if they contain fixed-size fields that cannot
        be laid out in a packed manner.

2019-09-19  Tom Tromey  <tromey@adacore.com>

        * gcc-interface/misc.c (gnat_get_type_bias): Return the bias
        when -fgnat-encodings=gdb.

2019-09-19  Steve Baird  <baird@adacore.com>

        * sem_prag.adb (Preferred_String_Type): A new function. Given an
        expression, determines whether the preference rules defined for
        the third-and-later arguments of pragma Annotate suffice to
        determine the type of the expression. If so, then the preferred
        type is returned; if not then Empty is returned. Handles
        concatenations.
        (Analyze_Pragma): Replace previous code, which dealt only with
        string literals, with calls to the new Preferred_String_Type
        function, which also handles concatenations.
        * doc/gnat_rm/implementation_defined_pragmas.rst: Update
        documentation for pragma Annotate.
        * gnat_rm.texi: Regenerate.

2019-09-19  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_util.adb (Is_Possibly_Unaligned_Slice): Do not return true
        on pure alignment considerations if the target does not require
        the strict alignment of memory accesses.

2019-09-19  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Check_Private_View): Add a comment to indicate
        future work.

2019-09-19  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_aggr.adb (Has_Mutable_Components): Look at the underlying
        type of components to find out whether they are mutable.

2019-09-19  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Instantiate_Package_Body): Check that the body
        has not already been instantiated when the body of the parent
        was being loaded.

2019-09-19  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_util.adb (In_Instance): Test whether the current unit has
        been analyzed instead of being on the scope stack to detect the
        case of actuals of an instantiation of a generic child unit done
        as a compilation unit.

2019-09-19  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/g-socket.ads, libgnat/g-socket.adb
        (Create_Socket_Pair): New routine.
        * libgnat/g-socthi.ads (OS_Has_Socketpair): Boolean constant.
        (C_Socketpair): New imported routine.
        * libgnat/g-socthi__mingw.ads, libgnat/g-socthi__vxworks.ads
        (Default_Socket_Pair_Family): New constant.
        (C_Socketpair): New routine.
        * libgnat/g-socthi__mingw.adb, libgnat/g-socthi__vxworks.adb
        (C_Socketpair): Is separated in anouther file.
        * libgnat/g-sthcso.adb (C_Socketpair): Non UNIX implementation.
        * libgnat/g-stsifd__sockets.adb: Reuse C_Socketpair.

2019-09-19  Yannick Moy  <moy@adacore.com>

        * sem_prag.adb (Analyze_Depends_In_Decl_Part): Simplify previous
        test.

2019-09-19  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch7.adb (Install_Parent_Private_Declarations): If a
        generic child unit is instantiated within a sibling child unit,
        the analysis of its private part requires that the private part
        of the ancestor be available, as is done when the context
        includes an instance of the ancestor.

2019-09-19  Yannick Moy  <moy@adacore.com>

        * inline.adb (Can_Be_Inlined_In_GNATprove_Mode): Add special
        case for traversal functions.

2019-09-19  Yannick Moy  <moy@adacore.com>

        * sem_prag.adb (Analyze_Global_In_Decl_Part): Do not issue an
        error when a constant of an access type is used as output in a
        Global contract.
        (Analyze_Depends_In_Decl_Part): Do not issue an error when a
        constant of an access type is used as output in a Depends
        contract.

2019-09-19  Arnaud Charlet  <charlet@adacore.com>

        * exp_attr.adb: Remove obsolete comment.

2019-09-19  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch3.adb (Build_Derived_Access_Type): If this is an access-
        to-subprogram type, copy Can_Use_Internal_Rep from the parent.

2019-09-19  Yannick Moy  <moy@adacore.com>

        * gcc-interface/Make-lang.in: Remove references to sem_spark.
        * sem_spark.adb, sem_spark.ads: Remove unit.

2019-09-19  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Is_Inline_Floating_Point_Attribute): Treat
        Machine_Rounding as an alias for Rounding.
        * sem_res.adb (Simplify_Type_Conversion): Likewise.

2019-09-19  Gary Dismukes  <dismukes@adacore.com>

        * exp_unst.adb (Unnest_Subprogram): Bypass the transformation of
        up-level references unless Opt.Generate_C_Code is enabled.

2019-09-19  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Expand_Array_Equality): If optimization is
        enabled, generate a simple conjunction of comparisons for the
        specific case of constrained 1-dimensional 2-element arrays.
        Fix formatting.

2019-09-19  Piotr Trojanek  <trojanek@adacore.com>

        * exp_dbug.ads, exp_dbug.adb (Get_Homonym_Number): Remove.
        (Append_Homonym_Number): Use Homonym_Number instead of
        Get_Homonym_Number.
        * exp_util.ads, exp_util.adb (Homonym_Number): Mirror style of
        the removed Get_Homonym_Number routine, i.e. initialize local
        objects at declaration and refine the type of result.
        * sem_util.adb (Add_Homonym_Suffix): Use Homonym_Number instead
        of Get_Homonym_Number.

2019-09-19  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Check_Aspect_At_End_Of_Declarations): Simplify
        handling of expressions in predicates when the context is a
        generic unit.

2019-09-19  Bob Duff  <duff@adacore.com>

        * sem_attr.adb (Resolve_Attribute): Make sure the secondary
        stack is properly managed in the case of a 'Range attribute in a
        loop.

2019-09-19  Raphael Amiard  <amiard@adacore.com>

        * libgnat/a-cfhase.ads (Set): Add comments to public primitives.

2019-09-19  Raphael Amiard  <amiard@adacore.com>

        * libgnat/a-cbhama.ads, libgnat/a-cbhase.ads,
        libgnat/a-chtgop.ads (Clear): Refine comments

2019-09-19  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Restore_Private_Views): Comment out new code
        that clear the Is_Generic_Actual_Type also on the full view.

2019-09-19  Bob Duff  <duff@adacore.com>

        * exp_ch3.adb (Rewrite_As_Renaming): Return False if there are
        any aspect specifications, because otherwise Insert_Actions
        blows up.

2019-09-19  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch6.adb (Add_Simple_Call_By_Copy_Code): Add
        Bit_Packed_Array parameter and documet it. Always insert a copy
        if it is set True.
        (Expand_Actuals): Adjust the calls to
        Add_Simple_Call_By_Copy_Code.

2019-09-19  Bob Duff  <duff@adacore.com>

        * xref_lib.adb (Get_Symbol_Name): If we reach EOF in the first
        loop without finding the symbol, return "???". Otherwise, it's
        an infinite loop.
        (Parse_EOL): Assert that we're not already at EOF.  Remove
        processing of LF/CR -- there are no operating systems that use
        that.

2019-09-19  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch6.adb (Is_Legal_Copy): Also return false for an aliased
        formal and a formal passed by reference in convention Ada.  Add
        missing guard to the existing test on Is_Valued_Procedure.

2019-09-19  Bob Duff  <duff@adacore.com>

        * rtsfind.ads (RTE_Available): Improve comment.

2019-09-18  Bob Duff  <duff@adacore.com>

        * exp_ch5.adb (Expand_Assign_Array_Loop_Or_Bitfield): Move call
        to RTE_Available later, so it doesn't disturb the elab order.
        The RE_Copy_Bitfield entity is defined in package
        System.Bitfields which has a dependency on package
        System.Bitfield_Utils, which has it its spec:
           pragma Elaborate_Body;
        The query on RTE_Available forces loading and analyzing
        System.Bitfields and all its withed units.

2019-09-18  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.ads (Alignment_Warnings_Record): Add P component.
        * checks.adb (Apply_Address_Clause_Check): Be prepared to kill
        the warning also if the clause is of the form X'Address.
        (Validate_Alignment_Check_Warning): Kill the warning if the
        clause is of the form X'Address and the alignment of X is
        compatible.

2019-09-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_res.adb (Set_Mixed_Node_Expression): If a conditional
        expression has universal_real alternaitves and the context is
        Universal_Fixed, as when it is an operand in a fixed-point
        multiplication or division, resolve the expression with a
        visible fixed-point type, which must be unique.

2019-09-18  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch3.adb (Constrain_Component_Type): For a discriminated
        type, handle the case of a constraint given by a conversion of a
        discriminant of the enclosing type. Necessary when compiling a
        discriminated task for a restricted run-time, when the generated
        Secondary_Stack component may be set by means of an aspect on
        the task type.

2019-09-18  Ed Schonberg  <schonberg@adacore.com>

        * exp_aggr.adb (Expand_Record_Aggregate, Rewrite_Discriminant):
        After rewriting a reference to an outer discriminant as a
        selected component of the enclosing object, analyze the selected
        component to ensure that the entity of the selector name is
        properly set. This is necessary when the aggregate appears
        within an expression that may have been analyzed already.

2019-09-18  Justin Squirek  <squirek@adacore.com>

        * sem_ch8.adb (Use_One_Type): Add guard to prevent warning on a
        reundant use package clause where there is no previous
        use_clause in the chain.

2019-09-18  Justin Squirek  <squirek@adacore.com>

        * exp_ch4.adb (Expand_N_Type_Conversion): Add calculation of an
        alternative operand for the purposes of generating accessibility
        checks.

2019-09-18  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_aggr.adb (Build_Array_Aggr_Code): In STEP 1 (c), duplicate
        the expression and reset the Loop_Actions for each loop
        generated for an others choice.

2019-09-18  Justin Squirek  <squirek@adacore.com>

        * einfo.adb, einfo.ads (Minimum_Accessibility): Added new field.
        (Set_Minimum_Accessibility): Added to set new field.
        (Minimum_Accessibility): Added to fetch new field.
        * exp_ch6.adb (Expand_Subprogram_Call): Modify calls to fetch
        accessibility levels to the new subprogram Get_Accessibility
        which handles cases where minimum accessibility might be needed.
        * sem_ch6.adb (Analyze_Subprogram_Body_Helper): Add section to
        generate a Minimum_Accessibility object within relevant
        subprograms.
        * sem_util.adb, sem_util.ads (Dynamic_Accessibility_Level):
        Additional documentation added and modify section to use new
        function Get_Accessibility.
        (Get_Accessibility): Added to centralize processing of
        accessibility levels.

2019-09-18  Steve Baird  <baird@adacore.com>

        * sem_util.ads (Interval_Lists): A new visible package. This
        package is visible because it is also intended for eventual use
        in Sem_Eval.Subtypes_Statically_Compatible when that function is
        someday upgraded to handle static predicates correctly.  This
        new package doesn't really need to be visible for now, but it
        still seems like a good idea.
        * sem_util.adb (Gather_Components): Implement AI12-0086 via the
        following strategy. The existing code knows how to take a static
        discriminant value and identify the corresponding variant; in
        the newly-permitted case of a non-static value of a static
        subtype, we arbitrarily select a value of the subtype and find
        the corresponding variant using the existing code. Subsequently,
        we check that every other value of the discriminant's subtype
        corresponds to the same variant; this is done using the newly
        introduced Interval_Lists package.
        (Interval_Lists): Provide a body for the new package.

2019-09-18  Javier Miranda  <miranda@adacore.com>

        * exp_ch4.adb (Expand_N_Op_Eq): The frontend assumes that we can
        do a bit-for-bit comparison of two access to protected
        subprogram pointers. However, there are two reasons why we may
        not be able to do that: (1) there may be padding bits for
        alignment before the access to subprogram, and (2) the access to
        subprogram itself may not be compared bit-for- bit because the
        activation record part is undefined: two pointers are equal iff
        the subprogram addresses are equal. This patch fixes it by
        forcing a field-by-field comparison.
        * bindgen.adb (Gen_Adainit): The type No_Param_Proc is defined
        in the library as having Favor_Top_Level, but when we create an
        object of that type in the binder file we don't have that
        pragma, so the types are different. This patch fixes this issue.
        * libgnarl/s-interr.adb, libgnarl/s-interr__hwint.adb,
        libgnarl/s-interr__sigaction.adb, libgnarl/s-interr__vxworks.adb
        (Is_Registered): This routine erroneously assumes that the
        access to protected subprogram is two addresses. We need to
        create the same record that the compiler makes to ensure that
        any padding is the same. Then we have to look at just the first
        word of the access to subprogram. This patch fixes this issue.

2019-09-18  Bob Duff  <duff@adacore.com>

        * exp_ch5.adb (Expand_Assign_Array_Loop_Or_Bitfield): The call
        to Copy_Bitfield is now enabled.
        (Expand_Assign_Array_Bitfield): Multiply 'Length times
        'Component_Size "by hand" instead of using 'Size.

2019-09-18  Vasiliy Fofanov  <fofanov@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst: Fix minor
        formatting issue.

2019-09-18  Javier Miranda  <miranda@adacore.com>

        * exp_disp.adb (Make_DT, Make_Secondary_DT): Remove generation
        of alignment representation clause for the following tables:
        Predef_Prims, Iface_DT, TSD, ITable, DT.

2019-09-18  Steve Baird  <baird@adacore.com>

        * sem_eval.adb (Expr_Value): Do not fail "the type of a null
        literal must be an access type" assertion if errors have already
        been posted on the given node.

2019-09-18  Piotr Trojanek  <trojanek@adacore.com>

        * exp_dbug.ads, exp_dbug.adb (Get_Homonym_Number): Refine type
        from Nat to Pos.
        * sem_util.adb (Add_Homonym_Suffix): Refine type of a local
        variable.

2019-09-18  Yannick Moy  <moy@adacore.com>

        * exp_dbug.adb (Append_Homonym_Number): Use new function
        Get_Homonym_Number.
        (Get_Homonym_Number): New function to return the homonym number.
        (Qualify_Entity_Name): Remove special case for GNATprove.
        * exp_dbug.ads (Get_Homonym_Number): Make the new function
        public for use in GNATprove.
        * frontend.adb (Frontend): Do not qualify names in GNATprove
        mode.
        * sem_util.adb (Unique_Name): Append homonym suffix where needed
        for entities which have local homonyms in the same scope.

2019-09-18  Nicolas Roche  <roche@adacore.com>

        * libgnat/s-valrea.adb (Scan_Integral_Digits): New procedure.
        (Scan_Decimal_Digits): New procedure.
        (As_Digit): New function.
        (Scan_Real): Use Scan_Integral_Digits and Scan_Decimal_Digits.

2019-09-18  Claire Dross  <dross@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference): Call routine from
        Exp_Util to know the value of the Constrained attribute in the
        static case.
        * exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Make
        implicit dereferences inside the Constrained attribute explicit.
        * exp_util.ads, exp_util.adb
        (Attribute_Constrained_Static_Value): New routine to compute the
        value of a statically known reference to the Constrained
        attribute.

2019-09-18  Vadim Godunko  <godunko@adacore.com>

        * libgnat/g-expect.adb (Expect_Internal): Don't include invalid
        file descriptors into the set of file descriptors for Poll.
        Raise Process_Died exception when computed set of file
        descriptors to monitor is empty.

2019-09-18  Frederic Konrad  <konrad@adacore.com>

        * adaint.c: Include dosFsLib.h and vwModNum.h for VxWorks 6.
        (__gnat_rename): Map S_dosFsLib_FILE_NOT_FOUND to ENOENT.

2019-09-18  Steve Baird  <baird@adacore.com>

        * freeze.adb (Freeze_Object_Declaration): Do not call
        Check_Large_Modular_Array when the object declaration being
        frozen is an ignored ghost entity.

2019-09-18  Tom Tromey  <tromey@adacore.com>

        * make.adb (Initialize): Fix typo.

2019-09-18  Olivier Hainque  <hainque@adacore.com>

        * libgnat/s-win32.ads (DWORD_PTR): New type, pointer size
        unsigned int.
        (SYSTEM_INFO): Use it for dwActiveProcessorMask.

2019-09-18  Arnaud Charlet  <charlet@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst: Improve doc on
        Warning_As_Error.
        * gnat_rm.texi: Regenerate.

2019-09-18  Arnaud Charlet  <charlet@adacore.com>

        * doc/gnat_rm/implementation_defined_characteristics.rst,
        doc/gnat_rm/implementation_defined_pragmas.rst,
        doc/gnat_rm/implementation_of_specific_ada_features.rst: Remove
        remaining references to VMS support
        * gnat_rm.texi: Regenerate.

2019-09-18  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-stausa.adb: Fix a typo

2019-09-18  Bob Duff  <duff@adacore.com>

        * libgnat/a-cbhama.adb, libgnat/a-cbhase.adb,
        libgnat/a-cbmutr.adb, libgnat/a-cborma.adb,
        libgnat/a-cborse.adb, libgnat/a-cobove.adb (Copy): Avoid reading
        the uninitialized variable C in the Checks = False case. Change
        variable to be a constant.

2019-09-18  Claire Dross  <dross@adacore.com>

        * libgnat/a-cofuma.adb (Remove, Elements_Equal_Except,
        Keys_Included, Keys_Included_Except): Rename loop indexes and
        global constants from I to J.

2019-09-18  Arnaud Charlet  <charlet@adacore.com>

        * exp_unst.adb (Unnest_Subprograms): Refine previous change.

2019-09-17  Claire Dross  <dross@adacore.com>

        * libgnat/a-cofuma.ads, libgnat/a-cofuma.adb (Remove): New
        function which returns a copy of the input container without a
        given mapping.

2019-09-17  Yannick Moy  <moy@adacore.com>

        * libgnat/s-arit64.adb (Double_Divide): Correctly handle the
        special case when rounding.

2019-09-17  Javier Miranda  <miranda@adacore.com>

        * sem_ch3.adb (Complete_Private_Subtype): Propagate attributes
        Has_Attributes and Predicate_Function to the cloned subtype.

2019-09-17  Eric Botcazou  <ebotcazou@adacore.com>

        * sem.adb (Do_Analyze): Save Style_Check_Max_Line_Length on
        entry and restore it on exit instead of recomputing it.

2019-09-17  Tom Tromey  <tromey@adacore.com>

        * exp_dbug.ads: Update character type comment.

2019-09-17  Yannick Moy  <moy@adacore.com>

        * libgnat/s-arit64.adb (Double_Divide): Simplify needlessly
        complex computation. Fix comments.
        (Scaled_Divide): Fix comments. Explain why implementation does
        not suffer from bugs in Algorithm D from 2nd Edition of TAOCP.

2019-09-17  Yannick Moy  <moy@adacore.com>

        * libgnat/s-arit64.adb (Scaled_Divide): Add protection against
        undesirable wrap-around.

2019-09-17  Yannick Moy  <moy@adacore.com>

        * libgnat/s-arit64.adb (Double_Divide): Fix two possible
        overflows.

2019-09-17  Dmitriy Anisimkov  <anisimko@adacore.com>

        * make_util.ads (On_Windows): Move...
        * osint.ads (On_Windows): There.
        * osint.adb (OS_Time_To_GNAT_Time): If odd incremented on
        Windows before conversion to Time_Stamp_Type.

2019-09-17  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb (Check_Declaration): Do not check the assignment
        from an illegal declaration.

2019-09-17  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_and_program_execution.rst: Clarify
        documentation.
        * gnat_ugn.texi: Regenerate.
        * libgnat/s-stausa.ads: Clarify comments.

2019-09-17  Steve Baird  <baird@adacore.com>

        * sem_util.adb (Wrong_Type): In deciding to suppress a message,
        it is not enough for In_Instance to be True; in addition,
        In_Generic_Actual (Expr) must be False.
        * sem_type.adb (In_Generic_Actual): Fix bug where traversal of
        parents skips every other node.

2019-09-17  Claire Dross  <dross@adacore.com>

        * sem_spark.adb (Get_Observed_Or_Borrowed_Expr): If the
        definition of a local borrower contains calls to traversal
        functions, the borrowed expression is the first parameter of the
        first traversal function call in the definition.

2019-09-17  Ed Falis  <falis@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst: Remove
        section.
        * gnat_rm.texi, gnat_ugn.texi: Regenerate.

2019-09-17  Vadim Godunko  <godunko@adacore.com>

        * libgnat/g-exptty.ads (Close_Input): New subprogram.
        * libgnat/g-exptty.adb (Close_Input): New subprogram.
        (Close): Move close of TTY to Close_Input.
        * terminals.c (__gnat_close_tty): Set file descriptors to
        invalid value after close.

2019-09-17  Vadim Godunko  <godunko@adacore.com>

        * libgnat/g-expect.adb (Expect_Internal): Try to call 'poll' few
        times.

2019-09-17  Vadim Godunko  <godunko@adacore.com>

        * libgnat/g-expect.ads, libgnat/g-expect.adb (Close_Input): New
        subprogram.
        (Get_Command_Output): Call Close_Input to close input stream.
        (Expect_Internal): Likewise.
        (Close): Likewise.
        * libgnat/g-exptty.adb (Close): Likewise.

2019-09-17  Piotr Trojanek  <trojanek@adacore.com>

        * sem_util.ads, sem_util.adb (Is_Attribute_Old): New utility
        routine.

2019-09-17  Yannick Moy  <moy@adacore.com>

        * inline.adb (Can_Be_Inlined_In_GNATprove_Mode): Add handling
        for dispatching operations.

2019-09-17  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Check_Aspect_At_End_Of_Declarations): In a
        generic context, for a Predicate aspect, use
        Preanalyze_Spec_Expression to verify conformance.

2019-09-17  Javier Miranda  <miranda@adacore.com>

        * sem_ch3.adb (Constrain_Corresponding_Record): Propagate
        attribute Is_Tagged_Type.

2019-09-17  Javier Miranda  <miranda@adacore.com>

        * exp_ch3.adb (Build_Record_Init_Proc): Do not generate code to
        adjust the tag component when the record is initialized with a
        raise expression.
        * sem_aggr.adb (Valid_Limited_Ancestor): Return True for
        N_Raise_Expression nodes.
        (Valid_Ancestor_Type): Return True for raise expressions.
        * sem_ch3.adb (Analyze_Component_Declaration): Do not report an
        error when a component is initialized with a raise expression.
        * sem_ch4.adb (Analyze_Qualified_Expression): Do not report an
        error when the aggregate has a raise expression.

2019-09-17  Piotr Trojanek  <trojanek@adacore.com>

        * ali.ads: Fix casing in comment.
        * ali-util.ads, ali-util.adb (Read_Withed_ALIs): Remove
        Ignore_Errors parameter; it was only set to non-default value of
        True when running in GNATprove_Mode and wrongly reset to False
        when calling this routine recursively. Now in GNATprove mode we
        want it to be always True, so in fact it is equivalent to
        GNATProve_Mode flag itself (which was already used in this
        routine).

2019-09-17  Arnaud Charlet  <charlet@adacore.com>

        * adaint.c (_REENTRANT, _THREAD_SAFE): Only define if needed.

2019-09-17  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-bitfie.ads (Val_Bits, Val_Bytes): Define from
        Long_Long_Integer'Size.

2019-09-17  Javier Miranda  <miranda@adacore.com>

        * exp_ch6.ads (Needs_BIP_Task_Actuals): New subprogram.
        * exp_ch6.adb (Add_Task_Actuals_To_Build_In_Place_Call): Code
        cleanup.
        (Check_Number_Of_Actuals): New subprogram.
        (Make_Build_In_Place_Call_In_Allocator): Adding assertion.
        (Make_Build_In_Place_Call_In_Anonymous_Context): Adding
        assertion.
        (Make_Build_In_Place_Call_In_Assignment): Adding assertion.
        (Make_Build_In_Place_Call_In_Object_Declaration): Code cleanup
        plus assertion addition.
        (Needs_BIP_Task_Actuals): New subprogram.
        * sem_ch6.adb (Create_Extra_Formals): Rely on
        Needs_BIP_Task_Actuals() to check if the master of the tasks to
        be created, and the caller's activation chain formals are
        needed.

2019-09-17  Bob Duff  <duff@adacore.com>

        * libgnat/s-bituti.adb (Get_Val_2, Set_Val_2): Use new routines
        for getting and setting a Val_2, avoiding touching the second
        half when that half might not exist.
        * exp_ch5.adb (Expand_Assign_Array_Loop_Or_Bitfield): Correct
        tests for potential volatile or independent components. In
        particular, do not call Prefix unless we know it's a slice.

2019-09-17  Dmitriy Anisimkov  <anisimko@adacore.com>

        * gsocket.h: Include sys/un.h.
        * s-oscons-tmplt.c (AF_UNIX): New constant generation.
        (SIZEOF_sockaddr_un): Idem.
        * libgnat/g-socket.ads (Family_Type): New value Family_Unix
        added.
        (Family_Inet_4_6): New subtype only for network families.
        (Sock_Addr_Type): Add Unbounded_String field for Family_Unix
        variant.
        (Unix_Socket_Address): Create Sock_Addr_Type from socket
        pathname.
        (Network_Socket_Address): Create Sock_Addr_Type from
        Inet_Addr_Type and Port_Type parameters.
        * libgnat/g-socket.adb: Support local unix address in socket
        routines.
        (Get_Address_Info): Disable warning about Result may be
        referenced before it has a value. Remove duplicated code to exit
        from Look_For_Supported.
        * libgnat/g-sothco.ads (Unix_Name_Length): New constant defining
        maximum number of characters in local socket address path.
        (Sockaddr): Add variant for Family_Unix address family. Move
        Sin_Port and Sin_Family to Family_Inet section. Add Sin6_Port
        and Sin6_Family to Family_Inet6 section.
        (Set_Address): Add out parameter Length to return valuable
        Sockaddr data length.
        (Get_Address): Add input parameter Length to set valuable
        Sockaddr data length.
        * libgnat/g-sothco.adb: Support local unix address in socket
        routines.

2019-09-17  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Expand_Size_Attribute): Chain the special cases
        on the back-end path and rewrite the attribute appled to slices
        of bit-packed arrays into the product of the Length and the
        Compoent_Size attributes of the slices.
        * exp_ch5.adb (Expand_Assign_Array_Bitfield): Use Size attribute
        directly to compute the bitfield's size.

2019-09-17  Bob Duff  <duff@adacore.com>

        * exp_ch5.adb (Expand_Assign_Array_Loop_Or_Bitfield): Add tests
        for potential volatile or independent components.
        * libgnat/s-bituti.adb (Copy_Small_Bitfield,
        Copy_Large_Bitfield): Move declarations to more appropriate
        place.

2019-09-13  Maciej W. Rozycki  <macro@wdc.com>

        * make.adb (Scan_Make_Arg): Also accept `--sysroot=' for the 
        compiler and the linker.
 
2019-08-30  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (maybe_saturate_size): New function.
        (gnat_to_gnu_entity): Invoke it on the Esize of types before sending
        it for back-annotations.
        * gcc-interface/trans.c: Fix typo.

2019-08-30  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/ada-tree.h (DECL_FORCED_BY_REF_P): New macro.
        * gcc-interface/decl.c (gnat_to_gnu_param): Set it on parameters
        whose mechanism was forced to by-reference.
        * gcc-interface/trans.c (Call_to_gnu): Do not issue a warning about a
        misaligned actual parameter if it is based on a CONSTRUCTOR.  Remove
        obsolete warning for users of Starlet.  Issue a warning if a temporary
        is make around the call for a parameter with DECL_FORCED_BY_REF_P set.
        (addressable_p): Return true for REAL_CST and ADDR_EXPR.

2019-08-30  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (gnat_to_gnu): Do not set the location on an
        expression used for a tag.

