Support -std=f2018

[gcc.git] / gcc / fortran / ChangeLog

2017-12-17  Janne Blomqvist  <jb@gcc.gnu.org>

        * decl.c (gfc_match_implicit_none): Use GFC_STD_F2018 instead of
        GFC_STD_F2015.
        * error.c (gfc_notify_std): Add GFC_STD_F2018{_DEL,_OBS} to
        switch.
        * gfortran.texi: Document -std=f2018.
        * interface.c (compare_parameter): Fix comment.
        * invoke.texi: Document -std=f2018.
        * lang.opt: Add -std=f2018 argumnet.
        * libgfortran.h (GFC_STD_F2015): Rename to GFC_STD_F0218, use
        separate flag bit.
        (GFC_STD_F2018_DEL): New macro.
        (GFC_STD_F2018_OBS): Likewise.
        * match.c (gfc_match_stopcode): Use GFC_STD_F2018.
        * options.c (set_default_std_flags): Add F2018 flags to defaults.
        (gfc_handle_option): Set options for -std=f2018.

2017-12-15  Jakub Jelinek  <jakub@redhat.com>

        * f95-lang.c (gfc_attribute_table): Swap affects_type_identity
        and handler fields, adjust comments.

2017-12-14  Qing Zhao  <qing.zhao@oracle.com>

        PR middle_end/79538
        * class.c (gfc_build_class_symbol): Replace call to
        sprintf with xasprintf to avoid format-overflow warning.
        (generate_finalization_wrapper): Likewise.
        (gfc_find_derived_vtab): Likewise.
        (find_intrinsic_vtab): Likewise.

2017-12-12  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * intrinsic.texi (MAXLOC): Remove double description
        of return value.
        (MINLOC): Likewise.

2017-12-11  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * intrinsic.texi (MAXLOC): Update documentation for
        character arrays and KIND argument.
        (MINLOC): Likewise.

2017-12-11  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/45689
        * simplify.c (min_max_choose): Add prototype.
        (gfc_count): Format correctly.
        (simplify_transformation): Pass array argument to init_result_expr.
        (gfc_simplify_minval_maxval): Remove.
        (gfc_min): New function.
        (gfc_simplify_minval): Call simplify_transformation.
        (gfc_max): New function.
        (gfc_simplify_maxval): Call simplify_transformation.

2017-12-10  Dominique d'Humieres  <dominiq@lps.ens.fr>

        PR fortran/53478
        * gfortran.h (gfc_find_case_gsymbol): New prototype.
        * symbol.c (gfc_find_case_gsymbol): New procedure, case
        insensistive version of gfc_find_gsymbol.
        * resolve.c (resolve_common_blocks): Use it.
        Replace %s with %qs where needed.

2017-12-09  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/82934
        PR fortran/83318
        * match.c (gfc_match_allocate): Enforce F2008:C631.

2017-12-09  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/83316
        * arith.c (gfc_character2character): New function.
        * arith.h: Add prototype.
        * simplify.c (gfc_convert_constant): Handle character type.

2017-12-07  Martin Sebor  <msebor@redhat.com>

        PR c/81544
        * f95-lang.c (gfc_attribute_table): Initialize new member of struct
        attribute_spec.

2017-12-03  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/36313
        * check.c (gfc_check_minval_maxval): Use
        int_orLreal_or_char_check_f2003 for array argument.
        * iresolve.c (gfc_resolve_maxval): Insert number in
        function name for character arguments.
        (gfc_resolve_minval): Likewise.
        * trans-intrinsic.c (gfc_conv_intrinsic_minmaxloc):
        Fix comment.
        (gfc_conv_intrinsic_minmaxval): Resort arguments and call library
        function if dealing with a character function.

2017-12-01  Qing Zhao  <qing.zhao@oracle.com>

        * decl.c (gfc_get_pdt_instance): Adjust the call to sprintf
        to avoid the same buffer being both source and destination.

2017-12-01  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/83224
        * frontend-passes.c (create_var): Also handle
        character arrays, handling deferred lenghts.

2017-12-01  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82605
        * resolve.c (get_pdt_constructor): Initialize 'cons' to NULL.
        (resolve_pdt): Correct typo in prior comment. Emit an error if
        any parameters are deferred and the object is neither pointer
        nor allocatable.

        PR fortran/82606
        * decl.c (gfc_get_pdt_instance): Continue if the parameter sym
        is not present or has no name. Select the parameter by name
        of component, rather than component order. Remove all the other
        manipulations of 'tail' when building the pdt instance.
        (gfc_match_formal_arglist): Emit and error if a star is picked
        up in a PDT decl parameter list.

        PR fortran/82622
        * trans-array.c (set_loop_bounds): If a GFC_SS_COMPONENT has an
        info->end, use it rather than falling through to
        gcc_unreachable.
        (structure_alloc_comps): Check that param->name is non-null
        before comparing with the component name.
        * trans-decl.c (gfc_get_symbol_decl): Do not use the static
        initializer for PDT symbols.
        (gfc_init_default_dt): Do nothing for PDT symbols.
        * trans-io.c (transfer_array_component): Parameterized array
        components use the descriptor ubound since the shape is not
        available.

        PR fortran/82719
        PR fortran/82720
        * trans-expr.c (gfc_conv_component_ref): Do not use the charlen
        backend_decl of pdt strings. Use the hidden component instead.
        * trans-io.c (transfer_expr): Do not do IO on "hidden" string
        lengths. Use the hidden string length for pdt string transfers
        by adding it to the se structure. When finished nullify the
        se string length.

        PR fortran/82866
        * decl.c (gfc_match_formal_arglist): If a name is not found or
        star is found, while reading a type parameter list, emit an
        immediate error.
        (gfc_match_derived_decl): On reading a PDT parameter list, on
        failure to match call gfc_error_recovery.

        PR fortran/82978
        * decl.c (build_struct): Character kind defaults to 1, so use
        kind_expr whatever is the set value.
        (gfc_get_pdt_instance): Ditto.
        * trans-array.c (structure_alloc_comps): Copy the expression
        for the PDT string length before parameter substitution. Use
        this expression for evaluation and free it after use.

2017-12-01  Jakub Jelinek  <jakub@redhat.com>

        PR c/79153
        * match.c (gfc_match): Add FALLTHRU comment to avoid
        -Wimplicit-fallthrough warning.

2017-12-01  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/83224
        * frontend-passes.c (realloc_string_callback): Handle
        case for which the RHS is an array expression.

2017-11-28  Janne Blomqvist  <jb@gcc.gnu.org>

        PR fortran/53796
        * gfortran.texi: Remove mentions of GFORTRAN_DEFAULT_RECL.

2017-11-28  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/83021
        * resolve.c (resolve_component): Only escape for use assciated
        vtypes if the current namespace has no proc_name and is most
        particularly block data.

2017-11-28  Jakub Jelinek  <jakub@redhat.com>

        * trans-decl.c (gfc_trans_entry_master_switch): Build SWITCH_EXPR
        using fold_build2_loc instead of fold_build3_loc.
        * trans-io.c (io_result): Likewise.
        * trans-stmt.c (gfc_trans_integer_select, gfc_trans_character_select):
        Likewise.

2017-11-24  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/81304
        * trans-openmp.c (gfc_trans_omp_array_reduction_or_udr): Set
        attr.implicit_type in intrinsic_sym to avoid undesirable warning.

2017-11-23  Dirk Broemmel  <d.broemmel@fz-juelich.de>
            Jakub Jelinek  <jakub@redhat.com>

        PR fortran/81841
        * parse.c (parse_spec): Allow ST_OMP_THREADPRIVATE inside of
        BLOCK DATA.

2017-11-23  Mike Stump  <mikestump@comcast.net>
            Eric Botcazou  <ebotcazou@adacore.com>

        * trans-stmt.c (gfc_trans_forall_loop): Pass 3rd operand to
        ANNOTATE_EXPR.

2017-11-23  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82814
        * trans-types.c (gfc_sym_type): If a character function result
        is missing the charlen backend_decl, use the one from the name-
        space procedure symbol, if present.

2017-11-22  David Malcolm  <dmalcolm@redhat.com>

        PR c++/62170
        * error.c (gfc_notify_std): Convert "quoted" param from bool to
        bool *.

2017-11-22  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/36313
        * check.c (int_or_real_or_char_check_f2003): New function.
        * iresolve.c (gfc_resolve_maxloc): Add number "2" for
        character arguments and rank-zero return value.
        (gfc_resolve_minloc): Likewise.
        * trans-intrinsic.c (gfc_conv_intrinsic_minmaxloc): Handle case of
        character arguments and rank-zero return value by removing
        unneeded arguments and calling the library function.

2017-11-22  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/79072
        * trans-stmt.c (trans_associate_var): Weaken the over strong
        condition for using the fake result decl.

2017-11-20  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/79072
        * trans-expr.c (trans_class_vptr_len_assignment): Set from_len
        if the temporary is unlimited polymorphic.
        * trans-stmt.c (trans_associate_var): Use the fake result decl
        to obtain the 'len' field from an explicit function result when
        in that function scope.

2017-11-19  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/78990
        * expr.c (gfc_is_class_array_function): Renamed from
        'gfc_is_alloc_class_array_function' and modified to return true
        for pointers as well as allocatable results.
        * gfortran.h : Change of name for prototype of above function.
        * trans-array.c (gfc_add_loop_ss_code): Force finalization of
        class array results.
        (build_class_array_ref): Change assertion into a condition.
        (build_class_array_ref): Set the se class_vptr for class array
        function results.
        (gfc_walk_function_expr): Reference gfc_is_class_array_function
        as above.
        * trans-decl.c (get_proc_result): Move it up before
        gfc_trans_deferred_vars.
        (gfc_trans_deferred_vars): Nullify explicit return class arrays
        on entry.
        * trans-expr.c (gfc_conv_class_to_class): Allow conversion of
        class array functions that have an se class_vptr and use it
        for the result vptr.
        (gfc_conv_subref_array_arg): Rename reference to the above
        function.
        (gfc_conv_procedure_call): Ditto. Add the se pre block to the
        loop pre block before the function is evaluated. Do not
        finalize class pointer results.
        (arrayfunc_assign_needs_temporary, gfc_trans_assignment_1) More
        renamed references.
        * trans-intrinsic.c (gfc_conv_intrinsic_size): Ditto.

2017-11-18  Janne Blomqvist  <jb@gcc.gnu.org>

        PR fortran/83036
        * ioparm.def (IOPARM): Make nextrec a pintio.

