gfortran.texi: Mention that asynchronous I/O does not work on systems which lack...

[gcc.git] / gcc / fortran / ChangeLog

2018-08-22  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * gfortran.texi: Mention that asynchronous I/O does
        not work on systems which lack condition variables, such
        as AIX.

2018-08-22  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/86935
        * match.c (gfc_match_associate): Improve diagnostics for the ASSOCIATE
        statement.

2018-08-22  Andrew Benson  <abensonca@gmail.com>

        * module.c (load_generic_interfaces): Move call to find_symbol()
        so that only occurs if actually needed.

2018-08-22  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/86888
        * decl.c (gfc_match_data_decl): Allow allocatable components of
        indirectly recursive type.
        * resolve.c (resolve_component): Remove two errors messages ...
        (resolve_fl_derived): ... and replace them by a new one.

2018-08-21  Janne Blomqvist  <jb@gcc.gnu.org>

        * trans-intrinsic.c (gfc_conv_intrinsic_minmax): Use
        MAX_EXPR/MIN_EXPR unconditionally for real arguments.
        * gfortran.texi (Compiler Characteristics): Document MAX/MIN
        behavior wrt NaN.

2018-08-21  Nicolas Koenig  <koenigni@gcc.gnu.org>
        Thomas Koenig <tkoenig@gcc.gnu.org>

        PR fortran/25829
        * gfortran.texi: Add description of asynchronous I/O.
        * trans-decl.c (gfc_finish_var_decl): Treat asynchronous variables
        as volatile.
        * trans-io.c (gfc_build_io_library_fndecls): Rename st_wait to
        st_wait_async and change argument spec from ".X" to ".w".
        (gfc_trans_wait): Pass ID argument via reference.

2018-08-16  Nathan Sidwell  <nathan@acm.org>

        * cpp.c (dump_macro): Use cpp_user_macro_p.

2018-08-14  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/86116
        * interface.c (compare_type): Remove a CLASS/TYPE check.
        (compare_type_characteristics): New function that behaves like the old
        'compare_type'.
        (gfc_check_dummy_characteristics, gfc_check_result_characteristics):
        Call 'compare_type_characteristics' instead of 'compare_type'.

2018-08-12  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/66679
        * trans-intrinsic.c (gfc_conv_intrinsic_transfer): Class array
        elements are returned as references to the data element. Get
        the class expression by stripping back the references. Use this
        for the element size.

2018-08-12  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/86906
        * resolve.c (resolve_fl_variable_derived): Check if the derived
        type is use associated before checking for the host association
        error.

2018-08-10  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/57160
        * invoke.texi (frontend-optimize): Mention short-circuiting.
        * options.c (gfc_post_options): Disable -ffrontend-optimize with -Og.
        * resolve.c (resolve_operator): Warn about short-circuiting only with
        -ffrontend-optimize.
        * trans-expr.c (gfc_conv_expr_op): Use short-circuiting operators only
        with -ffrontend-optimize. Without that flag, make sure that both
        operands are evaluated.

2018-08-08  Nathan Sidwell  <nathan@acm.org>

        * cpp.c (cb_file_change): Use linemap_included_from.

2018-08-07  Cesar Philippidis  <cesar@codesourcery.com>

        * trans-stmt.h: Remove stale reference to trans-openacc.c.

2018-08-04  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/45521
        * interface.c (gfc_compare_interfaces): Apply additional
        distinguishability criteria of F08 to operator interfaces.

2018-07-31  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        Revert 'AsyncI/O patch committed'
        2018-07-25  Nicolas Koenig  <koenigni@gcc.gnu.org>
                Thomas Koenig <tkoenig@gcc.gnu.org>

        PR fortran/25829
        * gfortran.texi: Add description of asynchronous I/O.
        * trans-decl.c (gfc_finish_var_decl): Treat asynchronous variables
        as volatile.
        * trans-io.c (gfc_build_io_library_fndecls): Rename st_wait to
        st_wait_async and change argument spec from ".X" to ".w".
        (gfc_trans_wait): Pass ID argument via reference.

2018-07-25  Nicolas Koenig  <koenigni@gcc.gnu.org>
        Thomas Koenig <tkoenig@gcc.gnu.org>

        PR fortran/25829
        * gfortran.texi: Add description of asynchronous I/O.
        * trans-decl.c (gfc_finish_var_decl): Treat asynchronous variables
        as volatile.
        * trans-io.c (gfc_build_io_library_fndecls): Rename st_wait to
        st_wait_async and change argument spec from ".X" to ".w".
        (gfc_trans_wait): Pass ID argument via reference.

2018-07-20  Martin Sebor  <msebor@redhat.com>

        PR middle-end/82063
        * gfortran.h (gfc_handle_option): Change function argument
        to HOST_WIDE_INT.
        * options.c (gfc_handle_option): Same.

2018-07-20  Andrew Benson  <abenson@carnegiescience.edu>

        * gfortran.h (gfc_symbol): Add pointer to next derived type.
        (gfc_dt_list, gfc_get_dt_list): Remove.
        (gfc_namespace): Replace gfc_dt_list with gfc_symbol.
        * parse.c (resolve_all_program_units): Replace gfc_free_dt_list() with
        simple nullification of gfc_derived_types.
        * resolve.c (resolve_global_procedure): Replace gfc_dt_list with
        gfc_symbol.
        (add_dt_to_dt_list): Change derived type linked list insertion to
        utilize dt_next pointers in gfc_symbol.
        * symbol.c (gfc_new_symbol, gfc_free_dt_list, gfc_symbol_done2)
        (get_iso_c_binding_dt, generate_isocbinding_symbol): Remove
        gfc_free_dt_list as gfc_dt_list is obsoleted. Change derived type
        linked list search/insertion to utilize dt_next pointers in gfc_symbol.
        * trans-types.c (gfc_get_derived_type): Change derived type linked
        list search to utilize dt_next pointers in gfc_symbol.

2018-07-19  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * trans-intrinsic.c: (gfc_conv_intrinsic_minmax): Emit MIN_MAX_EXPR
        or IFN_FMIN/FMAX sequence to calculate the min/max when possible.

2018-07-18  Janus Weil  <janus@gcc.gnu.org>
            Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/85599
        * dump-parse-tree.c (show_attr): Add handling of implicit_pure.
        * frontend-passes.c (do_warn_function_elimination): Do not warn for
        pure functions.
        * gfortran.h: Add prototypes for gfc_pure_function and
        gfc_implicit_pure_function.
        * gfortran.texi: Add chapter on evaluation of logical expressions.
        * invoke.texi: Mention that -Wfunction-elimination is implied
        by -Wextra.
        * lang.opt: Make -Wextra imply -Wfunction-elimination.
        * resolve.c (pure_function): Rename to gfc_pure_function.
        (gfc_implicit_pure_function): New function.
        (check_pure_function): Use it here.
        (impure_function_callback): New function.
        (resolve_operator): Call it via gfc_expr_walker.

2018-07-16  Fritz Reese  <fritzoreese@gmail.com>

        PR fortran/83184
        * decl.c (match_old_style_init): Initialize locus of variable expr when
        creating a data variable.
        (match_clist_expr): Verify array is explicit shape/size before
        attempting to allocate constant array constructor.

2018-07-16  Fritz Reese  <fritzoreese@gmail.com>

        PR fortran/86417
        * module.c (mio_component): Set component->loc when loading from module.

2018-07-10  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/86421
        * module.c (omp_declare_simd_clauses): Add LINEAR with _REF, _VAL and
        _UVAL suffixes.
        (mio_omp_declare_simd): Save and restore ref, val and uval modifiers
        on linear clauses.  Initialize n->where to gfc_current_locus.

2018-07-05  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/86408
        * resolve.c.c (resolve_contained_fntype): Reference to C418 is
        in F2008 and not F2003.
        (resolve_function): Ditto in error message. Also, exclude
        deferred character length results from the error.

2018-07-05  Fritz Reese  <fritzoreese@gmail.com>

        PR fortran/83183
        PR fortran/86325
        * expr.c (class_allocatable, class_pointer, comp_allocatable,
        comp_pointer): New helpers.
        (component_initializer): Generate EXPR_NULL for allocatable or pointer
        components. Do not generate initializers for components within BT_CLASS.
        Do not assign to comp->initializer.
        (gfc_generate_initializer): Use new helpers; move code to generate
        EXPR_NULL for class allocatable components into component_initializer().

2018-07-04  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/82009
        * trans-decl.c (gfc_process_block_locals): Delete assert and set
        saved_local_decls = NULL_TREE.