2019-08-30  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/gigi.h (aggregate_type_contains_array_p): Declare.
        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Type>: For an
        extension, test Has_Record_Rep_Clause instead of Has_Specified_Layout.
        (adjust_packed): Return 0 if the type of the field is an aggregate
        type that contains (or is) a self-referential array.
        (type_has_variable_size): Delete.
        * gcc-interface/utils.c (inish_record_type): Constify a variable.
        (aggregate_type_contains_array_p): Add parameter SELF_REFERENTIAL.
        <RECORD_TYPE>: Pass it in the recursive call.
        <ARRAY_TYPE>: If it is true, return true only if the array type is
        self-referential.
        (create_field_decl): Streamline the setting of the alignment on the
        field.  Pass false to aggregate_type_contains_array_p.

2019-08-30  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (lvalue_required_p) <N_Slice>: Adjust GNU_TYPE
        in the recursive call.
        <N_Selected_Component>: Likewise.

2019-08-30  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils.c (build_template): Deal with parameters
        passed by pointer to component of multi-dimensional arrays.

2019-08-30  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (annotate_value) <CALL_EXPR>: Inline the call
        also if List_Representation_Info is greater than 3.

2019-08-30  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (Attribute_to_gnu) <Attr_Size>: Add assertion.

2019-08-30  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/gigi.h (gigi_checking_assert): New macro.
        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Modular_Integer_Type>:
        Remove redundant test and adjust comments.  Minor tweaks.
        * gcc-interface/trans.c (Call_to_gnu): Do not generate range checks,
        instead assert that the Do_Range_Check flag is not set.  Adjust call
        to convert_with_check.
        (gnat_to_gnu): Likewise.
        (assoc_to_constructor): Likewise.
        (pos_to_constructor): Likewise.  Remove GNAT_COMPONENT_TYPE parameter.
        (emit_range_check): Delete.
        (convert_with_check): Remove RANGE_P parameter and adjust.  Do a single
        overflow check for modular types.

2019-08-23  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/91283
        * gcc-interface/misc.c (gnat_post_options): Set flag_excess_precision
        instead of flag_excess_precision_cmdline.

2019-08-21  Vadim Godunko  <godunko@adacore.com>

        * libgnat/g-expect.adb (Expect_Internal): Attempt to read
        several times when 'read' returns non-positive.

2019-08-21  Piotr Trojanek  <trojanek@adacore.com>

        * einfo.adb (Is_Discriminal): Remove extra parens.
        (Is_Constant_Object): Simplify by reusing Ekind_In.
        (Is_Prival): Remove extra parens.
        * checks.adb, exp_ch4.adb, sem_ch3.adb, sem_spark.adb: Minor
        reformattings.

2019-08-21  Claire Dross  <dross@adacore.com>

        * libgnat/a-cofove.ads (Vector): Add an Iterable aspect to allow
        iteration.
        (Iter_First, Iter_Next): Primitives used for iteration.

2019-08-21  Yannick Moy  <moy@adacore.com>

        * sem_ch3.adb (Analyze_Subtype_Declaration): Inherit RM_Size
        field for formal type parameters in generic instantiations.

2019-08-21  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb: Update references to the SPARK RM.

2019-08-21  Eric Botcazou  <ebotcazou@adacore.com>

        * repinfo.adb (List_Array_Info): In -gnatR4 mode, set the
        relevant flag on the component type here instead of...
        (List_Object_Info): Likewise for the object type.
        (List_Entities): ...here.  In -gnatR4 mode, recurse into
        entities local to a record type.
        (List_Component_Layout): In -gnatR4 mode, mark the type as
        relevant.

2019-08-21  Bob Duff  <duff@adacore.com>

        * Makefile.rtl (GNATRTL_NONTASKING_OBJS): Add s-bitutil.o and
        s-biutin.o.
        * exp_ch5.adb (Expand_Assign_Array_Bitfield): New function to
        generate a call to Copy_Bitfield. This is disabled for now.
        (Expand_Assign_Array_Loop_Or_Bitfield): New function to decide
        whether to call Expand_Assign_Array_Bitfield.
        (Expand_Assign_Array): Call Expand_Assign_Array_Loop_Or_Bitfield
        instead of Expand_Assign_Array_Loop.
        * libgnat/s-bitfie.ads, libgnat/s-bituti.adb,
        libgnat/s-bituti.ads: New units.
        * rtsfind.ads: Add enum literals for accessing Copy_Bitfield.

2019-08-21  Piotr Trojanek  <trojanek@adacore.com>

        * bindo-graphs.ads (Iterate_Edges_To_Successors): Fix typo in
        pragma Inline.
        * bindo-graphs.adb (Delete_Edge): Fix layout in parameter list.

2019-08-21  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch3.adb (Build_Master): Suppress call to
        Build_Class_Wide_Master in the case where the
        access-to-limited-class-wide type was created for a component in
        an entry's formal parameter
        block (Is_Parameter_Block_Component_Type), to prevent a master
        from being created for such access types generated by the front
        end in a task spec for entry formals in a parameter block.  Add
        a ??? about whether this suppression should be done more
        generally (such as by using Comes_From_Source).

2019-08-21  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch6.adb (Expand_N_Extended_Return_Statement): In the case
        of a built-in-place function that doesn't need a BIP_Alloc_Form
        parameter but returns unconstrained, build the return
        consistently using the function's result subtype.  Remove bypass
        added in previous change.

2019-08-21  Piotr Trojanek  <trojanek@adacore.com>

        * sem_prag.adb (Max_Entry_Queue_Length): Do not substitute
        expression of the pragma argument with its value during
        analysis.
        * sem_util.adb (Get_Max_Queue_Length): Compute value of the
        pragma argument when needed.

2019-08-21  Yannick Moy  <moy@adacore.com>

        * checks.adb (Install_Null_Excluding_Check): Do not install
        check in GNATprove mode.

2019-08-21  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb (Process_Path): Do nothing on address of
        subprogram.

2019-08-21  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_util.adb (Finalize_Address): Deal consistently with
        subtypes of private protected types.

2019-08-21  Piotr Trojanek  <trojanek@adacore.com>

        * exp_util.adb (Corresponding_Runtime_Package): Use high-level
        Is_Protected_Type.
        * sem_ch8.adb (Analyze_Renamed_Entry): Likewise.
        * sem_ch9.adb (Analyze_Requeue): Likewise.

2019-08-21  Javier Miranda  <miranda@adacore.com>

        * sem_util.adb (Update_Named_Associations): Update
        First_Named_Actual when the subprogram call has a single named
        actual.

2019-08-21  Joel Brobecker  <brobecker@adacore.com>

        * doc/Makefile (mk_empty_dirs): New (PHONY) rule.
        (%.html, %.pdf, %.txt, %.info, %.texinfo): Add dependencies on
        mk_empty_dirs.

2019-08-21  Justin Squirek  <squirek@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst: Modify
        documentation to reflect expected behavior.
        * gnat_rm.texi: Regenerate.
        * sem_prag.adb (Analyze_Pragma): Modify handling of pragma
        Max_Entry_Queue_Length to not reject integer values of negative
        one.
        * sem_util.adb (Get_Max_Queue_Length): Add processing for values
        of negative one to fit within the current scheme.

2019-08-20  Arnaud Charlet  <charlet@adacore.com>

        * exp_unst.adb (Unnest_Subprograms, Unnest_Subprogram): Take
        inlining (-gnatn) into account.

2019-08-20  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch13.adb (Expand_N_Attribute_Definition_Clause, case
        Storage_Size): If the expression for Storage_Size is not static
        it may depend on characterstics of another type that may bot be
        frozen yet, so the elaboration of the expression for the aspect
        must be attached directly to the freeze actions of the type to
        which it applies.

2019-08-20  Piotr Trojanek  <trojanek@adacore.com>

        * exp_util.adb (Build_DIC_Procedure_Declaration): Set the last
        entity of the generated Default_Initial_Condition procedure in
        order to construct a proper entity chain.

2019-08-20  Yannick Moy  <moy@adacore.com>

        * exp_spark.adb (Expand_SPARK_N_Slice_Or_Indexed_Component):
        Renaming of function to apply to slices as well.
        (Expand_SPARK): Expand prefix of slices of access type.

2019-08-20  Bob Duff  <duff@adacore.com>

        * exp_aggr.adb (Expand_Array_Aggregate): Use build-in-place in
        the nonlimited case in STEP 4. This improves the efficiency of
        things like (1 .. 1000 => <>).  We still generate some code for
        that, unfortunately, but it is much improved.
        (Aggr_Assignment_OK_For_Backend): Return false if <> components
        are present.

2019-08-20  Bob Duff  <duff@adacore.com>

        * exp_ch6.adb (Needs_BIP_Alloc_Form): Call
        Requires_Transient_Scope rather than checking constrainedness
        and so forth.  We have previously improved
        Requires_Transient_Scope to return False in various cases,
        notably a limited record with an access discriminant. This
        change takes advantage of that to avoid using the secondary
        stack for functions returning such types.
        (Make_Build_In_Place_Call_In_Allocator): Be consistent by
        calling Needs_BIP_Alloc_Form rather than Is_Constrained and so
        forth.
        * sem_ch4.adb (Analyze_Allocator): The above change causes the
        compiler to generate code that is not legal Ada, in particular
        an uninitialized allocator for indefinite subtype.  This is
        harmless, so we suppress the error message in this case.

2019-08-20  Gary Dismukes  <dismukes@adacore.com>

        * ali.adb, ali.ads, aspects.adb, checks.ads, checks.adb,
        doc/gnat_rm/implementation_defined_pragmas.rst,
        doc/gnat_ugn/building_executable_programs_with_gnat.rst,
        einfo.ads, exp_aggr.adb, exp_ch11.adb, exp_ch3.ads, exp_ch4.adb,
        exp_disp.adb, inline.adb, libgnat/a-locale.ads,
        libgnat/s-soflin.ads, par_sco.adb, repinfo.adb, sem_ch5.adb,
        sem_disp.adb, sem_elab.adb, sem_eval.adb, sem_spark.adb,
        sem_spark.ads, sinfo.ads: Minor reformattings, typo fixes and
        and rewordings.

2019-08-20  Dmitriy Anisimkov  <anisimko@adacore.com>

        * adaint.c (__gnat_to_gm_time): On _WIN32, don't round time up
        to even second.

2019-08-20  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch3.adb (Analyze_Object_Declaration): If actual type is
        private and distinct from nominal type in declaration, propagate
        flags Is_Constr_Subt_For_U_Nominal and _UN_Aliased to full view
        of private type.

2019-08-20  Ed Schonberg  <schonberg@adacore.com>

        * exp_attr.adb (Expand_Loop_Entry_Attribute): When expanding a
        loop entry attribute for a while_loop we construct a function
        that incorporates the expanded condition of the loop. The itypes
        that may be generated in that expansion must carry the scope of
        the constructed function for proper handling in gigi.

2019-08-20  Ed Schonberg  <schonberg@adacore.com>

        * exp_disp.adb (Build_Class_Wide_Check, Replace_Formals): When a
        dispatching call tp a subprogram with a class-wide precondition
        occurrs in the same declarative part as the ancestor subprogram
        being called, the`expression for the precondition has not been
        analyzed yet. Such a call may appear, e.g. in an expression
        function. In that case, the replacement of formals by actuals in
        the call cannot use the formal entities of the subprogram being
        called, and the occurrence of the formals in the expression must
        be located by name (Chars fields) as would be done at a later
        freeze point, when the expression is resolved in the context of
        the subprogram itself.

2019-08-20  Bob Duff  <duff@adacore.com>

        * sem_prag.adb (Persistent_BSS): If an initialization is present
        because of Initialize_Scalars or Normalize_Scalars, generate an
        implicit pragma Suppress_Initialization to remove that, because
        initialization is not allowed for these variables. Other
        initializations remain illegal.

2019-08-20  Gary Dismukes  <dismukes@adacore.com>

        * sem_ch3.adb (OK_For_Limited_Init_In_05): In the case of type
        conversions, apply the recursive call to the Original_Node of
        the expression Exp rather than the Expression of the
        Original_Node, in the case where Exp has been rewritten;
        otherwise, when Original_Node is the same as Exp, apply the
        recursive call to the Expression.
        (Check_Initialization): Revise condition for special check on
        type conversions of limited function calls to test Original_Node
        (avoiding spurious errors on expanded unchecked conversions
        applied to build-in-place dispatching calls).

2019-08-20  Patrick Bernardi  <bernardi@adacore.com>

        * exp_aggr.adb (Expand_Record_Aggregate): Always convert a
        record Aggregate to assignment statements if the option
        Aggregate_Individually_Assign is set.
        * opt.ads (Aggregate_Individually_Assign): New option.
        * par-prag.adb (Prag): Add Pragma_Aggregate_Individually_Assign.
        * sem_prag.adb (Analyze_Pragma): Likewise.
        * snames.ads-tmpl: Add Pragma_Aggregate_Individually_Assign and
        Name_Aggregate_Individually_Assign.
        * doc/gnat_rm/implementation_defined_pragmas.rst: Document
        pragma Aggregate_Individually_Assign.
        * gnat_rm.texi: Regenerate.

2019-08-20  Bob Duff  <duff@adacore.com>

        * par-ch4.adb: Minor wording change in error messages.
        * sem_aggr.adb (Resolve_Delta_Aggregate): Emit an error for Ada
        versions prior to Ada 2020.

2019-08-20  Bob Duff  <duff@adacore.com>

        * freeze.adb (Is_Atomic_VFA_Aggregate): Make the temp for
        initialization of the atomic variable be constant. This is
        cleaner, and might improve efficiency.

2019-08-20  Eric Botcazou  <ebotcazou@adacore.com>

        * repinfo.adb (List_Record_Info): In -gnatR4 mode, set the
        relevant flag on the implicit base type of a record subtype.

2019-08-20  Bob Duff  <duff@adacore.com>

        * sem_eval.adb (Expr_Value): Implement the case of an unchecked
        conversion of a static expression.

2019-08-20  Bob Duff  <duff@adacore.com>

        * sem_ch13.adb (Is_Null_Array): New function, used to detect the
        null array case; used to warn about uncheckedly converting to a
        zero-sized array.  It is unfortunate that we can't just check
        the size, and warn on all cases of converting from a
        nonzero-sized type to a zero-sized one. That's because "0" means
        two different things: "size is zero" and "size is unknown".
        Until we fix that design flaw, we need this more targeted fix.

2019-08-20  Bob Duff  <duff@adacore.com>

        * libgnat/a-cborma.adb, libgnat/a-cborse.adb (Clear): Repeatedly
        call Delete. This avoids clearing the free list, which
        substantially speeds up future Delete operations.

2019-08-20  Bob Duff  <duff@adacore.com>

        * sem_ch13.adb (Component_Order_Check): New procedure to check
        for out-of-order clauses.
        * warnsw.ads, warnsw.adb: New -gnatw_r switch.
        * doc/gnat_ugn/building_executable_programs_with_gnat.rst:
        Document new switch.
        * gnat_ugn.texi: Regenerate.

2019-08-20  Bob Duff  <duff@adacore.com>

        * sem_ch13.adb (Object_Size): Give an error for zero. It really
        rubs me the wrong way that we don't honor "for T'Object_Size use
        0;", but it's not important enough to fix. In any case, if we're
        not going to obey the clause, we should give an error.

2019-08-20  Bob Duff  <duff@adacore.com>

        * errout.adb (Error_Msg_Internal): Set Warn_Err in case of
        Is_Style_Msg.
        * erroutc.adb (Output_Msg_Text): Do Warnings_Treated_As_Errors
        processing and [warning-as-error] modification for style
        messages.  Clean up code, simplify, remove unnecessary block
        statement, add renaming of table entry.
        * erroutc.ads (Warning_Treated_As_Error): Fix comment: no such
        thing as Set_Warning_As_Error.
        * opt.ads: Clean up comments and move related declarations near
        each other.
        * par-prag.adb: Process Warning_As_Error. This is necessary
        because many style warning happen during parsing.
        * sem_prag.adb: Use new Acquire_Warning_Match_String.
        * sem_util.ads, sem_util.adb (Acquire_Warning_Match_String): New
        function shared by par-prag.adb and sem_prag.adb. Replaces the
        procedure in sem_prag.adb. Avoid use of global variables.
        * stringt.ads, stringt.adb (To_String): New function to convert
        String_Id to String.
        * doc/gnat_rm/implementation_defined_pragmas.rst: Document the
        new feature.
        * gnat_rm.texi: Regenerate.

2019-08-20  Eric Botcazou  <ebotcazou@adacore.com>

        * lib.ads: Add with clause for GNAT.HTable.
        Add pragma Inline for Is_Loaded and alphabetize the list.
        (Unit_Name_Table_Size): New constant.
        (Unit_Name_Header_Num): New subtype.
        (Unit_Name_Hash): New function declaration.
        (Unit_Names): New simple hash table.
        (Init_Unit_Name): New procedure declaration.
        * lib.adb (Set_Unit_Name): Unregister the old name in the table,
        if any, and then register the new name.
        (Init_Unit_Name): New procedure.
        (Is_Loaded): Reimplement using a lookup in the names table.
        (Remove_Unit): Unregister the name.
        (Unit_Name_Hash): New function.
        * lib-load.adb (Create_Dummy_Package_Unit): Call Init_Unit_Name.
        (Load_Unit): Use a lookup in the names table to find out whether
        the unit has already been loaded.  Call Init_Unit_Name and then
        Remove_Unit if the loading has failed.
        (Make_Child_Decl_Unit): Call Init_Unit_Name.
        (Make_Instance_Unit): Likewise.
        * lib-writ.adb (Ensure_System_Dependency): Likewise.

2019-08-20  Bob Duff  <duff@adacore.com>

        * sem_ch13.adb (Record_Hole_Check): Initialize After_Last.

2019-08-20  Piotr Trojanek  <trojanek@adacore.com>

        * impunit.adb (Get_Kind_Of_Unit): Revert change for adapting
        this routine for gnatprove.

2019-08-20  Arnaud Charlet  <charlet@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst: Document
        requirements for Pragma Lock_Free.
        * gnat_rm.texi: Regenerate.

2019-08-20  Philippe Gil  <gil@adacore.com>

        * bindgen.adb (Gen_Main): Set gnat_argc/gnat_argv to argc/argv
        only when still uninitialized.

2019-08-20  Bob Duff  <duff@adacore.com>

        * libgnat/g-comlin.ads (Exit_From_Command_Line): Fix
        documentation for GNAT.Command_Line.

2019-08-20  Pierre-Marie de Rodat  <derodat@adacore.com>

        PR ada/91492
        * gcc-interface/lang.opt (-fdump-scos): Add missing dot at the
        end of the documentation.

2019-08-20  Richard Sandiford  <richard.sandiford@arm.com>

        * gcc-interface/misc.c (default_pass_by_ref): Update call to
        pass_by_reference.

2019-08-19  Bob Duff  <duff@adacore.com>

        * doc/gnat_rm/implementation_advice.rst: Fix documentation for
        stream oriented attributes.
        * gnat_rm.texi: Regenerate.

2019-08-19  Gary Dismukes  <dismukes@adacore.com>

        * einfo.ads (E_Function, E_Procedure): Update comments to
        reflect that Renamed_Entity is also used for nongeneric
        subprograms.

2019-08-19  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_prag.adb (Is_Before_First_Decl): Deal with rewritten
        pragmas.

2019-08-19  Bob Duff  <duff@adacore.com>

        * sem_warn.adb (Warn_On_Unreferenced_Entity): Suppress warning
        on formal parameters of dispatching operations.

2019-08-19  Ed Schonberg  <schonberg@adacore.com>

        * sem_res.adb (Resolve_Call): A call to an expression function
        freezes when expander is active, unless the call appears within
        the body of another expression function,

2019-08-19  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/s-os_lib.ads, libgnat/s-os_lib.adb (To_Ada, To_C): New
        routines.

2019-08-19  Bob Duff  <duff@adacore.com>

        * exp_attr.adb (Attribute_Valid): Correct the handling of
        private types where the full type is modular. System.Address is
        an example. Otherwise, we convert uncheckedly to a signed type,
        so we get an incorrect range 0 .. -1, for which all values will
        fail.  The 'Valid attribute is illegal for such types, but we
        generate such illegal attribute_references for 'Valid_Scalars,
        and we generate 'Valid_Scalars when the -gnateV switch is used.
        Rename Btyp --> PBtyp to avoid hiding the outer Btyp, which was
        confusing.
        * libgnat/a-except.adb: Set the Exception_Raised component.
        Otherwise, we have incorrect reads of invalid data.

2019-08-19  Pierre-Marie de Rodat  <derodat@adacore.com>

        * libgnat/a-cgaaso.ads, libgnat/a-cgarso.ads,
        libgnat/a-cogeso.ads, libgnat/a-contai.ads,
        libgnat/a-locale.ads: Import documentation from the RM.

2019-08-19  Jerome Guitton  <guitton@adacore.com>

        * Makefile.rtl (system.o): New target to add generation of
        target properties.
        * gcc-interface/Makefile.in (install-gnatlib): Install
        ada_target_properties.

2019-08-19  Eric Botcazou  <ebotcazou@adacore.com>

        * inline.adb (Add_Inlined_Body): Do not special-case instances
        that are compilation units.
        (Add_Pending_Instantiation): Likewise.
        (Instantiate_Body): Skip instantiations that are compilation
        units and have already been performed.
        * sem_ch12.adb (Needs_Body_Instantiated): Do not special-case
        instances that are compilation units.
        (Load_Parent_Of_Generic): Be prepared for parent that is a
        compilation unit but whose instantiation node has not been
        replaced.

2019-08-19  Eric Botcazou  <ebotcazou@adacore.com>

        * inline.adb (Initialize, Lock): Deal with
        Called_Pending_Instantiations.

2019-08-19  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch6.adb (Check_Synchronized_Overriding): Complete
        predicate that applies legality check in 9.4 (11.9/2): if an
        inherited subprogram is implemented by a protected procedure or
        entry, its first paarameter must be out, in_out or
        access_to_varible.

2019-08-19  Javier Miranda  <miranda@adacore.com>

        PR ada/65696
        * exp_atag.ads, exp_atag.adb (Build_Inherit_Predefined_Prims):
        Adding formal to specify how many predefined primitives are
        inherited from the parent type.
        * exp_disp.adb (Number_Of_Predefined_Prims): New subprogram.
        (Make_Secondary_DT): Compute the number of predefined primitives
        of all tagged types (including tagged types not defined at
        library level).  Previously we unconditionally relied on the
        Max_Predef_Prims constant value when building the dispatch
        tables of tagged types not defined at library level (thus
        consuming more memory for their dispatch tables than required).
        (Make_DT): Compute the number of predefined primitives that must
        be inherited from their parent type when building the dispatch
        tables of tagged types not defined at library level. Previously
        we unconditionally relied on the Max_Predef_Prims constant value
        when building the dispatch tables of tagged types not defined at
        library level (thus copying more data than required from the
        parent type).

2019-08-19  Bob Duff  <duff@adacore.com>

        * sem_ch13.adb (Record_Hole_Check): Procedure to check for holes
        that incudes processing type extensions. A type extension is
        processed by first calling Record_Hole_Check recursively on the
        parent type to compute the bit number after the last component
        of the parent.

2019-08-19  Gary Dismukes  <dismukes@adacore.com>

        * checks.adb (Length_Mismatch_Info_Message): New function in
        Selected_Length_Checks to return a message indicating the
        element counts for the mismatched lengths for a failed
        compile-time length check.
        (Plural_Or_Singular_Ending): Support function in
        Length_Mismatch_Info_Message to return either "" or "s", for
        concatenating to the end of words.
        (Selected_Length_Checks): Pass the result of
        Length_Mismatch_Info_Message as an extra warning message to
        Compile_Time_Constraint_Error to indicate the mismatched lengths
        for a failed compile-time length check.
        * sem_util.ads (Compile_Time_Constraint_Error): Add an optional
        message formal (Extra_Msg), defaulted to the empty string.
        * sem_util.adb (Compile_Time_Constraint_Error): Output an extra
        message following the main warning message (when Extra_Msg is
        not the empty string).

2019-08-19  Patrick Bernardi  <bernardi@adacore.com>

        * socket.c: Removed the redefinition of getaddrinfo, getnameinfo
        and freeaddrinfo to internal VxWorks kernel calls because they
        are, well, internal kernel calls and cannot be called from RTPs.
        VxWorks provides the necessary components to call these routines
        directly.

2019-08-19  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_dist.adb (Is_Generic_Actual_Subtype): New predicate.
        (Build_From_Any_Call, Build_To_Any_Call, Build_TypeCode_Call):
        Use it instead of Is_Generic_Actual_Type flag to detect subtypes
        representing generic actual types.

2019-08-19  Ed Schonberg  <schonberg@adacore.com>

        * sem_warn.adb (Check_References, Generic_Body_Formal): When a
        formal parameter of a generic subprogram is not referenced in
        the body, place the corresponding warning on the corresponding
        entity in the specification of the generic body, as is done for
        non-generic subprograms.

2019-08-19  Bob Duff  <duff@adacore.com>

        * errout.ads (Size_Too_Small_Message): New constant.
        * errout.adb, freeze.adb, sem_ch13.adb: Use it.

2019-08-19  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_dist.adb (Build_Package_Stubs): Do not specifically visit
        the declarations of an N_Subprogram_Instantiation node.

2019-08-19  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Document missing
        metrics switches.

2019-08-19  Piotr Trojanek  <trojanek@adacore.com>

        * sem_ch12.adb (Get_Unit_Instantiation_Node): Simplify Nkind_In
        membership test.
        * sem.adb (Depends_On_Main): Whitespace cleanup; only assign a
        local variable if needed.

2019-08-19  Claire Dross  <dross@adacore.com>

        * sem_spark.ads, sem_spark.adb (Is_Pledge_Function): New
        parameter of the generic. Function used to decide whether a
        function is a pledge function.
        (Check_Not_Borrowed): Disable check inside the second parameter
        of a pledge function for the path borrowed by the first
        parameter. Also disable checks for entities inside a Global
        contract.

2019-08-19  Joffrey Huguet  <huguet@adacore.com>

        * libgnat/a-cfdlli.ads, libgnat/a-cfhama.ads,
        libgnat/a-cfinve.ads, libgnat/a-cforma.ads,
        libgnat/a-cofove.ads, libgnat/a-cofuma.ads,
        libgnat/a-cofuve.ads: Add formal function parameter "=" (L, R :
        Element_Type) to the generic packages.

2019-08-19  Eric Botcazou  <ebotcazou@adacore.com>

        * opt.ads: Clean up left-overs of earlier implementation in
        comment:

2019-08-19  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch3.adb (Derived_Enumeration_Type): Do no freeze anonymous
        base type if the bounds in the derived type declaration are
        literals of the type.

2019-08-19  Yannick Moy  <moy@adacore.com>

        * sem_res.adb (Resolve_Call): Check non-aliasing rules before
        GNATprove inlining.

2019-08-19  Eric Botcazou  <ebotcazou@adacore.com>

        * inline.adb (Add_Inlined_Body): Do not add pending
        instantiations.
        * sem_ch12.adb (Needs_Body_Instantiated): New predicate.
        (Analyze_Package_Instantiation): Use it to decide whether to add
        a pending instantiation for the body of the package.

2019-08-19  Olivier Hainque  <hainque@adacore.com>

        * gcc-interface/trans.c (Acc_Loop_to_gnu): Return the openacc
        BIND_EXPR node we have constructed on purpose.  Remove unused
        variable.

2019-08-19  Pierre-Marie de Rodat  <derodat@adacore.com>

        * gcc-interface/lang.opt (fdump-scos): Define.
        * gcc-interface/misc.c (gnat_handle_option): Handle
        OPT_fdump_scos.