2017-11-18  Janne Blomqvist  <jb@gcc.gnu.org>

        PR fortran/44292
        * ioparm.def (IOPARM): Make recl_in intio, and recl_out pintio.

2017-11-18  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/83012
        * expr.c (gfc_is_simply_contiguous): If a function call through a
        class variable is done through a reference, check the function's
        interface.

2017-11-17  Richard Biener  <rguenther@suse.de>

        PR fortran/83017
        * trans-stmt.c (gfc_trans_forall_loop): Annotate DO CONCURRENT
        loops with annot_expr_parallel_kind instead of just
        annot_expr_ivdep_kind.

2017-11-15  Martin Liska  <mliska@suse.cz>

        * options.c (gfc_post_options):
        Do not set default value of warn_return_type.
        * trans-decl.c (gfc_trans_deferred_vars):
        Compare warn_return_type for greater than zero.
        (generate_local_decl): Likewise
        (gfc_generate_function_code): Likewise.

2017-11-13  Fritz Reese <fritzoreese@gmail.com>

        PR fortran/78240
        * decl.c (match_clist_expr): Replace gcc_assert with proper
        handling of bad result from spec_size().
        * resolve.c (check_data_variable): Avoid NULL dereference when passing
        locus to gfc_error.

2017-11-11  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/82932
        * resolve.c (update_compcall_arglist): Improve error recovery,
        remove a gcc_assert.

2017-11-10  Fritz Reese <fritzoreese@gmail.com>

        PR fortran/82886
        * gfortran.h (gfc_build_init_expr): New prototype.
        * invoke.texi (finit-derived): Update documentation.
        * expr.c (gfc_build_init_expr): New, from gfc_build_default_init_expr.
        (gfc_build_default_init_expr): Redirect to gfc_build_init_expr(,,false)
        (component_initializer): Force building initializers using
        gfc_build_init_expr(,,true).

2017-11-10  Martin Sebor  <msebor@redhat.com>

        PR c/81117
        * gcc/fortran/decl.c (build_sym): Use strcpy instead of strncpy.

2017-11-10  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82934
        * trans-stmt.c (gfc_trans_allocate): Remove the gcc_assert on
        null string length for assumed length typespec and set
        expr3_esize to NULL_TREE;

2017-11-09  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/78619
        * check.c (same_type_check): Introduce a new argument 'assoc'
        with default value false. If this is true, use the symbol type
        spec of BT_PROCEDURE expressions.
        (gfc_check_associated): Set 'assoc' true in the call to
        'same_type_check'.

2017-11-09  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/78814
        * interface.c (symbol_rank): Check for NULL pointer.

2017-11-08  Steven G. Kargl  <kargl@kgcc.gnu.org>

        PR Fortran/82841
        * simplify.c(gfc_simplify_transfer): Do not dereference a NULL pointer.
        Unwrap a short line.

2017-11-08  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/82884
        * arith.c (gfc_hollerith2character): Clear pad.

2017-11-08  Janne Blomqvist  <jb@gcc.gnu.org>

        PR 82869
        * convert.c (truthvalue_conversion): Use logical_type_node.
        * trans-array.c (gfc_trans_allocate_array_storage): Likewise.
        (gfc_trans_create_temp_array): Likewise.
        (gfc_trans_array_ctor_element): Likewise.
        (gfc_trans_array_constructor_value): Likewise.
        (trans_array_constructor): Likewise.
        (trans_array_bound_check): Likewise.
        (gfc_conv_array_ref): Likewise.
        (gfc_trans_scalarized_loop_end): Likewise.
        (gfc_conv_array_extent_dim): Likewise.
        (gfc_array_init_size): Likewise.
        (gfc_array_allocate): Likewise.
        (gfc_trans_array_bounds): Likewise.
        (gfc_trans_dummy_array_bias): Likewise.
        (gfc_conv_array_parameter): Likewise.
        (duplicate_allocatable): Likewise.
        (duplicate_allocatable_coarray): Likewise.
        (structure_alloc_comps): Likewise
        (get_std_lbound): Likewise
        (gfc_alloc_allocatable_for_assignment): Likewise
        * trans-decl.c (add_argument_checking): Likewise
        (gfc_generate_function_code): Likewise
        * trans-expr.c (gfc_copy_class_to_class): Likewise
        (gfc_trans_class_array_init_assign): Likewise
        (gfc_trans_class_init_assign): Likewise
        (gfc_conv_expr_present): Likewise
        (gfc_conv_substring): Likewise
        (gfc_conv_cst_int_power): Likewise
        (gfc_conv_expr_op): Likewise
        (gfc_conv_procedure_call): Likewise
        (fill_with_spaces): Likewise
        (gfc_trans_string_copy): Likewise
        (gfc_trans_alloc_subarray_assign): Likewise
        (gfc_trans_pointer_assignment): Likewise
        (gfc_trans_scalar_assign): Likewise
        (fcncall_realloc_result): Likewise
        (alloc_scalar_allocatable_for_assignment): Likewise
        (trans_class_assignment): Likewise
        (gfc_trans_assignment_1): Likewise
        * trans-intrinsic.c (build_fixbound_expr): Likewise
        (gfc_conv_intrinsic_aint): Likewise
        (gfc_trans_same_strlen_check): Likewise
        (conv_caf_send): Likewise
        (trans_this_image): Likewise
        (conv_intrinsic_image_status): Likewise
        (trans_image_index): Likewise
        (gfc_conv_intrinsic_bound): Likewise
        (conv_intrinsic_cobound): Likewise
        (gfc_conv_intrinsic_mod): Likewise
        (gfc_conv_intrinsic_dshift): Likewise
        (gfc_conv_intrinsic_dim): Likewise
        (gfc_conv_intrinsic_sign): Likewise
        (gfc_conv_intrinsic_ctime): Likewise
        (gfc_conv_intrinsic_fdate): Likewise
        (gfc_conv_intrinsic_ttynam): Likewise
        (gfc_conv_intrinsic_minmax): Likewise
        (gfc_conv_intrinsic_minmax_char): Likewise
        (gfc_conv_intrinsic_anyall): Likewise
        (gfc_conv_intrinsic_arith): Likewise
        (gfc_conv_intrinsic_minmaxloc): Likewise
        (gfc_conv_intrinsic_minmaxval): Likewise
        (gfc_conv_intrinsic_btest): Likewise
        (gfc_conv_intrinsic_bitcomp): Likewise
        (gfc_conv_intrinsic_shift): Likewise
        (gfc_conv_intrinsic_ishft): Likewise
        (gfc_conv_intrinsic_ishftc): Likewise
        (gfc_conv_intrinsic_leadz): Likewise
        (gfc_conv_intrinsic_trailz): Likewise
        (gfc_conv_intrinsic_mask): Likewise
        (gfc_conv_intrinsic_spacing): Likewise
        (gfc_conv_intrinsic_rrspacing): Likewise
        (gfc_conv_intrinsic_size): Likewise
        (gfc_conv_intrinsic_sizeof): Likewise
        (gfc_conv_intrinsic_transfer): Likewise
        (gfc_conv_allocated): Likewise
        (gfc_conv_associated): Likewise
        (gfc_conv_same_type_as): Likewise
        (gfc_conv_intrinsic_trim): Likewise
        (gfc_conv_intrinsic_repeat): Likewise
        (conv_isocbinding_function): Likewise
        (conv_intrinsic_ieee_is_normal): Likewise
        (conv_intrinsic_ieee_is_negative): Likewise
        (conv_intrinsic_ieee_copy_sign): Likewise
        (conv_intrinsic_move_alloc): Likewise
        * trans-io.c (set_parameter_value_chk): Likewise
        (set_parameter_value_inquire): Likewise
        (set_string): Likewise
        * trans-openmp.c (gfc_walk_alloc_comps): Likewise
        (gfc_omp_clause_default_ctor): Likewise
        (gfc_omp_clause_copy_ctor): Likewise
        (gfc_omp_clause_assign_op): Likewise
        (gfc_omp_clause_dtor): Likewise
        (gfc_omp_finish_clause): Likewise
        (gfc_trans_omp_clauses): Likewise
        (gfc_trans_omp_do): Likewise
        * trans-stmt.c (gfc_trans_goto): Likewise
        (gfc_trans_sync): Likewise
        (gfc_trans_arithmetic_if): Likewise
        (gfc_trans_simple_do): Likewise
        (gfc_trans_do): Likewise
        (gfc_trans_forall_loop): Likewise
        (gfc_trans_where_2): Likewise
        (gfc_trans_allocate): Likewise
        (gfc_trans_deallocate): Likewise
        * trans-types.c (gfc_init_types): Initialize logical_type_node and
        their true/false trees.
        (gfc_get_array_descr_info): Use logical_type_node.
        * trans-types.h (logical_type_node): New tree.
        (logical_true_node): Likewise.
        (logical_false_node): Likewise.
        * trans.c (gfc_trans_runtime_check): Use logical_type_node.
        (gfc_call_malloc): Likewise
        (gfc_allocate_using_malloc): Likewise
        (gfc_allocate_allocatable): Likewise
        (gfc_add_comp_finalizer_call): Likewise
        (gfc_add_finalizer_call): Likewise
        (gfc_deallocate_with_status): Likewise
        (gfc_deallocate_scalar_with_status): Likewise
        (gfc_call_realloc): Likewise

2017-11-06  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/69739
        * trans-expr.c (gfc_map_intrinsic_function): Return false for
        bounds without the DIM argument instead of ICEing.

2017-11-06  Martin Liska  <mliska@suse.cz>

        PR middle-end/82404
        * options.c (gfc_post_options): Set default value of
        -Wreturn-type to false.

2017-11-05  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/82471
        * lang.opt (ffrontend-loop-interchange): New option.
        (Wfrontend-loop-interchange): New option.
        * options.c (gfc_post_options): Handle ffrontend-loop-interchange.
        * frontend-passes.c (gfc_run_passes): Run
        optimize_namespace if flag_frontend_optimize or
        flag_frontend_loop_interchange are set.
        (optimize_namespace): Run functions according to flags set;
        also call index_interchange.
        (ind_type): New function.
        (has_var): New function.
        (index_cost): New function.
        (loop_comp): New function.

2017-11-05  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/78641
        * resolve.c (resolve_ordinary_assign): Do not add the _data
        component for class valued array constructors being assigned
        to derived type arrays.
        * trans-array.c (gfc_trans_array_ctor_element): Take the _data
        of class valued elements for assignment to derived type arrays.

