[gcc.git] / gcc / fortran / ChangeLog

2020-11-29  Harald Anlauf  <anlauf@gmx.de>

        * expr.c (simplify_parameter_variable): Fix up character length
        after copying an array-valued expression.

2020-11-28  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/97454
        * trans-decl.c (gfc_get_extern_function_decl): Add argument
        fnspec.
        * trans-intrinsic.c (MAX_SPEC_ARG): Define.
        (intrinsic_fnspec): New function.
        (ADD_CHAR): Define.
        (specific_intrinsic_symbol): Adjust comment. Pass
        fn spec to gfc_get_extern_function_decl.
        (gfc_conv_intrinsic_funcall): Add ANY, ALL, NORM2, PRODUCT
        and SUM intrnisic. Add FIXME for cshift et al.
        * trans-types.c (gfc_get_function_type): Add fnspec argument,
        handle it.
        * trans-types.h (gfc_get_function_type): Add optinal fnspec
        argument.
        * trans.h (gfc_get_extern_function_decl): Likewise.

2020-11-25  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/85796
        * resolve.c (traverse_data_list): Fix copy&paste errors; catch
        step=0 in implied do loop.

2020-11-20  Jakub Jelinek  <jakub@redhat.com>

        PR other/97911
        * Make-lang.in (fortran.serial): Change from goal to a variable.
        (.PHONY): Drop fortran.serial and fortran.prev.
        (f951$(exeext)): Depend on $(fortran.serial) rather than
        fortran.serial.

2020-11-18  Jakub Jelinek  <jakub@redhat.com>

        * Make-lang.in (fortran.serial): New goal.
        (.PHONY): Add fortran.serial fortran.prev.
        (f951$(exeext)): Depend on fortran.prev.  Call LINK_PROGRESS.

2020-11-17  Harald Anlauf  <anlauf@gmx.de>

        * gfortran.texi: Fix description of GFC_RTCHECK_* to match actual
        code.

2020-11-16  Harald Anlauf  <anlauf@gmx.de>

        * trans-intrinsic.c (gfc_conv_intrinsic_size): Generate runtime
        checking code for status of argument.

2020-11-13  Gergö Barany  <gergo@codesourcery.com>
            Thomas Schwinge  <thomas@codesourcery.com>

        * lang.opt (fopenacc-kernels): Add.

2020-11-12  Jakub Jelinek  <jakub@redhat.com>

        * f95-lang.c (ATTR_ALLOC_WARN_UNUSED_RESULT_SIZE_2_NOTHROW_LIST):
        Define.
        (gfc_init_builtin_functions): Add alloc_size and warn_unused_result
        attributes to __builtin_GOMP_alloc.
        * types.def (BT_PTRMODE): New primitive type.
        (BT_FN_VOID_PTR_PTRMODE, BT_FN_PTR_SIZE_SIZE_PTRMODE): New function
        types.

2020-11-12  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/97782
        * trans-openmp.c (gfc_trans_oacc_construct, gfc_trans_omp_parallel_do,
        gfc_trans_omp_parallel_do_simd, gfc_trans_omp_parallel_sections,
        gfc_trans_omp_parallel_workshare, gfc_trans_omp_sections
        gfc_trans_omp_single, gfc_trans_omp_task, gfc_trans_omp_teams
        gfc_trans_omp_target, gfc_trans_omp_target_data,
        gfc_trans_omp_workshare): Use code->loc instead of input_location
        when building the OMP_/OACC_ construct.

2020-11-11  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/97768
        * misc.c (gfc_typename): Use ex->value.character.length only if
        ex->expr_type == EXPR_CONSTANT.  If ex->ts.deferred, print : instead
        of length.  If ex->ts.u.cl && ex->ts.u.cl->length == NULL, print *
        instead of length.  Otherwise if character length is non-constant,
        print just CHARACTER or CHARACTER(KIND=N).