2019-08-14  Joffrey Huguet  <huguet@adacore.com>

        * libgnat/a-cofuba.ads: Add a Length attribute to type
        Container. Add a type Array_Base which replaces the previous
        Elements attribute of Container.
        (Content_Init): New subprogram. It is used to initialize the
        Base attribute of Container.
        * libgnat/a-cofuba.adb (Resize): New subprogram. It is used to
        resize the underlying array of a container if necessary.
        (=, <=, Find, Get, Intersection, Length, Num_Overlaps, Set,
        Union): Update to match changes in type declarations.
        (Add): Modify body to damp the time and space cost in a specific
        case.
        (Content_Init): New subprogram. It is used to initialize the
        Base attribute of Container.
        (Remove): Modify body to damp the time and space cost in a
        specific case.

2019-08-14  Bob Duff  <duff@adacore.com>

        * sem_ch13.adb (Get_Alignment_Value): Return 1 for Alignment 0,
        and do not give an error.
        * doc/gnat_rm/representation_clauses_and_pragmas.rst: Update the
        corresponding documentation.
        * gnat_rm.texi: Regenerate.

2019-08-14  Eric Botcazou  <ebotcazou@adacore.com>

        * inline.adb (Add_Pending_Instantiation): Fix off-by-one error
        in the comparison against the maximum number of instantiations.

2019-08-14  Eric Botcazou  <ebotcazou@adacore.com>

        * inline.adb (Add_Pending_Instantiation): Use greater-or-equal
        in the comparison against the maximum number of instantiations.

2019-08-14  Ed Schonberg  <schonberg@adacore.com>

        * sem_aux.adb (Next_Rep_Item): If a node in the rep chain
        involves a Ghost aspect it may have been replaced by a null
        statement; use the original node to find next Rep_Item.
        * repinfo.adb (List_Entities): Do not list an Ignored
        Ghost_Entity, for which information may have been deleted.

2019-08-14  Bob Duff  <duff@adacore.com>

        * sem_prag.ads, sem_prag.adb
        (Process_Compile_Time_Warning_Or_Error): In parameterless
        version, improve detection of whether we are in a generic unit
        to cover the case of an instance within a generic unit.
        (Process_Compile_Time_Warning_Or_Error): Rename the
        two-parameter version to be
        Validate_Compile_Time_Warning_Or_Error, and do not export it.
        Issue a warning if the condition is not known at compile time.
        The key point is that the warning must be given only for pragmas
        deferred to the back end, because the back end discovers
        additional values that are known at compile time.  Previous
        changes in this ticket have enabled this by deferring to the
        back end without checking for special cases such as 'Size.
        (Validate_Compile_Time_Warning_Or_Error): Rename to be
        Defer_Compile_Time_Warning_Error_To_BE.
        * warnsw.ads, warnsw.adb (Warn_On_Unknown_Compile_Time_Warning):
        Add new switches -gnatw_c and -gnatw_C to control the above
        warning.
        * doc/gnat_ugn/building_executable_programs_with_gnat.rst:
        Document new switches.
        * gnat_ugn.texi: Regenerate.

2019-08-14  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Might_Inline_Subp): Rework comment and restrict
        the shortcut based on Is_Inlined to the back-end inlining case.

2019-08-14  Bob Duff  <duff@adacore.com>

        * inline.adb (Check_And_Split_Unconstrained_Function): Ignore
        protected functions to get rid of spurious error. The
        transformation done by this procedure triggers legality errors
        in the generated code in this case.

2019-08-14  Bob Duff  <duff@adacore.com>

        * sem_prag.adb (Process_Compile_Time_Warning_Or_Error): Defer
        processing to the back end in all cases where the pragma's
        condition is not known at compile time during the front end
        (except in generics), as opposed to detecting 'Size attributes
        and the like. This ensures that we take advantage of whatever
        can be compile-time known after running the back end, as opposed
        to having the front end guess what the back end can do.  Remove
        a little duplicated code at the call site.
        * gnat1drv.adb (Post_Compilation_Validation_Checks): Unlock the
        Elists while in Validate_Compile_Time_Warning_Errors, because it
        does analysis and name resolution, which sometimes involves
        adding Elists.

2019-08-14  Eric Botcazou  <ebotcazou@adacore.com>

        * einfo.ads (Is_Called): Document new usage on E_Package
        entities.
        * einfo.adb (Is_Called): Accept E_Package entities.
        (Set_Is_Called): Likewise.
        * exp_ch6.adb (Expand_Call_Helper): Move code dealing with
        instances for back-end inlining to Add_Inlined_Body.
        * inline.ads: Remove with clauses for Alloc and Table.
        (Pending_Instantiations): Move to...
        * inline.adb: Add with clauses for Alloc, Uintp, Table and
        GNAT.HTable.
        (Backend_Instances): New variable.
        (Pending_Instantiations): ...here.
        (Called_Pending_Instantiations): New table.
        (Node_Table_Size): New constant.
        (Node_Header_Num): New subtype.
        (Node_Hash): New function.
        (To_Pending_Instantiations): New hash table.
        (Add_Inlined_Body): Bail out early for subprograms in the main
        unit or subunit.  Likewise if the Is_Called flag is set.  If the
        subprogram is an instance, invoke Add_Inlined_Instance.  Call
        Set_Is_Called earlier.  If the subrogram is within an instance,
        invoke Add_Inlined_Instance.  Also deal with the case where the
        call itself is within an instance.
        (Add_Inlined_Instance): New procedure.
        (Add_Inlined_Subprogram): Remove conditions always fulfilled.
        (Add_Pending_Instantiation): Move the defence against ludicruous
        number of instantiations to here. When back-end inlining is
        enabled, associate an instantiation with its index in table and
        mark a few selected kinds of instantiations as always needed.
        (Initialize): Set Backend_Instances to No_Elist.
        (Instantiate_Body): New procedure doing the work extracted
        from...
        (Instantiate_Bodies): ...here.  When back-end inlining is
        enabled, loop over Called_Pending_Instantiations instead of
        Pending_Instantiations.
        (Is_Nested): Minor tweak.
        (List_Inlining_Info): Also list the contents of
        Backend_Instances.
        * sem_ch12.adb (Might_Inline_Subp): Return early if Is_Inlined
        is set and otherwise set it before returning true.
        (Analyze_Package_Instantiation): Remove the defence against
        ludicruous number of instantiations.  Invoke
        Remove_Dead_Instance instead of doing the removal manually if
        there is a guaranteed ABE.

2019-08-14  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch3.adb (Predef_Spec_Or_Body): For an equality operation
        of an interface type, create an expression function (that
        returns False) rather than declaring an abstract function.
        * freeze.adb (Check_Inherited_Conditions): Set Needs_Wrapper to
        False unconditionally at the start of the loop creating wrappers
        for inherited operations.

2019-08-14  Bob Duff  <duff@adacore.com>

        * table.adb: Assert that the table is not locked when increasing
        Last, even if it doesn't cause reallocation.  In other words,
        assert that on operations that MIGHT cause reallocation.
        * table.ads: Fix comment accordingly.

2019-08-14  Arnaud Charlet  <charlet@adacore.com>

        * doc/gnat_ugn/gnat_and_program_execution.rst: Remove
        documentation of gnatelim.

2019-08-14  Bob Duff  <duff@adacore.com>

        * sem_prag.adb (Validate_Compile_Time_Warning_Error): Attach the
        warning to the Sloc of the first pragma argument, rather than to
        the pragma itself. This is to make pragmas processed after the
        back end use the same Sloc as pragmas processed earlier, in the
        front end. There's no reason for this discrepancy, and it
        hinders further work on this ticket.

2019-08-14  Bob Duff  <duff@adacore.com>

        * sem.ads (Inside_A_Generic): Remove the ??? comment.

2019-08-14  Eric Botcazou  <ebotcazou@adacore.com>

        * inline.ads (Pending_Descriptor): Delete.
        * inline.adb (Initialize): Do not initialize it.
        * sem_ch12.adb (Delay_Descriptors): Delete.
        (Analyze_Package_Instantiation): Call
        Set_Delay_Subprogram_Descriptors instead of Delay_Descriptors
        throughout.

2019-08-14  Bob Duff  <duff@adacore.com>

        * exp_aggr.adb (Init_Hidden_Discriminants): Avoid processing the
        wrong discriminant, which could be of the wrong type.

2019-08-14  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Analyze_Instance_And_Renamings): Do not reset
        the Is_Generic_Instance flag previously set on the package
        generated for the instantiation of a generic subprogram.

2019-08-14  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch4.adb (Expand_N_Quantified_Expression): Freeze
        explicitly the type of the loop parameter.

2019-08-14  Javier Miranda  <miranda@adacore.com>

        * sem_util.adb (New_Copy_Tree.Copy_Node_With_Replacement):
        Update the Chars attribute of identifiers.

2019-08-14  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb, sem_spark.ads (Is_Legal): New function exposed
        for use in GNATprove, to test legality rules not related to
        permissions.
        (Check_Declaration_Legality): Extract the part of
        Check_Declaration that checks rules not related to permissions.
        (Check_Declaration): Call the new Check_Declaration_Legality.
        (Check_Type_Legality): Rename of Check_Type. Introduce
        parameters to force or not checking, and update a flag detecting
        illegalities.
        (Check_Node): Ignore attribute references in statement position.

2019-08-14  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb (Check_Old_Loop_Entry): New procedure to check
        correct use of Old  and Loop_Entry.
        (Check_Node): Check subprogram contracts.
        (Check_Pragma): Check Loop_Variant.
        (Check_Safe_Pointers): Apply checking to library-level
        subprogram  declarations as well, in order to check their
        contract.

2019-08-14  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb (Is_Subpath_Expression): Take into account
        conversion and qualification.

2019-08-14  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch7.adb (Install_Private_Declarations)
        <Swap_Private_Dependents>: Do not rely solely on the
        Is_Child_Unit flag on the unit to recurse.
        (Uninstall_Declarations) <Swap_Private_Dependents>: New
        function.  Use it to recurse on the private dependent entities
        for child units.

2019-08-14  Javier Miranda  <miranda@adacore.com>

        * exp_aggr.adb (Is_CCG_Supported_Aggregate): Return False for
        arrays with bounds not known at compile time.

2019-08-14  Ed Schonberg  <schonberg@adacore.com>

        * sem_util.adb (New_Copy_Tree, Visit_Entity): A quantified
        expression includes the implicit declaration of the loop
        parameter. When a quantified expression is copied during
        expansion, for example when building the precondition code from
        the generated pragma, a new loop parameter must be created for
        the new tree, to prevent duplicate declarations for the same
        symbol.

2019-08-14  Yannick Moy  <moy@adacore.com>

        * sem_disp.adb (Check_Dispatching_Operation): Update assertion
        for the separate declarations created in GNATprove mode.
        * sem_disp.ads (Is_Overriding_Subprogram): Update comment.
        * sem_elab.adb (SPARK_Processor): Fix test for checking of
        overriding primitives.

2019-08-14  Eric Botcazou  <ebotcazou@adacore.com>

        * inline.adb (Add_Inlined_Body): Tweak comments.
        (List_Inlining_Info): Also list information about non-main
        units.

2019-08-14  Gary Dismukes  <dismukes@adacore.com>

        * sem_ch4.adb (Analyze_Selected_Component): In the case where
        the prefix is of a concurrent type, and the selected entity
        matching the selector is the first private declaration of the
        type (such as the first local variable in a task's body), set
        Is_Private_Op.

2019-08-14  Piotr Trojanek  <trojanek@adacore.com>

        * einfo.adb (Is_Generic_Actual_Subprogram): Replace repeated
        calls to Ekind with Ekind_In.

2019-08-13  Richard Sandiford  <richard.sandiford@arm.com>

        PR middle-end/91421
        * gcc-interface/trans.c (gigi): Call set_decl_buillt_in_function.
        (Call_to_gnu): Use DECL_FE_FUNCTION_CODE instead of DECL_FUNCTION_CODE.

2019-08-13  Eric Botcazou  <ebotcazou@adacore.com>

        * ali.ads (Linker_Option_Record): Remove Original_Pos component.
        * ali.adb (Scan_ALI): Do not set it.

2019-08-13  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch3.adb (Build_Derived_Concurrent_Type): Add a couple of
        local variables and use them.  When the derived type fully
        constrains the parent type, rewrite it as a subtype of an
        implicit (unconstrained) derived type instead of the other way
        around.
        (Copy_And_Build): Deal with concurrent types and use predicates.
        (Build_Derived_Private_Type): Build the full derivation if
        needed for concurrent types too.
        (Build_Derived_Record_Type): Add marker comment.
        (Complete_Private_Subtype): Use predicates.

2019-08-13  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch3.adb (Check_Generic_Ancestor): New subprogram,
        aubsidiary to Build_Derived_Record_Type. to enforce the rule
        that a type extension declared in a generic body cznnot have an
        ancestor that is a generic formal (RM 3.9.1 (4/2)). The rule
        applies to all ancestors of the type, including interface
        progenitors.

2019-08-13  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch3.adb (Build_Underlying_Full_View): Delete.
        (Complete_Private_Subtype): Do not set the full view on the
        private subtype here.  If the full base is itself derived from
        private, do not re-derive the parent type but instead constrain
        an existing underlying full view.
        (Prepare_Private_Subtype_Completion): Do not get to the
        underlying full view, if any.  Set the full view on the private
        subtype here.
        (Process_Full_View): Likewise.
        * sem_ch12.adb (Check_Generic_Actuals): Also set
        Is_Generic_Actual_Type on the full view if the type of the
        actual is private.
        (Restore_Private_Views): Also reset Is_Generic_Actual_Type on
        the full view if the type of the actual is private.
        * sem_eval.adb (Subtypes_Statically_Match): Remove bypass for
        generic actual types.

2019-08-13  Javier Miranda  <miranda@adacore.com>

        * sem_res.adb (Resolve_Selected_Component): When the type of the
        component is an access to a class-wide type and the type of the
        context is an access to a tagged type the relevant type is that
        of the component (since in such case we may need to generate
        implicit type conversions or dispatching calls).

2019-08-13  Ed Schonberg  <schonberg@adacore.com>

        * exp_aggr.adb (Aggr_Assignment_OK_For_Backend):  Preanalyze
        expression, rather do a full analysis, to prevent unwanted
        removal of side effects which mask the intent of the expression.

2019-08-13  Eric Botcazou  <ebotcazou@adacore.com>

        * impunit.adb (Non_Imp_File_Names_95): Add
        GNAT.Branch_Prediction.

2019-08-13  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch6.adb: Remove with and use clauses for Sem_Ch12.
        (Expand_Call_Helper): Swap the back-end inlining case and the
        special front-end expansion case.  In back-end inlining mode, do
        not invoke Add_Inlined_Body unless the call may be inlined.
        * inline.ads (Add_Pending_Instantiation): New function moved
        from...
        * inline.adb (Add_Inlined_Body): Simplify comment.  Turn test on
        the enclosing unit into assertion.
        (Add_Pending_Instantiation): New function moved from...
        * sem_ch12.ads (Add_Pending_Instantiation): ...here.
        * sem_ch12.adb (Add_Pending_Instantiation): ...here.

2019-08-13  Eric Botcazou  <ebotcazou@adacore.com>

        * sem.adb (Do_Analyze): Recompute Style_Check_Max_Line_Length
        after restoring Style_Max_Line_Length.

2019-08-13  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch13.adb (Check_Iterator_Functions): Protect against
        cascaded errors.

2019-08-13  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch8.adb (Analyze_Subprogram_Renaming): Do no suppress mode
        conformance checks on child unit instance that is a compilation
        unit.

2019-08-13  Gary Dismukes  <dismukes@adacore.com>

        * exp_dbug.adb (Fully_Qualify_Name): Add full name qualification
        for the E_Exception case.

2019-08-13  Gary Dismukes  <dismukes@adacore.com>

        * exp_aggr.adb (Aggr_Size_OK): Compute the aggregate size using
        universal arithmetic, to avoid situations where the size
        computation overflows.

2019-08-13  Justin Squirek  <squirek@adacore.com>

        * repinfo.adb (List_Scalar_Storage_Order): Modify conditionals
        for displaying ordering to always be triggered when -gnatR4 is
        in effect.

2019-08-13  Justin Squirek  <squirek@adacore.com>

        * aspects.adb, aspects.ads: Register new aspect.
        * par-prag.adb (Prag): Register new pragma
        * sem_ch13.adb (Analyze_Aspect_Specifications): Add processing
        for new aspect similar to Aspect_Max_Entry_Queue_Length.
        * sem_prag.adb, sem_prag.ads (Analyze_Pragma): Register new
        pragma and set it to use the same processing as
        Pragma_Max_Queue_Length.
        * snames.ads-tmpl: Move definition of
        Name_Max_Entry_Queue_Length so that it can be processed as a
        pragma in addition to a restriction and add an entry for the
        pragma itself.

2019-08-13  Yannick Moy  <moy@adacore.com>

        * sem_ch4.adb (Analyze_Allocator): Do not insert subtype
        declaration for allocator inside a spec expression.

2019-08-13  Yannick Moy  <moy@adacore.com>

        * sem_res.adb (Resolve_Call): Do not inline calls inside record
        types.

2019-08-13  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch4.adb (Analyze_One_Call): Remove bypass for type
        mismatch in nested instantiations.
        * sem_ch8.adb (Find_Nearer_Entity): New function.
        (Find_Renamed_Entity): Use it to disambiguate the candidates for
        the renaming generated for an instantiation when it is
        ambiguous.

2019-08-13  Eric Botcazou  <ebotcazou@adacore.com>

        * gnat1drv.adb (Adjust_Global_Switches): Do not set
        Back_End_Inlining in ASIS mode either.

2019-08-13  Olivier Hainque  <hainque@adacore.com>

        * libgnat/s-win32.ads: Define size_t and fix the MapViewOfFile
        binding to use it instead of DWORD for the dwNumberOfBytesToMap
        argument.
        * libgnat/g-sercom__mingw.adb (Read): State which definition of
        size_t to fetch in call to Last_Index.

2019-08-13  Arnaud Charlet  <charlet@adacore.com>

        * gcc-interface/Make-lang.in: Remove unused TRACE variable. Pass
        LN_S to relevant gnatlib targets.
        * gcc-interface/Makefile.in: Systematically pass LN_S to
        relevant gnatlib targets.

2019-08-13  Yannick Moy  <moy@adacore.com>

        * sem_dim.adb (Analyze_Dimension,
        Analyze_Dimension_Array_Aggregate, Analyze_Dimension_Call,
        Analyze_Dimension_Extension_Or_Record_Aggregate): Return
        immediately when inside an inlined body.
        * sem_res.adb (Resolve_Call): Remove special checking now done
        inside Analyze_Dimension_Call.

2019-08-13  Justin Squirek  <squirek@adacore.com>

        * exp_ch4.adb (Expand_N_Allocator): Add condition to detect
        library-level object declarations

2019-08-13  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/gnat_ugn/building_executable_programs_with_gnat.rst
        (-gnateT): Document Double_Float_Alignment parameter and fix
        description of Double_Scalar_Alignment parameter.
        * gnat_ugn.texi: Regenerate.

2019-08-13  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch6.adb (Expand_Call_Helper): If back-end inlining is
        enabled, also instantiate the body of a generic unit containing
        a subprogram subject to aspect/pragma Inline_Always at
        optimization level zero.
        * sem_ch12.adb (Might_Inline_Subp): Minor tweak.
        (Analyze_Package_Instantiation): Do not instantiate the package
        body because of inlining considerations if the instantiation is
        done in a generic unit.  Move around similar condition involving
        the main unit.  Add test on Back_End_Inlining to processing for
        front-end inlining.

2019-08-13  Javier Miranda  <miranda@adacore.com>

        * exp_disp.adb (Make_Secondary_DT): Handle record type
        derivations that have interface components located at fixed
        positions and interface components located at variable offset.
        The offset of components located at fixed positions is computed
        using the dummy object (similar to the case where all the
        interface components are located at fixed positions).
        (Make_DT): Build the dummy object for all tagged types that
        implement interface types (that is, build it also for types with
        variable size components), and use the dummy object to compute
        the offset of all tag components located at fixed positions when
        initializing the Interface_Table object.

2019-08-13  Justin Squirek  <squirek@adacore.com>

        * gnatcmd.adb (GNATCmd): Add constant for new compiler switch
        --help-ada, and include usage subprogram. Add line to usage help
        explaining the new flag.
        (GNATCmd_Usage): Rename from locally declared Usage so as not to
        confuse with the newly imported version. Add new argument case
        for --help-ada and add bug report email to implicit display of
        help without the --help flag so as to unify output between the
        two cases.

2019-08-13  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/g-comlin.adb (Getopt): Quote unrecognized switch in
        Invalid_Switch exception message.

2019-08-13  Yannick Moy  <moy@adacore.com>

        * sem_util.adb (Traverse_More_Func): Take into account
        Loop_Actions inside N_Iterated_Component_Association nodes.
        * sinfo.ads: Document correctly Loop_Actions as a field of nodes
        of kind N_Iterated_Component_Association.

2019-08-13  Claire Dross  <dross@adacore.com>

        * libgnat/a-cfinve.adb, libgnat/a-cofove.adb (Find_Index,
        Reverse_Find_Index): Use bigger type to avoid range check
        failure at the last loop iteration.

2019-08-12  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/g-socket.adb (Is_IPv6_Address): Check that no less
        then 2 colons in IPv6 numeric address.

2019-08-12  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/g-comlin.ads, libgnat/g-comlin.adb (Getopt): Add
        parameter Quiet. Need to do not output error messages to
        console. Invalid_Switch exception generation surrounded by an
        error message.

2019-08-12  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch6.adb (Expand_Actuals. Add_Call_By_Copy_Code): Add code
        to generate proper checks when an actual for an in-out or out
        parameter has a non-null access type.  No constraints are
        applied to an inbound access parameter, but on exit a not-null
        check must be performed if the type of the actual requires it.

2019-08-12  Ed Schonberg  <schonberg@adacore.com>

        * sem_util.adb (Is_Expaned_Priority_Attribute): Check whether
        call comes from a rewritten attribute before comparing name with
        Get_Ceiling run-time subprogram.

2019-08-12  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_util.ads (Component_May_Be_Bit_Aligned): Small comment
        tweaks.
        (Possible_Bit_Aligned_Component): Likewise.
        (Type_May_Have_Bit_Aligned_Components): Likewise.
        * exp_util.adb (Component_May_Be_Bit_Aligned): Likewise.
        (Possible_Bit_Aligned_Component): Likewise.
        (Type_May_Have_Bit_Aligned_Components): Likewise.

2019-08-12  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Expand_N_Op_Eq): Expand the array equality if
        either operand is a possibly unaligned slice.
        * exp_ch6.adb (Expand_Simple_Function_Return): Do not generate a
        copy for a possibly unaligned object if it is represented as a
        scalar.
        * exp_util.adb (Is_Possibly_Unaligned_Slice): Do not always
        return false if the target doesn't have strict alignment.

2019-08-12  Bob Duff  <duff@adacore.com>

        * sem_ch12.adb (Instantiate_Package_Body): Remove suppression of
        checks in instances of internal units.
        * sem_ch6.adb (Analyze_Function_Return): Do not generate a
        constraint check on an extended_return_statement if the subtype
        of the return object in the statement is identical to the return
        subtype of the function.

2019-08-12  Bob Duff  <duff@adacore.com>

        * libgnat/a-cbmutr.adb (Is_Reachable): Declare Idx to be of the
        base subtype.  Clearly it makes no sense to loop "while Idx >=
        0", if Idx is of a nonnegative subtype.

2019-08-12  Bob Duff  <duff@adacore.com>

        * libgnat/a-tifiio.adb (Put_Scaled): Prevent AA from being
        negative, since Field is range 0 .. something.

2019-08-12  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst (gnatmetric, gnatpp,
        gnatstub): Remove documentation for Ada language version
        switches, and note that they are no longer needed.

2019-08-12  Gary Dismukes  <dismukes@adacore.com>

        * sem_ch5.adb (Prepare_Param_Spec_Loop): Set the parents of the
        copied low and high bounds in the case where the loop range is
        given by a discrete_subtype_indication, to prevent hanging (or
        Assert_Failure) in Insert_Actions.

2019-08-12  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch6.adb (heck_Untagged_Equality): Verify that user-defined
        equality has the same profile as the predefined equality before
        applying legality rule in RM 4.5.2 (9.8).

2019-08-12  Bob Duff  <duff@adacore.com>

        * libgnat/a-except.ads: Update obsolete comment, still making
        clear that this is a variant.  Add explicit default for Id
        component of Exception_Occurrence, because that value is used.
        Define Null_Occurrence less redundantly.
        * libgnat/a-einuoc.adb: Minor simplification of code.

2019-08-12  Justin Squirek  <squirek@adacore.com>

        * libgnat/a-dhfina.adb, libgnat/a-dhfina.ads (Is_Simple_Name,
        Is_Root_Directory, Is_Parent_Directory,
        Is_Current_Directory_Name, Is_Relative_Name, Initial_Directory,
        Relative_Name, Compose): Add implementation and documentation.
        * libgnat/a-direct.adb (Containing_Directory): Modify routine to
        use routines from Ada.Directories.Hierarchical_File_Names and
        remove incorrect special case for parent directories.
        (Fetch_Next_Entry): Add check for current directory and parent
        directory and ignore them under certain circumstances.
        (Simple_Nmae): Add check for null result from
        Simple_Name_Internal and raise Name_Error.
        (Simple_Name_Internal): Add explicit check for root directories,
        sanitize trailing directory separators, and modify behavior so
        that current and parent directories are considered valid
        results.
        * Makefile.rtl: Add entry to GNATRTL_NONTASKING_OBJS.

2019-08-12  Eric Botcazou  <ebotcazou@adacore.com>

        * freeze.adb (Freeze_Entity): Give the same error for an
        Object_Size clause on a variable-sized type as for a Size
        clause.

2019-08-12  Gary Dismukes  <dismukes@adacore.com>

        * sem_prag.adb (Analyze_Pragma, Pragma_Suppress_Initialization):
        For private types, set the Suppress_Initialization flag on the
        Full_View of the entity rather than the entity's base type.

2019-08-12  Yannick Moy  <moy@adacore.com>

        * aspects.adb, aspects.ads (Aspect_No_Caching): New aspect.
        * contracts.adb, contracts.ads (Add_Contract_Item): Add handling
        of No_Caching.
        (Analyze_Object_Contract): Add handling of No_Caching.
        * einfo.adb, einfo.ads
        (Get_Pragma): Add handling of No_Caching.
        * doc/gnat_rm/implementation_defined_aspects.rst,
        doc/gnat_rm/implementation_defined_pragmas.rst: Document new
        aspect/pragma.
        * gnat_rm.texi: Regenerate.
        * par-prag.adb (Prag): New pragma Pragma_No_Caching.
        * sem_ch13.adb (Analyze_Aspect_Specifications,
        Check_Aspect_At_Freeze_Point): Add handling of No_Caching.
        * sem_prag.adb (Analyze_Pragma): Deal with pragma No_Caching.
        * sem_prag.ads (Analyze_External_Property_In_Decl_Part): Now
        applies to No_Caching.
        * sem_util.adb, sem_util.ads (Is_Effectively_Volatile): Add
        handling of No_Caching.
        (No_Caching_Enabled): New query function.
        * snames.ads-tmpl: New names for pragma.