2018-07-02  Richard Biener  <rguenther@suse.de>

        PR lto/86321
        * trans-types.c (gfc_get_array_type_bounds): Unshare TYPE_FIELDs
        for the distinct type copy.

2018-07-02  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82969
        PR fortran/86242
        * trans-array.c (structure_alloc_comps): Do not explicitly copy
        procedure pointer components.

2018-07-02  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/45305
        * expr.c : Add a prototype for scalarize_intrinsic_call.
        (gfc_simplify_expr): Use scalarize_intrinsic_call for elemental
        intrinsic function calls.
        (scalarize_intrinsic_call): Add 'init_flag' argument. Check if
        the expression or any of the actual argument expressions are
        NULL. Before calling gfc_check_init_expr, check 'init_flag'.
        Only simplify the scalarized expressions if there are no errors
        on the stack.
        (gfc_check_init_expr): Set 'init_flag' true in the call to
        scalarize_intrinsic_call.

2018-06-28  Fritz Reese  <fritzoreese@gmail.com>

        PR fortran/82865
        * decl.c (gfc_match_type): Refactor and check for PDT declarations.

2018-06-28  Martin Liska  <mliska@suse.cz>

        * gfortranspec.c: Include opt-suggestions.h.

2018-06-25  Fritz Reese  <fritzoreese@gmail.com>

        PR fortran/82972
        PR fortran/83088
        PR fortran/85851
        * expr.c (component_initializer): Assign init expr to c->initializer.
        (generate_isocbinding_initializer): New.
        (gfc_generate_initializer): Call generate_isocbinding_initializer to
        generate initializers for c_ptr and c_funptr with -finit-derived.

2018-06-23  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/85983
        * interface.c (check_dtio_interface1): Delete assert.

2018-06-22  Paul Thomas  <pault@gcc.gnu.org>
            Rainer Orth  <ro@gcc.gnu.org>

        PR fortran/86281
        * resolve.c (resolve_contained_fntype): Check for the charlen
        before testing the length.

2018-06-21  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/49630
        * resolve.c (resolve_contained_fntype): Change standard ref.
        from F95 to F2003: C418. Correct a spelling error in a comment.
        It is an error for an abstract interface to have an assumed
        character length result.
        * trans-expr.c (gfc_conv_procedure_call): Likewise change the
        standard reference.

2018-06-21  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/83118
        * resolve.c (resolve_ordinary_assign): Force the creation of a
        vtable for assignment of non-polymorphic expressions to an
        unlimited polymorphic object.
        * trans-array.c (gfc_alloc_allocatable_for_assignment): Use the
        size of the rhs type for such assignments. Set the dtype, _len
        and vptrs appropriately.
        * trans-expr.c (gfc_trans_assignment): Force the use of the
        _copy function for these assignments.

2018-06-20  Chung-Lin Tang <cltang@codesourcery.com>
            Thomas Schwinge <thomas@codesourcery.com>
            Cesar Philippidis  <cesar@codesourcery.com>

        * gfortran.h (gfc_omp_clauses): Add unsigned if_present, finalize
        bitfields.
        * openmp.c (enum omp_mask2): Remove OMP_CLAUSE_PRESENT_OR_*. Add
        OMP_CLAUSE_{IF_PRESENT,FINALIZE}.
        (gfc_match_omp_clauses): Update handling of copy, copyin, copyout,
        create, deviceptr, present_of_*. Add support for finalize and
        if_present.
        (OACC_PARALLEL_CLAUSES): Remove PRESENT_OR_* clauses.
        (OACC_KERNELS_CLAUSES): Likewise.
        (OACC_DATA_CLAUSES): Likewise.
        (OACC_DECLARE_CLAUSES): Likewise.
        (OACC_UPDATE_CLAUSES): Add IF_PRESENT clause.
        (OACC_ENTER_DATA_CLAUSES): Remove PRESENT_OR_* clauses.
        (OACC_EXIT_DATA_CLAUSES): Add FINALIZE clause.
        (gfc_match_oacc_declare): Update to OpenACC 2.5 semantics.
        * trans-openmp.c (gfc_trans_omp_clauses): Add support for IF_PRESENT
        and FINALIZE.

2018-06-18  Eric Botcazou  <ebotcazou@adacore.com>

        * trans-decl.c (gfc_get_fake_result_decl): Revert latest change.

2018-06-17  Eric Botcazou  <ebotcazou@adacore.com>

        * trans-decl.c (nonlocal_dummy_decl_pset): Delete.
        (nonlocal_dummy_decls): Likewise.
        (gfc_nonlocal_dummy_array_decl): Likewise.
        (gfc_get_symbol_decl): Do not call gfc_nonlocal_dummy_array_decl.
        (gfc_get_fake_result_decl): Do not generate a new DECL if simply
        reusing the result of a recursive call.
        (gfc_generate_function_code): Do not create, insert and destroy
        nonlocal_dummy_decls.

2018-06-13  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/86110
        * array.c (gfc_resolve_character_array_constructor): Avoid NULL
        pointer dereference.

2018-06-13  Cesar Philippidis  <cesar@codesourcery.com>

        PR fortran/85703
        * parse.c (decode_oacc_directive): Set gfc_matching_function
        to false.
        (decode_omp_directive): Likewise.

2018-06-13  Cesar Philippidis  <cesar@codesourcery.com>

        PR fortran/85702
        * openmp.c (gfc_match_oacc_wait): Use %C to report error location.

2018-06-12  David Malcolm  <dmalcolm@redhat.com>

        PR other/69968
        * misc.c (gfc_closest_fuzzy_match): Update for renaming of
        levenshtein_distance to get_edit_distance.

2018-06-12  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/44491
        * expr.c (gfc_check_assign): Select non-NULL locus.

2018-06-11  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/45521
        * interface.c (compare_ptr_alloc): New function.
        (generic_correspondence): Call it.

2018-06-10  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * gfortran.h (gfc_expr): Add no_bounds_check field.
        * frontend-passes.c (get_array_inq_function): Set no_bounds_check
        on function and function argument.
        (inline_matmul_assign): Set no_bounds_check on zero expression
        and on lhs of zero expression.
        Also handle A1B2 case if realloc on assigment is active.
        * trans-array.c (gfc_conv_array_ref): Don't do range checking
        if expr has no_bounds_check set.
        (gfc_conv_expr_descriptor): Set no_bounds_check on ss if expr
        has it set.
        * trans-expr.c (gfc_trans_assignment_1): Set no_bounds_check
        on lss and lss if the corresponding expressions have it set.

2018-06-10  Dominique d'Humieres  <dominiq@gcc.gnu.org>

        PR fortran/79854
        * trans-const.c: Remove include "diagnostic-core.h".
        (gfc_conv_constant_to_tree): Replace fatal_error with gcc_unreachable.

2018-06-10  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/85088
        * decl.c (match_attr_spec): Synchronize the DECL_* enum values with the
        INTENT_* values from the enum 'sym_intent'. Call 'match_intent_spec'
        and remove a TODO note.
        * gfortran.h: Add a comment to sym_intent.

2018-06-09  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/38351
        * resolve.c (resolve_operator): Provide better error message for
        derived type entity used in an binary intrinsic numeric operator.

2018-06-09  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/85138
        PR fortran/85996
        PR fortran/86051
        * decl.c (gfc_match_char_spec): Use private namespace in attempt to
        reduce a charlen to a constant.

2018-06-09  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/78278
        * data.c (gfc_assign_data_value): Re-arrange code to allow for
        an error for double initialization of CHARACTER entities.

2018-06-09  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/63514
        * symbol.c (gfc_add_volatile): Enforce F2008:C1282 and F2018:C1588.

2018-06-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/85631
        * trans.h (gfc_ss): Add field no_bounds_check.
        * trans-array.c (gfc_conv_ss_startstride): If flag_realloc_lhs and
        ss->no_bounds_check is set, do not use runtime checks.
        * trans-expr.c (gfc_trans_assignment_1): Set lss->no_bounds_check
        for reallocatable lhs.

2018-06-08  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/86059
        * array.c (match_array_cons_element): NULL() cannot be in an
        array constructor.

2018-06-08  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/78571
        * data.c (create_character_initializer): Return early if type is
        incompatible with CHARACTER.

2018-06-07  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/86045
        * simplify.c (gfc_simplify_mod): Re-arrange code to test whether
        'P' is zero and issue an error if it is.

2018-06-06  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/85641
        * frontend-passes.c (is_fe_temp): Add prototype.
        (realloc_string_callback): Early return for frontend-generated
        temporary.

2018-06-05  Cesar Philippidis  <cesar@codesourcery.com>

        PR fortran/85701

        * openmp.c (gfc_resolve_oacc_declare): Error on functions and
        subroutine data clause arguments.