2020-11-10  Tobias Burnus  <tobias@codesourcery.com>

        * dump-parse-tree.c (show_omp_clauses): Handle new reduction enums.
        * gfortran.h (OMP_LIST_REDUCTION_INSCAN, OMP_LIST_REDUCTION_TASK,
        OMP_LIST_IN_REDUCTION, OMP_LIST_TASK_REDUCTION): Add enums.
        * openmp.c (enum omp_mask1): Add OMP_CLAUSE_IN_REDUCTION
        and OMP_CLAUSE_TASK_REDUCTION.
        (gfc_match_omp_clause_reduction): Extend reduction handling;
        moved from ...
        (gfc_match_omp_clauses): ... here. Add calls to it.
        (OMP_TASK_CLAUSES, OMP_TARGET_CLAUSES, OMP_TASKLOOP_CLAUSES):
        Add OMP_CLAUSE_IN_REDUCTION.
        (gfc_match_omp_taskgroup): Add task_reduction matching.
        (resolve_omp_clauses): Update for new reduction clause changes;
        remove removed nonmonotonic-schedule restrictions.
        (gfc_resolve_omp_parallel_blocks): Add new enums to switch.
        * trans-openmp.c (gfc_omp_clause_default_ctor,
        gfc_trans_omp_reduction_list, gfc_trans_omp_clauses,
        gfc_split_omp_clauses): Handle updated reduction clause.

2020-11-10  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/95847
        * trans-decl.c (gfc_get_symbol_decl): Do not (re)set the location
        of an external procedure.
        (build_entry_thunks, generate_coarray_init, create_main_function,
        gfc_generate_function_code): Use fndecl's location in BIND_EXPR.

2020-11-09  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/90111
        * parse.c (case_decl): Move ST_OACC_ROUTINE and ST_OACC_DECLARE to ...
        (case_omp_decl): ... here.
        (verify_st_order): Update comment.

2020-11-06  Thomas Schwinge  <thomas@codesourcery.com>

        * openmp.c (oacc_is_parallel, resolve_oacc_params_in_parallel):
        Remove.
        (resolve_oacc_loop_blocks): Don't call the former.

2020-11-06  Tobias Burnus  <tobias@codesourcery.com>

        * openmp.c (gfc_match_oacc_atomic): No longer accept 'update capture'.

2020-11-06  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/97652
        * module.c (mio_symbol): Fix symbol name for pdt_type.

2020-11-03  Nathan Sidwell  <nathan@acm.org>

        * cpp.c (gfc_cpp_add_dep): Only add dependency if we're recording
        them.
        (gfc_cpp_init): Likewise for target.

2020-11-03  Tobias Burnus  <tobias@codesourcery.com>

        * decl.c (ext_attr_list): Add EXT_ATTR_DEPRECATED.
        * gfortran.h (ext_attr_id_t): Ditto.
        * gfortran.texi (GCC$ ATTRIBUTES): Document it.
        * resolve.c (resolve_variable, resolve_function,
        resolve_call, resolve_values): Show -Wdeprecated-declarations warning.
        * trans-decl.c (add_attributes_to_decl): Skip those
        with no middle_end_name.

2020-11-03  Thomas Schwinge  <thomas@codesourcery.com>

        PR fortran/92793
        * trans-openmp.c (gfc_trans_omp_clauses): More precise location
        information for OpenACC 'gang', 'worker', 'vector' clauses with
        argument.

2020-11-02  Thomas Schwinge  <thomas@codesourcery.com>

        PR fortran/92793
        * trans.c (gfc_set_backend_locus): Use 'gfc_get_location'.
        (gfc_restore_backend_locus): Adjust.

2020-11-02  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/97655
        * openmp.c (gfc_match_omp_atomic): Fix mem-order handling;
        reject specifying update + capture together.