2019-08-12  Yannick Moy  <moy@adacore.com>

        * sem_util.adb, sem_util.ads (Traverse_More_Func,
        Traverse_More_Proc): Add formal parameter for Itypes traversal.

2019-08-12  Yannick Moy  <moy@adacore.com>

        * exp_attr.adb, exp_attr.ads (Expand_Size_Attribute): New
        procedure to share part of the attribute expansion with
        GNATprove mode.
        (Expand_N_Attribute_Reference): Extract part of the
        Size/Object_Size expansion in the new procedure
        Expand_Size_Attribute.
        * exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Expand
        Size/Object_Size attributes using the new procedure
        Expand_Size_Attribute.

2019-08-12  Yannick Moy  <moy@adacore.com>

        * exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Only
        expand Enum_Rep attribute when its parameter is a literal.

2019-08-12  Justin Squirek  <squirek@adacore.com>

        * sem_eval.adb (Check_Non_Static_Context): Add a condition to
        determine if a range violation constitues a warning or an error.
        (Out_Of_Range): Add a condition to determine if a range
        violation constitues a warning or an error.

2019-08-12  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Real_Range_Check): Do not rewrite the conversion
        node but its expression instead, after having fetched its
        current value.  Clear the Do_Range_Check flag on entry.  Return
        early for a rewritten float-to-float conversion.  Remove
        redundant local variable.  Suppress all checks when inserting
        the temporary and do not reanalyze the node.

2019-08-12  Eric Botcazou  <ebotcazou@adacore.com>

        * sprint.ads: Minor comment tweak.

2019-08-12  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.adb (Insert_Valid_Check): Do not retrieve the
        Do_Range_Check flag from the Original_Node but from the
        Validated_Object.  Remove useless bypass for floating-point
        types.

2019-08-12  Yannick Moy  <moy@adacore.com>

        * sem_util.adb, sem_util.ads (Traverse_More_Func,
        Traverse_More_Proc): New traversal subprograms.

2019-08-12  Jerome Lambourg  <lambourg@adacore.com>

        * libgnarl/s-taprop__vxworks.adb (Abort_Handler): Only call
        s-tpopsp.Self when actually needed.

2019-08-12  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Discrete_Range_Check): Return if checks are
        suppressed.

2019-08-12  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_res.adb: Add with & use clause for Sem_Mech and
        alphabetize.
        (Resolve_Actuals): Do not apply a scalar range check for the
        source of a conversion whose result is passed by reference to a
        valued procedure.

2019-08-12  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.adb (Insert_Valid_Check): Reset the Do_Range_Check flag
        on the validated object.
        * exp_ch6.adb (Add_Call_By_Copy_Code): Reset the Do_Range_Check
        flag on the actual here, as well as on the Expression if the
        actual is a N_Type_Conversion node.
        (Add_Validation_Call_By_Copy_Code): Generate the incoming range
        check if needed and reset the Do_Range_Check flag on the
        Expression if the actual is a N_Type_Conversion node.
        (Expand_Actuals): Do not reset the Do_Range_Check flag here.
        Generate the incoming range check for In parameters here instead
        of...
        (Expand_Call_Helper): ...here.  Remove redudant condition.
        * sem_res.adb (Resolve_Actuals): Use local variable A_Typ and
        remove obsolete comments.
        (Resolve_Type_Conversion): Do not force the Do_Range_Check flag
        on the operand if range checks are suppressed.

2019-08-12  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.adb (Activate_Range_Check): Remove redundant argument.
        (Generate_Range_Check): Likewise.
        (Apply_Float_Conversion_Check): Reset the Do_Range_Check flag on
        entry and remove redundant condition.

2019-08-02  Alexandre Oliva  <oliva@adacore.com>

        * libgnat/a-exexpr.adb (Begin_Handler_v1, End_Handler_v1): New.
        (Claimed_Cleanup): New.
        (Begin_Handler, End_Handler): Document.
        * gcc-interface/trans.c (gigi): Switch to exception handler
        ABI #1.
        (Exception_Handler_to_gnu_gcc): Save the original cleanup
        returned by begin handler, pass it to end handler, and use
        EH_ELSE_EXPR to pass a propagating exception to end handler.
        (gnat_to_gnu): Leave the exception pointer alone for reraise.
        (add_cleanup): Handle EH_ELSE_EXPR, require it by itself.

2019-07-23  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Check_Aspect_At_End_Of_Declarations,
        Freeze_Entity_Checks): Include Aspect_CPU with other aspects
        whose expresssion may depend on a discriminant, and thus require
        that components of the type be made visible.

2019-07-23  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.adb (Convert_And_Check_Range): Add Suppress parameter
        and pass it in the call to Insert_Actions.  Rename local
        variable.
        (Generate_Range_Check): Minor comment fixes.  Pass Range_Check
        in the first call to Convert_And_Check_Range and All_Checks in
        the second call.
        * exp_ch4.adb (Expand_N_Type_Conversion): Reset the
        Do_Overflow_Check flag in the float-to-float case too if there
        is also a range check.

2019-07-23  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.adb (Activate_Overflow_Check): Remove redundant
        argument.
        * exp_ch4.adb (Discrete_Range_Check): Reset the overflow flag.
        (Expand_N_Type_Conversion): Do not reset it here.

2019-07-23  Eric Botcazou  <ebotcazou@adacore.com>

        * repinfo.adb (List_Component_Layout): Pass Decimal to UI_Write.
        (Write_Val): Likewise.

2019-07-23  Ed Schonberg  <schonberg@adacore.com>

        * aspects.ads: New table Operational_Aspect, used to distinguish
        between aspects that are view-specific, such as those related to
        iterators, and representation aspects that apply to all views of
        a type.
        * aspects.adb (Find_Aspect): If the aspect being sought is
        operational, do not ecamine the full view of a private type to
        retrieve it.
        * sem_ch5.adb (Analyze_Iterator_Specification): Improve error
        message when the intended domain of iteration does not implement
        the required iterator aspects.

2019-07-23  Yannick Moy  <moy@adacore.com>

        * sem_spark.ads (Is_Local_Context): New function.
        * sem_spark.adb (Check_Declaration): Issue errors on violations
        of SPARK RM 3.10(4)
        (Process_Path): Do not issue error on borrow/observe during
        elaboration, as these are caught by the new rule.

2019-07-23  Yannick Moy  <moy@adacore.com>

        * exp_ch7.adb (Create_Finalizer): Force finalizer not to be
        Ghost enabled.
        * exp_dbug.adb (Get_External_Name): Explain special case of
        Ghost finalizer.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * repinfo.adb (List_Entities): Also list compiled-generated
        types present as Etype of objects.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * sinfo.ads: Update the documentation about the
        Do_Division_Check, Do_Overflow_Check and Do_Range_Check flags.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Expand_N_Type_Conversion): Beef up comment.
        (Fixup_Universal_Fixed_Operation): Set the base type instead of
        the type of the enclosing type conversion on the operation.

2019-07-22  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch4.adb (Expand_N_In): Do not suggest the use of attribute
        'Valid as a replacement for a range check on a discrete type
        when the bounds of the range are given by type conversions,
        because in such a case there are distinct types involved and the
        subbested attribute replacement would be misplaced.

2019-07-22  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb (Get_Root_Object, Is_Path_Expression,
        Is_Subpath_Expression): Add parameter Is_Traversal to adapt
        these functions to the case of paths returned from a traversal
        function.
        (Read_Indexes): Handle the case of an if-expression or
        case-expression.
        (Check_Statement): Check Emit_Messages only when issuing an
        error message. This is important as Emit_Messages may store the
        information that an error was detected.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * checks.adb (Apply_Type_Conversion_Checks): Do not set
        Do_Range_Check flag on conversions from fixed-point types
        either.
        * exp_attr.adb: Add use and with clause for Expander.
        (Expand_N_Attribute_Reference) <Fixed_Value, Integer_Value>: Set
        the Conversion_OK flag and do not generate overflow/range checks
        manually.
        * exp_ch4.adb (Expand_N_Qualified_Expression): Remove
        superfluous clearing of Do_Range_Check flag.
        (Discrete_Range_Check): New procedure to generate a range check
        for discrete types.
        (Real_Range_Check): Remove redundant local variable and adjust.
        Remove useless shortcut.  Clear Do_Range_Check flag on all
        paths.
        (Expand_N_Type_Conversion): Remove redundant test on
        Conversion_OK.  Call Discrete_Range_Check to generate range
        checks on discrete types.  Remove obsolete code for
        float-to-integer conversions.  Add code to generate range checks
        for conversions involving fixed-point types.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * sprint.ads: Fix pasto in comment.

2019-07-22  Javier Miranda  <miranda@adacore.com>

        * sem_res.adb (Resolve_Actuals): Replace code that displaces the
        pointer to an allocated object to reference its secondary
        dispatch table by a type conversion (which takes care of
        handling all cases).

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * sprint.adb (Sprint_Node_Actual)
        <N_Decimal_Fixed_Point_Definition>: Swap a couple of spaces.
        (Write_Itype): Minor consistency fixes throughout.  Add support
        for printing ordinary and decimal fixed-point types and
        subtypes.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Expand_Loop_Entry_Attribute): Beef up comment.

2019-07-22  Ed Schonberg  <schonberg@adacore.com>

        * libgnat/s-valboo.ads, libgnat/s-valcha.ads,
        libgnat/s-valdec.ads, libgnat/s-valenu.ads,
        libgnat/s-valint.ads, libgnat/s-vallld.ads,
        libgnat/s-vallli.ads, libgnat/s-valllu.ads,
        libgnat/s-valrea.ads, libgnat/s-valuns.ads,
        libgnat/s-valwch.ads: Change categorization of packages that
        implement attribute 'Value from Pure to Preelaborate, to prevent
        undesirable optimizations when the evaluation of the attribute
        raises Constraint_Error, but subsequent use of the result of
        this evsaluation is removed by a subsequent optimization.

2019-07-22  Ed Schonberg  <schonberg@adacore.com>

        * sem_warn.adb (Check_References): Do not emit s warning on a
        referenced entity with no explicit assignment if the type of the
        entity has Preelaborable_Initialixation, such as
        Exception_Occurrence.

2019-07-22  Javier Miranda  <miranda@adacore.com>

        * exp_ch4.adb (Size_In_Storage_Elements): Improve the expansion
        to handle array indexes that are modular type.
        (Expand_N_Allocator): For 32-bit targets improve the generation
        of the runtime check associated with large arrays supporting
        arrays initialized with a qualified expression.
        * libgnat/s-imenne.adb (Image_Enumeration_8,
        Image_Enumeration_16, Image_Enumeration_32): Define the index of
        Index_Table with range Natural'First .. Names'Length since in
        the worst case all the literals of the enumeration type would be
        single letter literals and the Table built by the frontend would
        have as many components as the length of the names string. As a
        result of this enhancement, the internal tables declared using
        Index_Table have a length closer to the real needs, thus
        avoiding the declaration of large arrays on 32-bit CCG targets.

2019-07-22  Yannick Moy  <moy@adacore.com>

        * sem_ch3.adb (Constrain_Access): Issue a message about ignored
        constraint.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch8.adb (End_Use_Type): Reset the In_Use flag on the
        class-wide type if the type is tagged.
        (Use_One_Type): Add commentary on the handling of the class-wide
        type.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * einfo.ads (Is_For_Access_Subtype): Delete.
        (Set_Is_For_Access_Subtype): Likewise.
        * einfo.adb (Is_For_Access_Subtype): Likewise.
        (Set_Is_For_Access_Subtype): Likewise.
        (Write_Entity_Flags): Do not write Is_For_Access_Subtype.
        * exp_ch4.adb (Expand_N_Selected_Component): Do not deal with
        it.
        * exp_spark.adb (Expand_SPARK_N_Selected_Component): Likewise.
        * sem_ch4.adb (Analyze_Explicit_Dereference): Likewise.
        * sem_ch3.adb (Build_Discriminated_Subtype): Do not build a
        special private subtype for access-to-record subtypes.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch3.adb (Complete_Private_Subtype): Rework the setting of
        the Etype of the full view for full base types that cannot
        contain any discriminant.  Remove code and comment about it in
        the main path.

2019-07-22  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch3.adb (Convert_Bound): Subsidiary of
        Floating_Point_Type_Declaration, to handle properly range
        specifications with bounds that may include static constants of
        a given type rather than real literals.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_aggr.adb (Rewrite_Bound): Be prepared for discriminals
        too.
        (Rewrite_Range;): Minor tweak.
        (Resolve_Record_Aggregate): For a component with default
        initialization whose expression is an array aggregate, also
        rewrite the bounds of the component associations, if any.

2019-07-22  Gary Dismukes  <dismukes@adacore.com>

        * exp_ch5.adb (Expand_N_Case_Statement): In the case where a
        case statement is rewritten as an equivalent if statement,
        inherit the From_Condition_Expression flag from the case
        statement.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch8.adb (Check_Constrained_Object): Further extend the
        special optimization to all limited types.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Expand_N_Attribute_Reference)
        <Attribute_Enum_Val>: Set No_Truncation on the
        N_Unchecked_Type_Conversion built around the argument passed to
        the attribute.

2019-07-22  Nicolas Roche  <roche@adacore.com>

        * libgnat/s-valrea.adb (Scan_Real): Ignore non significative
        digits to avoid converging to infinity in some cases.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * libgnat/g-encstr.adb (Encode_Wide_String): Fix oversight.
        (Encode_Wide_Wide_String): Likewise.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_warn.adb (Find_Var): Bail out for a function call with an
        Out or In/Out parameter.

2019-07-22  Nicolas Roche  <roche@adacore.com>

        * terminals.c (__gnat_tty_waitpid): Support both blocking and
        not blocking mode.
        * libgnat/g-exptty.ads (Is_Process_Running): New function.
        * libgnat/g-exptty.adb (Close): Don't try to interrupt/terminate
        a process if it is already dead.

2019-07-22  Ed Schonberg  <schonberg@adacore.com>

        * freeze.adb (Freeze_Fixed_Point_Type): When freezing a
        fixed-point subtype, check whether the parent type declarastion
        includes an aspect specification for the 'Small type attribute,
        and inherit the specified value.

2019-07-22  Javier Miranda  <miranda@adacore.com>

        * freeze.adb (Freeze_Subprogram): Check that C++ constructors
        must have external or link name.

2019-07-22  Ed Schonberg  <schonberg@adacore.com>

        * sem_res.adb (Resolve_Selected_Component): If the prefix has a
        deferred reference, generate the correct reference now, to
        indicate that the previous assignment is used.  This prevents
        spurious warnings on useless assignments when compiling with all
        warnings enabled. when there is a subsequent call in the same
        stqtement list, in which the prefix of the selected component is
        the actual for an out parameter.

2019-07-22  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_attr.adb (Expand_Loop_Entry_Attribute): Copy the condition
        of a while loop instead of simply relocating it.

2019-07-18  Arnaud Charlet  <charlet@adacore.com>

        * Makefile.rtl, expect.c, env.c, aux-io.c, mkdir.c, initialize.c,
        cstreams.c, raise.c, tracebak.c, adadecode.c, init.c, raise-gcc.c,
        argv.c, adaint.c, adaint.h, ctrl_c.c, sysdep.c, rtinit.c, cio.c,
        seh_init.c, exit.c, targext.c: Introduce a "STANDALONE" mode where C
        runtime files do not have any dependency on GCC include files.
        Remove unnecessary includes.
        Remove remaining references to VMS in runtime C file.
        * runtime.h: new File.

2019-07-13  Andreas Schwab  <schwab@linux-m68k.org>

        * Makefile.rtl: Use g-sercom__linux.adb for all linuxes.

2019-07-11  Piotr Trojanek  <trojanek@adacore.com>

        * lib-writ.adb (Ensure_System_Dependency,
        Up_To_Date_ALI_File_Exists, Write_ALI): Replace low-level access
        to table with a high-level query.

2019-07-11  Piotr Trojanek  <trojanek@adacore.com>

        * checks.adb: Fix typo in comment.
        * sem.adb (Semantics): Avoid repeated calls to
        In_Extended_Main_Source_Unit by reusing an already-cached
        result.
        * sem_util.adb (First_Global): Fix style.

2019-07-11  Yannick Moy  <moy@adacore.com>

        * sem_res.adb (Resolve_Call): Do not perform dimensionality
        checking on inlined bodies.

2019-07-11  Yannick Moy  <moy@adacore.com>

        * debug.adb: Flip meaning of debug switch -gnatdF.

2019-07-11  Yannick Moy  <moy@adacore.com>

        * sem_eval.adb (Is_Same_Value): Add special case for rewritten
        Loop_Entry attribute.

2019-07-11  Claire Dross  <dross@adacore.com>

        * gnat1drv.adb: SPARK checking rules for pointer aliasing are
        moved to GNATprove backend.
        * sem_spark.ads, sem_spark.adb (Sem_SPARK): Is now a generic
        unit. Takes as parameters:
         - Retysp which is used to query the most underlying type
           visible in SPARK. We do not introduce aliasing checks for
           types which are not visibly deep.
         - Component_Is_Visible_In_SPARK is used to avoid doing pointer
           aliasing checks on components which are not visible in SPARK.
         - Emit_Messages returns True in the second phase of SPARK
           analysis. Error messages for failed aliasing checks are only
           output in this case.
        Additionally, errors on constructs not supported in SPARK are
        removed as duplicates of marking errors. Components are stored
        in the permission map using their original component to avoid
        inconsistencies between components of different views of the
        same type.
        (Check_Expression): Handle delta constraints.
        (Is_Deep): Exported so that we can check for SPARK restrictions
        on deep types inside SPARK semantic checkings.
        (Is_Traversal_Function): Exported so that we can check for SPARK
        restrictions on traversal functions inside SPARK semantic
        checkings.
        (Check_Call_Statement, Read_Indexes): Check wether we are
        dealing with a subprogram pointer type before querying called
        entity.
        (Is_Subpath_Expression): Image attribute can appear inside a
        path.
        (Check_Loop_Statement): Correct order of statements in the loop.
        (Check_Node): Ignore raise nodes.
        (Check_Statement): Use Last_Non_Pragma to get the object
        declaration in an extended return statement.

2019-07-11  Patrick Bernardi  <bernardi@adacore.com>

        * bindgen.adb (Gen_Main): Do not generate a reference to
        Ada_Main_Program_Name when the Minimal_Binder flag is set.
        (Gen_Output_File_Ada): Do not output GNAT_Version and
        Ada_Main_Program_Name info if Minimal_Binder flag is set.
        * bindusg.adb: Add documentation for new -minimal switch.
        * gnatbind.adb (Scan_Bind_Arg): Scan -minimal switch.
        * opt.ads: Add new global flag Minimal_Binder to indicate if the
        binder should not produce global variables.
        * doc/gnat_ugn/building_executable_programs_with_gnat.rst:
        Update documentation with new binder -minimal switch.
        * gnat_ugn.texi: Regenerate.

2019-07-11  Eric Botcazou  <ebotcazou@adacore.com>

        * Makefile.rtl: Add warning note about compilation flags and
        capitalize.

2019-07-11  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch9.adb (Expand_N_Protected_Type_Declaaration): New
        subsidiary routine Replace_Access_Definition, to handle properly
        a protected type PT one of whose private components is of type
        access PT.

2019-07-11  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/g-socket.ads (Level_Type): Add enumerators for
        IP_Protocol_For_ICMP, IP_Protocol_For_IGMP,
        IP_Protocol_For_RAW_Level.
        * libgnat/g-socket.adb (Levels): Handle them.
        * s-oscons-tmplt.c: Import socket protocols defined in
        netinet/in.h.

2019-07-11  Claire Dross  <dross@adacore.com>

        * libgnat/a-cfhama.adb, libgnat/a-cfhase.adb (Free): Do not
        reset the Has_Element flag if no element is freed.

2019-07-11  Arnaud Charlet  <charlet@adacore.com>

        * errno.c: Remove obsolete support for MaRTE OS.

2019-07-11  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch4.adb (Expand_N_Type_Conversion): If a predicate check
        is generated, analyze it with range check suppressed, because
        that check has been previously applied.
        * exp_ch5.adb (Expand_N_Assignment_Statement): If the RHS is a
        type conversion to the type of the LHS, do not apply a predicate
        check to the RHS because it will have been generated already
        during its expansion.
        * exp_ch6.adb (Can_Fold_Predicate_Call): Extend processing to
        handle a predicate check on a constant entity whose value is
        static.

2019-07-11  Hristian Kirtchev  <kirtchev@adacore.com>

        * bindo.adb: Remove the documentation of switch -d_N because it
        is no longer in use.
        * bindo-graphs.ads, bindo-graphs.adb (Is_Spec_Before_Body_Edge):
        New routine.
        * bindo-writers.adb (Write_Dependency_Edge): Add the missing
        case of a spec-before-body edge.

2019-07-11  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/g-socket.ads (Mode_Type): Add a Socket_Raw enumerator.
        * libgnat/g-socket.adb (Modes): Handle Socket_Raw.

2019-07-11  Justin Squirek  <squirek@adacore.com>

        * exp_ch9.adb (Build_Private_Protected_Declaration): Add
        exception for the moving of pragmas to internally generated
        specs for pragma Unreferenced.

2019-07-11  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Fix inconsistent
        documentation for gnatmetric.
        * gnat_ugn.texi: Regenerate.

2019-07-11  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Document gnatpp's
        --spaces-only switch.

2019-07-11  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_util.adb (Null_Status): Assume that an erroneous construct
        has an undefined null status.

2019-07-11  Hristian Kirtchev  <kirtchev@adacore.com>

        * checks.adb, exp_ch6.adb, gnat1drv.adb, sem_aux.adb,
        sem_ch2.adb, sem_ch8.adb, sem_res.adb: Minor reformatting.

2019-07-11  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_ch8.adb (Analyze_Object_Renaming): Obtain the object being
        renamed using routine Get_Object_Name which takes care of
        various name forms.
        (Get_Object_Name): New routine.

2019-07-11  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch6.adb (Can_Fold_Predicate_Call): New function,
        subsidiary of Expand_Call_Helper, to compute statically a
        predicate check when the argument is a static integer.

2019-07-11  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_res.adb (Resolve_Op_Not): Do not rewrite an equality
        operator into a function call when the operator is intrinsic.

2019-07-11  Thomas Quinot  <quinot@adacore.com>

        * sem_prag.adb (Analyze_Pragma, case pragma Check): Do not call
        Set_SCO_Pragma_Enabled for the dynamic predicate case.

2019-07-11  Hristian Kirtchev  <kirtchev@adacore.com>

        * exp_util.ads, exp_util.adb (Needs_Finalization): Move to
        Sem_Util.
        * sem_ch9.adb (Analyze_Protected_Definition): Code cleanup. Mark
        the protected type as having controlled components when it
        contains at least one such component.
        * sem_util.ads, sem_util.adb (Needs_Finalization): New
        function.

2019-07-11  Eric Botcazou  <ebotcazou@adacore.com>

        * alloc.ads (Rep_JSON_Table_Initial): New constant.
        (Rep_JSON_Table_Increment): Likewise.
        * debug.adb: Document -gnatd_j switch.
        * gcc-interface/Make-lang.in (GNAT_ADA_OBJS): Add
        repinfo-input.o.
        * gnat1drv.adb: Add with clause for Repinfo.Input.
        Add with and use clauses for Sinput.
        (Read_JSON_Files_For_Repinfo): New procedure.
        (Gnat1drv1): Deal with -gnatd_j switch.
        * repinfo-input.ad[sb]: New unit.
        * snames.ads-tmpl (Name_Discriminant): New constant.
        (Name_Operands): Likewise.

2019-07-11  Justin Squirek  <squirek@adacore.com>

        * checks.adb (Apply_Accessibility_Check): Add check for constant
        folded conditions on accessibility checks.

2019-07-11  Arnaud Charlet  <charlet@adacore.com>

        * libgnarl/g-thread.ads, libgnarl/g-thread.adb (Get_Thread):
        Update comments. Add new version taking a Task_Id.

2019-07-11  Hristian Kirtchev  <kirtchev@adacore.com>

        * bindo.adb: Update the section of switches and debugging
        elaboration issues.
        * bindo.ads: Add type Elaboration_Phase.
        * bindo-augmentors.adb: Add use clause for
        Bindo.Writers.Phase_Writers.
        (Augment_Library_Graph): Signal the start and end of the
        aubmentation phase.
        * bindo-builders.adb: Add with and use clause for Bindo.Writers.
        Add use clause for Bindo.Writers.Phase_Writers.
        (Build_Invocation_Graph): Signal the start and end of the
        invocation graph construction phase.
        (Build_Library_Graph): Signal the start and end of the library
        graph construction phase.
        * bindo-diagnostics.adb: Add use clause for
        Bindo.Writers.Phase_Writers.
        (Diagnose_Cycle): Signal the start and end of the cycle
        diagnostic phase.
        * bindo-elaborators.adb: Add use clause for
        Bindo.Writers.Phase_Writers.
        (Elaborate_Units): Signal the start and end of the unit
        elaboration phase.
        * bindo-graphs.adb: Add use clause for
        Bindo.Writers.Phase_Writers.
        (Find_Components): Signal the start and end of the component
        discovery phase.
        (Find_Cycles): Signal the start and end of the cycle discovery
        phase.
        * bindo-units.adb: Add with and use clause for Bindo.Writers.
        Add use clause for Bindo.Writers.Phase_Writers.
        (Collect_Elaborable_Units): Signal the start and end of the unit
        collection phase.
        * bindo-validators.adb: Add with and use clause for
        Bindo.Writers.  Add use clause for Bindo.Writers.Phase_Writers.
        (Validate_Cycles, Validate_Elaboration_Order,
        Validate_Invocation_Graph, Validate_Library_Graph): Signal the
        start and end of the libray graph validation phase.
        * bindo-writers.ads, bindo-writers.adb: Add new nested package
        Phase_Writers.
        * debug.adb: Update the documentation of switch d_S.

2019-07-11  Yannick Moy  <moy@adacore.com>

        * sem_res.adb (Check_Argument_Order): Special case calls to
        operators.

2019-07-10  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/s-ststop.adb: Remove System.Strings.Stream_Ops
        dependence on System.Streams.Stream_IO.

2019-07-10  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch2.adb (Analyze_Integer_Literal): Preserve the type of
        the literal if prior analysis determined that its type is a
        modular integer type.

2019-07-10  Doug Rupp  <rupp@adacore.com>

        * init.c: Do not attempt to re-arm guard page on x86_64-vx7(r2).

2019-07-10  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch8.adb (Check_Constrained_Object): A record that is
        limited because of the presence of a limited component is
        constrained, and no subtype indiciation needs to be created for
        it, just as is the case for declared limited records.

2019-07-10  Yannick Moy  <moy@adacore.com>

        * sem_aux.adb, sem_aux.ads (Is_Protected_Operation): New
        function to determine if a subprogram is protected.
        * sem_spark.adb (Setup_Protected_Components): New procedure to
        add protected components to the environment.
        (Check_Callable_Body): Call the new Setup_Protected_Components.
        (Check_Package_Spec): Merge local environment with enclosing one
        when done.

2019-07-10  Claire Dross  <dross@adacore.com>

        * sem_spark.adb (Check_Expression): Allow digits constraints as
        input.
        (Illegal_Global_Usage): Pass in the entity.
        (Is_Subpath_Expression): New function to allow different nodes
        as inner parts of a path expression.
        (Read_Indexes): Allow concatenation and aggregates with box
        expressions.  Allow attributes Update and Loop_Entry.
        (Check_Expression): Allow richer membership test.
        (Check_Node): Ignore bodies of generics.
        (Get_Root_Object): Allow concatenation and attributes.