2018-06-04  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/85981
        * resolve.c (resolve_allocate_deallocate): Check errmsg is default
        character kind.

2018-06-03  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/36497
        * decl.c (variable_decl): Use gfc_add_type for cray pointees.

2018-06-01  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/63570
        * check.c (gfc_check_random_init): New function. Check arguments of
        RANDOM_INIT.
        * gfortran.h (GFC_ISYM_RANDOM_INIT): New enum token.
        * intrinsic.c (add_subroutines): Add RANDOM_INIT to list of
        subroutines.
        (gfc_check_intrinsic_standard): Introduce Fortran 2018 check.
        * intrinsic.h: Add prototypes for gfc_check_random_init and
        gfc_resolve_random_init
        * intrinsic.texi: Document new intrinsic subprogram.
        * iresolve.c (gfc_resolve_random_init): Resolve routine name.
        * trans-decl.c: Declare gfor_fndecl_random_init
        * trans-intrinsic.c (conv_intrinsic_random_init): New function.
        Translate call to RANDOM_INIT.
        (gfc_conv_intrinsic_subroutine): Call it.
        * trans.h: Declare gfor_fndecl_random_init

2018-05-27  Steven G. Kargl  <kargl@gcc.gnu.org>

        * decl.c (match_data_constant):  Fortran 2018 allows pointer
        initialization in a data statement.

2018-05-25  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/85839
        * match.c (gfc_match_block_data): Call gfc_notify_std to warn about
        an obsolescent feature in Fortran 2018.
        (gfc_match_equivalence): Ditto.
        * resolve.c (resolve_common_blocks): Ditto.
        (gfc_resolve_forall): Ditto.
        * symbol.c (gfc_define_st_label): Ditto.

2018-05-24  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/85543
        * resolve.c (update_current_proc_array_outer_dependency): Avoid NULL
        pointer dereference.

2018-05-24  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/85780
        * resolve.c (resolve_fl_procedure): Avoid NULL dereference.

2018-05-24  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/85779
        * decl.c (gfc_match_derived_decl): Fix NULL point dereference.

2018-05-24  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/85895
        * resolve.c (resolve_sync): Resolve expression before checking for
        an error.

2018-05-22  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/85841
        * libgfortran.h: Remove the macros GFC_STD_F2008_TS and
        GFC_STD_OPT_F08TS.
        * error.c (notify_std_msg): Remove GFC_STD_F2008_TS.
        * options.c (set_default_std_flags): Ditto.
        (gfc_handle_option): Make -std=f2008ts an alias for -std=f2018.
        * array.c (gfc_match_array_spec): Replace GFC_STD_F2008_TS by
        GFC_STD_F2018.
        * check.c (gfc_check_atomic, gfc_check_event_query,
        gfc_check_c_f_pointer, gfc_check_c_f_procpointer, gfc_check_c_funloc,
        gfc_check_c_loc, gfc_check_num_images, gfc_check_this_image): Ditto.
        * decl.c (gfc_verify_c_interop_param, gfc_match_decl_type_spec): Ditto.
        * intrinsic.c (add_functions, add_subroutines,
        gfc_check_intrinsic_standard): Ditto.
        * iso-c-binding.def: Ditto.
        * iso-fortran-env.def: Ditto.
        * match.c (gfc_match_event_post, gfc_match_event_wait,
        gfc_match_fail_image, gfc_match_form_team, gfc_match_change_team,
        gfc_match_end_team, gfc_match_sync_team): Ditto.
        * gfortran.texi: Remove mention of -std=f2008ts.
        Move TSs into F2018 section.
        * invoke.texi: Update documentation of -std=f2008ts.

2018-05-21  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/85841
        * libgfortran.h: New macros GFC_STD_OPT_*.
        * error.c (notify_std_msg): New function.
        (gfc_notify_std): Adjust such that it can handle combinations of
        GFC_STD_* flags in the 'std' argument, not just a single one.
        * match.c (match_arithmetic_if, gfc_match_if): Reject arithmetic if
        in Fortran 2018.
        (gfc_match_stopcode): Use GFC_STD_OPT_* macros.
        * options.c (set_default_std_flags): Warn for F2018 deleted features
        by default.
        (gfc_handle_option): F2018 deleted features are allowed in earlier
        standards.
        * symbol.c (gfc_define_st_label, gfc_reference_st_label): Reject
        nonblock do constructs in Fortran 2018.

2018-05-20  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/80657
        * resolve.c (flag_fn_result_spec): Use the 'sym' argument to
        test for self refs to the function result in the character len
        expression. If a self reference is found, emit an error and
        return true.
        (resolve_fntype): Use the function symbol in the calls to the
        above.

2018-05-20  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/49636
        * trans-array.c (gfc_get_array_span): Renamed from
        'get_array_span'.
        (gfc_conv_expr_descriptor): Change references to above.
        * trans-array.h : Add prototype for 'gfc_get_array_span'.
        * trans-intrinsic.c (gfc_conv_associated): Add pre and post
        blocks for 'arg1'.
        * trans-stmt.c (trans_associate_var): If the associate name is
        a subref array pointer, use gfc_get_array_span for the span.

2018-05-20  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82275
        * match.c (gfc_match_type_spec): Go through the array ref and
        decrement 'rank' for every dimension that is an element.

2018-05-19  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/82923
        PR fortran/66694
        PR fortran/82617
        * trans-array.c (gfc_alloc_allocatable_for_assignment): Set the
        charlen backend_decl of the rhs expr to ss->info->string_length
        so that the value in the current scope is used.

2018-05-13  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/63529
        * gfortran.texi: Clarify documentation for Cray pointer and
        assumed-sized array.

2018-05-13  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/85742
        * trans-types.c (gfc_get_dtype_rank_type): Reorder evaluation
        of 'size'. If the element type is a pointer use the size of the
        TREE_TYPE of the type, unless it is VOID_TYPE. In this latter
        case, set the size to zero.

2018-05-13  Steven G. Kargl  <kargl@gcc.gnu.org>

        * gfortran.h: Remove prototype.
        * symbol.c (gfc_new_undo_checkpoint): Remove unused function.

2018-05-11  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/85542
        * expr.c (check_inquiry): Avoid NULL pointer dereference.

2018-05-10  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/85687
        * check.c (gfc_check_rank): Check that the argument is a data object.

2018-05-10  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/85521
        * array.c (gfc_resolve_character_array_constructor): Substrings
        with upper bound smaller than lower bound are zero length strings.

2018-05-10  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/70870
        * data.c (gfc_assign_data_value): Check that a data object does
        not also have default initialization.

2018-05-10  Marek Polacek  <polacek@redhat.com>

        PR fortran/85735
        * options.c (gfc_post_options): Set main_input_filename.

2018-05-10  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/54613
        * intrinsic.texi: Document BACK for MINLOC and MAXLOC.

2018-05-10  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/68846
        PR fortran/70864
        * resolve.c (get_temp_from_expr): The temporary must not have
        dummy or intent attributes.

2018-05-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/54613
        * check.c (gfc_check_minmaxloc): Remove error for BACK not being
        implemented.  Use gfc_logical_4_kind for BACK.
        * simplify.c (min_max_choose): Add optional argument back_val.
        Handle it.
        (simplify_minmaxloc_to_scalar): Add argument back_val. Pass
        back_val to min_max_choose.
        (simplify_minmaxloc_to_nodim): Likewise.
        (simplify_minmaxloc_to_array): Likewise.
        (gfc_simplify_minmaxloc): Add argument back, handle it.
        Pass back_val to specific simplification functions.
        (gfc_simplify_minloc): Remove ATTRIBUTE_UNUSED from argument back,
        pass it on to gfc_simplify_minmaxloc.
        (gfc_simplify_maxloc): Likewise.
        * trans-intrinsic.c (gfc_conv_intrinsic_minmaxloc): Adjust
        comment. If BACK is true, use greater or equal (or lesser or
        equal) insteal of greater (or lesser). Mark the condition of
        having found a value which exceeds the limit as unlikely.

2018-05-07  Jeff Law  <law@redhat.comg>

        * scanner.c (preprocessor_line): Call linemap_add after a line
        directive that changes the current filename.

2018-05-06  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/85507
        * dependency.c (gfc_dep_resolver): Revert looking at coarray dimension
        introduced by r259385.
        * trans-intrinsic.c (conv_caf_send): Always report a dependency for
        same variables in coarray assignments.

2018-05-02  Tom de Vries  <tom@codesourcery.com>

        PR libgomp/82428
        * f95-lang.c (DEF_GOACC_BUILTIN_ONLY): Define.