2020-10-30  Tobias Burnus  <tobias@codesourcery.com>

        * dump-parse-tree.c (show_omp_clauses): Handle atomic clauses.
        (show_omp_node): Call it for atomic.
        * gfortran.h (enum gfc_omp_atomic_op): Add GFC_OMP_ATOMIC_UNSET,
        remove GFC_OMP_ATOMIC_SEQ_CST and GFC_OMP_ATOMIC_ACQ_REL.
        (enum gfc_omp_memorder): Replace OMP_MEMORDER_LAST by
        OMP_MEMORDER_UNSET, add OMP_MEMORDER_SEQ_CST/OMP_MEMORDER_RELAXED.
        (gfc_omp_clauses): Add capture and atomic_op.
        (gfc_code): remove omp_atomic.
        * openmp.c (enum omp_mask1): Add atomic, capture, memorder clauses.
        (gfc_match_omp_clauses): Match them.
        (OMP_ATOMIC_CLAUSES): Add.
        (gfc_match_omp_flush): Update for 'last' to 'unset' change.
        (gfc_match_omp_oacc_atomic): Removed and placed content ..
        (gfc_match_omp_atomic): ... here. Update for OpenMP 5 clauses.
        (gfc_match_oacc_atomic): Match directly here.
        (resolve_omp_atomic, gfc_resolve_omp_directive): Update.
        * parse.c (parse_omp_oacc_atomic): Update for struct gfc_code changes.
        * resolve.c (gfc_resolve_blocks): Update assert.
        * st.c (gfc_free_statement): Also call for EXEC_O{ACC,MP}_ATOMIC.
        * trans-openmp.c (gfc_trans_omp_atomic): Update.
        (gfc_trans_omp_flush): Update for 'last' to 'unset' change.

2020-10-30  Jan Hubicka  <jh@suse.cz>

        * trans-types.c: Include alias.h
        (gfc_get_array_type_bounds): Set typeless storage.

2020-10-27  Harald Anlauf  <anlauf@gmx.de>

        * resolve.c (gfc_impure_variable): A dummy argument with the VALUE
        attribute may be redefined without making a procedure impure.

2020-10-27  Richard Biener  <rguenther@suse.de>

        * trans-array.c (gfc_get_descriptor_field): New helper.
        (gfc_conv_descriptor_data_get): Use it - drop strange
        REFERENCE_TYPE handling and make sure we don't trigger it.
        (gfc_conv_descriptor_data_addr): Use gfc_get_descriptor_field.
        (gfc_conv_descriptor_data_set): Likewise.
        (gfc_conv_descriptor_offset): Likewise.
        (gfc_conv_descriptor_dtype): Likewise.
        (gfc_conv_descriptor_span): Likewise.
        (gfc_get_descriptor_dimension): Likewise.
        (gfc_conv_descriptor_token): Likewise.
        (gfc_conv_descriptor_subfield): New helper.
        (gfc_conv_descriptor_stride): Use it.
        (gfc_conv_descriptor_lbound): Likewise.
        (gfc_conv_descriptor_ubound): Likewise.

2020-10-25  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/97454
        * gfortran.h (gfc_symbol): Add pass_as_value flag.
        (gfc_copy_formal_args_intr): Add optional argument
        copy_type.
        (gfc_get_intrinsic_function_symbol): Add prototype.
        (gfc_find_intrinsic_symbol): Add prototype.
        * intrinsic.c (gfc_get_intrinsic_function_symbol): New function.
        (gfc_find_intrinsic_symbol): New function.
        * symbol.c (gfc_copy_formal_args_intr): Add argument. Handle case
        where the type needs to be copied from the actual argument.
        * trans-intrinsic.c (remove_empty_actual_arguments): New function.
        (specific_intrinsic_symbol): New function.
        (gfc_conv_intrinsic_funcall): Use it.
        (strip_kind_from_actual): Adjust so that the expression pointer
        is set to NULL.
        (gfc_conv_intrinsic_minmaxloc): Likewise.
        (gfc_conv_intrinsic_minmaxval): Adjust removal of dim.
        * trans-types.c (gfc_sym_type): If sym->pass_as_value is set, do
        not pass by reference.

2020-10-22  Tobias Burnus  <tobias@codesourcery.com>

        * gfortran.h (enum gfc_omp_memorder): Add.
        (gfc_omp_clauses): Use it.
        * openmp.c (gfc_match_omp_flush): Match memorder clauses.
        * trans-openmp.c (gfc_trans_omp_flush): Handle them.
        (gfc_trans_omp_directive): Update call.

2020-10-21  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/45516
        * class.c: Add _deallocate to the vtable documentation
        comment.

2020-10-16  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95979
        * expr.c (gfc_check_init_expr): Fix check of return code from
        gfc_intrinsic_func_interface.
        * intrinsic.c (gfc_intrinsic_func_interface): Add further attempt
        of simplification of elemental intrinsics with array arguments.
        * iresolve.c (gfc_resolve_index_func): Keep optional KIND argument
        for simplification of elemental use of INDEX.