2017-11-05  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/81447
        PR fortran/82783
        * resolve.c (resolve_component): There is no need to resolve
        the components of a use associated vtype.
        (resolve_fl_derived): Unconditionally generate a vtable for any
        module derived type, as long as the standard is F2003 or later
        and it is not a vtype or a PDT template.

2017-11-05  Tom de Vries  <tom@codesourcery.com>

        PR other/82784
        * parse.c (match, matcha, matchs, matcho, matchds, matchdo): Remove
        semicolon after "do {} while (0)".

2017-11-04  Andre Vehreschild  <vehre@gcc.gnu.org>

        * trans-expr.c (gfc_trans_assignment_1): Character kind conversion may
        create a loop variant temporary, too.
        * trans-intrinsic.c (conv_caf_send): Treat char arrays as arrays and
        not as scalars.
        * trans.c (get_array_span): Take the character kind into account when
        doing pointer arithmetic.

2017-11-04  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/29600
        * gfortran.h (gfc_check_f): Replace fm3l with fm4l.
        * intrinsic.h (gfc_resolve_maxloc): Add gfc_expr * to argument
        list in protoytpe.
        (gfc_resolve_minloc): Likewise.
        * check.c (gfc_check_minloc_maxloc): Handle kind argument.
        * intrinsic.c (add_sym_3_ml): Rename to
        (add_sym_4_ml): and handle kind argument.
        (add_function): Replace add_sym_3ml with add_sym_4ml and add
        extra arguments for maxloc and minloc.
        (check_specific): Change use of check.f3ml with check.f4ml.
        * iresolve.c (gfc_resolve_maxloc): Handle kind argument. If
        the kind is smaller than the smallest library version available,
        use gfc_default_integer_kind and convert afterwards.
        (gfc_resolve_minloc): Likewise.

2017-11-04  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/81735
        * trans-decl.c (gfc_trans_deferred_vars): Do a better job of a
        case where 'tmp' was used unititialized and remove TODO.

2017-11-03  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/82796
        * resolve.c (resolve_equivalence): An entity in a common block within
        a module cannot appear in an equivalence statement if the entity is
        with a pure procedure.

2017-10-31  Jim Wilson  <wilson@tuliptree.org>

        * parse.c (unexpected_eof): Call gcc_unreachable before return.

2017-10-30  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/80850
        * trans_expr.c (gfc_conv_procedure_call): When passing a class
        argument to an unlimited polymorphic dummy, it is wrong to cast
        the passed expression as unlimited, unless it is unlimited. The
        correct way is to assign to each of the fields and set the _len
        field to zero.

2017-10-30  Steven G. Kargl   <kargl@gcc.gnu.org>

        * resolve.c (resolve_transfer): Set derived to correct symbol for
        BT_CLASS.

2017-10-29  Jim Wilson  <wilson@tuliptree.org>

        * invoke.texi: Delete adb and sdb references.

2017-10-28  Andre Vehreschild  <vehre@gcc.gnu.org>

        * check.c (gfc_check_co_reduce): Clarify error message.

2017-10-28  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/81758
        * trans-expr.c (trans_class_vptr_len_assignment): 'vptr_expr'
        must only be set if the right hand side expression is of type
        class.

2017-10-27  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/82620
        * match.c (gfc_match_allocate): Exit early on syntax error.

2017-10-27  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/56342
        * simplify.c (is_constant_array_expr): If the expression is
        a parameter array, call gfc_simplify_expr.

2017-10-25  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * match.c (gfc_match_type_is): Fix typo in error message.

2017-10-21  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82586
        * decl.c (gfc_get_pdt_instance): Remove the error message that
        the parameter does not have a corresponding component since
        this is now taken care of when the derived type is resolved. Go
        straight to error return instead.
        (gfc_match_formal_arglist): Make the PDT relevant errors
        immediate so that parsing of the derived type can continue.
        (gfc_match_derived_decl): Do not check the match status on
        return from gfc_match_formal_arglist for the same reason.
        * resolve.c (resolve_fl_derived0): Check that each type
        parameter has a corresponding component.

        PR fortran/82587
        * resolve.c (resolve_generic_f): Check that the derived type
        can be used before resolving the struture constructor.

        PR fortran/82589
        * symbol.c (check_conflict): Add the conflicts involving PDT
        KIND and LEN attributes.

2017-10-19  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * interface.c (check_sym_interfaces, check_uop_interfaces,
        gfc_check_interfaces): Base interface_name buffer off
        GFC_MAX_SYMBOL_LEN.

2017-10-19  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/82568
        * gfortran.h (gfc_resolve_do_iterator): Add a bool arg.
        (gfc_resolve_omp_local_vars): New declaration.
        * openmp.c (omp_current_ctx): Make static.
        (gfc_resolve_omp_parallel_blocks): Handle EXEC_OMP_TASKLOOP
        and EXEC_OMP_TASKLOOP_SIMD.
        (gfc_resolve_do_iterator): Add ADD_CLAUSE argument, if false,
        don't actually add any clause.  Move omp_current_ctx test
        earlier.
        (handle_local_var, gfc_resolve_omp_local_vars): New functions.
        * resolve.c (gfc_resolve_code): Call gfc_resolve_omp_parallel_blocks
        instead of just gfc_resolve_omp_do_blocks for EXEC_OMP_TASKLOOP
        and EXEC_OMP_TASKLOOP_SIMD.
        (gfc_resolve_code): Adjust gfc_resolve_do_iterator caller.
        (resolve_codes): Call gfc_resolve_omp_local_vars.

2017-10-19  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * gfortran.h (gfc_lookup_function_fuzzy): New declaration.
        (gfc_closest_fuzzy_match): New declaration.
        (vec_push): New definition.
        * misc.c (gfc_closest_fuzzy_match): New definition.
        * resolve.c: Include spellcheck.h.
        (lookup_function_fuzzy_find_candidates): New static function.
        (lookup_uop_fuzzy_find_candidates): Likewise.
        (lookup_uop_fuzzy): Likewise.
        (resolve_operator) <INTRINSIC_USER>: Call lookup_uop_fuzzy.
        (gfc_lookup_function_fuzzy): New definition.
        (resolve_unknown_f): Call gfc_lookup_function_fuzzy.
        * interface.c (check_interface0): Likewise.
        (lookup_arg_fuzzy_find_candidates): New static function.
        (lookup_arg_fuzzy ): Likewise.
        (compare_actual_formal): Call lookup_arg_fuzzy.
        * symbol.c: Include spellcheck.h.
        (lookup_symbol_fuzzy_find_candidates): New static function.
        (lookup_symbol_fuzzy): Likewise.
        (gfc_set_default_type): Call lookup_symbol_fuzzy.
        (lookup_component_fuzzy_find_candidates): New static function.
        (lookup_component_fuzzy): Likewise.
        (gfc_find_component): Call lookup_component_fuzzy.

2017-10-18  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/82567
        * frontend-passes.c (combine_array_constructor): If an array
        constructor is all constants and has more elements than a small
        constant, don't convert a*[b,c] to [a*b,a*c] to reduce compilation
        times.

2017-10-18  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/79795
        * resolve.c (resovle_symbol): Change gcc_assert to
        sensible error message.

2017-10-18  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82550
        * trans_decl.c (gfc_get_symbol_decl): Procedure symbols that
        have the 'used_in_submodule' attribute should be processed by
        'gfc_get_extern_function_decl'.

2017-10-16  Fritz Reese <fritzoreese@gmail.com>

        PR fortran/82511
        * trans-io.c (transfer_expr): Treat BT_UNION as BT_DERIVED.

2017-10-15  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/82372
        * fortran/scanner.c (last_error_char):  New global variable.
        (gfc_scanner_init_1): Set last_error_char to NULL.
        (gfc_gobble_whitespace): If a character not printable or
        not newline, issue an error.

2017-10-13  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/81048
        * resolve.c (resolve_symbol): Ensure that derived type array
        results get default initialization.

2017-10-11  Nathan Sidwell  <nathan@acm.org>

        * cpp.c (gfc_cpp_add_include_path): Update incpath_e names.
        (gfc_cpp_add_include_path_after): Likewise.

2017-10-10  Richard Sandiford  <richard.sandiford@linaro.org>

        * target-memory.c (gfc_interpret_logical): Use wi::to_wide when
        operating on trees as wide_ints.
        * trans-const.c (gfc_conv_tree_to_mpz): Likewise.
        * trans-expr.c (gfc_conv_cst_int_power): Likewise.
        * trans-intrinsic.c (trans_this_image): Likewise.
        (gfc_conv_intrinsic_bound): Likewise.
        (conv_intrinsic_cobound): Likewise.

2017-10-08  Steven G. Kargl  <kargl@gcc.gnu.org>

        * check.c (gfc_check_x): Remove function.
        * intrinsic.c (add_functions): Use gfc_check_fn_r.

2017-10-08  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82375
        * module.c : Bump up MOD_VERSION to 15.
        (mio_component): Edit comment about PDT specification list.
        (mio_expr, mio_symbol): Include the expression and symbol PDT
        specification lists in the same way as in mio_component.

2017-10-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * dump_prase_tree (show_symbol): Output list of variables in
        NAMELIST.
        (show_code_node): Add new line for ELSE and END DO for DO
        CONCURRENT.
        * invoke.texi: Document that the output of
        -fdump-fortran-original, -fdump-fortran-optimized and
        -fdump-parse-tree is unsable and may lead to ICEs.

2017-10-07  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82375
        * class.c (gfc_find_derived_vtab): Return NULL for a passed
        pdt template to prevent bad procedures from being written.
        * decl.c (gfc_get_pdt_instance): Do not use the default
        initializer for pointer and allocatable pdt type components. If
        the component is allocatbale, set the 'alloc_comp' attribute of
        'instance'.
        * module.c : Add a prototype for 'mio_actual_arglist'. Add a
        boolean argument 'pdt'.
        (mio_component): Call it for the parameter list of pdt type
        components with 'pdt' set to true.
        (mio_actual_arg): Add the boolean 'pdt' and, if it is set, call
        mio_integer for the 'spec_type'.
        (mio_actual_arglist): Add the boolean 'pdt' and use it in the
        call to mio_actual_arg.
        (mio_expr, mio_omp_udr_expr): Call mio_actual_arglist with
        'pdt' set false.
        * resolve.c (get_pdt_spec_expr): Add the parameter name to the
        KIND parameter error.
        (get_pdt_constructor): Check that cons->expr is non-null.
        * trans-array.c (structure_alloc_comps): For deallocation of
        allocatable components, ensure that parameterized components
        are deallocated first. Likewise, when parameterized components
        are allocated, nullify allocatable components first. Do not
        recurse into pointer or allocatable pdt components while
        allocating or deallocating parameterized components. Test that
        parameterized arrays or strings are allocated before freeing
        them.
        (gfc_trans_pointer_assignment): Call the new function. Tidy up
        a minor whitespace issue.
        trans-decl.c (gfc_trans_deferred_vars): Set 'tmp' to NULL_TREE
        to prevent the expression from being used a second time.