2018-04-24  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/85520
        * decl.c (gfc_match_char_spec): Check for negative length and set to 0.

2018-04-14  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/81773
        PR fortran/83606
        * dependency.c (gfc_dep_resolver): Coarray indexes are to be ignored
        during dependency computation.  They define no data dependency.
        * trans-array.c (conv_array_index_offset): The stride can not be set
        here, prevent fail.
        * trans-intrinsic.c (conv_caf_send): Add creation of temporary array
        for caf_get's result and copying to the array with vectorial
        indexing.

2018-04-14  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/85387
        * frontend-passes.c (traverse_io_block): Check for start, end or
        stride being defined by an outer implied DO loop.

2018-04-12  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/83064
        PR testsuite/85346
        * trans-stmt.c (gfc_trans_forall_loop): Use annot_expr_ivdep_kind
        for annotation and remove dependence on -ftree-parallelize-loops.

2018-04-10  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/85313
        * openmp.c (resolve_omp_do): Remove bogus if (j < i) break;.
        (resolve_oacc_nested_loops): Likewise.  Formatting fix.

2018-04-09  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/83064
        * trans-stmt.c (gfc_trans_forall_loop): Remove annotation for
        parallell processing of DO CONCURRENT -ftree-parallelize-loops
        is set.

2018-04-09  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/51260
        * resolve.c (resolve_variable): Simplify cases where access to a
        parameter array results in a single constant.

2018-04-02  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/85102
        * decl.c (variable_decl): If upper or lower bounds simplify
        to a constant, use that.

2018-03-30  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/84931
        * simplify.c (gfc_convert_constant): Handle case of array
        constructors within an array that has no iterator and improve
        the conciseness of this section of code.

2017-03-30  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/85111
        * array.c (gfc_resolve_character_array_constructor): Early
        exit for zero-size arrays.
        * simplify.c (simplify_transformation_to_array): Exit early
        if the result size is zero.
        (simplify_minmaxloc_to_array): Likewise.

2018-03-28  Mikael Morin  <mikael@gcc.gnu.org>

        PR fortran/69497
        * symbol.c (gfc_symbol_done_2): Start freeing namespaces
        from the root.
        (gfc_free_namespace): Restore assert (revert r258839).

2018-03-28  Jakub Jelinek  <jakub@redhat.com>

        * gfortran.h (gfc_dt): Rename default_exp field to dec_ext.
        * ioparm.def (IOPARM_dt_default_exp): Rename to ...
        (IOPARM_dt_dec_ext): ... this.
        * trans-io.c (build_dt): Adjust for default_exp renaming to
        dec_ext and IOPARM_dt_default_exp renaming to IOPARM_dt_dec_ext.
        * io.c (match_io): Likewise.

2018-03-27  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/85084
        * frontend-passes.c (gfc_run_passes): Do not run front-end
        optimizations if a previous error occurred.

2018-03-27  Thomas Koenig  <tkoenig@gcc.gnu.org>
        Harald Anlauf  <anlauf@gmx.de>

        PR fortran/85083
        * primary.c (gfc_convert_to_structure_constructor): Check
        conformance of argument types in structure constructor.

2018-03-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/66709
        * io.c: Include constructor.h.
        (resolve_tag_format): For a constant character array, concatenate
        into a single character expression.

2018-03-25  Seth Johnson <johnsonsr@ornl.gov>
        Dominique d'Humieres  <dominiq@gcc.gnu.org>

        PR fortran/84924
        * check.c (gfc_check_c_f_pointer): Allow scalar noninteroperable
        scalar derived type with -std=f2003 and -std=f2008.

2018-03-24  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
            Dominique d'Humieres  <dominiq@gcc.gnu.org>

        PR fortran/69497
        * symbol.c (gfc_free_namespace): Delete the assert and only if
        refs count is equals zero, free the namespace. Otherwise,
        something is halfway and other errors will resound.

2018-03-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/70068
        * expr.c (find_substring_ref): Change types of start, end
        and length variables to gfc_charlen_t. Set length to zero
        for empty substring.

2018-03-24  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/42651
        * decl.c (check_function_name): Improved error message
        (gfc_match_volatile, gfc_match_asynchronous) Use check_function_name.

2018-03-22  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/84922
        * decl.c (get_proc_name): If the MODULE prefix appears in interface
        body, then it must appear on the contained subroutine or function.
        While here, fix nearby mis-indented code.

2018-03-21  Thomas Koenig  <tkoenig@gcc.gnu.org>
        Harald Anlauf  <anlauf@gmx.de>

        PR fortran/84957
        * trans-types.c (gfc_sym_type): Do not dereference NULL pointer.

2018-03-21  Janne Blomqvist  <jb@gcc.gnu.org>

        PR fortran/84615
        * trans-expr.c (gfc_conv_procedure_call): Convert charlen to
        gfc_charlen_type_node when calling procedure.

2018-03-20  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/85001
        * interface.c (symbol_rank): Remove bogus null pointer check that
        crept in when translating a ternary operator into an if-else
        constructor.

2018-03-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/84931
        * simplify.c (gfc_convert_constant): Correctly handle iterators
        for type conversion.

2018-03-18  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/77414
        * decl.c (get_proc_name):  Check for a subroutine re-defined in
        the contain portion of a subroutine.  Change language of existing
        error message to better describe the issue. While here fix whitespace
        issues.

2018-03-18  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/65453
        * decl.c (get_proc_name): Catch clash between a procedure statement
        and a contained subprogram

2018-03-16  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/69395
        * decl.c (merge_array_spec): Correct the error condition.

2018-03-15  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/78741
        * decl.c (get_proc_name):  Check for clash of entry name with
        subroutine name.

2018-03-15  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/69395
        * decl.c (merge_array_spec): Limit the merging to maximum allowed
        dimensions, and issue error message if limit is exceeded.

2018-03-13  Steven G. Kargl  <kargl@gcc.gnu.org>

        * check.c (gfc_check_kill_sub):  Remove check for INTEGER(4) or (8).
        * intrinsic.c (add_functions): Remove reference to gfc_resolve_kill.
        (add_subroutines): Remove reference to gfc_resolve_kill_sub.
        * intrinsic.texi: Update documentation.
        * iresolve.c (gfc_resolve_kill, gfc_resolve_kill_sub): Remove.
        * trans-decl.c (gfc_build_intrinsic_function_decls):  Add
        gfor_fndecl_kill and gfor_fndecl_kill_sub
        * trans-intrinsic.c (conv_intrinsic_kill, conv_intrinsic_kill_sub): new
        functions.
        (gfc_conv_intrinsic_function): Use conv_intrinsic_kill.
        (gfc_conv_intrinsic_subroutine): Use conv_intrinsic_kill_sub.
        * trans.h: Declare gfor_fndecl_kill and gfor_fndecl_kill_sub.

2018-03-11  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/84546
        * trans-array.c (structure_alloc_comps): Make sure that the
        vptr is copied and that the unlimited polymorphic _len is used
        to compute the size to be allocated.
        * trans-expr.c (gfc_get_class_array_ref): If unlimited, use the
        unlimited polymorphic _len for the offset to the element.
        (gfc_copy_class_to_class): Set the new 'unlimited' argument.
        * trans.h : Add the boolean 'unlimited' to the prototype.

2018-03-11  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/83939
        * resolve.c (resolve_fl_procedure): Enforce F2018:C15100.

2018-03-11  Steven G. Kargl  <kargls@gcc.gnu.org>

        * check.c (gfc_check_kill):  Check pid and sig are scalar.
        (gfc_check_kill_sub): Restrict kind to 4 and 8.
        * intrinsic.c (add_function): Sort keyword list.  Add pid and sig
        keywords for KILL.  Remove redundant *back="back" in favor of the
        original *bck="back".
        (add_subroutines): Sort keyword list.  Add pid and sig keywords
        for KILL.
        * intrinsic.texi: Fix documentation to consistently use pid and sig.
        * iresolve.c (gfc_resolve_kill): Kind can only be 4 or 8.  Choose the
        correct function.
        (gfc_resolve_rename_sub): Add comment.

2018-03-11  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/66128
        * simplify.c (simplify_transformation): Return default result for
        empty array argument.
        (gfc_simplify_all): Remove special-case handling for zerosize.
        (gfc_simplify_any): Likewise.
        (gfc_simplify_count): Likewise.
        (gfc_simplify_iall): Likewise.
        (gfc_simplify_iany): Likewise.
        (gfc_simplify_iparity): Likewise.
        (gfc_simplify_minval): Likewise.
        (gfc_simplify_maxval): Likewise.
        (gfc_simplify_norm2): Likewise.
        (gfc_simplify_product): Likewise.
        (gfc_simplify_sum): Likewise.