2020-10-15  Andre Vehreschild  <vehre@gcc.gnu.org>

        * trans-decl.c (gfc_build_builtin_function_decls): Fix the coarray fndecls.

2020-10-14  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/97390
        * scanner.c (load_line): Fix line-truncation warning for !$acc
        and !gcc$ in free-form source code.

2020-10-14  Steven G. Kargl  <kargl@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/95614
        * decl.c (gfc_get_common): Use gfc_match_common_name instead
        of match_common_name.
        * decl.c (gfc_bind_idents): Use gfc_match_common_name instead
        of match_common_name.
        * match.c : Rename match_common_name to gfc_match_common_name.
        * match.c (gfc_match_common): Use gfc_match_common_name instead
        of match_common_name.
        * match.h : Rename match_common_name to gfc_match_common_name.
        * resolve.c (resolve_common_vars): Check each symbol in a
        common block has a global symbol.  If there is a global symbol
        issue an error if the symbol type is a module or a program.

2020-10-12  Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/96099
        * decl.c (gfc_match_implicit): Check for numeric and logical
        types.

2020-10-07  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/47469
        * trans-expr.c (arrayfunc_assign_needs_temporary): Tidy detection
        of pointer and allocatable functions.

2020-10-04  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/97272
        * trans-intrinsic.c (strip_kind_from_actual): Helper function for
        removal of KIND argument.
        (gfc_conv_intrinsic_minmaxloc): Ignore KIND argument here, as it
        is treated elsewhere.

2020-10-02  Jan Hubicka  <hubicka@ucw.cz>

        * trans-decl.c (gfc_build_library_function_decl_with_spec): Verify
        fnspec.
        (gfc_build_intrinsic_function_decls): Update fnspecs.
        (gfc_build_builtin_function_decls): Update fnspecs.
        * trans-io.c (gfc_build_io_library_fndecls): Update fnspecs.
        * trans-types.c (create_fn_spec): Update fnspecs.

2020-09-30  Jan Hubicka  <jh@suse.cz>

        * trans-decl.c (gfc_build_intrinsic_function_decls): Add traling dots
        to spec strings so they match the number of parameters; do not use
        R and W for non-pointer parameters. Drop pointless specifier on
        caf_stop_numeric and caf_get_team.

2020-09-30  Jan Hubicka  <hubicka@ucw.cz>

        * trans-io.c (gfc_build_io_library_fndecls): Add trailing dots so
        length of spec string matches number of arguments.

2020-09-30  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/97242
        * expr.c (gfc_is_not_contiguous): Fix check.
        (gfc_check_pointer_assign): Use it.

2020-09-30  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/97045
        * trans-array.c (gfc_conv_array_ref): Make sure that the class
        decl is passed to build_array_ref in the case of unlimited
        polymorphic entities.
        * trans-expr.c (gfc_conv_derived_to_class): Ensure that array
        refs do not preceed the _len component. Free the _len expr.
        * trans-stmt.c (trans_associate_var): Reset 'need_len_assign'
        for polymorphic scalars.
        * trans.c (gfc_build_array_ref): When the vptr size is used for
        span, multiply by the _len field of unlimited polymorphic
        entities, when non-zero.

2020-09-30  Tom de Vries  <tdevries@suse.de>

        * f95-lang.c (gfc_init_builtin_functions):  Update
        targetm.libc_has_function call.

2020-09-28  Mark Eggleston  <markeggleston@gcc.gnu.org>

        Revert:
        2020-09-27  Steven G. Kargl  <kargl@gcc.gnu.org>
                    Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/95614
        * decl.c (gfc_get_common): Use gfc_match_common_name instead
        of match_common_name.
        * decl.c (gfc_bind_idents): Use gfc_match_common_name instead
        of match_common_name.
        * match.c : Rename match_common_name to gfc_match_common_name.
        * match.c (gfc_match_common): Use gfc_match_common_name instead
        of match_common_name.
        * match.h : Rename match_common_name to gfc_match_common_name.
        * resolve.c (resolve_common_vars): Check each symbol in a
        common block has a global symbol.  If there is a global symbol
        issue an error if the symbol type is known as is not a common
        block name.

