[Ada] Complete the more extended AST traversal used in GNATprove

[gcc.git] / gcc / ada / ChangeLog

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
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