2018-03-10  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/84734
        * arith.c (check_result, eval_intrinsic):  If result overflows, pass
        the expression up the chain instead of a NULL pointer.

2018-03-07  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/64124
        PR fortran/70409
        * decl.c (gfc_match_char_spec): Try to reduce a charlen to a constant.

2017-03-06  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/84697
        PR fortran/66128
        * expr.c (simplify_parameter_variable): If p is a size zero array
        and not an ARRAY_EXPR insert an empty array constructor and
        return.
        * gfortran.h: Add prototype for gfc_is_size_zero_array.
        * simplify.c (is_size_zero_array): Make non-static and rename into
        (gfc_is_size_zero_array):  Check for parameter arrays of zero
        size by comparing shape and absence of constructor.
        (gfc_simplify_all): Use gfc_is_size_zero_array instead of
        is_size_zero_array.
        (gfc_simplify_count): Likewise.
        (gfc_simplify_iall): Likewise.
        (gfc_simplify_iany): Likewise.
        (gfc_simplify_iparity): Likewise.
        (gfc_simplify_minval): Likewise.
        (gfc_simplify_maxval): Likewise.
        (gfc_simplify_product): Likewise.
        (gfc_simplify_sum): Likewise.

2018-03-06  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/56667
        * primary.c (match_sym_complex_part): Give the matcher for an implied
        do-loop a chance to run.

2018-03-03  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/71085
        * trans-expr.c (gfc_apply_interface_mapping_to_expr): Do not
        dereference NULL pointer.

2018-03-03  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/66128
        * simplify.c (is_size_zero_array): New function to check for size
        zero array.
        (gfc_simplify_all, gfc_simplify_any, gfc_simplify_count,
         gfc_simplify_iall, gfc_simplify_iany, gfc_simplify_iparity,
         gfc_simplify_minval, gfc_simplify_maxval, gfc_simplify_norm2,
         gfc_simplify_product, gfc_simplify_sum): Use it, and implement
        requirements from F2018.

2018-03-03  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/51434
        * simplify.c (gfc_simplify_transfer): Resolve mold.

2018-03-03  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/80965
        * resolve.c (build_loc_call): Change symtree name from 'loc' to
        '_loc'.

2018-03-01  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/84219
        * target-memory.c (gfc_interpret_derived): Assert that BT_VOID
        components are caf tokens.
        (gfc_target_interpret_expr): Treat BT_VOID expressions as
        integers.

2018-03-01  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/84538
        * class.c (class_array_ref_detected): Remove the condition that
        there be no reference after the array reference.
        (find_intrinsic_vtab): Remove excess whitespace.
        * trans-array.c (gfc_conv_scalarized_array_ref): Rename 'tmp'
        as 'base and call build_class_array_ref earlier.

2018-02-28  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/83901
        * trans-stmt.c (trans_associate_var): Make sure that the se
        expression is a pointer type before converting it to the symbol
        backend_decl type.

2018-02-25  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/83633
        * decl.c (variable_decl): Check that an explicit-shape-array with
        nonconstant bounds is allowed.

2018-02-25  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/84523
        * trans-intrinsic.c (gfc_conv_allocated): If the argument se
        has a pre block, add it to the expression pre block.

2018-02-25  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/78238
        * gfortran.h (gfc_integer_4_kind): Define.
        * resolve.c (resolve_select_type): Make sure that the
        kind of c->high is gfc_integer_4_kind.

2018-02-24  Steven G. Kargl <kargl@gcc.gnu.org>

        PR fortran/30792
        * decl.c (gfc_match_data): Check for invalid substring in
        data-implied-do

2018-02-23  Steven G. Kargl  <kargl@gcc.gnu.org>

        * intrinsic.texi: Arguments to MATMUL cannot both be rank one.

2018-02-23  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/84511
        * trans-io.c (transfer_expr): Deal with C_LOC in transfer statement.

2018-02-23  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/84346
        * interface.c (compare_actual_formal): Issue error if keyword is
        used in a statement function.

2018-02-23  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/84506
        * trans-io.c (set_parameter_value_inquire): Adjust range check of
        negative unit values for kind=8 units to the kind=4 negative limit.

2018-02-23  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/83149
        * trans-types.c (gfc_sym_type): Test sym->ns->proc_name before
        accessing its components.

2018-02-23  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/83149
        * trans-decl.c (gfc_finish_var_decl): Test sym->ns->proc_name
        before accessing its components.

2018-02-23  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/83148
        * trans-const.c : Clean up some whitespace issues.
        * trans-expr.c (gfc_conv_initializer): If an iso_c_binding
        derived type has a kind value of zero, set it to the default
        integer kind.

2018-02-23  Janne Blomqvist  <jb@gcc.gnu.org>

        PR fortran/84519
        * trans-decl.c (gfc_build_builtin_function_decls): Add bool
        argument to stop and error stop decls.
        * trans-stmt.c (gfc_trans_stop): Add false value to argument
        lists.

2018-02-22  Janne Blomqvist  <jb@gcc.gnu.org>

        PR 78534
        PR 84509
        * trans-decl.c (gfc_build_builtin_function_decls): Pass
        gfc_int8_type node to pause_numeric, size_type_node to
        pause_string.
        * trans-stmt.c (gfc_trans_pause): Likewise.

2018-02-22  Janne Blomqvist  <jb@gcc.gnu.org>

        * gfortran.texi: Update Coarray API description.
        * trans-decl.c (gfc_build_builtin_function_decls): Use size_t for
        character lengths, int for exit codes.
        (generate_coarray_sym_init): Use size_t for character length.
        * trans-intrinsic.c (conv_co_collective): Likewise.
        * trans-stmt.c (gfc_trans_lock_unlock): Likewise.
        (gfc_trans_event_post_wait): Likewise.
        (gfc_trans_sync): Likewise.
        (gfc_trans_stop): Use size_t for character lengths, int for exit
        codes.

2018-02-20  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/48890
        PR fortran/83823
        * primary.c (gfc_convert_to_structure_constructor):
        For a constant string constructor, make sure the length
        is correct.

2018-02-19  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/83344
        PR fortran/83975
        * resolve.c (resolve_assoc_var): Rearrange the logic for the
        determination of the character length of associate names. If
        the associate name is missing a length expression or the length
        expression is not a constant and the target is not a variable,
        make the associate name allocatable and deferred length.
        * trans-decl.c (gfc_get_symbol_decl): Null the character length
        backend_decl for deferred length associate names that are not
        variables. Set 'length' to gfc_index_zero_node for character
        associate names, whose character length is a PARM_DECL.

2018-02-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/35339
        * frontend-passes.c (traverse_io_block): Remove workaround for
        PR 80945.

2018-02-19  Andre Vehreschild  <vehre@gcc.gnu.org>

        * gfortran.texi: Document additional src/dst_type.  Fix some typos.
        * trans-decl.c (gfc_build_builtin_function_decls): Declare the new
        argument of _caf_*_by_ref () with * e { get, send, sendget }.
        * trans-intrinsic.c (gfc_conv_intrinsic_caf_get): Add the type of the
        data referenced when generating a call to caf_get_by_ref ().
        (conv_caf_send): Same but for caf_send_by_ref () and
        caf_sendget_by_ref ().

2018-02-18  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/84389
        * io.c (check_format): Allow FMT_COLON.

2018-02-18  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/80945
        * trans-array.c (gfc_conv_expr_descriptor): Set parmtype from
        the typenode in the case of deferred length characters.

2018-02-17  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/84270
        * frontend-passes (scalarized_expr):  If the expression
        is an assumed size array, leave in the last reference
        and pass AR_SECTION instead of AR_FULL to gfc_resolve
        in order to avoid an error.

2018-02-17  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/84115
        * resolve.c (resolve_assoc_var): If a non-constant target expr.
        has no string length expression, make the associate variable
        into a deferred length, allocatable symbol.
        * trans-decl.c (gfc_is_reallocatable_lhs): Add and use a ptr to
        the symbol.
        * trans-stmt.c (trans_associate_var): Null and free scalar
        associate names that are allocatable. After assignment, remove
        the allocatable attribute to prevent reallocation.

2018-02-16  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/84418
        * trans-openmp.c (gfc_trans_omp_clauses): For OMP_CLAUSE_LINEAR_REF
        kind set OMP_CLAUSE_LINEAR_STEP to TYPE_SIZE_UNIT times last_step.

2018-02-16  Dominique d'Humieres  <dominiq@gcc.gnu.org>

        PR fortran/84354
        * decl.c (gfc_get_pdt_instance): Replace '%qs' with %qs.