2017-10-07  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/49232
        * expr.c (gfc_check_pointer_assign): Error
        for non-contiguous rhs.

2017-10-07  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * gfortran.h (async_io_dt): Add external reference.
        * io.c (async_io_dt): Add variable.
        (compare_to_allowed_values): Add prototyte. Add optional argument
        num. If present, set it to the number of the entry that was
        matched.
        (check_io_constraints): If this is for an asynchronous I/O
        statement, set async_io_dt and set the asynchronous flag for
        a SIZE tag.
        * resolve.c (resolve_transfer): If async_io_dt is set, set
        the asynchronous flag on the variable.
        (resolve_fl_namelist): If async_io_dt is set, set the asynchronous
        flag on all elements of the namelist.

2017-10-04  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/60458
        PR fortran/77296
        * resolve.c (resolve_assoc_var): Deferred character type
        associate names must not receive an integer conatant length.
        * symbol.c (gfc_is_associate_pointer): Deferred character
        length functions also require an associate pointer.
        * trans-decl.c (gfc_get_symbol_decl): Deferred character
        length functions or derived type components require the assoc
        name to have variable string length.
        * trans-stmt.c (trans_associate_var): Set the string length of
        deferred string length associate names. The address expression
        is not needed for allocatable, pointer or dummy targets. Change
        the comment about defered string length targets.

2017-10-03  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * io.c (match_wait_element): Correctly match END and EOR tags.
        * dump-parse-tree.c (show_code_node): Handle EXEC_WAIT.

2017-10-02  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82312
        * resolve.c (gfc_resolve_code): Simplify condition for class
        pointer assignments becoming regular assignments by asserting
        that only class valued targets are permitted.
        * trans-expr.c (trans_class_pointer_fcn): New function using a
        block of code from gfc_trans_pointer_assignment.
        (gfc_trans_pointer_assignment): Call the new function. Tidy up
        a minor whitespace issue.

2017-10-01  Dominique d'Humieres  <dominiq@lps.ens.fr>

        PR fortran/61450
        * parse.c (gfc_global_used): Replace the gfc_internal_error
        with an error.

2017-09-29  Dominique d'Humieres  <dominiq@lps.ens.fr>

        PR fortran/25071
        * interface.c (compare_actual_formal): Change warnings to errors
        when "Actual argument contains too few elements for dummy
        argument", unless -std=legacy is used.

2017-09-27  Thomas Schwinge  <thomas@codesourcery.com>

        * lang.opt <Wdo-subscript>: End help text with a period.

2017-09-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * frontend-passes.c (do_subscript): Don't do anything
        if inside an associate list.

2017-09-25  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * lang.opt:  Add -Wdo-subscript.
        * frontend-passes.c (do_t): New type.
        (doloop_list): Use variable of do_type.
        (if_level): Variable to track if levels.
        (select_level): Variable to track select levels.
        (gfc_run_passes): Initialize i_level and select_level.
        (doloop_code): Record current level of if + select
        level in doloop_list.  Add seen_goto if there could
        be a branch outside the loop. Use different type for
        doloop_list.
        (doloop_function): Call do_intent and do_subscript; move
        functionality of checking INTENT to do_intent.
        (insert_index_t): New type, for callback_insert_index.
        (callback_insert_index): New function.
        (insert_index): New function.
        (do_subscript): New function.
        (do_intent): New function.
        (gfc_code_walker): Keep track of if_level and select_level.
        * invoke.texi: Document -Wdo-subscript.

2017-09-25  Janne Blomqvist  <jb@gcc.gnu.org>

        * trans.c (gfc_unlikely): Remove unnecessary fold_convert.
        (gfc_likely): Likewise.

2017-09-24  Thomas Koenig  <tkoenig@gcc.gnu.org>
            Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/80118
        * expr.c (gfc_get_full_arrayspec_from_expr): If there is
        no symtree, set array spec to NULL.

2017-09-23  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/82143
        * lang.opt: Add the options -fdefault-real-10 and -fdefault-real-16.
        Rename flag_default_real to flag_default_real_8.
        * invoke.texi: Add documentation.
        * module.c (use_iso_fortran_env_module): flag_default_real is renamed.
        * trans-types.c (gfc_init_kinds): Implement the flags
        -fdefault-real-10 and -fdefault-real-16. Make -fdefault-double-8 work
        without -fdefault-real-8.

2017-09-21  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/52832
        * match.c (gfc_match_associate): Before failing the association
        try again, allowing a proc pointer selector.

        PR fortran/80120
        PR fortran/81903
        PR fortran/82121
        * primary.c (gfc_match_varspec): Introduce 'tgt_expr', which
        points to the associate selector, if any. Go through selector
        references, after resolution for variables, to catch any full
        or section array references. If a class associate name does
        not have the same declared type as the selector, resolve the
        selector and copy the declared type to the associate name.
        Before throwing a no implicit type error, resolve all allowed
        selector expressions, and copy the resulting typespec.

        PR fortran/67543
        * resolve.c (resolve_assoc_var): Selector must cannot be the
        NULL expression and it must have a type.

        PR fortran/78152
        * resolve.c (resolve_symbol): Allow associate names to be
        coarrays.

2017-09-21  Cesar Philippidis  <cesar@codesourcery.com>

        * openmp.c (gfc_match_oacc_wait): Don't restrict wait directive
        arguments to constant integers.

2017-09-17  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82173
        * decl.c (gfc_get_pdt_instance): Use the component initializer
        expression for the default, rather than the parameter value.
        * resolve.c (resolve_pdt): New function.
        (resolve_symbol): Call it. Remove false error, prohibiting
        deferred type parameters for dummy arguments.

        PR fortran/60483
        * primary.c (gfc_match_varspec): If the type of an associate
        name is unknown and yet there is a match, try resolving the
        target expression and using its type.

2017-09-15  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82184
        trans-decl.c (gfc_trans_deferred_vars): Do not null the 'span'
        field if the symbol is either implicitly or explicitly saved.

2017-09-13  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82173
        * decl.c (match_char_kind): If the kind expression is
        parameterized, save it in saved_kind_expr and set kind = 0.
        (gfc_get_pdt_instance): Resolve and simplify before emitting
        error on expression kind. Insert a missing simplification after
        insertion of kind expressions.

2017-09-12  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82173
        PR fortran/82168
        * decl.c (variable_decl): Check pdt template components for
        appearance of KIND/LEN components in the type parameter name
        list, that components corresponding to type parameters have
        either KIND or LEN attributes and that KIND or LEN components
        are scalar. Copy the initializer to the parameter value.
        (gfc_get_pdt_instance): Add a label 'error_return' and follow
        it with repeated code, while replacing this code with a jump.
        Check if a parameter appears as a component in the template.
        Make sure that the parameter expressions are integer. Validate
        KIND expressions.
        (gfc_match_decl_type_spec): Search for pdt_types in the parent
        namespace since they are instantiated in the template ns.
        * expr.c (gfc_extract_int): Use a KIND parameter if it
        appears as a component expression.
        (gfc_check_init_expr): Allow expressions with the pdt_kind
        attribute.
        *primary.c (gfc_match_actual_arglist): Make sure that the first
        keyword argument is recognised when 'pdt' is set.

2017-09-10  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/34640
        PR fortran/40737
        PR fortran/55763
        PR fortran/57019
        PR fortran/57116

        * expr.c (is_subref_array): Add class pointer array dummies
        to the list of expressions that return true.
        * trans-array.c: Add SPAN_FIELD and update indices for
        subsequent fields.
        (gfc_conv_descriptor_span, gfc_conv_descriptor_span_get,
        gfc_conv_descriptor_span_set, is_pointer_array,
        get_array_span): New functions.
        (gfc_get_descriptor_offsets_for_info): New function to preserve
        API for access to descriptor fields for trans-types.c.
        (gfc_conv_scalarized_array_ref): If the expression is a subref
        array, make sure that info->descriptor is a descriptor type.
        Otherwise, if info->descriptor is a pointer array, set 'decl'
        and fix it if it is a component reference.
        (build_array_ref): Simplify handling of class array refs by
        passing the vptr to gfc_build_array_ref rather than generating
        the pointer arithmetic in this function.
        (gfc_conv_array_ref): As in gfc_conv_scalarized_array_ref, set
        'decl'.
        (gfc_array_allocate): Set the span field if this is a pointer
        array. Use the expr3 element size if it is available, so that
        the dynamic type element size is used.
        (gfc_conv_expr_descriptor): Set the span field for pointer
        assignments.
        * trans-array.h: Prototypes for gfc_conv_descriptor_span_get
        gfc_conv_descriptor_span_set and
        gfc_get_descriptor_offsets_for_info added.
        trans-decl.c (gfc_get_symbol_decl): If a non-class pointer
        array, mark the declaration as a GFC_DECL_PTR_ARRAY_P. Remove
        the setting of GFC_DECL_SPAN.
        (gfc_trans_deferred_vars): Set the span field to zero in thge
        originating scope.
        * trans-expr.c (gfc_conv_procedure_call): Do not use copy-in/
        copy-out to pass subref expressions to a pointer dummy.
        (gfc_trans_pointer_assignment): Remove code for setting of
        GFC_DECL_SPAN. Set the 'span' field for non-class pointers to
        class function results. Likewise for rank remap. In the case
        that the target is not a whole array, use the target array ref
        for remap and, since the 'start' indices are missing, set the
        lbounds to one, as required by the standard.
        * trans-intrinsic.c (conv_expr_ref_to_caf_ref): Pick up the
        'token' offset from the field decl in the descriptor.
        (conv_isocbinding_subroutine): Set the 'span' field.
        * trans-io.c (gfc_trans_transfer): Always scalarize pointer
        array io.
        * trans-stmt.c (trans_associate_var): Set the 'span' field.
        * trans-types.c (gfc_get_array_descriptor_base): Add the 'span'
        field to the array descriptor.
        (gfc_get_derived_type): Pointer array components are marked as
        GFC_DECL_PTR_ARRAY_P.
        (gfc_get_array_descr_info): Replaced API breaking code for
        descriptor offset calling gfc_get_descriptor_offsets_for_info.
        * trans.c (get_array_span): New function.
        (gfc_build_array_ref): Simplify by calling get_array_span and
        obtain 'span' if 'decl' or 'vptr' present.
        * trans.h : Rename DECL_LANG_FLAG_6, GFC_DECL_SUBREF_ARRAY_P,
        as GFC_DECL_PTR_ARRAY_P.