2020-09-27  Steven G. Kargl  <kargl@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/95614
        * decl.c (gfc_get_common): Use gfc_match_common_name instead
        of match_common_name.
        * decl.c (gfc_bind_idents): Use gfc_match_common_name instead
        of match_common_name.
        * match.c : Rename match_common_name to gfc_match_common_name.
        * match.c (gfc_match_common): Use gfc_match_common_name instead
        of match_common_name.
        * match.h : Rename match_common_name to gfc_match_common_name.
        * resolve.c (resolve_common_vars): Check each symbol in a
        common block has a global symbol.  If there is a global symbol
        issue an error if the symbol type is known as is not a common
        block name.

2020-09-24  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/96495
        * trans-expr.c (gfc_conv_procedure_call): Take the deallocation
        of allocatable result components of a scalar result outside the
        scalarization loop. Find and use the stored result.

2020-09-21  Harald Anlauf  <anlauf@gmx.de>
            Paul Thomas   <pault@gcc.gnu.org>

        * iresolve.c (gfc_resolve_mvbits): Remove unneeded conversion of
        FROMPOS, LEN and TOPOS arguments to fit a C int.
        * trans-intrinsic.c (gfc_conv_intrinsic_mvbits): Add inline
        expansion of MVBITS intrinsic elemental subroutine and add code
        for runtime argument checking.
        (gfc_conv_intrinsic_subroutine): Recognise MVBITS intrinsic, but
        defer handling to gfc_trans_call.
        * trans-stmt.c (replace_ss):
        (gfc_trans_call): Adjust to handle inline expansion, scalarization
        of intrinsic subroutine MVBITS in gfc_conv_intrinsic_mvbits.
        * trans.h (gfc_conv_intrinsic_mvbits): Add prototype for
        gfc_conv_intrinsic_mvbits.

2020-09-19  Sandra Loosemore  <sandra@codesourcery.com>

        * interface.c (gfc_compare_actual_formal): Add assertion after
        main processing loop to silence maybe-uninitialized error.

2020-09-19  Harald Anlauf  <anlauf@gmx.de>

        * symbol.c (gfc_check_conflict): Allow ELEMENTAL RECURSIVE
        procedure prefix for -std=f2018.

2020-09-17  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/96041
        PR fortran/93423
        * decl.c (gfc_match_submod_proc): Avoid later double-free
        in the error case.

2020-09-16  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/97061
        * trans-openmp.c (gfc_trans_omp_do): Handle simd with (last)private.

2020-09-15  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/96668
        * trans.h (gfc_omp_finish_clause): Add bool openacc arg.
        * trans-openmp.c (gfc_omp_finish_clause): Ditto. Use
        GOMP_MAP_ALWAYS_POINTER with PSET for pointers.
        (gfc_trans_omp_clauses): Like the latter and also if the always
        modifier is used.

2020-09-09  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/95109
        PR fortran/94690
        * resolve.c (gfc_resolve_code): Also call
        gfc_resolve_omp_parallel_blocks for 'distribute parallel do (simd)'.
        * openmp.c (gfc_resolve_omp_parallel_blocks): Handle it.
        (gfc_resolve_do_iterator): Remove special code for SIMD, which is
        not needed.
        * trans-openmp.c (gfc_trans_omp_target): For TARGET_PARALLEL_DO_SIMD,
        call simd not do processing function.

2020-09-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * intrinsic.texi: Fix description of FINDLOC result.

2020-09-07  Harald Anlauf  <anlauf@gmx.de>

        * trans-intrinsic.c (build_round_expr): Use temporary with
        appropriate kind for conversion before rounding to nearest
        integer when the result precision is 128 bits.

2020-09-07  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/96896
        * resolve.c (get_temp_from_expr): Also reset proc_pointer +
        use_assoc attribute.
        (resolve_ptr_fcn_assign): Use information from the LHS.

2020-09-07  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>

        * trans-types.c (gfc_get_derived_type): Fix argument types.

2020-09-07  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>

        * resolve.c (resolve_select_type): Provide a formal arg list.

2020-09-06  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>

        * trans-types.c (gfc_get_ppc_type): Add comment.

2020-09-06  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>

        * trans-types.c (gfc_get_ppc_type): Fix function arg types.