2018-02-15  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/84409
        * interface.c (check_dtio_arg_TKR_intent): Add a check for character
        length.

2018-02-14  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/84385
        * match.c (gfc_match_select_type): Fix check for selector in
        SELECT TYPE statement.

2018-02-13  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/84313
        * symbol.c (check_conflict): Reject procedure pointers in common blocks.

2018-02-13  Alastair McKinstry  <alastair.mckinstry@sceal.ie>
            Janne Blomqvist  <jb@gcc.gnu.org>

        * module.c (dump_module): Use lbasename to ensure that module
        files are reproducible.

2018-02-12  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/84273
        * resolve.c (resolve_component): Fix checks of passed argument in
        procedure-pointer components.

2018-02-11  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>

        PR fortran/35299
        * resolve.c (resolve_formal_arglist): Update error message.

2018-02-11  Andre Vehreschild  <vehre@gcc.gnu.org>

        * gfortran.texi: Fix typos in documentation of caf_register ().
        * trans-array.c (structure_alloc_comps): Only register a component of
        a derived typed corray, not of an ultimate component coarray.

2018-02-11  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/54223
        PR fortran/84276
        * interface.c (compare_actual_formal): Add in_statement_function
        bool parameter.  Skip check of INTENT attribute for statement
        functions.  Arguments to a statement function cannot be optional,
        issue error for missing argument.
        (gfc_procedure_use, gfc_ppc_use, gfc_arglist_matches_symbol): Use
         in_statement_function.

2018-02-11  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/84074
        * trans-expr.c (gfc_conv_derived_to_class): Set the use_offset
        flag. If the is a vector subscript or the expression is not a
        variable, make the descriptor one-based.

2018-02-10  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/84141
        PR fortran/84155
        * trans-array.c (gfc_array_init_size): Revert the change made
        in revision 257356 setting the dtype.
        * trans-types.c (gfc_get_dtype): Do not use the cached dtype.
        Call gfc_get_dtype_rank_type every time.

        PR fortran/56691
        * trans-array.c (gfc_conv_expr_descriptor): If the source array
        is a descriptor type, use its offset, removing the condition
        that is be a class expression.

2018-02-07  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/82994
        * match.c (gfc_match_deallocate): Check for NULL pointer.

2018-02-07  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/68560
        * trans-intrinsic.c (gfc_conv_intrinsic_shape): New function.
        (gfc_conv_intrinsic_function): Call it.

2018-02-07  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/82049
        * match.c (gfc_match_type_spec): If the charlen is non-NULL, then
        try to resolve it.  While here return early if possible.

2018-02-04  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/84115
        * trans-decl.c (gfc_get_symbol_decl): Do not finish the decl of
        'length' if the symbol charlen backend_decl is an indirect ref.

2018-02-03  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/84141
        PR fortran/84155
        * trans-array.c (gfc_array_init_size): Instead of gfc_get_dtype
        use gfc_get_dtype_rank_type.

2018-02-01  Janne Blomqvist  <jb@gcc.gnu.org>

        PR 83975
        PR 83344
        * resolve.c (resolve_assoc_var): Generate an error if
        target length unknown.

2018-02-01  Janne Blomqvist  <jb@gcc.gnu.org>

        PR fortran/83705
        * simplify.c (gfc_simplify_repeat): Increase limit for deferring
        to runtime, print a warning message.

2018-01-31  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/84116
        * openmp.c (gfc_match_omp_clauses): If all the linear
        gfc_match_omp_variable_list calls failed, don't gfc_free_omp_namelist
        nor set *head = NULL.  Formatting fixes.

2018-01-31  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/84088
        * trans-expr.c (gfc_conv_procedure_call): If the parm expr is
        an address expression passed to an assumed rank dummy, convert
        to an indirect reference.

2018-01-31  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * dump-parse-tree.c (write_proc): Use sym_name (which may
        be sym->binding_label) instead of sym->name.

2018-01-31  Janne Blomqvist  <jb@gcc.gnu.org>

        * trans-const.c (gfc_conv_string_init): Use gfc_charlen_t instead
        of int for slen.

2018-01-31  Janne Blomqvist  <jb@gcc.gnu.org>

        PR fortran/78534
        * trans-expr.c (fill_with_spaces): Use memset instead of
        generating loop.
        (gfc_trans_string_copy): Improve opportunity to use builtins with
        constant lengths.

2018-01-30  Jakub Jelinek  <jakub@redhat.com>

        PR debug/84131
        * trans-array.c (gfc_get_descriptor_offsets_for_info): Set *data_off
        to DATA_FIELD's offset rather than OFFSET_FIELD's offset.

2018-01-30  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/84134
        * array.c (gfc_ref_dimen_size): Whitespace fixes.  If stride is
        zero, return false.

2018-01-30  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/84133
        * frontend-passes (matmul_to_var_expr): Return early if
        in association list.
        (inline_matmul_assign): Likewise.

2017-01-29  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/84073
        * resolve.c (resolve_component): Ensure BIND(C) character
        components have length one.
        (resolve_symbol): Likewise for variables.

2018-01-27  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/84065
        * decl.c (add_init_expr_to_sym): Ignore initializers for too large
        lengths.

2018-01-26  Damian Rouson  <damian@sourceryinstitute.org>
            Alessandro Fanfarillo  <fanfarillo.gcc@gmail.com>
            Soren Rasmussen  <s.c.rasmussen@gmail.com>

        Partial support for Fortran 2018 teams features.

        * array.c (gfc_match_array_ref): add team attribute in coarray
        transfers.
        * check.c (gfc_check_get_team, gfc_check_team_number): add new
        functions for get_team and team_number.
        * dump-parse-tree.c (show_code_node): add new statements: form team,
        change team, end team, and sync team.
        * expr.c (gfc_find_team_co): add new function.
        * gfortran.h: add new statements.
        * intrinsic.c (add_functions): add get_team and team_number functions.
        * intrinsic.h: add get_team and team_number prototypes for check,
        simplify, and resolve.
        * iresolve.c (gfc_resolve_get_team, gfc_resolve_team_number): add new
        functions.
        * iso-fortran-env.def: add the team_type derived type.
        * match.c (gfc_match_if, gfc_match_form_team, gfc_match_team_number)
        (gfc_match_end_team, gfc_match_sync_team, gfc_match_change_team):
        add change team, end team, form team, sync team match and functions.
        * match.h: add new prototypes for change team, end team, form team,
        and sync team.
        * parse.c (decode_statement): add cases for change team, end team,
        form team, and sync team.
        * resolve.c: add cases for exec form team, change team, end team, and
        sync team.
        * simplify.c (gfc_simplify_get_team): add new function for get team.
        * st.c (gfc_free_statement): add cases exec for change team, end team,
        form team, sync team.
        * trans-decl.c (gfor_fndecl_caf_form_team)
        (gfor_fndecl_caf_change_team, gfor_fndecl_caf_end_team)
        (gfor_fndecl_caf_sync_team, gfor_fndecl_caf_get_team)
        (gfor_fndecl_caf_team_number): add functions and definitions.
        * trans-intrinsic.c (conv_caf_send, conv_intrinsic_team_number): add
        new function and team_type argument support.
        * trans-stmt.c (gfc_trans_form_team, gfc_trans_change_team)
        (gfc_trans_end_team, gfc_trans_sync_team): add new functions.
        * trans-stmt.h: add new prototypes.
        * trans-types.c (gfc_get_derived_type): check condition for team_type.
        * trans.c (trans_code): new exec cases for form team, change team, end
        team, and sync team.
        * trans.h: add new prototypes.

2018-01-26  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/83998
        * simplify.c (compute_dot_product):  Initialize result to INTEGER(1) 0
        or .false.  The summation does the correct type conversion.
        (gfc_simplify_dot_product): Special case zero-sized arrays.