2017-09-09  Paul Thomas  <pault@gcc.gnu.org>

        * decl.c : Add decl_type_param_list, type_param_spec_list as
        static variables to hold PDT spec lists.
        (build_sym): Copy 'type_param_spec_list' to symbol spec_list.
        (build_struct): Copy the 'saved_kind_expr' to the component
        'kind_expr'. Check that KIND or LEN components appear in the
        decl_type_param_list. These should appear as symbols in the
        f2k_derived namespace. If the component is itself a PDT type,
        copy the decl_type_param_list to the component param_list.
        (gfc_match_kind_spec): If the KIND expression is parameterized
        set KIND to zero and store the expression in 'saved_kind_expr'.
        (insert_parameter_exprs): New function.
        (gfc_insert_kind_parameter_exprs): New function.
        (gfc_insert_parameter_exprs): New function.
        (gfc_get_pdt_instance): New function.
        (gfc_match_decl_type_spec): Match the decl_type_spec_list if it
        is present. If it is, call 'gfc_get_pdt_instance' to obtain the
        specific instance of the PDT.
        (match_attr_spec): Match KIND and LEN attributes. Check for the
        standard and for type/kind of the parameter. They are also not
        allowed outside a derived type definition.
        (gfc_match_data_decl): Null the decl_type_param_list and the
        type_param_spec_list on entry and free them on exit.
        (gfc_match_formal_arglist): If 'typeparam' is true, add the
        formal symbol to the f2k_derived namespace.
        (gfc_match_derived_decl): Register the decl_type_param_list
        if this is a PDT. If this is a type extension, gather up all
        the type parameters and put them in the right order.
        *dump-parse-tree.c (show_attr): Signal PDT templates and the
        parameter attributes.
        (show_components): Output parameter atrributes and component
        parameter list.
        (show_symbol): Show variable parameter lists.
        * expr.c (expr.c): Copy the expression parameter list.
        (gfc_is_constant_expr): Pass on symbols representing PDT
        parameters.
        (gfc_check_init_expr): Break on PDT KIND parameters and
        PDT parameter expressions.
        (gfc_check_assign): Assigning to KIND or LEN components is an
        error.
        (derived_parameter_expr): New function.
        (gfc_derived_parameter_expr): New function.
        (gfc_spec_list_type): New function.
        * gfortran.h : Add enum gfc_param_spec_type. Add the PDT attrs
        to the structure symbol_attr. Add the 'kind_expr' and
        'param_list' field to the gfc_component structure. Comment on
        the reuse of the gfc_actual_arglist structure as storage for
        type parameter spec lists. Add the new field 'spec_type' to
        this structure. Add 'param_list' fields to gfc_symbol and
        gfc_expr. Add prototypes for gfc_insert_kind_parameter_exprs,
        gfc_insert_parameter_exprs, gfc_add_kind, gfc_add_len,
        gfc_derived_parameter_expr and gfc_spec_list_type.
        * interface.c (gfc_compare_derived_types): Treat PDTs in the
        same way as sequence types.
        * match.c : Add variable 'type_param_spec_list'.
        (gfc_op2string, gfc_match_member_sep, gfc_match_label): Remove
        trailing whitespace.
        (match_derived_type_spec): Match PDTs and find specific
        instance.
        (gfc_match_type_spec): Remove more trailing whitespace.
        (gfc_match_allocate): Assumed or deferred parameters cannot
        appear here. Copy the type parameter spec list to the expr for
        the allocatable entity. Free 'type_param_spec_list'.
        (gfc_match_common, gfc_match_namelist, gfc_match_module): Still
        more trailing whitespace to remove.
        (gfc_match_type_is): Allow PDT typespecs.
        * match.h : Modify prototypes for gfc_match_formal_arglist and
        gfc_match_actual_arglist.
        * module.c (ab_attribute, mstring attr_bits): PDT attributes
        added.
        (mio_symbol_attribute): PDT attributes handled.
        (mio_component): Deal with 'kind_expr' field.
        (mio_full_f2k_derived): For PDT templates, transfer the formal
        namespace symroot to the f2k_derived namespace.
        *primary.c (match_keyword_arg, gfc_match_actual_arglist): Add
        modifications to handle PDT spec lists. These are flagged in
        both cases by new boolean arguments, whose prototype defaults
        are false.
        (gfc_match_structure_constructor, match_variable): Remove yet
        more trailing whitespace.
        * resolve.c (get_pdt_spec_expr, get_pdt_constructor): New
        functions.
        (resolve_structure_cons): If the constructor is a PDT template,
        call get_pdt_constructor to build it using the parameter lists
        and then get the specific instance of the PDT.
        (resolve_component): PDT strings need a hidden string length
        component like deferred characters.
        (resolve_symbol): Dummy PDTs cannot have deferred parameters.
        * symbol.c (gfc_add_kind, gfc_add_len): New functions.
        (free_components): Free 'kind_expr' and 'param_list' fields.
        (gfc_free_symbol): Free the 'param_list' field.
        (gfc_find_sym_tree): If the current state is a PDT template,
        look for the symtree in the f2k_derived namspaces.
        trans-array.c (structure_alloc_comps): Allocate and deallocate
        PDTs. Check dummy arguments for compliance of LEN parameters.
        Add the new functions to the preceeding enum.
        (gfc_allocate_pdt_comp, gfc_deallocate_pdt_comp and
        gfc_check_pdt_dummy): New functions calling above.
        * trans-array.h : Add prototypes for these functions.
        trans-decl.c (gfc_get_symbol_decl): Call gfc_defer_symbol_init
        as appropriate for PDT symbols.
        (gfc_trans_deferred_vars): Allocate/deallocate PDT entities as
        they come into and out of scope. Exclude pdt_types from being
        'gcc_unreachable'.
        (gfc_trans_subcomponent_assign): PDT array components must be
        handles as if they are allocatable.
        * trans-stmt.c (gfc_trans_allocate): Handle initialization of
        PDT entities.
        (gfc_trans_deallocate): Likewise.
        * trans-types.c (gfc_get_derived_type): PDT templates must not
        arrive here. PDT string components are handles as if deferred.
        Similarly, PDT arrays are treated as if allocatable. PDT
        strings are pointer types.
        * trans.c (gfc_deferred_strlen): Handle PDT strings in the same
        way as deferred characters.

2017-09-01  Jakub Jelinek  <jakub@redhat.com>

        PR c/81887
        * parse.c (decode_omp_directive): Use matchs instead of matcho for
        end ordered and ordered directives, except for ordered depend.  For
        -fopenmp-simd and ordered depend, reject the stmt.
        * trans-openmp.c (gfc_trans_omp_ordered): For -fopenmp-simd ignore
        threads clause and if simd clause isn't present, just translate the
        body.

2017-08-30  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * trans-types.c (gfc_init_kinds): Use opt_scalar_int_mode for
        the mode iterator.

2017-08-30  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * target-memory.c (size_integer): Use SCALAR_INT_TYPE_MODE.
        (size_logical): Likewise.

2017-08-30  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * trans-types.c (gfc_type_for_mode): Use is_a <scalar_int_mode>.

2017-08-30  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * trans-types.c (gfc_init_kinds): Use opt_scalar_float_mode
        and FOR_EACH_MODE_IN_CLASS.

2017-08-30  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * target-memory.c (size_float): Use SCALAR_FLOAT_TYPE_MODE
        instead of TYPE_MODE.

2017-08-30  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * trans-types.c (gfc_init_kinds): Use machine_mode instead of int
        for "mode".

2017-08-28  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/81770
        * expr.c (gfc_check_pointer_assign): Improve the check whether pointer
        may outlive pointer target.

2017-08-27  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/81974
        * frontend-passes (inline_matumul_assign):  Explicity
        set typespec for call to CONJG.

2017-08-21  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/81296
        * trans-io.c (get_dtio_proc): Add check for format label and set
        formatted flag accordingly. Reorganize the code a little.

2017-08-16  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/81116
        * frontend-passes.c (realloc_string_callback): If expression is a
        concatenation, also check for dependency.
        (constant_string_length): Check for presence of symtree.

2017-08-13  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * gfortran.texi: Document format of unformatted sequential files.

2017-08-11  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * invoke.texi:  Actually commit change about -Ofast.

2017-08-11  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/60355
        * resolve.c (resolve_symbol): Adjust (and reformat)
        comment.  Perform check if a BIND(C) is declared
        at module level regardless of whether it is typed
        implicitly or not.

2017-08-10  Fritz Reese <fritzoreese@gmail.com>

        * options.c (set_dec_flags): Only set legacy standards when value
        is not zero.

2017-08-10  Fritz Reese <fritzoreese@gmail.com>

        * options.c (set_dec_flags, gfc_post_options): Only set flag_d_lines
        with -fdec when not set by user.

2017-08-10  Fritz Reese <fritzoreese@gmail.com>

        * decl.c (attr_seen): New static variable.
        * decl.c (variable_decl): Match %FILL in STRUCTURE body.
        * gfortran.texi: Update documentation.

2017-08-08  Martin Liska  <mliska@suse.cz>

        * trans-types.c: Include header files.

2017-08-07  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/68829
        PR fortran/81701
        * options.c: Make -Ofast honor -fmax-stack-var-size.
        * invoke.texi: Document change.

2017-08-01  Thomas König  <tkoenig@gcc.gnu.org>

        PR fortran/79312
        * intrisic.c (gfc_convert_type_warn):  Only set typespec for
        empty array constructors which don't have it already.

2017-08-01  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/45435
        * lang.opt (fc-prototypes): Add option.
        * gfortran.h (gfc_typespec): Add interop_kind to struct.
        (gfc_dump_c_prototypes): Add prototype.
        * decl.c (gfc_match_kind_spec): Copy symbol used for kind to typespec.
        * parse.c (gfc_parse_file): Call gfc_dump_prototypes.
        * dump-parse-tree.c (gfc_dump_c_prototypes): New function.
        (type_return): New enum.
        (get_c_type_name): New function.
        (write_decl): New function.
        (write_type): New function.
        (write_variable): New function.
        (write_proc): New function.
        (write_interop_decl): New function.
        * invoke.texi: Document -fc-prototypes.