2019-07-10  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_ch6.adb (Check_Discriminant_Conformance): Use Find_Type to
        discover the type of a full view discriminant.

2019-07-10  Arnaud Charlet  <charlet@adacore.com>

        * doc/gnat_ugn/gnat_and_program_execution.rst: Improve gnatmem's
        doc for the depth switch.

2019-07-10  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Document gnatpp's
        --source-line-breaks switch.

2019-07-10  Justin Squirek  <squirek@adacore.com>

        * doc/gnat_rm/implementation_defined_attributes.rst: Add mention
        of 'Image attribute with 'Img's entry to mention additional
        added 2012 usage of Obj'Image.
        * doc/gnat_rm/implementation_defined_pragmas.rst: Correct
        mispelling of Async_Writers.
        * gnat_rm.texi: Regenerate.
        * sem_prag.adb (Analyze_Pragma): Correct mispelling of
        Async_Writers.
        * sem_util.adb (State_Has_Enabled_Property): Correct mispelling
        of Async_Writers.

2019-07-10  Simon Buist  <buist@adacore.com>

        * sem_util.ads (Child_Prefix): New constant.
        * sem_util.adb (Unique_Name): Add a special prefix to child
        units that have a nested subprogram or package.

2019-07-10  Arnaud Charlet  <charlet@adacore.com>

        * sfn_scan.adb (Scan_SFN_Pragmas): Add pragma Assert.

2019-07-10  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_ch3.adb (Check_Nonoverridable_Aspects): Correct the
        spelling in certain error messages.
        (Check_Pragma_Implemented): Correct the spelling in certain
        error messages.

2019-07-10  Eric Botcazou  <ebotcazou@adacore.com>

        * Makefile.rtl (GNATRTL_NONTASKING_OBJS): Add g-brapre.
        * libgnat/g-brapre.ads: New package specification.
        * doc/gnat_rm/the_gnat_library.rst: Document it.
        * gnat_rm.texi: Regenerate.

2019-07-10  Yannick Moy  <moy@adacore.com>

        * osint-c.adb (Set_File_Name): Always add extension for multiple
        units per file mode.

2019-07-10  Corentin Gay  <gay@adacore.com>

        * sysdep.c: Put include directive for 'vxWorks.h' before any
        other VxWorks headers.

2019-07-10  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/gnat_rm/implementation_defined_attributes.rst
        (Scalar_Storage_Order): Minor tweaks.  Add note about debuggers.
        * gnat_rm.texi: Regenerate.

2019-07-10  Hristian Kirtchev  <kirtchev@adacore.com>

        * exp_ch4.adb (Expand_N_Case_Expression): Mark the generated
        assignments to the temporary result as being OK because the
        expansion of case expressions is correct by construction.
        (Is_Copy_Type): Update the predicate to match the comment
        within.

2019-07-10  Hristian Kirtchev  <kirtchev@adacore.com>

        * bindo-graphs.adb, bindo.adb, debug.adb, exp_ch6.adb,
        sem_ch10.adb, sem_ch13.adb, sem_ch3.adb, sem_ch4.adb,
        sem_ch6.adb, sem_ch7.adb, sem_res.adb, sem_spark.adb,
        sem_util.adb, warnsw.ads: Minor reformatting.

2019-07-10  Joffrey Huguet  <huguet@adacore.com>

        * libgnat/a-strbou.ads, libgnat/a-strfix.ads,
        libgnat/a-strunb.ads, libgnat/a-strunb__shared.ads: Add global
        contracts, contract cases, preconditions and postconditions to
        procedures and functions.

2019-07-10  Doug Rupp  <rupp@adacore.com>

        * sysdep.c (__gnat_is_file_not_found_error): Reformulate to also
        work for vxworks7r2 SR0610.

2019-07-10  Doug Rupp  <rupp@adacore.com>

        * env.c (__gnat_environ): Reformulate to also work for
        vxworks7r2 SR0610.

2019-07-10  Patrick Bernardi  <bernardi@adacore.com>

        * Makefile.rtl: Handle vxworks7r2 ppc target

2019-07-10  Hristian Kirtchev  <kirtchev@adacore.com>

        * bindo.adb: Update the section on switches.
        * bindo-graphs.adb
        (Add_Cycle, Add_Vertex_And_Complement): Remove.
        (Create): The graph no longer needs a set of recorded cycles
        because the cycles are not rediscovered in permuted forms.
        (Cycle_End_Vertices): New routine.
        (Destroy): The graph no longer needs a set of recorded cycles
        because the cycles are not rediscovered in permuted forms.
        (Destroy_Library_Graph_Vertex): Move to the library level.
        (Find_All_Cycles_Through_Vertex, Find_All_Cycles_With_Edge):
        Remove.
        (Find_Cycles_From_Successor, Find_Cycles_From_Vertex,
        Find_Cycles_In_Component, Has_Elaborate_All_Edge): New routines.
        (Insert_And_Sort): Remove.
        (Is_Elaborate_Body_Edge): Use predicate
        Is_Vertex_With_Elaborate_Body.
        (Is_Recorded_Cycle): Remove.
        (Is_Vertex_With_Elaborate_Body): New routine.
        (Normalize_And_Add_Cycle): Remove.
        (Precedence): Rename to xxx_Precedence, where xxx relates to the
        input.  These versions better reflect the desired input
        precedence.
        (Record_Cycle): New routine.
        (Remove_Vertex_And_Complement, Set_Is_Recorded_Cycle): Remove.
        (Trace_xxx): Update all versions to use debug switch -d_t.
        (Trace_Component): New routine.
        (Trace_Eol): Removed.
        (Trace_Vertex): Do not output the component as this information
        is already available when the component is traced.
        (Unvisit, Visit): New routine.
        * bindo-graphs.ads: Add new instance LGV_Lists.  Remove instance
        RC_Sets.  Update the structure of type Library_Graph_Attributes
        to remove the set of recorded cycles.
        (Destroy_Library_Graph_Vertex): Move to the library level.
        * bindo-writers.adb (Write_Component_Vertices): Output
        information about the number of vertices.
        * debug.adb: Document the use of binder switch -d_t.  Update the
        use of binder switch -d_T.

2019-07-10  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb (Get_Root_Object): Replace precondition by error
        message.
        (Read_Indexes): Replace precondition by error message.
        (Check_Callable_Body): Check only traversal function returns an
        anonymous access type.
        (Check_Expression): Issue error on unexpected expression as
        path.
        * sem_util.adb (First_Global): Fix access to global on
        entry/task.

2019-07-10  Javier Miranda  <miranda@adacore.com>

        * exp_ch6.adb (Is_Class_Wide_Interface_Type): New subprogram.
        (Expand_Call_Helper): Handle non-limited views when we check if
        any formal is a class-wide interface type.
        * exp_disp.adb (Expand_Interface_Actuals): Handle non-limited
        views when we look for interface type formals to force "this"
        displacement.

2019-07-10  Ed Schonberg  <schonberg@adacore.com>

        * sem_res.adb (Resolve_Equality_Op): Do not replace the resolved
        operator by its alias if expander is not active, because the
        operand type may not be frozen yet and its inherited operations
        have not yet been created.

2019-07-10  Hristian Kirtchev  <kirtchev@adacore.com>

        * bindo-elaborators.adb (Elaborate_Units): Set attribute
        Elab_Position of all elaborated units.
        (Set_Unit_Elaboration_Positions): New routine.

2019-07-10  Gary Dismukes  <dismukes@adacore.com>

        * exp_util.adb: Reformatting and a typo fix.

2019-07-10  Yannick Moy  <moy@adacore.com>

        * exp_util.adb (Remove_Side_Effects): Prefer renamings for
        objects of possible owning type in GNATprove mode.

2019-07-09  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch3.adb (Analyze_Object_Declaration): If the object type
        is a composite type that has a dynamic predicate and, the
        expression in the declaration is an aggregate, the generated
        predicate check must appear after the expanded code for the
        aggregate, which will appear after the rewritten object
        declarastion.

2019-07-09  Justin Squirek  <squirek@adacore.com>

        * sem_eval.adb (Expr_Value_E): Add conditional to correctly
        handle constant enumerated character types.

2019-07-09  Eric Botcazou  <ebotcazou@adacore.com>

        * libgnarl/s-osinte__mingw.ads (CRITICAL_SECTION): Use proper
        type for SpinCount component.

2019-07-09  Justin Squirek  <squirek@adacore.com>

        * exp_ch4.adb (Expand_N_Allocator): Add conditional to detect
        the presence of anoymous access type allocators and issue a
        warning if the appropriate warning flag is enabled.
        * warnsw.ads: Add new warning flag for anonymous allocators
        * warnsw.adb (All_Warnings, Restore_Warnings, Save_Warnings,
        Set_Underscore_Warning_Switch): Register new flags.
        (WA_Warnings): Register new flag as an "all warnings" switch
        * usage.adb,
        doc/gnat_ugn/building_executable_programs_with_gnat.rst:
        Document new warning switches -gnatw_a and -gnatw_A.
        * gnat_ugn.texi: Regenerate.

2019-07-09  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch4.adb (Diagnose_Call): Improve error recovery when a
        local subprogram name hides a possible candidate name declared
        in a child package in the context of the current unit.
        * sem_ch6.adb (Process_Formals): Protect against malformed
        formal types when the parameter type does not denote an entity.

2019-07-09  Hristian Kirtchev  <kirtchev@adacore.com>

        * bindo-augmentors.adb (Visit_Elaboration_Root): Do not start a
        DFS from an elaboration root whose corresponding unit lacks
        elaboration code. This behavior mimics that of the old
        elaboration order mechanism.
        * bindo-graphs.adb (Find_All_Cycles_Through_Vertex): Move the
        vertex tracing within the functional branches of the routine.
        This prevents spurious trace output.
        (Has_No_Elaboration_Code): New routine.
        (Trace_Cycle, Trace_Edge): Update the various Ids to use the
        "standard" trace format.
        * bindo-graphs.ads (Has_No_Elaboration_Code): New routine.
        * bindo-units.ads, bindo-units.adb (Has_No_Elaboration_Code):
        New routine.

2019-07-09  Piotr Trojanek  <trojanek@adacore.com>

        * ali.ads, bindo-graphs.adb, bindo-validators.adb, clean.adb,
        doc/gnat_ugn/elaboration_order_handling_in_gnat.rst, einfo.ads,
        exp_aggr.adb, exp_ch13.adb, exp_ch4.adb, exp_ch5.adb,
        exp_ch6.adb, exp_ch7.adb, exp_ch9.adb, exp_pakd.adb,
        fname-uf.ads, gnatlink.adb, inline.adb, lib.ads, make.adb,
        namet.ads, opt.ads, par-ch4.adb, par-ch6.adb, par-labl.adb,
        prep.adb, sem_aggr.adb, sem_ch13.adb, sem_ch4.adb, sem_ch5.adb,
        sem_ch6.adb, sem_ch6.ads, sem_ch7.adb, sem_ch8.adb, sem_dim.adb,
        sem_disp.adb, sem_prag.adb, sem_res.adb, sem_warn.adb,
        sinfo.ads: Replace ".  " with ". ". Minor reformatting and typo
        corrections.
        * gnat_ugn.texi: Generate.

2019-07-09  Hristian Kirtchev  <kirtchev@adacore.com>

        * bindo.ads: Move type Precedence_Kind from the private to the
        visible part of the unit.
        * bindo-augmentors.adb: Remove the use of global data as it is
        bad practice.
        (Augment_Library_Graph): Update the parameter profile.
        (Is_Visited, Set_Is_Visited): Remove.
        (Visit_Elaboration_Root, Visit_Elaboration_Roots): Update the
        parameter profile and comment on usage.
        (Visit_Vertex): Likewise.  Also keep track of which invocation
        edge activates a task.
        * bindo-augmentors.ads (Augment_Library_Graph): Update the
        parameter profile and comment on usage.
        * bindo-builders.adb (Create_Forced_Edge,
        Create_Spec_And_Body_Edge, Create_With_Edge): Update the call to
        Add_Edge.
        * bindo-diagnostics.adb: Add with end use clauses for Restrict
        and Rident.
        (Output_Dynamic_Model_Suggestions): Remove.
        (Output_Invocation_Related_Suggestions): New routine.
        (Output_Suggestions): Output all invocation-related suggestions
        together.
        * bindo-elaborators.adb: Remove types Comparator_Ptr and
        Predicate_Ptr.
        (Find_Best_Vertex): Update the parameter profile.
        * bindo-graphs.adb (Activates_Task): New routine.
        (Add_Body_Before_Spec_Edge): Update the call to
        Add_Edge_With_Return.
        (Add_Edge): Update the parameter profile and the call to
        Add_Edge_With_Return.
        (Add_Edge_With_Return): Update the parameter profile and comment
        on usage.
        (At_Least_One_Edge_Satisfies): New routine.
        (Contains_Elaborate_All_Edge): Reimplement.
        (Contains_Static_Successor_Edge, Contains_Task_Activation): New
        routine.
        (Contains_Weak_Static_Successor): Remove.
        (Is_Static_Successor_Edge): New routine.
        * bindo-graphs.ads: Add types LGE_Predicate_Ptr,
        LGV_Comparator_Ptr, and LGV_Predicate_Ptr.  Update type
        Library_Graph_Edge_Attributes to capture whether an invocation
        edge activates a task.  Update the value of
        No_Library_Graph_Edge_Attributes.
        (Activates_Task): Update the parameter profile and comment on
        usage.
        (Contains_Static_Successor_Edge, Contains_Task_Activation): New
        routines.
        (Contains_Weak_Static_Successor): Remove.
        * doc/gnat_ugn/elaboration_order_handling_in_gnat.rst:
        Update the documentation to reflect the new task-related advice.
        * gnat_ugn.texi: Regenerate.

2019-07-09  Piotr Trojanek  <trojanek@adacore.com>

        * exp_util.adb (Containing_Package_With_Ext_Axioms): Replace
        low-level Ekind test with a high-level wrapper.

2019-07-09  Arnaud Charlet  <charlet@adacore.com>

        * libgnat/s-memory.adb: Disable calls to Abort defer/undefer
        when ZCX_By_Default.

2019-07-09  Javier Miranda  <miranda@adacore.com>

        * sem_ch13.adb (Rep_Item_Too_Early): Representation clauses are
        not allowed for a derivation of a generic type. Extend the
        current test to check that none of the parents is a generic
        type.

2019-07-09  Hristian Kirtchev  <kirtchev@adacore.com>

        * exp_ch9.adb, exp_util.adb, repinfo.adb, sem_ch12.adb,
        sem_prag.adb, sem_res.adb, sem_spark.adb, sem_util.adb: Minor
        reformatting.

2019-07-09  Ed Schonberg  <schonberg@adacore.com>

        * sem_res.adb (Resolve_Equality_Op): If the node was overloaded,
        set properly the entity to which the node has been resolved. The
        original entity is the first one found during analysis, and is
        not necessarily the resolved one.
        (Resolve_Op_Not): If the argument of negation is an overloaded
        equality operation, call its resolution directly given that the
        context type does not participate in overload resolution.

2019-07-09  Hristian Kirtchev  <kirtchev@adacore.com>

        * bindo.adb: Remove with and use clauses for Debug.  Add with
        and use clauses for Opt.
        (Find_Elaboration_Order): Enable the v4.0 elaboration order. The
        v3.0 mechanism is now available under binder switch -H.
        * bindusg.adb (Display): Enable switch -H.
        * debug.adb: Free compiler switch -gnatd_G.  Free binder switch
        -d_N.
        * sem_elab.adb: Update the section on switches to remove
        -gnatd_G.
        (Invocation_Graph_Recording_OK): The invocation graph is now
        unconditionally recorded in ALI files.
        * switch-b.adb (Scan_Binder_Switches): Scan switch -H.
        * doc/gnat_ugn/building_executable_programs_with_gnat.rst:
        Update the documentation on compiler switches related to
        elaboration.  Update the documentation on binder switches to
        include switch -H.
        * doc/gnat_ugn/elaboration_order_handling_in_gnat.rst: Update
        the documentation on elaboration order handling in GNAT.
        * gnat_ugn.texi: Regenerate.

2019-07-09  Eric Botcazou  <ebotcazou@adacore.com>

        * repinfo.adb (List_Entities): Disregard formals altogether.
        (List_Name): Properly escape the double quote in the JSON
        output.

2019-07-09  Javier Miranda  <miranda@adacore.com>

        * exp_util.adb (Remove_Side_Effects): Preserve the
        Do_Range_Check flag.

2019-07-09  Yannick Moy  <moy@adacore.com>

        * sinfo.ads: Refine comment for Do_Range_Check.

2019-07-09  Yannick Moy  <moy@adacore.com>

        * exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Expand
        attribute reference on Enum_Rep.

2019-07-09  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch12.adb (Instantiate_Formal_Package): Handle properly the
        case where the actual for a formal package in an instance is the
        current instance of an enclosing generic package.
        (Check_Formal_Packages): If the formal package declaration is
        box-initialized or lacks associations altogether, no internal
        instance was created to verify conformance, and there is no
        validating package to remove from tree.

2019-07-09  Yannick Moy  <moy@adacore.com>

        * freeze.adb (Build_Renamed_Body): Do not set body to inline in
        GNATprove mode.

2019-07-09  Yannick Moy  <moy@adacore.com>

        * exp_util.adb (Expand_Subtype_From_Expr): Still expand the type
        of static expressions in GNATprove_Mode.
        * sem_ch3.adb (Analyze_Object_Declaration): Remove obsolete
        special case for GNATprove_Mode.

2019-07-09  Piotr Trojanek  <trojanek@adacore.com>

        * doc/gnat_rm/the_gnat_library.rst,
        doc/gnat_ugn/building_executable_programs_with_gnat.rst,
        erroutc.adb, libgnat/g-comlin.adb, libgnat/g-comlin.ads,
        libgnat/g-regexp.ads, libgnat/g-regpat.ads,
        libgnat/g-spipat.ads, libgnat/s-os_lib.ads,
        libgnat/s-regexp.ads: Reword "wild card" to "wildcard".
        * gnat_rm.texi, gnat_ugn.texi: Regenerate.

2019-07-09  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb (Check_Expression): Handle correctly implicit
        assignments as part of allocators and (extension) aggregates.
        (Get_Root_Object): Adapt for new path expressions.
        (Is_Path_Expression): Return True for (extension) aggregate.

2019-07-09  Piotr Trojanek  <trojanek@adacore.com>

        * einfo.ads: Fix a typo.

2019-07-09  Ed Schonberg  <schonberg@adacore.com>

        * sem_util.adb (Scope_Within_Or_Same): Handle properly task
        bodies and protected bodies, so that local variables within have
        their proper scopes after these constructs have been rewritten
        during expansion. This patch resembles but is not identical to
        the code in Scope_Within.

2019-07-09  Arnaud Charlet  <charlet@adacore.com>

        * gnat1drv.adb (Adjust_Global_Switches): Set
        Dynamic_Elaboration_Checks to True in CodePeer mode.

2019-07-09  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb (Get_Perm_Or_Tree): Issue an error when
        encountering unknown global variable.

2019-07-09  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb (Check_Expression): Change signature to take an
        Extended_Checking_Mode, for handling read permission checking of
        sub-expressions in an assignment.
        (Check_Parameter_Or_Global): Adapt to new behavior of
        Check_Expression for mode Assign.
        (Check_Safe_Pointers): Do not analyze generic bodies.
        (Check_Assignment): Separate checking of the target of an
        assignment.

2019-07-09  Eric Botcazou  <ebotcazou@adacore.com>

        * repinfo.ads (JSON format): Adjust.
        * repinfo.adb (Need_Blank_Line): Rename to...
        (Need_Separator): ...this.
        (Blank_Line): Rename to...
        (Write_Separator): ...this and add JSON specific handling.
        (List_Array_Info): Adjust to above renaming.
        (List_Object_Info): Likewise.
        (List_Record_Info): Likewise.
        (List_Subprogram_Info): Likewise.
        (List_Type_Info): Likewise.
        (List_Entities): Do not set Need_Blank_Line.
        (List_Rep_Info): Set Need_Separator and add JSON specific
        handling. Output a single JSON stream in the  normal case.

2019-07-09  Arnaud Charlet  <charlet@adacore.com>

        * doc/gnat_ugn/the_gnat_compilation_model.rst: Update doc on
        -fdump-ada-spec now that we generate Ada 2012.
        * gnat_ugn.texi: Regenerate.

2019-07-08  Eric Botcazou  <ebotcazou@adacore.com>

        * repinfo.adb (List_Common_Type_Info): New procedure extracted
        from...
        (List_Type_Info): ...here.  Call it for the common information,
        start with a blank line and output the linker section at the
        end, if any.
        (List_Mechanisms): Rename to...
        (List_Subprogram_Info): ...this.
        (List_Array_Info): Call List_Common_Type_Info.
        (List_Entities): Adjust to above change and renaming.
        (List_Record_Info): Call List_Common_Type_Info.

2019-07-08  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/g-sercom.ads
        (Serial_Port_Descriptor): New type.
        (Serial_Port): Add a comment, make it hold a
        Serial_Port_Descriptor.
        (To_Ada, To_C): New procedures.
        (Port_Data, Port_Data_Access): Remove types.
        * libgnat/g-sercom.adb (To_Ada): New stub.
        * libgnat/g-sercom__linux.adb, libgnat/g-sercom__mingw.adb:
        Update implementations accordingly.
        * s-oscons-tmplt.c: Bind Serial_Port_Descriptor to
        System.Win32.HANDLE on Windows, and to Interfaces.C.int on
        Linux. Add "Interfaces.C." prefix for other basic integer type
        bindings.
        * xoscons.adb (Output_Info): Remove the "Interfaces.C." prefix
        for subtypes generation.

2019-07-08  Arnaud Charlet  <charlet@adacore.com>

        * doc/gnat_rm/standard_and_implementation_defined_restrictions.rst:
        Update documentation on No_Exceptions restriction.
        * gnat_rm.texi: Regenerate.

2019-07-08  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/s-os_lib.adb: Do not call __gnat_kill for Invalid_Pid.

2019-07-08  Piotr Trojanek  <trojanek@adacore.com>

        * sem_util.adb (Enclosing_Package_Or_Subprogram): Do not expect
        package and subprogram bodies.

2019-07-08  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Remove documentation
        of ignored GNATpp switch.

2019-07-08  Hristian Kirtchev  <kirtchev@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst:
        Update the documentation of pragma Initialize_Scalars.
        * gnat_rm.texi: Regenerate.

2019-07-08  Javier Miranda  <miranda@adacore.com>

        * exp_ch4.adb (Tagged_Membership): Fix regression silently
        introduced in r260738 that erroneouslusy causes the evaluation
        to True of the membership test when the left operand of the
        membership test is a class-wide interface object and the right
        operand is a type that implements such interface type.

2019-07-08  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_ch13.adb (Analyze_Attribute_Definition_Clause): Do not
        register an address clause when its prefix denotes a generic
        formal object.

2019-07-08  Hristian Kirtchev  <kirtchev@adacore.com>

        * bindo-diagnostics.adb (Diagnose_Cycle): Capture the presence
        of an Elaborate_All edge before iterating over the edges of the
        cycle.
        (Output_Elaborate_Body_Transition): Update the parameter profile
        and the comment on usage. Add a missing case where the edge is
        within the context of an Elaborate_All.
        (Output_Transition): Update the call to
        Output_Elaborate_Body_Transition.
        * bindo-graphs.ads, bindo-graphs.adb
        (Contains_Elaborate_All_Edge): New routine.

2019-07-08  Piotr Trojanek  <trojanek@adacore.com>

        * lib-xref-spark_specific.adb (Create_Heap): Set dummy Etype for
        the fake __HEAP entity.

2019-07-08  Daniel Mercier  <mercier@adacore.com>

        * gnat1drv.adb: Suppress warnings on memory representation in
        CodePeer compiler mode.

2019-07-08  Nicolas Roche  <roche@adacore.com>

        * rtinit.c (__gnat_runtime_initialize): Remove dependency on
        CommandLineToArgvW.

2019-07-08  Doug Rupp  <rupp@adacore.com>

        * Makefile.rtl: Handle vxworks7r2 in x86_64 and x86 vxworks7.

2019-07-08  Dmitriy Anisimkov  <anisimko@adacore.com>

        * Makefile.rtl: Use g-sercom__linux.adb for all linuxes.

2019-07-08  Yannick Moy  <moy@adacore.com>

        * expander.adb (Expand): Do not reset Analyzed flag always.
        * sem_eval.adb (Fold_Ureal): Mark node as analyzed.

2019-07-08  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch9.adb (Expand_N_Timed_Entry_Call): Do not insert twice
        the assignment statement that computes the delay value, to
        prevent improper tree sharing when the value is a type
        conversion and Float_Overflow checks are enabled.