2018-25-01  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/37577
        * array.c (gfc_match_array_ref): If standard earlier than F2008
        it is an error if the reference dimension is greater than 7.
        libgfortran.h : Increase GFC_MAX_DIMENSIONS to 15. Change the
        dtype masks and shifts accordingly.
        * trans-array.c (gfc_conv_descriptor_dtype): Use the dtype
        type node to check the field.
        (gfc_conv_descriptor_dtype): Access the rank field of dtype.
        (duplicate_allocatable_coarray): Access the rank field of the
        dtype descriptor rather than the dtype itself.
        * trans-expr.c (get_scalar_to_descriptor_type): Store the type
        of 'scalar' on entry and use its TREE_TYPE if it is ARRAY_TYPE
        (ie. a character).
        (gfc_conv_procedure_call): Pass TREE_OPERAND (tmp,0) to
        get_scalar_to_descriptor_type if the actual expression is a
        constant.
        (gfc_trans_structure_assign): Assign the rank directly to the
        dtype rank field.
        * trans-intrinsic.c (gfc_conv_intrinsic_rank): Cast the result
        to default integer kind.
        (gfc_conv_intrinsic_sizeof): Obtain the element size from the
        'elem_len' field of the dtype.
        * trans-io.c (gfc_build_io_library_fndecls): Replace
        gfc_int4_type_node with dtype_type_node where necessary.
        (transfer_namelist_element): Use gfc_get_dtype_rank_type for
        scalars.
        * trans-types.c : Provide 'get_dtype_type_node' to acces the
        dtype_type_node and, if necessary, build it.
        The maximum size of an array element is now determined by the
        maximum value of size_t.
        Update the description of the array descriptor, including the
        type def for the dtype_type.
        (gfc_get_dtype_rank_type): Build a constructor for the dtype.
        Distinguish RECORD_TYPEs that are BT_DERIVED or BT_CLASS.
        (gfc_get_array_descriptor_base): Change the type of the dtype
        field to dtype_type_node.
        (gfc_get_array_descr_info): Get the offset to the rank field of
        the dtype.
        * trans-types.h : Add a prototype for 'get_dtype_type_node ()'.
        * trans.h : Define the indices of the dtype fields.

2018-23-01  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/83866
        * decl.c (gfc_match_derived_decl): If eos not matched, recover
        and emit error about garbage after declaration.

2018-23-01  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/83898
        * trans-stmt.c (trans_associate_var): Do not set cst_array_ctor
        for characters.

2018-01-22  Janne Blomqvist  <jb@gcc.gnu.org>

        PR 78534
        PR 83704
        * arith.c (gfc_arith_concat): Use size_t for string length.
        (gfc_compare_string): Likewise.
        (gfc_compare_with_Cstring): Likewise.
        * array.c (gfc_resolve_character_array_constructor): Use
        HOST_WIDE_INT, gfc_mpz_get_hwi.
        * check.c (gfc_check_fe_runtime_error): Use size_t.
        * data.c (create_character_initializer): Use HOST_WIDE_INT,
        gfc_extract_hwi.
        * decl.c (gfc_set_constant_character_len): Use gfc_charlen_t.
        (add_init_expr_to_sym): Use HOST_WIDE_INT.
        * expr.c (gfc_build_init_expr): Use HOST_WIDE_INT,
        gfc_extract_hwi.
        (gfc_apply_init): Likewise.
        * match.h (gfc_set_constant_character_len): Update prototype.
        * primary.c (match_string_constant): Use size_t.
        * resolve.c (resolve_ordinary_assign): Use HOST_WIDE_INT,
        gfc_mpz_get_hwi.
        * simplify.c (init_result_expr): Likewise.
        (gfc_simplify_len_trim): Use size_t.
        * target-memory.c (gfc_encode_character): Use size_t.
        (gfc_target_encode_expr): Use HOST_WIDE_INT, gfc_mpz_get_hwi.
        (interpret_array): Use size_t.
        (gfc_interpret_character): Likewise.
        * target-memory.h (gfc_encode_character): Update prototype.
        (gfc_interpret_character): Likewise.
        (gfc_target_interpret_expr): Likewise.
        * trans-const.c (gfc_build_string_const): Use size_t for length
        argument.
        (gfc_build_wide_string_const): Likewise.
        * trans-const.h (gfc_build_string_const): Likewise.
        (gfc_build_wide_string_const): Likewise.

2018-01-20  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/83900
    * simplify.c (gfc_simplify_matmul): Set return type correctly.

2018-01-19  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/83900
        * simplify.c (gfc_simplify_matmul): Delete bogus assertion.

2018-01-17  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/83864
        * expr.c (add_init_expr_to_sym): Do not dereference NULL pointer.

2018-01-17  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/83874
        * decl.c (add_init_expr_to_sym): Do not dereference NULL pointer.

2018-01-15  Louis Krupp  <louis.krupp@zoho.com>

        PR fortran/82257
        * interface.c (compare_rank): Don't try to retrieve CLASS_DATA
        from symbol marked unlimited polymorphic.
        * resolve.c (resolve_structure_cons): Likewise.
        * misc.c (gfc_typename): Don't dereference derived->components
        if it's NULL.

2018-01-15  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/54613
        * gfortran.h (gfc_check_f): Rename f4ml to f5ml.
        (gfc_logical_4_kind): New macro
        * intrinsic.h (gfc_simplify_minloc): Add a gfc_expr *argument.
        (gfc_simplify_maxloc): Likewise.
        (gfc_resolve_maxloc): Likewise.
        (gfc_resolve_minloc): Likewise.
        * check.c (gfc_check_minloc_maxloc): Add checking for "back"
        argument; also raise error if it is used (for now). Add it
        if it isn't present.
        * intrinsic.c (add_sym_4ml): Rename to
        (add_sym_5ml), adjust for extra argument.
        (add_functions): Add "back" constant. Adjust maxloc and minloc
        for back argument.
        * iresolve.c (gfc_resolve_maxloc): Add back argument. If back is
        not of gfc_logical_4_kind, convert.
        (gfc_resolve_minloc): Likewise.
        * simplify.c (gfc_simplify_minloc): Add back argument.
        (gfc_simplify_maxloc): Likewise.
        * trans-intinsic.c (gfc_conv_intrinsic_minmaxloc): Rename last
        argument to %VAL to ensure passing by value.
        (gfc_conv_intrinsic_function): Call gfc_conv_intrinsic_minmaxloc
        also for library calls.

2018-01-13  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR fortran/82007
        * resolve.c (resolve_transfer): Delete code looking for 'DT'
        format specifiers in format strings. Set formatted to true if a
        format string or format label is present.
        * trans-io.c (get_dtio_proc): Likewise. (transfer_expr): Fix
        whitespace.

2018-01-13  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/83744
        * dump-parse-tree.c (get_c_type_name): Remove extra line.
        Change for loop to use declaration in for loop. Handle BT_LOGICAL
        and BT_CHARACTER.
        (write_decl): Add where argument. Fix indentation. Replace
        assert with error message. Add typename to warning
        in comment.
        (write_type): Adjust locus to call of write_decl.
        (write_variable): Likewise.
        (write_proc): Likewise. Replace assert with error message.

2018-01-13  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/52162
        * trans-expr.c (gfc_trans_scalar_assign): Flag is_alloc_lhs if
        the rhs expression is neither an elemental nor a conversion
        function.

        PR fortran/83622
        * trans-array.c (is_pointer_array): Remove unconditional return
        of false for -fopenmp.

2018-01-13  Thomas Koenig  <tkoenig@gcc.gnu.org>
        <emsr@gcc.gnu.org>

        PR fortran/83803
        * dump-parse-tree.c (write_proc): Always emit closing parenthesis
        for functions.

2018-01-10  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/82367
        * resolve.c (resolve_allocate_expr): Check for NULL pointer.

2018-01-10  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/83093
        * resolve.c (resolve_charlen): Check the type of cl->length
        after resolution.

2018-01-10  Janne Blomqvist  <jb@gcc.gnu.org>

        PR fortran/83740
        * trans-array.c (gfc_trans_array_ctor_element): Fix formatting.

2018-01-10  Janne Blomqvist  <jb@gcc.gnu.org>

        PR fortran/83740
        * trans-array.c (gfc_trans_array_ctor_element): Convert RHS to the
        LHS type when assigning.

2018-01-09  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/83742
        * expr.c (gfc_is_simply_contiguous): Check for NULL pointer.

2018-01-08  Steven G. Kargl  <kargl@gcc.gnu.org>

        * match.c (gfc_match_allocate): Check for NULL pointer.

2018-01-08  Steven G. Kargl  <kargl@gcc.gnu.org>

        * expr.c (gfc_check_pointer_assign): Fix typo in comment.

2018-01-08  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/83611
        * decl.c (gfc_get_pdt_instance): If parameterized arrays have
        an initializer, convert the kind parameters and add to the
        component if the instance.
        * trans-array.c (structure_alloc_comps): Add 'is_pdt_type' and
        use it with case COPY_ALLOC_COMP. Call 'duplicate_allocatable'
        for parameterized arrays. Clean up typos in comments. Convert
        parameterized array initializers and copy into the array.
        * trans-expr.c (gfc_trans_scalar_assign): Do a deep copy for
        parameterized types.
        *trans-stmt.c (trans_associate_var): Deallocate associate vars
        as necessary, when they are PDT function results for example.

        PR fortran/83731
        * trans-array.c (structure_alloc_comps): Only compare len parms
        when they are declared explicitly.