2017-08-01  Dominique d'Humieres  <dominiq@lps.ens.fr>

        PR fortran/53542
        * expr.c (gfc_check_init_expr): Use the renamed name.

2017-07-31  Jakub Jelinek  <jakub@redhat.com>

        * check.c (gfc_check_num_images): Fix a pasto.

2017-07-29  Jakub Jelinek  <jakub@redhat.com>

        * trans-decl.c (gfc_trans_use_stmts): Pass false as new argument to
        the imported_module_or_decl debug hook.

2017-07-28  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

        * resolve.c (find_reachable_labels): Adjust.

2017-07-25  Jakub Jelinek  <jakub@redhat.com>

        * ioparm.def: Use 1U << 31 instead of 1 << 31 as flags2 mask.

2017-07-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * dump-parse-tree.c (show_symbol):  Show binding label if present.

2017-07-24  Thomas Koenig  <tkoenig@gcc.gnu.org>
            Mikael Morin  <mikael@gcc.gnu.org>

        PR fortran/66102
        * fortran/trans-array.c (gfc_conv_resolve_dependencies):
        Break if dependency has been found.

2017-07-23  Alexander Monakov  <amonakov@ispras.ru>

        * interface.c (pair_cmp): Fix gfc_symbol comparison.  Adjust comment.

2017-07-18  Nathan Sidwell  <nathan@acm.org>

        * trans.c (gfc_build_array_ref): Use TYPE_MAX_VALUE.

2017-07-09  Dominique d'Humieres  <dominiq@lps.ens.fr>

        PR fortran/81341
        * class.c (class_array_ref_detected): Remove a redundant
        condition.

2017-07-06  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/70071
        * array.c (gfc_ref_dimen_size): Handle bad subscript triplets.

2017-07-03  Dominique d'Humieres  <dominiq@lps.ens.fr>

        PR fortran/79866
        * resolve.c (resolve_symbol): Fix typo.

2017-07-03  Dominique d'Humieres  <dominiq@lps.ens.fr>

        PR fortran/79843
        * symbol.c (check_conflict): Add missing "conflicts".

2017-06-29  Cesar Philippidis  <cesar@codesourcery.com>

        PR fortran/77765
        * openmp.c (gfc_match_oacc_routine): Check if proc_name exist before
        comparing the routine name against it.

2017-06-27  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/80164
        * trans-stmt.c (gfc_trans_call): If no code expr, use code->loc
        as warning/error locus.

2017-06-24  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/81160
        * arith.c (wprecision_int_real): Set return value before
        mpz_clear and then return after it.

2017-06-15  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/80983
        * trans-expr.c (gfc_conv_procedure_call): Deallocate the result of
        scalar allocatable procedure-pointer components.

2017-06-10  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/80988
        * frontend-passes.c (traverse_io_block):  Also
        check for variables occurring as indices multiple
        time in a single implied DO loop.

2017-06-05  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/70601
        * trans-expr.c (gfc_conv_procedure_call): Fix detection of allocatable
        function results.

2017-06-05  Nicolas Koenig  <koenigni@student.ethz.ch>

        PR fortran/35339
        * frontend-passes.c (traverse_io_block): New function.
        (simplify_io_impl_do): New function.
        (optimize_namespace): Invoke gfc_code_walker with
        simplify_io_impl_do.

2017-06-02  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/80918
        * openmp.c (resolve_omp_clauses): Fix a typo.

2017-05-30  David Malcolm  <dmalcolm@redhat.com>

        * error.c (gfc_format_decoder): Update for new bool and
        const char ** params.

2017-05-29  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/37131
        * frontend-passes.c (check_conjg_transpose_variable):
        Add prototype.
        (has_dimen_vector_ref):  Likewise
        (matmul_temp_args):  New function. Add prototype.
        (optimize_namespace):  Call matmul_temp_args.

2017-05-28  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * frontend-passes.c (matmul_lhs_realloc):  Correct
        allocation size for case A1B2.

2017-05-25  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * dump-parse-tree.c (show_expr):  Also replace
        with dumpfile for showing values for forgotten
        case.

2017-05-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * dump-parse-tree.c (show_expr):  Replace stdout
        with dumpfile for showing values.

2017-05-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/66094
        * frontend-passes.c (matrix_case):  Add A2TB2.
        (inline_limit_check):  Handle MATMUL(TRANSPOSE(A),B)
        (inline_matmul_assign):  Likewise.

2017-05-23  Thomas Schwinge  <thomas@codesourcery.com>

        * openmp.c (OACC_KERNELS_CLAUSES): Add "OMP_CLAUSE_NUM_GANGS",
        "OMP_CLAUSE_NUM_WORKERS", "OMP_CLAUSE_VECTOR_LENGTH".

2017-05-22  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/80766
        * resolve.c (resolve_fl_derived): Make sure that vtype symbols are
        properly resolved.

2017-05-19  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/80333
        * trans-io.c (nml_get_addr_expr): If we are dealing with class
        type data set tmp tree to get that address.
        (transfer_namelist_element): Set the array spec to point to the
        the class data.

2017-05-19  David Malcolm  <dmalcolm@redhat.com>

        PR fortran/79852
        * bbt.c (insert): Remove trailing exclamation mark from message.
        * decl.c (gfc_match_final_decl): Likewise.
        * dump-parse-tree.c (show_expr): Likewise.
        * module.c (gfc_use_module): Likewise.
        * primary.c (build_actual_constructor): Likewise.
        (gfc_convert_to_structure_constructor): Likewise.

2017-05-19  Thomas Schwinge  <thomas@codesourcery.com>

        * gfortran.h (enum gfc_omp_default_sharing): Add
        "OMP_DEFAULT_PRESENT".
        * dump-parse-tree.c (show_omp_clauses): Handle it.
        * openmp.c (gfc_match_omp_clauses): Likewise.
        * trans-openmp.c (gfc_trans_omp_clauses): Likewise.

2017-05-18  Fritz Reese <fritzoreese@gmail.com>

        PR fortran/79968
        * decl.c (match_attr_spec, gfc_match_automatic,
        gfc_match_static, gfc_match_structure_decl): Unify diagnostic
        errors regarding -fdec options.
        * io.c (match_dec_etag, match_dec_vtag, match_dec_ftag): Ditto.

2017-05-17  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/80741
        * trans-io.c (transfer_namelist_element): Change check from
        NULL_TREE to null_pointer_node.

2017-05-17  Fritz Reese <fritzoreese@gmail.com>

        PR fortran/80668
        * expr.c (component_initializer): Don't generate initializers for
        pointer components.
        * invoke.texi (-finit-derived): Document.

2017-05-16  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/80554
        * decl.c (build_sym): In a submodule allow overriding of host
        associated symbols from the ancestor module with a new
        declaration.

2017-05-15  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/80674
        * trans-stmt.c (gfc_trans_integer_select): Remove redundant condition.

2017-05-15  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/80752
        * expr.c (gfc_generate_initializer):  If type conversion fails,
        check for error and return NULL.

2017-05-14  Nicolas Koenig  <koenigni@student.ethz.ch>

        PR fortran/80442
        * array.c (gfc_ref_dimen_size): Simplify stride
        expression
        * data.c (gfc_advance_section): Simplify start,
        end and stride expressions
        (gfc_advance_section): Simplify start and end
        expressions
        (gfc_get_section_index): Simplify start expression

2017-05-13  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        * io.c (gfc_resolve_dt): Fix returns to bool type.

2017-05-11  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/78659
        * io.c (dtio_procs_present): Add new function to check for DTIO
        procedures relative to I/O statement READ or WRITE.
        (gfc_resolve_dt): Add namelist checks using the new function.
        * resolve.c (dtio_procs_present): Remove function and related
        namelist checks. (resolve_fl_namelist): Add check specific to
        Fortran 95 restriction on namelist objects.

2017-05-11  Nathan Sidwell  <nathan@acm.org>

        * trans-decl.c: Include dumpfile.h not tree-dump.h,

2017-05-09  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/79311
        * resolve.c (gfc_resolve_finalizers): Ensure that derived-type
        components have a their finalizers resolved, also if the superordinate
        type itself has a finalizer.

2017-05-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/79930
        * frontend-passes.c (matmul_to_var_expr): New function,
        add prototype.
        (matmul_to_var_code):  Likewise.
        (optimize_namespace):  Use them from gfc_code_walker.

2017-05-05  David Malcolm  <dmalcolm@redhat.com>

        * cpp.c (cb_cpp_error): Replace report_diagnostic
        with diagnostic_report_diagnostic.
        * error.c (gfc_warning): Likewise.
        (gfc_warning_now_at): Likewise.
        (gfc_warning_now): Likewise.
        (gfc_warning_internal): Likewise.
        (gfc_error_now): Likewise.
        (gfc_fatal_error): Likewise.
        (gfc_error_opt): Likewise.
        (gfc_internal_error): Likewise.

2017-05-01  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/37131
        * frontend-passes.c (inline_matmul_assign): Also check bounds
        for allocatable lhs and matrix-vector-multiplication.

2017-04-23  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/80484
        * io.c (format_lex): Check for '/' and set token to FMT_SLASH.
        (check_format): Move FMT_DT checking code to data_desc section.
        * module.c (gfc_match_use): Include the case of INTERFACE_DTIO.

2017-04-22  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/80121
        * trans-types.c (gfc_conv_procedure_call): Deallocate the components
        of allocatable intent(out) arguments.

2017-04-21  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/80392
        * trans-types.c (gfc_get_derived_type): Prevent an infinite loop when
        building a derived type that includes a procedure pointer component
        with a polymorphic result.

2017-04-17  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/80440
        * module.c (find_symtree_for_symbol): Delete.
        (read_module): Remove the call to the above.

2017-04-14  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/80361
        * class.c (generate_finalization_wrapper): Give the finalization wrapper
        the recursive attribute.

2017-04-10  Nicolas Koenig  <koenigni@student.ethz.ch>
            Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/69498
        * module.c (gfc_match_submodule): Add error
        if function is called in the wrong state.

2017-04-10  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/80046
        * expr.c (gfc_check_pointer_assign): Check if procedure pointer
        components in a pointer assignment need an explicit interface.

2017-03-18  Nicolas Koenig  <koenigni@student.ethz.ch>

        PR fortran/69498
        * symbol.c (gfc_delete_symtree): If there is a period in the name, ignore
        everything before it.

2017-03-28  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/78661
        * trans-io.c (transfer_namelist_element): Perform a polymorphic call
        to a DTIO procedure if necessary.