2019-07-08  Hristian Kirtchev  <kirtchev@adacore.com>

        * bindo.adb: Update the section on terminology to include new
        concepts.  Update the section on switches to include new
        entries.
        * bindo.ads: Add type Precedence_Kind.
        * bindo-builders.adb: Add with and use clauses for Debug and
        Bindo.Validators.  Add use clauses for
        Bindo.Validators.Invocation_Graph_Validators and
        Bindo.Validators.Library_Graph_Validators.
        (Build_Invocation_Graph): Validate the graph immediately after
        it was built.
        (Build_Library_Graph): Update the parameter profile. The
        creation of the graph is now elaboration model-agnostic.
        Validate the graph immediately after it was built.
        (Create_With_Edge): Create regular with edges for Elaborate and
        Elaborate_All edges when the appropriate debug switches are in
        effect.
        * bindo-builders.ads (Build_Library_Graph): Update the parameter
        profile.
        * bindo-diagnostics.adb (Diagnose_Cycle): Track the presence of
        an Elaborate_All edge throughout the inspection of the cycle's
        edges.
        (Output_Dynamic_Model_Suggestions): Output the suggestion only
        when the cycle contains at least one weak edge where the
        successor was statically elaborated.
        (Output_Elaborate_Body_Transition, Output_Forced_Transition,
        Output_With_Transition): Update the assertions.
        * bindo-elaborators.adb: Remove use clauses for
        Bindo.Validators.Invocation_Graph_Validators and
        Bindo.Validators.Library_Graph_Validators.  Remove strings
        Add_To_All_Candidates_Msg and Add_To_Comp_Candidates_Msg.
        Remove type String_Ptr.
        (Add_Vertex, Add_Vertex_If_Elaborable, Create_All_Candidates_Set
        Create_Component_Candidates_Set): Remove.
        (Create_Component_Vertex_Sets, Create_Vertex_Sets): New routine.
        (Elaborate_Component): Update the parameter profile and the
        comment on usage.  Reimplement the elaboration of a component.
        The algorithm will now attempt to elaborate as many vertices
        possible. If this is not possible, and a weakly elaborable
        vertex is available use unit was compiled using the dynamic
        model, the algorithm will elaborate it.
        (Elaborate_Library_Graph): Reimplement the elaboration of the
        graph. The algorithm will now attempt to elaborate as many
        vertices along with their components as possible. If this is not
        possible, and a weakly elaborable vertex is available use unit
        was compiled using the dynamic model, the algorithm will
        elaborate it along with its component.
        (Elaborate_Units): Merge with the functionality of
        Elaborate_Units_Common.
        (Elaborate_Units_Common, Elaborate_Units_Dynamic,
        Elaborate_Units_Static): Remove.
        (Elaborate_Vertex): Update the parameter profile and the comment
        on usage.  Reimplemented.
        (Find_Best_Candidate): Remove.
        (Find_Best_Elaborable_Vertex, Find_Best_Vertex,
        Find_Best_Weakly_Elaborable_Vertex, Has_Elaborable_Body,
        Insert_Elaborable_Successor, Insert_Vertex): New routines.
        (Is_Better_Candidate): Remove.
        (Is_Better_Elaborable_Vertex,
        Is_Better_Weakly_Elaborable_Vertex,
        Is_Suitable_Elaborable_Vertex,
        Is_Suitable_Weakly_Elaborable_Vertex): New routines.
        (Trace_Candidate_Vertices): Remove.
        (Trace_Component): Output the number of strong and weak
        predecessors.
        (Trace_Unelaborated_Vertices): Remove.
        (Trace_Vertex): Output the number of strong and weak
        predecessors.
        (Trace_Vertices): New routine.
        (Update_Successor, Update_Successors): Update the parameter
        profile and the comment on usage.
        * bindo-graphs.adb: Remove type Precedence_Kind.
        (Add_Edge_With_Return): Update the increment of pending
        predecessors.
        (Add_Vertex): Provide default values for strong and weak
        predecessors.
        (Complementary_Vertex): Move the initial declaration to the
        spec. Update the parameter profile and the comment on usage.
        (Contains_Weak_Static_Successor): New routine.
        (Create): Update the parameter profile. The creation of the
        graph is now elaboration model-agnostic.
        (Decrement_Pending_Predecessors): Update the parameter profile
        and the comment on usage. Reimplemented.
        (Delete_Edge): Update the decrement of pending predecesors.
        (Has_Elaborate_Body): Do not treat a vertex as being subject to
        Elaborate_Body when a debug switch is in effect.
        (Increment_Pending_Predecessors): Update the parameter profile
        and the comment on usage. Reimplemented.
        (Is_Elaborable_Component): Reimplemented.
        (Is_Elaborable_Vertex): Move the initial declaration to the
        spec.  Reimplemented.
        (Is_Elaborate_Body_Pair): New routine.
        (Is_Dynamically_Elaborated): Update the parameter profile.
        Reimplemented.
        (Is_Weakly_Elaborable_Vertex): New routine.
        (Pending_Predecessors): Removed.
        (Pending_Predecessors_For_Elaboration,
        Pending_Strong_Predecessors, Pending_Weak_Predecessors,
        Update_Pending_Predecessors): New routines.
        (Update_Pending_Predecessors_Of_Components): Update the
        increment of pending predecessors.
        * bindo-graphs.ads: Update the components of type
        Component_Attributes.  Update the components of type
        Library_Graph_Attributes.  Update the components of type
        Library_Graph_Vertex_Attributes.  Update the initialization of
        No_Component_Attributes.  Update the initialization of
        No_Library_Graph_Vertex_Attributes.
        (Complementary_Vertex, Contains_Weak_Static_Successor): New
        routines.
        (Create): Update the parameter profile and the comment on usage.
        (Decrement_Pending_Predecessors, Is_Dynamically_Elaborated):
        Update the parameter profile and the comment on usage.
        (Is_Elaborate_Body_Pair, Is_Weakly_Elaborable_Vertex): New
        routines.
        (Pending_Predecessors): Removed.
        (Pending_Predecessors_For_Elaboration,
        Pending_Strong_Predecessors, Pending_Weak_Predecessors): New
        routines.
        * bindo-writers.adb (Write_Components): Moved from the spec.
        (Write_Component): Output the strong and weak predecessors.
        (Write_Library_Graph): Output the components as part of the
        graph.
        (Write_Library_Graph_Vertex): Output the strong and weak
        predecessors.
        * bindo-writers.ads (Write_Components): Moved to the body.
        * debug.adb: Add and document new GNATbind switches -d_a, -d_b,
        -d_e.
        * bindo-validators.adb: Minor reformattings.

2019-07-08  Bob Duff  <duff@adacore.com>

        * libgnat/g-sercom.ads, libgnat/g-sercom__linux.adb (Data_Rate):
        Support additional data rates.

2019-07-08  Olivier Hainque  <hainque@adacore.com>

        * gcc-interface/trans.c (Compilation_Unit_to_gnu): Don't request
        DECL_ARTIFICIAL_P on elab proc declarations.

2019-07-08  Eric Botcazou  <ebotcazou@adacore.com>

        * repinfo.adb (List_Record_Info): Declare Incomplete_Layout and
        Not_In_Extended_Main local exceptions.
        (List_Structural_Record_Layout): For an extension, raise the
        former if the parent subtype has not been built and the latter
        if it is not declared in the main source unit.  Fall back to the
        flat layout if either exception has been raised.

2019-07-08  Ed Schonberg  <schonberg@adacore.com>

        * libgnat/a-strfix.adb (Delete): The RM describes the semantics
        of Delete as equivalent to that of Replace_String with a null
        argument. As a result, deleting a null string that starts past
        the end of its argument is a noop and must not raise
        Index_Error.

2019-07-08  Javier Miranda  <miranda@adacore.com>

        * exp_disp.adb (Register_Primitive): When registering a
        primitive in the secondary dispatch table, handle primitive
        inherited through several levels of type derivation (required to
        properly handle inherited 'null' primitive).

2019-07-08  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Document handling of
        preprocessor directives in GNATpp.

2019-07-08  Javier Miranda  <miranda@adacore.com>

        * gnat1drv.adb (Post_Compilation_Validation_Checks:
        Validate_Compile_Time_Warning_Errors is now located in sem_prag
        (instead of sem_ch13).
        * sem_ch13.ads (Validate_Compile_Time_Warning_Error,
        Validate_Compile_Time_Warning_Errors): Move to sem_prag.
        * sem_ch13.adb
        (Compile_Time_Warnings_Errors): Move to sem_prag.
        (Initialize): Remove initialization of table
        Compile_Time_Warning_Errors.
        (Validate_Compile_Time_Warning_Error,
        Validate_Compile_Time_Warning_Errors): Move to sem_prag.
        * sem_prag.ads (Validate_Compile_Time_Warning_Errors): New
        procedure.
        * sem_prag.adb (Initialize): Initialize table
        Compile_Time_Warning_Errors.

2019-07-08  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Analyze_Aspect_Specifications): For a
        pre/postcondition of a generic subprogram declaration, do not
        use Relocate_Node on the aspect expression to construct the
        corresponding attribute specification, to prevent tree anomalies
        when the expression is a call with named actual parameters.

2019-07-08  Javier Miranda  <miranda@adacore.com>

        * sem_attr.adb (Analyze_Attribute [Attribute_Size]): For pragmas
        used to report user defined compile time warning or errors
        handle 'Size for types with known static RM size.

2019-07-08  Justin Squirek  <squirek@adacore.com>

        * exp_imgv.adb (Build_Enumeration_Image_Tables): Default SSO for
        the building of image tables.
        (Expand_Image_Attribute): Minor cleanup.

2019-07-08  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/g-socket.ads, libgnat/g-socket.adb: Improve
        documentation.
        (Get_Socket_Option, Set_Socket_Option): Remove default value for
        the Level formal.

2019-07-08  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Check_Aspect_At_End_Of_Declarations): For an
        unanalized aspect in a generic context that has not been
        analyzed yet, if the aspect applies to a type, place the type on
        the scope stack to make its components visible, before checking
        conformance with the version of the expression analyzed at the
        freeze point.

2019-07-05  Justin Squirek  <squirek@adacore.com>

        * checks.adb (Apply_Accessibility_Check): Add logic to fetch the
        function result accessibility level if one is required within
        the generated check.
        * exp_ch6.adb (Needs_Result_Accessibility_Level): Modify
        controlling elsif block to handle more cases such as anonymous
        access results and disable checking for coextensions.

2019-07-05  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch9.adb (Analyze_Accept_Statement): If this is an illegal
        accept statement for an enclosing entry abandon analysis to
        prevent scope mismatches and potential infinite loops in
        compiler.

2019-07-05  Hristian Kirtchev  <kirtchev@adacore.com>

        * ali.adb (For_Each_Invocation_Construct,
        For_Each_Invocation_Relation): New version.
        (Scan_ALI): Initialize field Invocation_Graph_Encoding.
        (Set_Invocation_Graph_Encoding): Update the setting of the
        invocation graph encoding.
        * ali.ads: Move field Invocation_Graph_Encoding from Unit_Record
        to ALI_Record because the encoding applies to the whole ALI,
        rather than one of the units (spec or body) for which the ALI
        file was created.
        (For_Each_Invocation_Construct, For_Each_Invocation_Relation):
        New version.
        * bindo.adb: Update the section on switches.  Complete the
        section of debugging elaboration order issues.
        (Find_Elaboration_Order): Prepare the routine for the switch
        from the old to the new elaboration order mechanism.
        * bindo-diagnostics.adb (Find_And_Output_Invocation_Paths):
        Manage a visited set used by Visit_Vertex.
        (Output_All_Cycles_Suggestions,
        Output_Dynamic_Model_Suggestions): Clarify the nature of the
        suggested switch.
        (Output_Elaborate_Body_Transition): Update the diagnostic to
        emit a better message.
        (Output_Forced_Suggestions, Output_Full_Encoding_Suggestions):
        Clarify the nature of the suggested switch.
        (Visit_Vertex): Update the parameter profile to add a set of
        invokers visited during the transition. This set prevents
        infinite exploration of the graph in case the invocations are
        recursive.
        * bindo-elaborators.adb: Add a use clause for
        Bindo.Writers.Dependency_Writers.
        (Elaborate_Units_Common): Output the library graph after it has
        been augmented with invocation edges. Output just the components
        instead of outputting the whole library graph again.
        (Elaborate_Units_Dynamic, Elaborate_Units_Static): Output the
        dependencies as expressed in the library graph.
        * bindo-units.adb (Invocation_Graph_Encoding): Update the
        extraction of the invocation graph encoding.
        * bindo-writers.adb: Add with and use clauses for Binderr and
        Butil.
        (palgc, plgc): New debug routine.
        (Write_Components): Moved to the spec. Add a header for the
        output.
        (Write_Dependencies, Write_Dependencies_Of_Vertex,
        Write_Dependency_Edge): New routine.
        (Write_Elaboration_Order): Update the logic to follow the format
        of Binde's order output.
        (Write_Library_Graph): Do not output the components every time
        the graph is written.
        (Write_Unit): Output the invocation graph encoding of the unit.
        Output the invocation constructs and relations for the unit
        only.
        * bindo-writers.ads (Write_Components): Moved from the body.
        (Write_Dependencies): New routine.
        * bindusg.adb: Prepare the routine for the switch from the old
        to the new elaboration order mechanism.
        * debug.adb: Binder switch -d_O is now not associated with any
        functionality.
        * einfo.adb (Is_Elaboration_Target): The attribute applies to
        packages, as specified by the comment on the attribute usage.
        * opt.ads: Add a global flag which controls the choice between
        the new and the legacy elaboration order mechanism.
        * sem_elab.adb: Add Package_Target to type Target_Kind.
        (Build_Elaborate_Body_Procedure, Build_Elaborate_Procedure,
        Build_Elaborate_Spec_Procedure, Check_Elaboration_Scenarios,
        Check_SPARK_Model_In_Effect): Use Main_Unit_Entity to obtain the
        entity of the main unit.
        (Create_Package_Rep): New routine.
        (Create_Target_Rep): Add processing for packages.
        (Declaration_Placement_Of_Node, Has_Prior_Elaboration): Use
        Main_Unit_Entity to obtain the entity of the main
         unit.
        (Invocation_Graph_Recording_OK): Prepare the routine for the
        switch from the old to the new elaboration order mechanism.
        (Main_Unit_Entity): New routine.
        (Meet_Elaboration_Requirement,
        Process_Conditional_ABE_Variable_Reference): Use
        Main_Unit_Entity to obtain the entity of the main unit.
        (Process_Invocation_Instantiation): New routine.
        (Process_Invocation_Scenario): Add processing for
        instantiations.
        * switch-b.adb (Scan_Binder_Switches): Prepare the routine for
        the switch from the old to the new elaboration order mechanism.

2019-07-05  Joffrey Huguet  <huguet@adacore.com>

        * libgnat/a-textio.adb: Add abstract state refinment.
        * libgnat/a-textio.ads: Add File_System abstract state.  Add
        global contracts, contract cases, preconditions and
        postconditions to procedures and functions.
        (Set_Input, Set_Output, Set_Error, Standard_Input,
        Standard_Output, Standard_Error, Current_Input, Current_Output,
        Current_Error): Turn SPARK_Mode off.
        (Get_Line): Turn SPARK_Mode off on Get_Line functions.
        * libgnat/a-tideio.ads, libgnat/a-tienio.ads,
        libgnat/a-tifiio.ads, libgnat/a-tiflio.ads,
        libgnat/a-tiinio.ads, libgnat/a-timoio.ads: Add global
        contracts, contract cases, preconditions and postconditions to
        procedures and functions.

2019-07-05  Arnaud Charlet  <charlet@adacore.com>

        * doc/gnat_ugn/platform_specific_information.rst: Refresh doc on
        installing from the command line on Windows.  Remove obsolete
        part.
        * gnat_ugn.texi: Regenerate.

2019-07-05  Vasiliy Fofanov  <fofanov@adacore.com>

        * libgnat/a-wichha.ads (Is_Alphanumeric): Replace comment with
        the correct one.  Also capitalize references to False
        throughout.

2019-07-05  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch4.adb (Expand_N_Indexed_Component): Do not expand actual
        parameters of function calls here either.

2019-07-05  Hristian Kirtchev  <kirtchev@adacore.com>

        * bindo-units.adb, checks.adb, exp_attr.adb, exp_ch3.adb,
        exp_ch4.adb, exp_pakd.adb, lib-writ.adb, libgnat/g-traceb.adb,
        libgnat/g-traceb.ads, libgnat/s-stratt.ads, sem_aux.ads,
        sem_util.adb: Minor reformatting.

2019-07-05  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Build_Predicate_Functions): If a subtype that
        carries a static predicate aspect is frozen immediately after
        its declaration, ensure that the generated function body created
        for predicate checking is inserted after the corresponding
        subprogram declaration, which is created at the point the
        declaration is elaborated.

2019-07-05  Hristian Kirtchev  <kirtchev@adacore.com>

        * exp_ch7.adb (Cleanup_Record): Use the underlying type when
        checking for components with tasks.

2019-07-05  Arnaud Charlet  <charlet@adacore.com>

        * libgnarl/s-osinte__linux.ads: Link with -lrt before -lpthread.

2019-07-05  Ed Schonberg  <schonberg@adacore.com>

        * exp_pakd.adb (Expand_Bit_Packed_Element_Set): Add explicit
        range checks when the index type of the bit-packed array is an
        enumeration type with a non-standard representation,

2019-07-05  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_res.adb (Is_Control_Flow_Statement): Delay statements
        contain an expression, which in turn may have side effects and
        affect the infinite recursion. As a result, delay statements
        should not be treated specially.

2019-07-05  Arnaud Charlet  <charlet@adacore.com>

        * libgnarl/s-linux.ads, libgnarl/s-linux__alpha.ads,
        libgnarl/s-linux__android.ads, libgnarl/s-linux__hppa.ads,
        libgnarl/s-linux__mips.ads, libgnarl/s-linux__riscv.ads,
        libgnarl/s-linux__sparc.ads: Fix typos in comments.

2019-07-05  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_res.adb (Check_Infinite_Recursion): Reimplemented.
        (Enclosing_Declaration_Or_Statement,
        Invoked_With_Different_Arguments, Is_Conditional_Statement,
        Is_Control_Flow_Statement, Is_Immediately_Within_Body,
        Is_Raise_Idiom, Is_Raise_Statement, Is_Sole_Statement,
        Preceded_By_Control_Flow_Statement,
        Within_Conditional_Statement): New routines.

2019-07-05  Javier Miranda  <miranda@adacore.com>

        * exp_ch4.adb (Expand_N_Type_Conversion): Do not apply an
        accessibility check when the conversion is an access to
        class-wide interface type and it is an actual parameter.
        * exp_ch6.adb (Expand_Call_Helper): Add documentation on the
        accessibility level of an anonymous allocator defining the value
        of an access parameter.
        * sem_util.ads, sem_util.adb (Dynamic_Accessibility_Level): Add
        support for an anonymous allocator whose type is that of a
        stand-alone object of an anonymous access to object type.

2019-07-05  Piotr Trojanek  <trojanek@adacore.com>

        * einfo.ads, sem_res.adb: Typo fixes in comments.

2019-07-05  Bob Duff  <duff@adacore.com>

        * exp_ch6.adb (Is_Build_In_Place_Function): Narrow the check for
        Has_Foreign_Convention to the imported case only.  If a
        build-in-place function is exported, and called from Ada code,
        build-in-place protocols should be used.

2019-07-05  Ed Schonberg  <schonberg@adacore.com>

        * sem_util.adb (Encloing_Subprogram): If Enclosing_Dynamic_Scope
        is a loop, continue climbing the scope stack to find the
        enclosing subprogram.
        (Gather_Components): Handle properly a choice in a record
        aggregate that is given by a subtype with a static predicate.

2019-07-05  Javier Miranda  <miranda@adacore.com>

        * debug.adb (-gnatd.K): Leave available this switch.
        * contracts.adb (Build_And_Analyze_Contract_Only_Subprograms):
        Remove.
        * scil_ll.ads, scil_ll.adb (Contract_Only_Body_Flag,
        Contract_Only_Body_Nodes, Get_Contract_Only_Body,
        Is_Contract_Only_Body, Set_Contract_Only_Body): Remove.

2019-07-05  Pierre-Marie de Rodat  <derodat@adacore.com>

        * libgnat/a-strunb.ads: Import documentation from the RM

2019-07-05  Pierre-Marie de Rodat  <derodat@adacore.com>

        * libgnat/a-strfix.ads: Import documentation from the RM

2019-07-05  Yannick Moy  <moy@adacore.com>

        * adabkend.adb (Scan_Back_End_Switches): Accept -Og and -Ofast
        switches.

2019-07-05  Hristian Kirtchev  <kirtchev@adacore.com>

        * ali.adb: Relocate types Invocation_Construct_Record,
        Invocation_Relation_Record, and Invocation_Signature_Record to
        the body of ALI.  Relocate tables Invocation_Constructs,
        Invocation_Relations, and Invocation_Signatures to the body of
        ALI.  Remove type Body_Placement_Codes.  Add new types
        Declaration_Placement_Codes, and
        Invocation_Graph_Encoding_Codes.  Update the literals of type
        Invocation_Graph_Line_Codes.
        (Add_Invocation_Construct): Update the parameter profile. Add an
        invocation construct built from all attributes provided.
        (Add_Invocation_Relation): Update the parameter profile. Add an
        invocation relation built from all attributes provided.
        (Body_Placement): New routine.
        (Body_Placement_Kind_To_Code, Code_To_Body_Placement_Kind):
        Removed.
        (Code_To_Declaration_Placement_Kind,
        Code_To_Invocation_Graph_Encoding_Kind, Column,
        Declaration_Placement_Kind_To_Code, Extra,
        For_Each_Invocation_Construct, For_Each_Invocation_Relation,
        Invocation_Graph_Encoding,
        Invocation_Graph_Encoding_Kind_To_Code, Invoker, Kind, Line,
        Locations, Name): New routine.
        (Scan_Invocation_Construct_Line): Reimplement the scanning
        mechanism.
        (Scan_Invocation_Graph_Attributes_Line): New routine.
        (Scan_Invocation_Graph_Line): Use a case statement to dispatch.
        (Scan_Invocation_Relation_Line): Reimplement the scanning
        mechanism.
        (Scope): New routine.
        (Set_Invocation_Graph_Encoding, Signature, Spec_Placement,
        Target): New routine.
        * ali.ads: Add new type Invocation_Graph_Encoding_Kind.  Add
        component Invocation_Graph_Encoding to type Unit_Record.
        Relocate various types and data structures to the body of ALI.
        (Add_Invocation_Construct, Add_Invocation_Relation): Update the
        parameter profile.
        (Body_Placement): New routine.
        (Body_Placement_Kind_To_Code, Code_To_Body_Placement_Kind):
        Removed.
        (Code_To_Declaration_Placement_Kind,
        Code_To_Invocation_Graph_Encoding_Kind, Column,
        Declaration_Placement_Kind_To_Code, Extra,
        For_Each_Invocation_Construct, For_Each_Invocation_Relation,
        Invocation_Graph_Encoding,
        Invocation_Graph_Encoding_Kind_To_Code, Invoker, Kind, Line,
        Locations, Name, Scope, Set_Invocation_Graph_Encoding,
        Signature, Spec_Placement, Target): New routine.
        * bindo.adb: Add with clause for Binde.  Add with and use
        clauses for Debug.  Update the documentation.  Add new switches.
        (Find_Elaboration_Order): Dispatch to the proper elaboration
        mechanism.
        * bindo-augmentors.adb:
        Remove with and use clauses for GNAT and GNAT.Sets.  Remove
        membership set VS.  Update the parameter profiles of most
        routines to use better parameter names.  Update the
        implementation of most routine to use the new parameter names.
        Remove various redundant assertions.
        * bindo-builders.adb: Use better names for instantiated data
        structures. Update all references to these names.  Update the
        parameter profiles of most routines to use better parameter
        names.  Update the implementation of most routine to use the new
        parameter names.
        (Build_Library_Graph): Update the parameter profile. Update the
        call to Create.
        (Create_Vertex): Reimplemented.
        (Declaration_Placement_Vertex): New routine.
        * bindo-builders.ads (Build_Library_Graph): Update the parameter
        profile and comment on usage.
        * bindo-diagnostics.adb: Almost a new unit.
        * bindo-diagnostics.ads: Add a use clause for
        Bindo.Graphs.Invocation_Graphs.  Remove package
        Cycle_Diagnostics.
        (Diagnose_Circularities): New routine.
        * bindo-elaborators.adb: Remove the with and use clauses for
        Binderr and GNAT.Sets.  Remove the use clause for
        Bindo.Diagnostics.Cycle_Diagnostics.  Remove membership set VS.
        Update the parameter profiles of most routines to use better
        parameter names.  Update the implementation of most routine to
        use the new parameter names.  (Elaborate_Units_Common): Update
        the parameter profile. Pass an infication to the library graph
        builder whether the dynamic model is in effect.
        (Elaborate_Units_Dynamic, Elaborate_Units_Static): Use
        Diagnose_Circularities to provide diagnostics.
        (Update_Successor): Use routine In_Same_Component to determine
        whether the predecessor and successor reside in different
        components.
        * bindo-graphs.adb: Add with and use clauses for Butil, Debug,
        Output, and Bindo.Writers.  Remove with and use clauses for
        GNAT.Lists.  Update the parameter profiles of most routines to
        use better parameter names.  Update the implementation of most
        routine to use the new parameter names.  Remove various
        redundant assertions.  Remove doubly linked list EL.  Add new
        type Precedence_Kind.
        (Add_Cycle): New routine.
        (Add_Vertex): Update the parameter profile. Update the creation
        of vertex attributes.
        (Add_Vertex_And_Complement, Body_Vertex, Column,
        Complementary_Vertex, Copy_Cycle_Path, Cycle_Kind_Of): New
        routines.
        (Destroy_Invocation_Graph_Edge, Destroy_Library_Graph_Cycle,
        Destroy_Library_Graph_Edge, Extra, File_Name,
        Find_All_Cycles_Through_Vertex, Find_All_Cycles_With_Edge,
        Find_Cycles, Find_First_Lower_Precedence_Cycle,
        Get_LGC_Attributes, Has_Next, Hash_Library_Graph_Cycle,
        Hash_Library_Graph_Cycle_Attributes, Highest_Precedence_Cycle,
        Highest_Precedence_Edge, In_Same_Component, Insert_And_Sort,
        Invocation_Edge_Count, Invocation_Graph_Encoding,
        Is_Cycle_Initiating_Edge, Is_Cyclic_Edge,
        Is_Cyclic_Elaborate_All_Edge, Is_Cyclic_Elaborate_Body_Edge,
        Is_Cyclic_Elaborate_Edge, Is_Cyclic_Forced_Edge,
        Is_Cyclic_Invocation_Edge, Is_Cyclic_With_Edge,
        Is_Dynamically_Elaborated, Is_Elaborate_All_Edge,
        Is_Elaborate_Body_Edge, Is_Elaborate_Edge: New routines.
        (Is_Existing_Predecessor_Successor_Relation): Removed.
        (Is_Forced_Edge, Is_Invocation_Edge, Is_Recorded_Cycle,
        Is_Recorded_Edge, Is_With_Edge, Iterate_Edges_Of_Cycle, Kind,
        Length): New routine.
        (Lib_Vertex): Removed.
        (Line, Links_Vertices_In_Same_Component,
        Maximum_Invocation_Edge_Count, Next, Normalize_And_Add_Cycle,
        Normalize_Cycle_Path, Number_Of_Cycles, Path, Precedence,
        Remove_Vertex_And_Complement, Sequence_Next_Cycle): New routines.
        (Sequence_Next_IGE_Id): Renamed to Sequence_Next_Edge.
        (Sequence_Next_IGV_Id): Renamed to Sequence_Next_Vertex.
        (Sequence_Next_LGE_Id): Renamed to Sequence_Next_Edge.
        (Sequence_Next_LGV_Id): Renamed to Sequence_Next_Vertex.
        (Set_Is_Existing_Predecessor_Successor_Relation): Removed.
        (Set_Is_Recorded_Cycle, Set_Is_Recorded_Edge,
        Set_LGC_Attributes, Spec_Vertex, Trace_Cycle, Trace_Edge,
        Trace_Eol, Trace_Vertex): New routines.
        * bindo-graphs.ads: Add with and use clauses for Types and
        GNAT.Lists.  Update the parameter profiles of most routines to
        use better parameter names.  Update the implementation of most
        routine to use the new parameter names.  Add the new
        instantiated data structures IGE_Lists, IGV_Sets, LGC_Lists,
        LGE_Lists, LGE_Sets, LGV_Sets, and RC_Sets.  Add new type
        Library_Graph_Cycle_Id along with an empty and initial value.
        Remove component Lib_Vertex and add new components Body_Vertex
        and Spec_Vertex to type Invocation_Graph_Vertex_Attributes.  Add
        new type Library_Graph_Cycle_Kind.  Add new iterators
        All_Cycle_Iterator and Edges_Of_Cycle_Iterator.  Add new type
        Library_Graph_Cycle_Attributes.  Add new components
        Cycle_Attributes, Cycles, and Dynamically_Elaborated to type
        Library_Graph_Attributes.
        (Body_Vertex, Column, Destroy_Invocation_Graph_Edge,
        Destroy_Library_Graph_Cycle_Attributes,
        Destroy_Library_Graph_Edge, Extra, File_Name, Find_Cycles,
        Has_Elaborate_All_Cycle, Has_Next, Hash_Library_Graph_Cycle,
        Hash_Library_Graph_Cycle_Attributes, Highest_Precedence_Cycle,
        In_Same_Component, Invocation_Edge_Count,
        Invocation_Graph_Encoding, Is_Dynamically_Elaborated,
        Is_Elaborate_All_Edge, Is_Elaborate_Body_Edge,
        Is_Elaborate_Edge, Is_Forced_Edge, Is_Invocation_Edge,
        Is_With_Edge, Iterate_All_Cycles, Iterate_Edges_Of_Cycle, Kind):
        New routines.
        (Length, Lib_Vertex, (Line, Next, Number_Of_Cycles, Present,
        Same_Library_Graph_Cycle_Attributes, Spec_Vertex): New routines.
        * bindo-units.adb (File_Name, Invocation_Graph_Encoding): New
        routines.
        * bindo-units.ads: Add new instantiated data structure
        Unit_Sets.
        (File_Name, Invocation_Graph_Encoding): New routine.
        * bindo-validators.adb: Remove with and use clauses for GNAT and
        GNAT.Sets.  Remove membership set US.  Update the parameter
        profiles of most routines to use better parameter names.  Update
        the implementation of most routine to use the new parameter
        names.
        (Validate_Cycle, Validate_Cycle_Path, Validate_Cycles,
        Validate_Invocation_Graph_Vertex): Remove the validation of
        component Lib_Vertex. Add the validation of components
        Body_Vertex and Spec_Vertex.
        (Write_Error): New routine.
        * bindo-validators.ads (Validate_Cycles): New routine.
        * bindo-writers.adb: Update the parameter profiles of most
        routines to use better parameter names.  Update the
        implementation of most routine to use the new parameter names.
        (Write_Cycle, Write_Cyclic_Edge, Write_Cycles): New routines.
        (Write_Invocation_Graph_Vertex): Remove the output of component
        Lib_Vertex. Add the output of components Body_Vertex and
        Spec_Vertex.
        * bindo-writers.ads (Write_Cycles): New routine.
        * debug.adb: Use binder switches -d_C and -d_P, add
        documentation on their usage.
        * gnatbind.adb: Remove with and use clauses for Binde.  Delegate
        the choice of elaboration mechanism to Bindo.
        * lib-writ.adb (Column, Extra, Invoker, Kind, Line, Locations,
        Name, Placement, Scope, Signature, Target): Removed.
        (Write_Invocation_Graph): Moved at the top level.
        (Write_Invocation_Graph_Attributes): New routine.
        (Write_Invocation_Relation, Write_Invocation_Signature): Moved
        at the top level.
        * lib-writ.ads: Add a documentation section on invocation graph
        attributes.
        * sem_elab.adb (Body_Placement_Of): New routine.
        (Declare_Invocation_Construct): Update the call to
        Add_Invocation_Construct.
        (Declaration_Placement_Of_Node): New routine.
        (Get_Invocation_Attributes): Correct the retrieval of the
        enclosing subprogram where the postcondition procedure lives.
        (Placement_Of, Placement_Of_Node): Removed.
        (Record_Invocation_Graph): Record the encoding format used.
        (Record_Invocation_Graph_Encoding): New routine.
        (Record_Invocation_Relation): Update the call to
        Add_Invocation_Relation.
        (Spec_Placement_Of): Removed.
        * libgnat/g-lists.ads, libgnat/g-lists.adb (Equal): New routine.