2018-01-06  Janne Blomqvist  <jb@gcc.gnu.org>

        PR fortran/50892
        * trans-expr.c (gfc_trans_pointer_assignment): fold_convert rhs to
        lhs type.

2018-01-05  Janne Blomqvist  <jb@gcc.gnu.org>

        PR fortran/78534
        PR fortran/66310
        * array.c (got_charlen): Use gfc_charlen_int_kind.
        * class.c (gfc_find_derived_vtab): Use gfc_size_kind instead of
        hardcoded kind.
        (find_intrinsic_vtab): Likewise.
        * decl.c (match_char_length): Use gfc_charlen_int_kind.
        (add_init_expr_to_sym): Use gfc_charlen_t and gfc_charlen_int_kind.
        (gfc_match_implicit): Use gfc_charlen_int_kind.
        * dump-parse-tree.c (show_char_const): Use gfc_charlen_t and size_t.
        (show_expr): Use HOST_WIDE_INT_PRINT_DEC.
        * expr.c (gfc_get_character_expr): Length parameter of type
        gfc_charlen_t.
        (gfc_get_int_expr): Value argument of type HOST_WIDE_INT.
        (gfc_extract_hwi): New function.
        (simplify_const_ref): Make string_len of type gfc_charlen_t.
        (gfc_simplify_expr): Use HOST_WIDE_INT for substring refs.
        * frontend-passes.c (optimize_trim): Use gfc_charlen_int_kind.
        * gfortran.h (gfc_mpz_get_hwi): New prototype.
        (gfc_mpz_set_hwi): Likewise.
        (gfc_charlen_t): New typedef.
        (gfc_expr): Use gfc_charlen_t for character lengths.
        (gfc_size_kind): New extern variable.
        (gfc_extract_hwi): New prototype.
        (gfc_get_character_expr): Use gfc_charlen_t for character length.
        (gfc_get_int_expr): Use HOST_WIDE_INT type for value argument.
        * gfortran.texi: Update description of hidden string length argument.
        * iresolve.c (check_charlen_present): Use gfc_charlen_int_kind.
        (gfc_resolve_char_achar): Likewise.
        (gfc_resolve_repeat): Pass string length directly without
        temporary, use gfc_charlen_int_kind.
        (gfc_resolve_transfer): Use gfc_charlen_int_kind.
        * match.c (select_intrinsic_set_tmp): Use HOST_WIDE_INT for charlen.
        * misc.c (gfc_mpz_get_hwi): New function.
        (gfc_mpz_set_hwi): New function.
        * module.c (atom_int): Change type from int to HOST_WIDE_INT.
        (parse_integer): Don't complain about large integers.
        (write_atom): Use HOST_WIDE_INT for integers.
        (mio_integer): Handle integer type mismatch.
        (mio_hwi): New function.
        (mio_intrinsic_op): Use HOST_WIDE_INT.
        (mio_array_ref): Likewise.
        (mio_expr): Likewise.
        * primary.c (match_substring): Use gfc_charlen_int_kind.
        * resolve.c (resolve_substring_charlen): Use gfc_charlen_int_kind.
        (resolve_character_operator): Likewise.
        (resolve_assoc_var): Likewise.
        (resolve_select_type): Use HOST_WIDE_INT for charlen, use snprintf.
        (resolve_charlen): Use mpz_sgn to determine sign.
        * simplify.c (gfc_simplify_repeat): Use HOST_WIDE_INT/gfc_charlen_t
        instead of long.
        * symbol.c (generate_isocbinding_symbol): Use gfc_charlen_int_kind.
        * target-memory.c (size_character): Length argument of type
        gfc_charlen_t.
        (gfc_encode_character): Likewise.
        (gfc_interpret_character): Use gfc_charlen_t.
        * target-memory.h (gfc_encode_character): Modify prototype.
        * trans-array.c (gfc_trans_array_ctor_element): Use existing type.
        (get_array_ctor_var_strlen): Use gfc_conv_mpz_to_tree_type.
        (trans_array_constructor): Use existing type.
        (get_array_charlen): Likewise.
        * trans-const.c (gfc_conv_mpz_to_tree_type): New function.
        * trans-const.h (gfc_conv_mpz_to_tree_type): New prototype.
        * trans-decl.c (gfc_trans_deferred_vars): Use existing type.
        (add_argument_checking): Likewise.
        * trans-expr.c (gfc_class_len_or_zero_get): Build const of type
        gfc_charlen_type_node.
        (gfc_conv_intrinsic_to_class): Use gfc_charlen_int_kind instead of
        4, fold_convert to correct type.
        (gfc_conv_class_to_class): Build const of type size_type_node for
        size.
        (gfc_copy_class_to_class): Likewise.
        (gfc_conv_string_length): Use same type in expression.
        (gfc_conv_substring): Likewise, use HOST_WIDE_INT for charlen.
        (gfc_conv_string_tmp): Make sure len is of the right type.
        (gfc_conv_concat_op): Use same type in expression.
        (gfc_conv_procedure_call): Likewise.
        (fill_with_spaces): Comment out memset() block due to spurious
        -Wstringop-overflow warnings.
        (gfc_trans_string_copy): Use gfc_charlen_type_node.
        (alloc_scalar_allocatable_for_subcomponent_assignment):
        fold_convert to right type.
        (gfc_trans_subcomponent_assign): Likewise.
        (trans_class_vptr_len_assignment): Build const of correct type.
        (gfc_trans_pointer_assignment): Likewise.
        (alloc_scalar_allocatable_for_assignment): fold_convert to right
        type in expr.
        (trans_class_assignment): Build const of correct type.
        * trans-intrinsic.c (gfc_conv_associated): Likewise.
        (gfc_conv_intrinsic_repeat): Do calculation in sizetype.
        * trans-io.c (gfc_build_io_library_fndecls): Use
        gfc_charlen_type_node for character lengths.
        (set_string): Convert to right type in assignment.
        * trans-stmt.c (gfc_trans_label_assign): Build const of
        gfc_charlen_type_node.
        (trans_associate_var): Likewise.
        (gfc_trans_character_select): Likewise.
        (gfc_trans_allocate): Likewise, don't typecast strlen result.
        (gfc_trans_deallocate): Don't typecast strlen result.
        * trans-types.c (gfc_size_kind): New variable.
        (gfc_init_types): Determine gfc_charlen_int_kind and gfc_size_kind
        from size_type_node.
        * trans-types.h: Fix comment.

2018-01-04  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/83683
        PR fortran/45689
        * check.c (gfc_check_eoshift): Check for string length and
        for conformance of boundary.
        * intrinsic.c (add_functions): Add gfc_simplify_eoshift.
        * intrinsic.h: Add prototype for gfc_simplify_eoshift.
        * simplify.c (gfc_simplify_eoshift): New function.

2018-01-03  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): Handle MODE_VECTOR_BOOL.

2018-01-03  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): Check valid_vector_subparts_p.

2018-01-03  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/83664
        * check.c (gfc_check_eoshift): Error for missing boundary if array
        is not one of the standard types.

2018-01-03  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.

2017-01-02  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/45689
        * intrinsic.c (add_function): Add gfc_simplify_maxloc and
        gfc_simplify_minloc to maxloc and minloc, respectively.
        * intrinsic.h: Add prototypes for gfc_simplify_minloc
        and gfc_simplify_maxloc.
        * simplify.c (min_max_chose): Adjust prototype.  Modify function
        to have a return value which indicates if the extremum was found.
        (is_constant_array_expr): Fix typo in comment.
        (simplify_minmaxloc_to_scalar): New function.
        (simplify_minmaxloc_nodim): New function.
        (new_array): New function.
        (simplify_minmaxloc_to_array): New function.
        (gfc_simplify_minmaxloc): New function.
        (simplify_minloc): New function.
        (simplify_maxloc): New function.

2018-01-02  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/45689
        PR fortran/83650
        * simplify.c (gfc_simplify_cshift): Re-implement to allow full
        range of arguments.

2018-01-01  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/83076
        * resolve.c (resolve_fl_derived0): Add caf_token fields for
        allocatable and pointer scalars, when -fcoarray selected.
        * trans-types.c (gfc_copy_dt_decls_ifequal): Copy the token
        field as well as the backend_decl.
        (gfc_get_derived_type): Flag GFC_FCOARRAY_LIB for module
        derived types that are not vtypes. Components with caf_token
        attribute are pvoid types. For a component requiring it, find
        the caf_token field and have the component token field point to
        its backend_decl.

        PR fortran/83319
        *trans-types.c (gfc_get_array_descriptor_base): Add the token
        field to the descriptor even when codimen not set.
\f
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