2017-03-25  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/80156
        PR fortran/79382
        * decl.c (access_attr_decl): Remove the error for an absent
        generic DTIO interface and ensure that symbol has the flavor
        FL_PROCEDURE.

2017-03-22  Dominique d'Humieres  <dominiq@lps.ens.fr>

        PR fortran/79838
        * module.c: Remove trailing period.

2017-03-22  Dominique d'Humieres  <dominiq@lps.ens.fr>

        PR fortran/79602
        * decl.c: Replace '%s' with %qs.
        * expr.c: Likewise.
        * interface.c: Likewise.
        * match.c: Likewise.
        * primary.c: Likewise.
        * resolve.c: Likewise.

        PR fortran/79844
        PR fortran/80011
        * io.c: Remove trailing spaces.
        * match.c: Likewise.
        * openmp.c: Likewise.
        * resolve.c: Likewise.
        * trans-intrinsic.c: Likewise.

        PR fortran/79853
        * expr.c: Remove a double spaces.

        PR fortran/79859
        * primary.c: Remove spurious quotes around %qs.

2017-03-22  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/80142
        * frontend-passes.c (combine_array_constructor): Take
        location of new expression from constructor expression instead
        of constructor.

2017-03-20  Nicolas Koenig  <koenigni@student.ethz.ch>

        PR fortran/39239
        * symbol.c (check_conflict): Report an error if an EQUIVALENCE
        object is BIND(C)

2017-03-18  Nicolas Koenig  <koenigni@student.ethz.ch>

        PR fortran/69498
        * decl.c (add_hidden_procptr_result): Fixed Refs count of the
        created "ppr@" symbol.

2017-03-18  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/79676
        * module.c (mio_symbol_attribute): Remove reset of the flag
        'no_module_procedures'.
        (check_for_module_procedures): New function. Move declaration
        of 'no_module_procedures' to above it.
        (gfc_dump_module): Traverse namespace calling new function.

2017-03-18  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/71838
        * symbol.c (check_conflict): A dummy procedure in a submodule,
        module procedure is not an error.
        (gfc_add_flavor): Ditto.

2017-03-17  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/79841
        * openmp.c (check_symbol_not_pointer): Adjust diagnostics.

2017-03-16  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/80010
        * parse.c (gfc_ascii_statement): Use !$ACC for ST_OACC_ATOMIC
        and ST_OACC_END_ATOMIC, instead of !ACC.
        * trans-decl.c (finish_oacc_declare): Use !$ACC instead of $!ACC.
        * openmp.c (gfc_match_oacc_declare, gfc_match_oacc_wait,
        gfc_resolve_oacc_declare): Likewise.

        PR fortran/79886
        * error.c (gfc_format_decoder): Rename plus argument to set_locus,
        remove ATTRIBUTE_UNUSED from all arguments, call default_tree_printer
        if not a Fortran specific spec.
        * trans-io.c: Include options.h.
        (gfc_build_st_parameter): Temporarily disable -Wpadded around layout
        of artificial IO data structures.

2017-03-15  David Malcolm  <dmalcolm@redhat.com>

        PR fortran/79860
        * resolve.c (resolve_contained_fntype): Make error messages more
        amenable to translation.

2017-03-06  Richard Biener  <rguenther@suse.de>

        PR fortran/79894
        * trans.c (gfc_add_modify_loc): Weaken assert.

2017-03-05  Andre Vehreschild  <vehre@gcc.gnu.org>,
            Alessandro Fanfarillo  <fanfarillo.gcc@gmail.com>

        * check.c (positive_check): Add new function checking constant for
        being greater then zero.
        (gfc_check_image_status): Add checking of image_status arguments.
        (gfc_check_failed_or_stopped_images): Same but for failed_- and
        stopped_images function.
        * dump-parse-tree.c (show_code_node): Added output of FAIL IMAGE.
        * gfortran.h (enum gfc_statement): Added FAIL_IMAGE_ST.
        (enum gfc_isym_id): Added new intrinsic symbols.
        (enum gfc_exec_op): Added EXEC_FAIL_IMAGE.
        * gfortran.texi: Added description for the new API functions. Updated
        coverage of gfortran of TS18508.
        * intrinsic.c (add_functions): Added symbols to resolve new intrinsic
        functions.
        * intrinsic.h: Added prototypes.
        * iresolve.c (gfc_resolve_failed_images): Resolve the failed_images
        intrinsic.
        (gfc_resolve_image_status): Same for image_status.
        (gfc_resolve_stopped_images): Same for stopped_images.
        * libgfortran.h: Added prototypes.
        * match.c (gfc_match_if): Added matching of FAIL IMAGE statement.
        (gfc_match_fail_image): Match a FAIL IMAGE statement.
        * match.h: Added prototype.
        * parse.c (decode_statement): Added matching for FAIL IMAGE.
        (next_statement): Same.
        (gfc_ascii_statement): Same.
        * resolve.c: Same.
        * simplify.c (gfc_simplify_failed_or_stopped_images): For COARRAY=
        single a constant result can be returne.d
        (gfc_simplify_image_status): For COARRAY=single the result is constant.
        * st.c (gfc_free_statement): Added FAIL_IMAGE handling.
        * trans-decl.c (gfc_build_builtin_function_decls): Added decls of the
        new intrinsics.
        * trans-expr.c (gfc_conv_procedure_call): This is first time all
        arguments of a function are optional, which is now handled here
        correctly.
        * trans-intrinsic.c (conv_intrinsic_image_status): Translate
        image_status.
        (gfc_conv_intrinsic_function): Add support for image_status.
        (gfc_is_intrinsic_libcall): Add support for the remaining new
        intrinsics.
        * trans-stmt.c (gfc_trans_fail_image): Trans a fail image.
        * trans-stmt.h: Add the prototype for the above.
        * trans.c (trans_code): Dispatch for fail_image.
        * trans.h: Add the trees for the new intrinsics.

2017-03-03  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/79841
        * openmp.c (check_symbol_not_pointer): Adjust diagnostic.

2017-02-28  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/79739
        * resolve.c (resolve_fl_procedure): Deal with the case where
        'submodule_name' is NULL so that gfc_error does not ICE.
        Reformat the error message to make it more consistent.

2017-02-28  Jakub Jelinek  <jakub@redhat.com>

        * parse.c (parse_critical_block): Use cond ? G_("...") : G_("...")
        instead of just cond ? "..." : "...".
        * scanner.c (gfc_next_char_literal): Likewise.
        * match.c (match_exit_cycle): Likewise.

2017-02-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/51119
        * options.c (gfc_post_options): Set default limit for matmul
        inlining to 30.
        * invoke.texi: Document change.

2017-02-25  Dominique d'Humieres  <dominiq@lps.ens.fr>

        PR fortran/79601
        * interface.c (check_dtio_arg_TKR_intent): Change 'intent'
        to 'INTENT'.

2017-02-25  Dominique d'Humieres  <dominiq@lps.ens.fr>

        PR fortran/79597
        * interface.c (gfc_match_end_interface): Remove spurious comma
        and space, replace 'got %s' with 'got %qs'.

2017-02-20  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/79599
        * interface.c (check_dtio_arg_TKR_intent): Supply 'must'
        missing from error message.

2017-02-20  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/79523
        * interface.c (gfc_find_typebound_dtio_proc): Guard test for
        flavor attribute by checking that symbol is resolved.

2017-02-16  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/79382
        * decl.c (access_attr_decl): Test for presence of generic DTIO
        interface and emit error if not present.

2017-02-20  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/79434
        * parse.c (check_component, parse_union): Whitespace.
        (set_syms_host_assoc): For a derived type, check if the module
        in which it was declared is one of the submodule ancestors. If
        it is, make the components public. Otherwise, reset attribute
        'host_assoc' and set 'use-assoc' so that encapsulation is
        preserved.

2017-02-19  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/79447
        * decl.c (gfc_set_constant_character_len): Whitespace.
        (gfc_match_end): Catch case where a procedure is contained in
        a module procedure and ensure that 'end procedure' is the
        correct termination.

2017-02-19  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/79402
        * resolve.c (fixup_unique_dummy): New function.
        (gfc_resolve_expr): Call it for dummy variables with a unique
        symtree name.

2017-02-19  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/79229
        * trans-expr.c (gfc_trans_assignment_1): Deref indirect refs when
        compiling with -fcheck=mem to check the pointer and not the data.

2017-02-19  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/79335
        * trans-array.c (duplicate_allocatable_coarray): Ensure attributes
        passed are properly initialized.
        (structure_alloc_comps): Same.
        * trans-expr.c (gfc_trans_structure_assign): Same.

2017-02-13  Jakub Jelinek  <jakub@redhat.com>

        * trans-expr.c (gfc_conv_substring): Add missing space in diagnostics.

2017-02-12  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/65542
        * intrinsic.c (gfc_intrinsic_func_interface):  Return an error
        for -std=f95 for disallowed transformational functions in
        initialization expressions.

2017-02-09  Cesar Philippidis  <cesar@codesourcery.com>
            Joseph Myers  <joseph@codesourcery.com>

        * openmp.c (resolve_omp_clauses): Error on directives
        containing both tile and collapse clauses.
        (resolve_oacc_loop_blocks): Represent '*' tile arguments as zero.
        * trans-openmp.c (gfc_trans_omp_do): Lower tiled loops like
        collapsed loops.

2017-02-07  Steven G. Kargl  <kargl@gcc.gnu.org>

        * trans-types.c (gfc_get_int_kind_from_width_isofortranen):  Choose
        REAL type with the widest precision if two (or more) have the same
        storage size.

2017-02-05  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/79344
        * trans-stmt.c (gfc_trans_allocate): Only deallocate the components of
        the temporary, when a new object was created for the temporary.  Not
        when it is just an alias to an existing object.

2017-02-05  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/79335
        * trans-decl.c (generate_coarray_sym_init): Retrieve the symbol's
        attributes before using them.

2017-02-05  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/78958
        * trans-stmt.c (gfc_trans_allocate): Add the multiplying the _len
        component of unlimited polymorphic objects when source-allocating.

2017-02-05  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/79230
        * trans-array.c (structure_alloc_comps): Ignore pointer components when
        freeing structures.

2017-01-25  Maxim Ostapenko  <m.ostapenko@samsung.com>

        PR lto/79061
        * f95-lang.c (gfc_create_decls): Include stringpool.h.
        Pass main_input_filename to build_translation_unit_decl.