2019-07-05  Ed Schonberg  <schonberg@adacore.com>

        * checks.adb (Apply_Predicate_Check): Except within the
        subprogram body that defines the formal, do not apply predicate
        check on a formal IN parameter: such a check is redundant and
        its expansion can lead to out-of-scope references when it is
        originates in a function call in a precondition,

2019-07-05  Yannick Moy  <moy@adacore.com>

        * sem_res.adb (Resolve_Call): Cannot inline in quantified
        expressions.
        * sem_util.adb, sem_util.ads (In_Quantified_Expression): New
        function.

2019-07-05  Bob Duff  <duff@adacore.com>

        * doc/gnat_rm/standard_and_implementation_defined_restrictions.rst:
        Fix typo.
        * gnat_rm.texi: Regenerate.

2019-07-05  Bob Duff  <duff@adacore.com>

        * exp_attr.adb (Input): Take the No_Stream_Optimizations
        restriction into account.

2019-07-05  Claire Dross  <dross@adacore.com>

        * libgnat/a-cofove.ads, libgnat/a-cofove.adb: Definite formal
        vectors are now always bounded so that they do not need to be
        limited anymore.

2019-07-05  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/g-traceb.ads, libgnat/g-traceb.adb (Call_Chain): New
        function.

2019-07-04  James Clarke  <jrtc27@debian.org>

        * libgnarl/s-osinte__kfreebsd-gnu.ads (clockid_t): Make type
        definition public.
        (CLOCK_REALTIME): Make value public.

2019-07-04  Javier Miranda  <miranda@adacore.com>

        * exp_tss.adb (Init_Proc): Adding missing support for access to
        subprograms and access to protected subprograms of non-default
        C++ constructors.

2019-07-04  Eric Botcazou  <ebotcazou@adacore.com>

        * gnat1drv.adb (Adjust_Global_Switches): Use proper interface to
        set the validity settings in CodePeer mode.
        * par-load.adb (Load): Remove all code dealing with validity
        settings.
        * validsw.ads (Validity_Check_Copies): Alphabetize.
        * validsw.adb (Reset_Validity_Check_Options): Set all options to
        off.
        (Save_Validity_Check_Options): Save all options.

2019-07-04  Hristian Kirtchev  <kirtchev@adacore.com>

        * exp_ch3.adb, exp_ch4.adb, exp_ch4.ads, exp_ch5.adb,
        exp_ch7.adb, exp_ch9.adb, exp_ch11.adb, exp_unst.adb,
        rtsfind.ads, sem_attr.adb, sem_ch10.adb, sem_ch12.adb,
        sem_ch13.adb, sem_dim.adb, sem_disp.adb, xref_lib.adb: Minor
        reformatting.

2019-07-04  Joffrey Huguet  <huguet@adacore.com>

        * libgnarl/a-taside.ads: Add assertion policy to ignore
        preconditions.
        (Abort_Task, Is_Terminated, Is_Callable): Add preconditions.

2019-07-04  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst: Fix
        capitalization and parenthesis glitches.
        * gnat_rm.texi: Regenerate.

2019-07-04  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch10.adb (Remove_Context_Clauses): Handle properly the
        removal of a limited_with_clause which appears in the library
        unit oF the main unit, when some other unit in the context has a
        regular with_clause on the same unit, to prevent spurious
        visibility errors in the subsequent analysis of pending instance
        bodies.

2019-07-04  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_elab.adb: Add new type Elaboration_Phase_Status along with
        a global to keep track of the elaboration phase status.
        Initialize all internal data structures to Nil for services
        Elaborated_Units, Internal_Representation, and Scenario_Storage.
        (Build_Call_Marker): Do not create a call marker when the
        elaboration phase is not active.
        (Build_Variable_Reference_Marker): Do not create a call marker
        when the elaboration phase is not active.
        (Check_Elaboration_Scenarios): Destroy all internal structures
        when the elaboration phase does not have to run. Do not execute
        when the elaboration phase is not active.
        (Elaboration_Phase_Active): New routine.
        (Finalize_All_Data_Structures): New routine.
        (Initialize): Initialize all internal data structures and signal
        that the elaboration phase has started.
        (Initialize_All_Data_Structures): New routine.
        (Initialize_Elaborated_Units): Initialize all internal data
        structures.
        (Initialize_Internal_Representation): Initialize all internal
        data structures.
        (Initialize_Scenario_Storage): Initialize all internal data
        structures.
        (Kill_Elaboration_Scenario): Do not execute when the elaboration
        phase is not active.
        (Set_Elaboration_Phase): New routine.
        (Update_Elaboration_Scenario): Do not execute when the
        elaboration phase is not active.

2019-07-04  Gary Dismukes  <dismukes@adacore.com>

        * sem_ch6.adb (Analyze_Subprogram_Body_Helper): The special
        treatment of calling Mask_Unfrozen_Types must also be done in
        the case of an Ignored_Ghost_Entity, because Expander_Active is
        False in that case.

2019-07-04  Yannick Moy  <moy@adacore.com>

        * sem_prag.adb (Check_Library_Level_Entity): Update for new rule
        on SPARK_Mode.

2019-07-04  Justin Squirek  <squirek@adacore.com>

        * sem_disp.adb (Check_Controlling_Formals): Obtain the full view
        before type comparison.

2019-07-04  Ed Schonberg  <schonberg@adacore.com>

        * exp_ch4.ads, exp_ch4.adb (Build_Eq_Call): New visible
        subprogram, extracted from Expand_Composite_Equality, to handle
        properly the composition of equality for variant record types.
        * exp_ch3.adb (MAke_Eq_If): Use Build_Eq_Call for each
        component, to handle properly the case of a component with a
        user-defined equality. Revert to predefined equality if the
        user-defined operation is abstract, to maintain compatibility
        with older versions,

2019-07-04  Justin Squirek  <squirek@adacore.com>

        * exp_ch3.adb (Build_Initialization_Call): Fixup
        *_skip_null_excluding_check argument to handle new default.
        (Init_Formals): Make *_skip_null_excluding_check formal default
        to False
        * exp_ch4.adb (Expand_N_Allocator): Add comment to note heavy
        code duplication

2019-07-04  Bob Duff  <duff@adacore.com>

        * sem_ch3.adb (Access_Definition): Do not create a master unless
        Tasking_Allowed. Otherwise, this fails on restricted runtimes.

2019-07-04  Hristian Kirtchev  <kirtchev@adacore.com>

        * sem_util.adb (Propagate_DIC_Attributes): Do not propagate the
        Default_Initial_Condition attributes to an incomplete type.

2019-07-04  Ed Schonberg  <schonberg@adacore.com>

        * sem_attr.adb (Check_Array_Type): An array type attribute such
        as 'First can be applied to an unconstrained array tyope when
        the attribute reference appears within an aspect specification
        and the prefix is a current instance, given that the prefix of
        the attribute will become a formal of the subprogram that
        implements the aspect (typically a predicate check).

2019-07-04  Piotr Trojanek  <trojanek@adacore.com>

        * sem_util.adb (Yields_Synchronized_Object): Fix typos in
        comments.

2019-07-04  Yannick Moy  <moy@adacore.com>

        * sem_util.adb (Yields_Synchronized_Object): Adapt to new SPARK
        rule.

2019-07-04  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb (Check_Statement): Only check permission of
        object in extended return when it is of a deep type.

2019-07-04  Justin Squirek  <squirek@adacore.com>

        * sem_ch12.adb (Perform_Appropriate_Analysis): Added for
        selecting which type of analysis based on wheither the
        instantiation is a generic at the library-level. In which case
        expansion during analysis.
        (Preanalyze_Actuals): Modify calls to Analyze to use the new
        routine.

2019-07-04  Ed Schonberg  <schonberg@adacore.com>

        * exp_unst.adb: Handle conditional expressions.

2019-07-04  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb (Check_Package_Spec, Check_Package_Body): Only
        analyze parts of the code marked in SPARK.

2019-07-04  Hristian Kirtchev  <kirtchev@adacore.com>

        * erroutc.adb, exp_aggr.adb, inline.adb, opt.adb, sem_ch3.adb:
        Minor reformatting.

2019-07-04  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb (Explanation, Get_Expl): New functions to get
        the explanation for a permission mismatch.
        (Perm_Error, Perm_Mismatch, Perm_Error_Loop_Exit): Take
        explanation into account for issuing a more precise error
        message.
        (Set_Perm_Prefixes, Set_Perm_Extensions,
        Set_Perm_Extensions_Move): Pass suitable argument for the
        explanation node.

2019-07-04  Arnaud Charlet  <charlet@adacore.com>

        * exp_aggr.adb (In_Place_Assign_OK): Moved to top level and add
        support for record aggregates.
        (Component_Check): Use Is_CCG_Supported_Aggregate instead of a
        similar local predicate.
        (Convert_To_Assignments): Take advantage of In_Place_Assign_OK
        predicate when possible.
        (Is_CCG_Supported_Aggregate): Return False for records with
        representation clauses and fix the logic for dealing with nested
        aggregates.

2019-07-04  Piotr Trojanek  <trojanek@adacore.com>

        * opt.adb (Set_Config_Switches): Keep assertions policy as
        enabled when analysing internal units in GNATprove mode.

2019-07-04  Arnaud Charlet  <charlet@adacore.com>

        * exp_ch4.adb (Expand_Short_Circuit_Operator): Strip
        N_Variable_Reference_Marker when checking for the presence of
        actions.

2019-07-04  Arnaud Charlet  <charlet@adacore.com>

        * exp_aggr.adb (Check_Component): Take into account type
        conversions.

2019-07-04  Dmitriy Anisimkov  <anisimko@adacore.com>

        * doc/gnat_ugn/platform_specific_information.rst: Document
        Windows socket timeout particularity.
        * gnat_ugn.texi: Regenerate.
        * gsocket.h: Include versionhelpers.h.
        * socket.c (__gnat_minus_500ms): New function.
        * libgnat/g-sothco.ads (Minus_500ms_Windows_Timeout): New
        imported function.
        * libgnat/g-socket.adb (Set_Socket_Option): Refactor to remove
        500ms from the requested timeout only on old Windows version.

2019-07-04  Thomas Quinot  <quinot@adacore.com>

        * get_scos.adb: Remove bogus, dead code.

2019-07-04  Ed Schonberg  <schonberg@adacore.com>

        * sem_dim.adb (Analyze_Dimension_Array_Aggregate): If the
        component is an entity name, its dimensions are those of its
        type.

2019-07-03  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Document new flags in
        GNATpp.

2019-07-03  Hristian Kirtchev  <kirtchev@adacore.com>

        * binde.adb: Remove with clause for System.OS_Lib.
        (Force_Elab_Order): Refactor the majority of the code in Butil.
        Use the new forced units iterator to obtain unit names.
        * bindo-builders.adb: Add with and use clauses for Binderr,
        Butil, Opt, Output, Types, GNAT, and GNAT.Dynamic_HTables.  Add
        a hash table which maps units to line number in the forced
        elaboration order file.
        (Add_Unit): New routine.
        (Build_Library_Graph): Create forced edges between pairs of
        units listed in the forced elaboration order file.
        (Create_Forced_Edge, Create_Forced_Edges, Destroy_Line_Number,
        Duplicate_Unit_Error, Hash_Unit, Internal_Unit_Info,
        Is_Duplicate_Unit, Missing_Unit_Info): New routines.
        * bindo-graphs.adb (Is_Internal_Unit, Is_Predefined_Unit):
        Refactor some of the behavior to Bindo-Units.
        * bindo-graphs.ads: Enable the enumeration literal for forced
        edges.
        * bindo-units.adb, bindo-units.ads (Is_Internal_Unit,
        Is_Predefined_Unit): New routines.
        * butil.adb: Add with and use clauses for Opt, GNAT, and
        System.OS_Lib.  Add with clause for Unchecked_Deallocation.
        (Has_Next, Iterate_Forced_Units, Next, Parse_Next_Unit_Name,
        Read_Forced_Elab_Order_File): New routines.
        * butil.ads: Add with and use clauses for Types.  Add new
        iterator over the units listed in the forced elaboration order
        file.
        (Has_Next, Iterate_Forced_Units, Next): New routine.
        * namet.adb, namet.ads (Present): New routine.

2019-07-03  Bob Duff  <duff@adacore.com>

        * sem_ch3.adb (Access_Definition): The code was creating a
        master in the case where the designated type is a class-wide
        interface type. Create a master in the noninterface case as
        well. That is, create a master for all limited class-wide types.

2019-07-03  Yannick Moy  <moy@adacore.com>

        * erroutc.adb (Sloc_In_Range): New function to determine whether
        the range of a pragma Warnings covers a location, taking
        instantiations into account.

2019-07-03  Johannes Kanig  <kanig@adacore.com>

        * osint.ads, osint.adb (Get_First_Main_File_Name): New routine
        to access the first file provided on the command line.

2019-07-03  Ed Schonberg  <schonberg@adacore.com>

        * inline.adb (Process_Formals_In_Aspects): New procedure within
        Expand_Inlined_Call, to perform a replacement of references to
        formals that appear in aspect specifications within the body
        being inlined.

2019-07-03  Justin Squirek  <squirek@adacore.com>

        * sem_ch8.adb (Analyze_Object_Renaming): Add call to search for
        the appropriate actual subtype of the object renaming being
        analyzed.
        (Check_Constrained_Object): Minor cleanup.

2019-07-03  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb (Get_Observed_Or_Borrowed_Expr): New function to
        return go through traversal function call.
        (Check_Type): Consistently use underlying type.
        (Get_Perm): Adapt for case of elaboration code where variables
        are not declared in the environment. Remove incorrect handling
        of borrow and observe.

2019-07-03  Hristian Kirtchev  <kirtchev@adacore.com>

        * inline.adb (Build_Return_Object_Formal): New routine.
        (Can_Split_Unconstrained_Function): Code clean up.
        (Copy_Formals,Copy_Return_Object): New routines.
        (Split_Unconstrained_Function): Code clean up and refactoring.

2019-07-03  Gary Dismukes  <dismukes@adacore.com>

        * bindo-augmentors.adb, bindo-augmentors.ads,
        bindo-builders.ads, bindo-elaborators.adb, sem_ch12.adb,
        sem_ch13.adb, sem_spark.adb, sinfo.ads: Minor editorial
        corrections and reformatting.

2019-07-03  Bob Duff  <duff@adacore.com>

        * sem_warn.adb (Check_Infinite_Loop_Warning): Avoid the warning
        if an Iterator_Specification is present.

2019-07-03  Bob Duff  <duff@adacore.com>

        * doc/gnat_ugn/gnat_utility_programs.rst: Document default
        new-line behavior.

2019-07-03  Hristian Kirtchev  <kirtchev@adacore.com>

        * ali.adb: Add with and use clauses for GNAT,
        GNAT.Dynamic_HTables, and Snames.  Add a map from invocation
        signature records to invocation signature ids.  Add various
        encodings of invocation-related attributes.  Sort and update
        table Known_ALI_Lines.
        (Add_Invocation_Construct, Add_Invocation_Relation,
        Body_Placement_Kind_To_Code, Code_To_Body_Placement_Kind,
        Code_To_Invocation_Construct_Kind, Code_To_Invocation_Kind,
        Code_To_Invocation_Graph_Line_Kind, Destroy, Hash): New
        routines.
        (Initialize_ALI): Sort the initialization sequence. Add
        initialization for all invocation-related tables.
        (Invocation_Construct_Kind_To_Code,
        Invocation_Graph_Line_Kind_To_Code, Invocation_Kind_To_Code,
        Invocation_Signature_Of, Present): New routines.
        (Scan_ALI): Add the default values for invocation-related ids.
        Scan invocation graph lines.
        (Scan_Invocation_Graph_Line): New routine.
        * ali.ads: Add with clause for GNAT.Dynamic_Tables.  Add types
        for invocation constructs, relations, and signatures.  Add
        tables for invocation constructs, relations, and signatures.
        Update Unit_Record to capture invocation-related ids.  Relocate
        table Unit_Id_Tables and subtypes Unit_Id_Table, Unit_Id_Array
        from Binde.
        (Add_Invocation_Construct, Add_Invocation_Relation,
        Body_Placement_Kind_To_Code, Code_To_Body_Placement_Kind,
        Code_To_Invocation_Construct_Kind, Code_To_Invocation_Kind,
        Code_To_Invocation_Graph_Line_Kind,
        Invocation_Construct_Kind_To_Code,
        Invocation_Graph_Line_Kind_To_Code, Invocation_Kind_To_Code,
        Invocation_Signature_Of, Present): New routines.
        * binde.adb: Add with and use clause for Types.  Add use clause
        for ALI.Unit_Id_Tables;
        * binde.ads: Relocate table Unit_Id_Tables and subtypes
        Unit_Id_Table, Unit_Id_Array to ALI.
        * bindgen.adb: Remove with and use clause for ALI.
        * bindgen.ads: Remove with and use clause for Binde.  Add with
        and use clause for ALI.
        * bindo.adb,  bindo.ads, bindo-augmentors.adb,
        bindo-augmentors.ads, bindo-builders.adb, bindo-builders.ads,
        bindo-diagnostics.adb, bindo-diagnostics.ads,
        bindo-elaborators.adb, bindo-elaborators.ads, bindo-graphs.adb,
        bindo-graphs.ads, bindo-units.adb, bindo-units.ads,
        bindo-validators.adb, bindo-validators.ads, bindo-writers.adb,
        bindo-writers.ads: New units.
        * debug.adb: Use and describe GNAT debug switches -gnatd_F and
        -gnatd_G.  Add GNATbind debug switches in the ranges dA .. dZ,
        d.a .. d.z, d.A .. d.Z, d.1 .. d.9, d_a .. d_z, d_A .. d_Z, and
        d_1 .. d_9.  Use and describe GNATbind debug switches -d_A,
        -d_I, -d_L, -d_N, -d_O, -d_T, and -d_V.
        * exp_util.adb, exp_util.ads (Exceptions_OK): Relocate to
        Sem_Util.
        * gnatbind.adb: Add with and use clause for Bindo.  Use the new
        Bindo elaboration order only when -d_N is in effect.
        * lib-writ.adb
        (Column, Extra, Invoker, Kind, Line, Locations, Name, Placement,
        Scope, Signature, Target): New routines.
        (Write_ALI): Output all invocation-related data.
        (Write_Invocation_Graph): New routine.
        * lib-writ.ads: Document the invocation graph ALI line.
        * namet.adb, namet.ads (Present): New routines.
        * sem_ch8.adb (Find_Direct_Name): Capture the status of
        elaboration checks and warnings of an identifier.
        (Find_Expanded_Name): Capture the status of elaboration checks
        and warnings of an expanded name.
        * sem_ch12.adb (Analyze_Generic_Package_Declaration): Ensure
        that invocation graph-related data within the body of the main
        unit is encoded in the ALI file.
        (Analyze_Generic_Subprogram_Declaration): Ensure that invocation
        graph-related data within the body of the main unit is encoded
        in the ALI file.
        (Analyze_Package_Instantiation): Perform minimal decoration of
        the instance entity.
        (Analyze_Subprogram_Instantiation): Perform minimal decoration
        of the instance entity.
        * sem_elab.adb: Perform heavy refactoring of all code. The unit
        is now split into "services" which specialize in one area of ABE
        checks.  Add processing in order to capture invocation-graph
        related attributes of the main unit, and encode them in the ALI
        file.  The Processing phase can now operate in multiple modes,
        all described by type Processing_Kind.  Scenarios and targets
        are now distinct at the higher level, and carry their own
        representations. This eliminates the need to constantly
        recompute their attributes, and offers the various processors a
        uniform interface.  The various initial states of the Processing
        phase are now encoded using type Processing_In_State, and
        xxx_State constants.
        * sem_elab.ads: Update the literals of type
        Enclosing_Level_Kind.  Add Inline pragmas on several routines.
        * sem_prag.adb (Process_Inline): Ensure that invocation
        graph-related data within the body of the main unit is encoded
        in the ALI file.
        * sem_util.adb (Enclosing_Generic_Body, Enclosing_Generic_Unit):
        Code clean up.
        (Exceptions_OK): Relocated from Sem_Util.
        (Mark_Save_Invocation_Graph_Of_Body): New routine.
        * sem_util.ads (Exceptions_OK): Relocated from Sem_Util.
        (Mark_Save_Invocation_Graph_Of_Body): New routine.
        * sinfo.adb (Is_Elaboration_Checks_OK_Node): Now applicable to
        N_Variable_Reference_Marker.
        (Is_Elaboration_Warnings_OK_Node): Now applicable to
        N_Expanded_Name, N_Identifier, N_Variable_Reference_Marker.
        (Is_Read): Use Flag4.
        (Is_SPARK_Mode_On_Node): New applicable to
        N_Variable_Reference_Marker.
        (Is_Write): Use Flag5.
        (Save_Invocation_Graph_Of_Body): New routine.
        (Set_Is_Elaboration_Checks_OK_Node): Now applicable to
        N_Variable_Reference_Marker.
        (Set_Is_Elaboration_Warnings_OK_Node): Now applicable to
        N_Expanded_Name, N_Identifier, N_Variable_Reference_Marker.
        (Set_Is_SPARK_Mode_On_Node): New applicable to
        N_Variable_Reference_Marker.
        (Set_Save_Invocation_Graph_Of_Body): New routine.
        * sinfo.ads: Update the documentation of attributes
        Is_Elaboration_Checks_OK_Node, Is_Elaboration_Warnings_OK_Node,
        Is_SPARK_Mode_On_Node.  Update the flag usage of attributes
        Is_Read, Is_Write.  Add attribute Save_Invocation_Graph_Of_Body
        and update its occurrence in nodes.
        (Save_Invocation_Graph_Of_Body): New routine along with pragma
        Inline.
        (Set_Save_Invocation_Graph_Of_Body): New routine along with
        pragma Inline.
        * switch-b.adb (Scan_Binder_Switches): Refactor the scanning of
        debug switches.
        (Scan_Debug_Switches): New routine.
        * libgnat/g-dynhta.adb, libgnat/g-dynhta.ads (Contains): New routine.
        * libgnat/g-graphs.adb (Associate_Vertices): Update the use of
        Component_Vertex_Iterator.
        (Contains_Component, Contains_Edge, Contains_Vertex, Has_Next):
        Reimplemented.
        (Iterate_Component_Vertices): New routine.
        (Iterate_Vertices): Removed.
        (Next): Update the parameter profile.
        (Number_Of_Component_Vertices, Number_Of_Outgoing_Edges): New
        routines.
        * libgnat/g-graphs.ads: Update the initialization of
        No_Component.  Add type Component_Vertex_Iterator.  Remove type
        Vertex_Iterator.
        (Has_Next): Add new versions and remove old ones.
        (Iterate_Component_Vertices): New routine.
        (Iterate_Vertices): Removed.
        (Next): Add new versions and remove old ones.
        (Number_Of_Component_Vertices, Number_Of_Outgoing_Edges): New
        routines.
        * libgnat/g-sets.adb (Contains): Reimplemented.
        * gcc-interface/Make-lang.in (GNATBIND_OBJS): Add
        GNAT.Dynamic_HTables, GNAT.Graphs and Bindo units.
        * rtsfind.ads: Remove extra space.

2019-07-03  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb: Add support for locally borrowing and observing
        a path.
        (Get_Root_Object): Add parameter Through_Traversal to denote
        when we are interesting in getting to the traversed parameter.
        (Is_Prefix_Or_Almost): New function to support detection of
        illegal access to borrowed or observed paths.
        (Check_Pragma): Add analysis of assertion pragmas.

2019-07-03  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Build_Predicate_Functions): In a generic context
        we do not build the bodies of predicate fuctions, but the
        expression in a static predicate must be elaborated to allow
        case coverage checking within the generic unit.
        (Build_Discrete_Static_Predicate): In a generic context, return
        without building function body once the
        Static_Discrete_Predicate expression for the type has been
        constructed.

2019-07-03  Hristian Kirtchev  <kirtchev@adacore.com>

        * bindgen.adb, inline.adb, layout.adb, sem_ch12.adb,
        sem_ch13.adb, sem_ch7.adb, styleg.adb: Minor reformatting.

2019-07-03  Bob Duff  <duff@adacore.com>

        * par-ch3.adb (P_Defining_Identifier): Call
        Check_Defining_Identifier_Casing.
        * style.ads, styleg.ads, styleg.adb
        (Check_Defining_Identifier_Casing): New procedure to check for
        mixed-case defining identifiers.
        * stylesw.ads, stylesw.adb (Style_Check_Mixed_Case_Decls): New
        flag for checking for mixed-case defining identifiers.
        * doc/gnat_ugn/building_executable_programs_with_gnat.rst:
        Document new feature.
        * gnat_ugn.texi: Regenerate.