2017-01-23  Thomas Koenig  <tkoenig@netcologne.de>

        * arith.c (arith_power):  If simplifying integer power expression
        to zero, warn if -Winteger-division is given.

2017-01-22  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/79154
        * parse.c (matchs, matcho, matchds, matchdo): Replace return st;
        with { ret = st; goto finish; }.
        (decode_omp_directive): Allow declare simd, declare target and
        simd directives in PURE/ELEMENTAL procedures.  Only call
        gfc_unset_implicit_pure on successful match of other procedures.

2017-01-21  Gerald Pfeifer  <gerald@pfeifer.com>

        * gfc-internals.texi (Symbol Versioning): Change references
        to www.akkadia.org to https.

2017-01-21  Jakub Jelinek  <jakub@redhat.com>

        * gfortran.h (gfc_extract_int): Change return type to bool.  Add
        int argument with = 0.
        * decl.c (gfc_match_kind_spec): Adjust gfc_extract_int caller, pass
        1 as new last argument to it, don't emit gfc_error.
        (match_char_kind): Likewise.
        (gfc_match_decl_type_spec): Use gfc_get_string ("%s", x) instead of
        gfc_get_string (x).
        (gfc_match_derived_decl, match_binding_attributes): Likewise.
        (gfc_match_structure_decl): Don't sprintf back to name, call
        get_struct_decl directly with gfc_dt_upper_string (name) result.
        * trans-stmt.c (gfc_trans_allocate): Use gfc_get_string ("%s", x)
        instead of gfc_get_string (x).
        * module.c (gfc_dt_lower_string, gfc_dt_upper_string,
        gfc_match_use, gfc_match_submodule, find_true_name, mio_pool_string,
        mio_symtree_ref, mio_expr, mio_omp_udr_expr, load_generic_interfaces,
        load_omp_udrs, load_needed, read_module, dump_module,
        create_intrinsic_function, import_iso_c_binding_module,
        create_int_parameter, create_int_parameter_array, create_derived_type,
        use_iso_fortran_env_module): Likewise.
        * error.c (gfc_diagnostic_starter, gfc_diagnostic_start_span): Use
        pp_verbatim (context->printer, "%s", x) instead of
        pp_verbatim (context->printer, x).
        * match.c (gfc_match_small_int): Adjust gfc_extract_int caller, pass
        1 as new last argument to it, don't emit gfc_error.
        (gfc_match_small_int_expr): Likewise.
        * iresolve.c (gfc_get_string): Optimize format "%s" case.
        (resolve_bound): Use gfc_get_string ("%s", x) instead of
        gfc_get_string (x).
        (resolve_transformational): Formatting fix.
        (gfc_resolve_char_achar): Change name argument to bool is_achar,
        use a single format string and if is_achar add "a" before "char".
        (gfc_resolve_achar, gfc_resolve_char): Adjust callers.
        * expr.c (gfc_extract_int): Change return type to bool, return true
        if some error occurred.  Add REPORT_ERROR argument, if non-zero
        call either gfc_error or gfc_error_now depending on its sign.
        * arith.c (arith_power): Adjust gfc_extract_int caller.
        * symbol.c (gfc_add_component): Use gfc_get_string ("%s", x) instead
        of gfc_get_string (x).
        (gfc_new_symtree, gfc_delete_symtree, gfc_get_uop, gfc_new_symbol,
        gfc_get_gsymbol, generate_isocbinding_symbol): Likewise.
        * openmp.c (gfc_match_omp_clauses): Adjust gfc_extract_int caller, pass
        -1 as new last argument to it, don't emit gfc_error_now.
        (gfc_match_omp_declare_reduction): Use gfc_get_string ("%s", x)
        instead of gfc_get_string (x).
        * check.c (kind_check): Adjust gfc_extract_int caller.
        * intrinsic.c (add_sym, find_sym, make_alias): Use
        gfc_get_string ("%s", x) instead of gfc_get_string (x).
        * simplify.c (get_kind, gfc_simplify_btest, gfc_simplify_maskr,
        gfc_simplify_maskl, gfc_simplify_poppar, gfc_simplify_repeat,
        gfc_simplify_selected_int_kind, gfc_simplify_selected_real_kind):
        Adjust gfc_extract_int callers.
        * trans-decl.c (gfc_find_module): Use gfc_get_string ("%s", x)
        instead of gfc_get_string (x).
        * matchexp.c (expression_syntax): Add const.
        * primary.c (match_kind_param, match_hollerith_constant,
        match_string_constant): Adjust gfc_extract_int callers.
        (match_keyword_arg): Use gfc_get_string ("%s", x) instead of
        gfc_get_string (x).
        * frontend-passes.c (optimize_minmaxloc): Likewise.

2017-01-19  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/70696
        * trans-decl.c (gfc_build_qualified_array): Add static decl to parent
        function only, when the decl-context is not the translation unit.

2017-01-18  Louis Krupp  <louis.krupp@zoho.com>

        PR fortran/50069
        PR fortran/55086
        * trans-expr.c (gfc_conv_variable): Don't treat temporary variables
        as function arguments.
        * trans-stmt.c (forall_make_variable_temp,
        generate_loop_for_temp_to_lhs, gfc_trans_assign_need_temp,
        gfc_trans_forall_1): Don't adjust offset of forall temporary
        for array sections, make forall temporaries work for substring
        expressions, improve test coverage by adding -ftest-forall-temp
        option to request usage of temporary array in forall code.
        * lang.opt: Add -ftest-forall-temp option.
        * invoke.texi: Add -ftest-forall-temp option.

2017-01-18  Andre Vehreschild  <vehre@gcc.gnu.org>

        * primary.c (caf_variable_attr): Improve figuring whether the current
        component is the last one refed.
        * trans-stmt.c (gfc_trans_allocate): Do not generate sync_all calls
        when allocating pointer or allocatable components.

2017-01-18  Andre Vehreschild  <vehre@gcc.gnu.org>

        * gfortran.texi: Add missing parameters to caf-API functions.  Correct
        typos and clarify some descriptions.

2017-01-18  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/70696
        Missed some cases, here they are:
        * trans-decl.c (gfc_build_qualified_array): Add static tokens to the
        parent function's scope.
        * trans-expr.c (gfc_get_tree_for_caf_expr): Shorten code.  Remove
        unnecessary assert.

2017-01-13  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/70697
        * resolve.c (resolve_lock_unlock_event): Resolve the expression for
        event's until_count.

2017-01-13  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/70696
        * trans-expr.c (gfc_get_tree_for_caf_expr): Ensure the backend_decl
        is valid before accessing it.

2017-01-09  Jakub Jelinek  <jakub@redhat.com>

        PR translation/79019
        PR translation/79020
        * decl.c (attr_decl1): Fix spelling in translatable string.
        * intrinsic.texi: Fix spelling - invokation -> invocation.
        * lang.opt (faggressive-function-elimination, gfc_convert): Fix
        typos in descriptions.
        * openmp.c (resolve_omp_clauses): Add missing whitespace to
        translatable strings.

2017-01-08  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/78913
        PR middle-end/77708
        * trans-common.c (build_equiv_decl): Increase buffer size to avoid
        truncation for any argument.
        * trans-types.c (gfc_build_logical_type): Same.

2017-01-07  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/78781
        PR fortran/78935
        * expr.c (gfc_check_pointer_assign): Return the same error message for
        rewritten coarray pointer assignments like for plain ones.
        * gfortran.h: Change prototype.
        * primary.c (caf_variable_attr): Set attributes used ones only only
        ones.  Add setting of pointer_comp attribute.
        (gfc_caf_attr): Add setting of pointer_comp attribute.
        * trans-array.c (gfc_array_allocate): Add flag that the component to
        allocate is not an ultimate coarray component.  Add allocation of
        pointer arrays.
        (structure_alloc_comps): Extend nullify to treat pointer components in
        coarrays correctly.  Restructure nullify to remove redundant code.
        (gfc_nullify_alloc_comp): Allow setting caf_mode flags.
        * trans-array.h: Change prototype of gfc_nullify_alloc_comp ().
        * trans-decl.c (generate_coarray_sym_init): Call nullify_alloc_comp for
        derived type coarrays with pointer components.
        * trans-expr.c (gfc_trans_structure_assign): Also treat pointer
        components.
        (trans_caf_token_assign): Handle assignment of token of scalar pointer
        components.
        (gfc_trans_pointer_assignment): Call above routine.
        * trans-intrinsic.c (conv_expr_ref_to_caf_ref): Add treating pointer
        components.
        (gfc_conv_intrinsic_caf_get): Likewise.
        (conv_caf_send): Likewise.
        * trans-stmt.c (gfc_trans_allocate): After allocating a derived type in
        a coarray pre-register the tokens.
        (gfc_trans_deallocate): Simply determining the coarray type (scalar or
        array) and deregistering it correctly.
        * trans-types.c (gfc_typenode_for_spec): Replace in_coarray flag by the
        actual codim to allow lookup of array types in the cache.
        (gfc_build_array_type): Likewise.
        (gfc_get_array_descriptor_base): Likewise.
        (gfc_get_array_type_bounds): Likewise.
        (gfc_get_derived_type): Likewise.
        * trans-types.h: Likewise.
        * trans.c (gfc_deallocate_with_status): Enable deregistering of all kind
        of coarray components.
        (gfc_deallocate_scalar_with_status): Use free() in fcoarray_single mode
        instead of caf_deregister.

2017-01-06  Jakub Jelinek  <jakub@redhat.com>

        * simplify.c (simplify_transformation_to_array): Use
        GCC_DIAGNOSTIC_PUSH_IGNORED and GCC_DIAGNOSTIC_POP instead of
        #pragma GCC diagnostic {push,ignored,pop}.

2017-01-06  Alexandre Oliva <aoliva@redhat.com>

        * simplify.c (simplify_transformation_to_array): Silence
        array bounds warning.  Fix whitespace.

2017-01-04  Alexandre Oliva <aoliva@redhat.com>

        * module.c (load_omp_udrs): Initialize name.

2017-01-02  Janne Blomqvist  <jb@gcc.gnu.org>

        PR fortran/78534
        * trans-expr.c (gfc_trans_string_copy): Rework string copy
        algorithm to avoid -Wstringop-overflow warning.

2017-01-01  Jakub Jelinek  <jakub@redhat.com>

        Update copyright years.

        * gfortranspec.c (lang_specific_driver): Update copyright notice
        dates.
        * gfc-internals.texi: Bump @copying's copyright year.
        * gfortran.texi: Ditto.
        * intrinsic.texi: Ditto.
        * invoke.texi: Ditto.
\f
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