2019-07-03  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/gnat_ugn/building_executable_programs_with_gnat.rst
        (Warning message control): Document that -gnatw.z/Z apply to
        array types.
        * freeze.adb (Freeze_Entity): Give -gnatw.z warning for array
        types as well, but not if the specified alignment is the minimum
        one.
        * gnat_ugn.texi: Regenerate.

2019-07-03  Bob Duff  <duff@adacore.com>

        * einfo.ads, exp_util.adb, layout.ads, sinfo.ads: Spell "laid"
        correctly.

2019-07-03  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch13.adb (Analyze_Attribute_Definition_Clause): No error
        message on attribute applied to a renaming when the renamed
        object is an aggregate (from code reading).
        (Check_Aspect_At_End_Of_Declarations): In a generic context
        where freeze nodes are not generated, the original expression
        for an aspect may need to be analyzed to precent spurious
        conformance errors when compared with the expression that is
        anakyzed at the end of the current declarative list.

2019-07-03  Eric Botcazou  <ebotcazou@adacore.com>

        * layout.adb (Layout_Type): Do not set the component size of an
        array with a scalar component if the component type is
        overaligned.

2019-07-03  Ed Schonberg  <schonberg@adacore.com>

        * inline.adb (Make_Loop_Labels_Unique): New procedure to modify
        the source code of subprograms that are inlined by the
        front-end, to prevent accidental duplication between loop labels
        in the inlined code and the code surrounding the inlined call.

2019-07-03  Hristian Kirtchev  <kirtchev@adacore.com>

        * doc/gnat_ugn/elaboration_order_handling_in_gnat.rst: Update
        the section on resolving elaboration circularities to eliminate
        certain combinations of switches which together do not produce
        the desired effect and confuse users.
        * gnat_ugn.texi: Regenerate.

2019-07-03  Arnaud Charlet  <charlet@adacore.com>

        * bindgen.adb (Gen_Main): Disable generation of reference to
        Ada_Main_Program_Name for CCG.
        * bindusg.adb (Display): Add -G to the command-line usage for
        gnatbind.
        * opt.ads (Generate_C_Code): Update comment.
        * switch-b.adb (Scan_Binder_Switches): Add handling for -G.

2019-07-03  Arnaud Charlet  <charlet@adacore.com>

        * sem_ch7.adb (Has_Referencer): Do not consider inlined
        subprograms when generating C code, which allows us to generate
        static inline subprograms.

2019-07-03  Justin Squirek  <squirek@adacore.com>

        * sem_ch6.adb (Check_Conformance): Add expression checking for
        constant modifiers in anonymous access types (in addition to
        "non-null" types) so that they are considered "matching" for
        subsequent conformance tests.

2019-07-03  Arnaud Charlet  <charlet@adacore.com>

        * doc/gnat_rm/standard_and_implementation_defined_restrictions.rst:
        Clarify wording on No_Multiple_Elaboration.
        * gnat_rm.texi: Regenerate.

2019-07-03  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch8.adb (Find_Selected_Component): If the prefix is the
        current instance of a type or subtype, complete the resolution
        of the name by finding the component of the type denoted by the
        selector name.

2019-07-03  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/gnat_rm/interfacing_to_other_languages.rst (Interfacing to C):
        Document that boolean types with convention C now map to C99 bool.
        * gnat_rm.texi: Regenerate.

2019-07-03  Javier Miranda  <miranda@adacore.com>

        * exp_attr.adb (Expand_Min_Max_Attribute): Code cleanup:
        removing code that it is now never executed in the CCG compiler
        (dead code).

2019-07-02  Iain Sandoe  <iain@sandoe.co.uk>

        * libgnat/system-darwin-ppc.ads: Set Stack_Check_Probes True for
        PPC Darwin.

2019-07-01  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch12.adb (Is_Defaulted): New predicate in
        Check_Formal_Package_Intance, to skip the conformance of checks
        on parameters of a formal package that are defaulted,

2019-07-01  Hristian Kirtchev  <kirtchev@adacore.com>

        * checks.adb, exp_ch9.adb, exp_unst.adb, sem_ch4.adb,
        sem_prag.adb, sem_spark.adb: Minor reformatting.

2019-07-01  Ed Schonberg  <schonberg@adacore.com>

        * sem_attr.adb (Analyze_Attribute, case Enum_Rep): Allow prefix
        of attribute to be an attribute reference of a discrete type.

2019-07-01  Eric Botcazou  <ebotcazou@adacore.com>

        * sem_ch12.adb (Analyze_Subprogram_Instantiation): Move up
        handling of Has_Pragma_Inline_Always and deal with
        Has_Pragma_No_Inline.

2019-07-01  Ed Schonberg  <schonberg@adacore.com>

        * sem_ch3.adb (Build_Derived_Record_Type): If the parent type is
        declared as a subtype of a private type with an inherited
        discriminant constraint, its generated full base appears as a
        record subtype, so we need to retrieve its oen base type so that
        the inherited constraint can be applied to it.

2019-07-01  Yannick Moy  <moy@adacore.com>

        * sem_spark.adb: Completely rework the algorithm for ownership
        checking, as the rules in SPARK RM have changed a lot.
        * sem_spark.ads: Update comments.

2019-07-01  Dmitriy Anisimkov  <anisimko@adacore.com>

        * gsocket.h (Has_Sockaddr_Len): Use the offset of sin_family offset in
        the sockaddr_in structure to determine the existence of length field
        before the sin_family.

2019-07-01  Ed Schonberg  <schonberg@adacore.com>

        * sem_prag.adb (Analyze_Pragma, case Weak_External): Pragma only
        applies to entities with run-time addresses, not to types.

2019-07-01  Piotr Trojanek  <trojanek@adacore.com>

        * einfo.adb, sem_ch7.adb, sem_prag.adb, sem_util.adb: Update
        references to the SPARK RM after the removal of Rule 7.1.4(5).

2019-07-01  Piotr Trojanek  <trojanek@adacore.com>

        * sysdep.c: Cleanup references to LynuxWorks in docs and
        comments.

2019-07-01  Ed Schonberg  <schonberg@adacore.com>

        * checks.adb (Insert_Valid_Check): Do not apply validity check
        to variable declared within a protected object that uses the
        Lock_Free implementation, to prevent unwarranted constant
        folding, because entities within such an object msut be treated
        as volatile.

2019-07-01  Eric Botcazou  <ebotcazou@adacore.com>

        * exp_ch9.adb (Check_Inlining): Deal with Has_Pragma_No_Inline.

2019-07-01  Ed Schonberg  <schonberg@adacore.com>

        * exp_unst.adb (Visit_Node, Check_Static_Type): Improve the
        handling of private and incomplete types whose full view is an
        access type, to detect additional uplevel references in dynamic
        bounds. This is relevant to N_Free_Statement among others that
        manipulate types whose full viww may be an access type.

2019-07-01  Pat Rogers  <rogers@adacore.com>

        * doc/gnat_rm/representation_clauses_and_pragmas.rst: Correct
        size indicated for R as a component of an array.
        * gnat_rm.texi: Regenerate.

2019-07-01  Justin Squirek  <squirek@adacore.com>

        * libgnat/s-win32.ads: Add definition for ULONG, modify
        OVERLAPPED type, and add appropriate pragmas.

2019-07-01  Bob Duff  <duff@adacore.com>

        * gnat1drv.adb (gnat1drv): Call Write_ALI if the main unit is
        ignored-ghost.

2019-07-01  Yannick Moy  <moy@adacore.com>

        * sem_ch4.adb (Operator_Check): Refine error message.

2019-07-01  Piotr Trojanek  <trojanek@adacore.com>

        * libgnat/a-calend.ads: Revert "Global => null" contracts on
        non-pure routines.

2019-07-01  Piotr Trojanek  <trojanek@adacore.com>

        * exp_attr.adb, libgnat/g-graphs.ads: Fix typos in comments:
        componant -> component.

2019-07-01  Hristian Kirtchev  <kirtchev@adacore.com>

        * libgnat/g-graphs.adb: Use type Directed_Graph rather than
        Instance in various routines.
        * libgnat/g-graphs.ads: Change type Instance to Directed_Graph.
        Update various routines that mention the type.

2019-07-01  Hristian Kirtchev  <kirtchev@adacore.com>

        * libgnat/g-sets.adb: Use type Membership_Set rathern than
        Instance in various routines.
        * libgnat/g-sets.ads: Change type Instance to Membership_Set.
        Update various routines that mention the type.

2019-07-01  Hristian Kirtchev  <kirtchev@adacore.com>

        * libgnat/g-lists.adb: Use type Doubly_Linked_List rather than
        Instance in various routines.
        * libgnat/g-lists.ads: Change type Instance to
        Doubly_Linked_List. Update various routines that mention the
        type.

2019-07-01  Hristian Kirtchev  <kirtchev@adacore.com>

        * libgnat/g-dynhta.adb: Use type Dynamic_Hash_Table rather than
        Instance in various routines.
        * libgnat/g-dynhta.ads: Change type Instance to
        Dynamic_Hash_Table. Update various routines that mention the
        type.

2019-07-01  Hristian Kirtchev  <kirtchev@adacore.com>

        * exp_attr.adb, exp_ch7.adb, exp_unst.adb, sem_ch3.adb,
        sem_util.adb, uintp.adb, uintp.ads: Minor reformatting.

2019-07-01  Javier Miranda  <miranda@adacore.com>

        * exp_attr.adb (Expand_Min_Max_Attribute): Disable expansion of
        'Min/'Max on integer, enumeration, fixed point and floating
        point types since the CCG backend now provides in file
        standard.h routines to support it.

2019-07-01  Hristian Kirtchev  <kirtchev@adacore.com>

        * impunit.adb: Add GNAT.Graphs to list Non_Imp_File_Names_95.
        * Makefile.rtl, gcc-interface/Make-lang.in: Register unit
        GNAT.Graphs.
        * libgnat/g-dynhta.adb: Various minor cleanups (use Present
        rather than direct comparisons).
        (Delete): Reimplement to use Delete_Node.
        (Delete_Node): New routine.
        (Destroy_Bucket): Invoke the provided destructor.
        (Present): New routines.
        * libgnat/g-dynhta.ads: Add new generic formal Destroy_Value.
        Use better names for the components of iterators.
        * libgnat/g-graphs.adb, libgnat/g-graphs.ads: New unit.
        * libgnat/g-lists.adb: Various minor cleanups (use Present
        rather than direct comparisons).
        (Delete_Node): Invoke the provided destructor.
        (Present): New routine.
        * libgnat/g-lists.ads: Add new generic formal Destroy_Element.
        Use better names for the components of iterators.
        (Present): New routine.
        * libgnat/g-sets.adb, libgnat/g-sets.ads (Destroy, Preset,
        Reset): New routines.

2019-07-01  Dmitriy Anisimkov  <anisimko@adacore.com>

        * libgnat/g-sothco.adb (Get_Address): Fix the case when AF_INET6
        is not defined.

2019-07-01  Ed Schonberg  <schonberg@adacore.com>

        * exp_attr.adb (Expand_Attribute_Reference, case Invalid_Value):
        Resolve result of call to Get_Simple_Init_Val, which may be a
        conversion of a literal.

2019-07-01  Hristian Kirtchev  <kirtchev@adacore.com>

        * freeze.adb (Freeze_Expression): Remove the horrible useless
        name hiding of N. Insert the freeze nodes generated by the
        expression prior to the expression when the nearest enclosing
        scope is transient.

2019-07-01  Pierre-Marie de Rodat  <derodat@adacore.com>

        * doc/gnat_ugn/building_executable_programs_with_gnat.rst: Fix
        formatting issues in the -gnatR section.
        * gnat_ugn.texi: Regenerate.

2019-06-30  Iain Sandoe  <iain@sandoe.co.uk>

        * gnatlink.adb (Link_Step): Remove duplicate -static-libgcc switches.
        Push -shared-libgcc explicitly, when it is the target default (unless
        overidden by the static flag).
        When the user has put an instance of shared/static-libgcc do not push
        a duplicate of this.

2019-06-29  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity): Beep up comment on SAVED,
        and tweak comment on the assertion about the scopes of Itypes.  Do not
        skip the regular processing for Itypes that are E_Record_Subtype with
        a Cloned_Subtype.  Get the Cloned_Subtype for every E_Record_Subtype
        if the type is dummy and hasn't got its own freeze node.
        <E_Record_Subtype>: Save again the DECL of the Cloned_Subtype, if any.
        <E_Access_Subtype>: Save again the DECL of the equivalent type.
        (Gigi_Equivalent_Type) <E_Access_Subtype>: New case.

2019-06-29  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils.c (unchecked_convert): Tweak comment.  Only skip
        dereferences when padding to have the same size on both sides.  Do it
        for destination types with self-referential size too.

2019-06-29  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Type>: If the
        type requires strict alignment, then set the RM size to the type size.
        Rework handling of alignment and sizes of tagged types in ASIS mode.
        (validate_size): Rename local variable and remove special handling for
        strict-alignment types.
        * gcc-interface/utils.c (finish_record_type): Constify local variables
        and use properly typed constants.

2019-06-29  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_field): Rework error messages for
        fields requiring strict alignment, add explicit test on Storage_Unit
        for position and size, and mention type alignment for position.

2019-06-29  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (mark_visited_r): Set TYPE_SIZES_GIMPLIFIED on
        the main variant of a type, if any.

2019-06-29  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (set_nonaliased_component_on_array_type): Add
        missing guard for the presence of TYPE_CANONICAL.
        (set_reverse_storage_order_on_array_type): Likewise.

2019-06-29  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/gigi.h (make_packable_type): Remove default value.
        (value_factor_p): Tweak prototype.
        * gcc-interface/decl.c (gnat_to_gnu_entity): Add comment.
        (gnat_to_gnu_component_type): Likewise.
        (gnat_to_gnu_field): Likewise.  Fetch the position of the field earlier
        and simplify the condition under which the type is packed.  Declare
        local variable is_bitfield.  Pass 1 as max_align to make_packable_type
        if it is set to true.
        (copy_and_substitute_in_layout): Pass 0 to make_packable_type.
        * gcc-interface/utils.c (make_packable_array_type): New function.
        (make_packable_type): Use it to rewrite the type of array field.
        (maybe_pad_type): Pass align parameter to make_packable_type.
        (create_field_decl): Minor tweaks.
        (value_factor_p): Assert that FACTOR is a power of 2 and replace the
        modulo computation by a masking operation.

2019-06-25  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity): Remove superfluous test
        in previous change.
        * gcc-interface/gigi.h (maybe_character_type): Fix formatting.
        (maybe_character_value): Likewise.

2019-06-24  Jan Hubicka  <jh@suse.cz>

        * gcc-interface/decl.c (gnat_to_gnu_entity): Check that
        type is array or integer prior checking string flag.
        * gcc-interface/gigi.h (maybe_character_type): Likewise.
        (maybe_character_value): Likewise.

2019-06-24  Martin Sebor  <msebor@redhat.com>

        * gcc-interface/utils.c (handle_nonnull_attribute): Quote attribute
        name.

2019-06-18  Arnaud Charlet  <charlet@adacore.com>

        PR ada/80590
        * sem_ch5.adb (Analyze_Loop_Statement): Avoid exception propagation
        during normal processing.

2019-06-17  Arnaud Charlet  <charlet@adacore.com>

        PR ada/80590
        * exp_ch9.adb (Expand_N_Delay_Relative_Statement): Swap the two
        conditions to avoid a unnecessary exception propagation in the default
        case.

2019-05-28  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils.c (handle_stack_protect_attribute): Move around.

2019-05-28  Eric Botcazou  <ebotcazou@adacore.com>

        * doc/gnat_rm/implementation_defined_pragmas.rst (Machine_Attribute):
        Document additional optional parameters.
        * sem_prag.adb (Analyze_Pragma) <Pragma_Machine_Attribute>: Accept
        more than one optional parameter.
        * gcc-interface/decl.c (prepend_one_attribute_pragma): Alphabetize
        the list of supported pragmas.  Simplify the handling of parameters
        and add support for more than one optional parameter.
        * gcc-interface/utils.c (attr_cold_hot_exclusions): New constant.
        (gnat_internal_attribute_table): Add entry for no_icf, noipa, flatten,
        used, cold, hot, target and target_clones.
        (begin_subprog_body): Do not create the RTL for the subprogram here.
        (handle_noicf_attribute): New static function.
        (handle_noipa_attribute): Likewise.
        (handle_flatten_attribute): Likewise.
        (handle_used_attribute): Likewise.
        (handle_cold_attribute): Likewise.
        (handle_hot_attribute): Likewise.
        (handle_target_attribute): Likewise.
        (handle_target_clones_attribute): Likewise.

2019-05-28  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (lvalue_required_for_attribute_p): Return 0
        for 'Size too.
        (Identifier_to_gnu): Use the actual subtype for a reference to a
        packed array in a return statement.
        (Attribute_to_gnu) <Attr_Size>: Do not strip VIEW_CONVERT_EXPRs from
        the prefix in every case.

2019-05-28  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (gnat_to_gnu): Remove superfluous tests on
        Backend_Overflow_Checks_On_Target and rework comments.

2019-05-28  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (walk_nesting_tree): New static function.
        (finalize_nrv): Use it to walk the entire nesting tree.

2019-05-28  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Subtype>: Remove
        obsolete test on Is_For_Access_Subtype.

2019-05-28  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (components_to_record): Set a name on the type
        created for the REP part, if any.
        * gcc-interface/utils.c (finish_record_type): Only take the maximum
        when merging sizes for a variant part at offset 0.
        (merge_sizes): Rename has_rep parameter into max.

2019-05-28  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils.c (gnat_internal_attribute_table): Add support
        for stack_protect attribute.
        (handle_stack_protect_attribute): New static function.

2019-05-28  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (intrin_arglists_compatible_p): Do not return
        false if the internal builtin uses a variable list.

2019-05-27  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (Call_to_gnu): Do not initialize the temporary
        created out of addressability concerns if it's for the _Init parameter
        of an initialization procedure.

2019-05-27  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/ada-builtin-types.def: New file.
        * gcc-interface/ada-builtins.def: Likewise.
        * gcc-interface/ada-tree.h (BUILT_IN_LIKELY): New macro.
        (BUILT_IN_UNLIKELY): Likewise.
        * gcc-interface/trans.c (independent_iterations_p): Initialize the
        auto-vector to 16 elements.
        (Call_to_gnu): Remove local variable and change the vector of actual
        parameters to an auto-vector.  Do not convert actual parameters to
        the argument type for front-end built-in functions.  Add support for
        front-end built-in functions.
        (build_noreturn_cond): Use internal instead of built-in function.
        * gcc-interface/utils.c (c_builtin_type): Include ada-builtin-types.def
        (install_builtin_function_types): Likewise.
        (install_builtin_functions): Include ada-builtins.def first.

2019-05-27  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils.c (maybe_pad_type): Issue the warning for the
        specific case of component types preferably.

2019-05-27  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (Identifier_to_gnu): Minor tweaks.
        (gnat_to_gnu): Do not convert the result if it is a reference to an
        unconstrained array used as the prefix of an attribute reference that
        requires an lvalue.

2019-05-27  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (Gigi_Types_Compatible): New predicate.
        (Identifier_to_gnu): Use it to assert that the type of the identifier
        and that of its entity are compatible for gigi.  Rename a couple of
        local variables and separate the processing of the result type.

2019-05-27  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (Call_to_gnu): Use the unpadded type when
        putting back an intermediate conversion the type of the actuals.

2019-05-27  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (gnat_to_gnu) <Shift operations>: Convert the
        count to the unsigned version of its base type before proceeding.

2019-05-16  Martin Sebor  <msebor@redhat.com>

        * gcc-interface/trans.c (check_inlining_for_nested_subprog): Quote
        reserved names.

2019-05-08  Arnaud Charlet  <charlet@adacore.com>

        * standard.ads.h: New file.

2019-05-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * gcc-interface/Makefile.in (install-gcc-specs): Use foreach.
        Honor DESTDIR.

2019-04-29  Michael K. Darling  <darlingm@gmail.com>

        * gnatvsn.ads: Bump Library_Version to 10.

2019-04-24  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
            Bernd Edlinger  <bernd.edlinger@hotmail.de>
            Jakub Jelinek  <jakub@redhat.com>

        PR target/89093
        * raise-gcc.c (TARGET_ATTRIBUTE): Define.
        (continue_unwind, personality_body, PERSONALITY_FUNCTION): Add
        TARGET_ATTRIBUTE.

2019-04-07  Eric Botcazou  <ebotcazou@adacore.com>

        * libgnat/i-cexten.ads (CFloat_128): New type.

2019-03-22  Dmitriy Anisimkov  <anisimko@adacore.com>

        PR ada/89583
        * libgnat/g-socket.adb (Bind_Socket, Connect_Socket,
        Send_Socket): Fix the computation of structure lengths passed to
        low level routines.
        (Is_IPv6_Address): Fix the number of expected colons.

2019-03-11  Martin Liska  <mliska@suse.cz>

        * gcc-interface/misc.c (gnat_post_options): Wrap option name in string
        format message and fix GNU coding style.

2019-02-08  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (gnat_to_gnu) <N_Aggregate>: Minor tweak.
        * gcc-interface/utils.c (convert): Do not pad when doing an unchecked
        conversion here.  Use TREE_CONSTANT throughout the function.
        (unchecked_convert): Also pad if the source is a CONSTRUCTOR and the
        destination is a more aligned array type or a larger aggregate type,
        but not between original and packable versions of a type.

2019-02-08  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/utils.c (max_size) <tcc_unary>: Be prepared for an
        operand with VOID_TYPE.

2019-02-08  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (elaborate_all_entities): Do not elaborate the
        entities of a package renaming another one.

2019-02-08  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (Regular_Loop_to_gnu): Replace tests on
        individual flag_unswitch_loops and flag_tree_loop_vectorize switches
        with test on global optimize switch.
        (Raise_Error_to_gnu): Likewise.

2019-02-07  Eric Botcazou  <ebotcazou@adacore.com>

        * libgnarl/s-linux__sparc.ads (ETIMEDOUT): Set to correct value.

2019-02-06  Arnaud Charlet  <charlet@adacore.com>

        * libgnarl/s-linux__x32.ads: Resync list of signals with s-linux.ads

2019-01-27  Eric Botcazou  <ebotcazou@adacore.com>

        * repinfo.adb (List_Component_Layout): Remove superfluous space for
        zero-sized field.
        * gcc-interface/ada-tree.h (TYPE_IS_EXTRA_SUBTYPE_P): New macro.
        * gcc-interface/gigi.h (create_extra_subtype): Declare.
        * gcc-interface/decl.c (TYPE_ARRAY_SIZE_LIMIT): Likewise.
        (update_n_elem): New function.
        (gnat_to_gnu_entity): Use create_extra_subtype to create extra subtypes
        instead of doing it manually.
        <E_Array_Type>: Use update_n_elem to compute the maximum size.  Use the
        index type instead of base type for the bounds. Set TYPE_ARRAY_MAX_SIZE
        of the array to the maximum size.
        <E_Array_Subtype>: Create an extra subtype using the index type of the
        base array type for self-referential bounds.  Use update_n_elem to
        compute the maximum size.  Set TYPE_ARRAY_MAX_SIZE of the array to the
        maximum size.
        (gnat_to_gnu_field): Clear DECL_NONADDRESSABLE_P on discriminants.
        * gcc-interface/misc.c (gnat_get_alias_set): Return the alias set of
        the base type for an extra subtype.
        (gnat_type_max_size): Remove obsolete code.
        * gcc-interface/trans.c (Attribute_to_gnu): Minor tweak.
        (can_be_lower_p): Deal with pathological types.
        * gcc-interface/utils.c (create_extra_subtype): New function.
        (create_field_decl): Minor tweak.
        (max_size) <tcc_reference>: Compute a better value by using the extra
        subtypes on the self-referential bounds.
        <tcc_binary>: Rewrite.  Deal with "negative value" in unsigned types.
        <tcc_expression>: Likewise.
        * gcc-interface/utils2.c (compare_arrays): Retrieve the original bounds
        of the arrays upfront.  Swap only if the second length is not constant.
        Use comparisons on the original bounds consistently for the null tests.
        (build_binary_op): Use TYPE_IS_EXTRA_SUBTYPE_P macro.
        (build_allocator): Minor tweak.

2019-01-27  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (array_type_has_nonaliased_component): Return
        the same value for every dimension of a multidimensional array type.

2019-01-26  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (Regular_Loop_to_gnu): Use the SLOC of the
        iteration scheme, if present, throughout the translation.

2019-01-26  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (gnat_to_gnu) <N_Assignment_Statement>: Use
        DECL_SIZE_UNIT instead of TYPE_SIZE_UNIT for the size to be assigned
        by a call to memset if the LHS is a DECL.

2019-01-26  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (struct loop_info_d): Remove artificial field.
        (Loop_Statement_to_gnu): Do not set it.

2019-01-26  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/trans.c (Iterate_Acc_Clause_Arg): Fix formatting.
        (Acc_gnat_to_gnu): Likewise.
        (Acc_Data_to_gnu): Likewise.
        (Acc_Var_to_gnu): Likewise.
        (Acc_Reduc_to_gnu): Likewise.
        (Acc_Size_List_to_gnu): Likewise.
        (Pragma_to_gnu) <Pragma_Acc_Loop>: Likewise.
        <Pragma_Acc_Data>): Likewise.
        (find_loop_for): Remove default value for parameters.
        * gcc-interface/trans.c (gnat_to_gnu) <N_Op_And>: Merge into...
        <N_Op_Eq>): ...this.

2019-01-26  Eric Botcazou  <ebotcazou@adacore.com>

        * gcc-interface/decl.c (annotate_value) <INTEGER_CST>: Use test on
        the sign bit instead of on the sign of the value.
        <PLUS_EXPR>: Turn addition of negative constant into subtraction.
        <MULT_EXPR>: Add test for degenerate case.
        <BIT_AND_EXPR>: Simplify.

2019-01-18  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * s-oscons-tmplt.c (AF_INET6): Do not undefine for RTEMS.

2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>

        PR other/16615
        * exp_ch11.adb: Change "can not" to "cannot".
        * sem_ch4.adb: Likewise.

2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>

        PR other/16615
        * exp_ch9.adb: Mechanically replace "can not" with "cannot".
        * libgnat/s-regpat.ads: Likewise.
        * par-ch4.adb: Likewise.
        * set_targ.adb: Likewise.
        * types.ads: Likewise.

2019-01-08  Justin Squirek  <squirek@adacore.com>

        Revert:
        2018-07-31  Justin Squirek  <squirek@adacore.com>

        * lib-writ.adb (Write_With_Lines): Modfiy the generation
        of dependencies within ali files so that source unit
        bodies are properly listed even if said bodies are
        missing.  Perform legacy behavior in GNATprove mode.
        * lib-writ.ads: Modify documentation to reflect current
        behavior.

        and:
        2018-09-26  Justin Squirek  <squirek@adacore.com>

        * lib-writ.adb, lib-writ.ads (Write_With_Lines): Add
        documentation and an extra conditional check for RCI
        units so that generated ali files will list the spec
        only instead of a body when a body is not found.

2019-01-04  Eric Botcazou  <ebotcazou@adacore.com>

        * gnatvsn.ads: Bump copyright year.

2019-01-01  Jakub Jelinek  <jakub@redhat.com>

        Update copyright years.

        * gnat_ugn.texi: Bump @copying's copyright year.
        * gnat_rm.texi: Likewise.
\f
Copyright (C) 2019 Free Software Foundation, Inc.

Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
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