2020-09-06  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>

        PR fortran/96947
        * trans-stmt.c (gfc_trans_fail_image): caf_fail_image
        expects no argument.

2020-09-02  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/96859
        * check.c (gfc_boz2real, gfc_boz2int): When clearing first two bits,
        change also '2' to '0' and '3' to '1' rather than just handling '4'
        through '7'.

2020-09-01  Steven G. Kargl  <kargl@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/95398
        * resolve.c (resolve_select_type): Add check for BT_CLASS
        type before using the CLASS_DATA macro which will have a
        NULL pointer to derive components if it isn't BT_CLASS.

2020-08-30  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

        PR fortran/96728
        * module.c (module_peek_char): Peek ahead function.
        (parse_integer): Add code for parsing signed integers.
        (parse_atom): Add code to handle signed integers.
        (peek_atom): Add code to handle signed integers.

2020-08-30  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

        PR fortran/96727
        * expr.c (gfc_check_init_expr): Add default error message for the AS_ASSUMED_RANK case.

2020-08-30  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

        PR fortran/96726
        * expr.c (check_references): Change different relational operator
        to less-than operator to avoid infinite loop.

2020-08-30  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

        PR fortran/95352
        * simplify.c (simplify_bound_dim): Add check for NULL pointer
        before trying to access structure member.

2020-08-30  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

        PR fortran/94110
        * interface.c (gfc_compare_actual_formal): Add code to also raise
        the actual argument cannot be an assumed-size array error when the
        dummy arguments are deferred-shape or assumed-rank pointer.

2020-08-28  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/94672
        * trans-array.c (gfc_trans_g77_array): Check against the parm decl and
        set the nonparm decl used for the is-present check to NULL if absent.

2020-08-28  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/96624
        * simplify.c (gfc_simplify_reshape): Detect zero shape and
        clear index if found.

2020-08-27  Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/95882
        * decl.c (char_len_param_value): Check gfc_seen_div0 and
        if it is set return MATCH_ERROR.

2020-08-27  Martin Liska  <mliska@suse.cz>

        * trans-openmp.c (gfc_trans_omp_do): Set exact argument of a vector
        growth function to true.

2020-08-26  Tobias Burnus  <tobias@codesourcery.com>

        * gfortran.h (enum gfc_omp_device_type): New.
        (symbol_attribute, gfc_omp_clauses, gfc_common_head): Use it.
        * module.c (enum ab_attribute): Add AB_OMP_DEVICE_TYPE_HOST,
        AB_OMP_DEVICE_TYPE_NOHOST and AB_OMP_DEVICE_TYPE_ANY.
        (attr_bits, mio_symbol_attribute): Handle it.
        (load_commons, write_common_0): Handle omp_device_type flag.
        * openmp.c (enum omp_mask1): Add OMP_CLAUSE_DEVICE_TYPE
        (OMP_DECLARE_TARGET_CLAUSES): Likewise.
        (gfc_match_omp_clauses): Match 'device_type'.
        (gfc_match_omp_declare_target): Handle it.
        * trans-common.c (build_common_decl): Write device-type clause.
        * trans-decl.c (add_attributes_to_decl): Likewise.

2020-08-23  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/96737
        * trans-types.c (gfc_get_derived_type): Derived types that are
        used in submodules are not compatible with TYPE_CANONICAL from
        any of the global namespaces.

2020-08-20  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/96100
        PR fortran/96101
        * trans-array.c (get_array_charlen): Tidy up the evaluation of
        the string length for array constructors. Avoid trailing array
        references. Ensure string lengths of deferred length components
        are set. For parentheses operator apply string  length to both
        the primary expression and the enclosed expression.

2020-08-20  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/94958
        * trans-array.c (gfc_bcast_alloc_comp): Use the correct variable.

2020-08-20  Tobias Burnus  <tobias@codesourcery.com>

        * openmp.c (gfc_match_omp_clauses): Re-order 'if' clause pasing
        to avoid creating spurious symbols.

2020-08-18  Harald Anlauf  <anlauf@gmx.de>

        * check.c (check_rest): Reject MIN/MAX character arguments of
        different kind.
        * simplify.c (min_max_choose): The simplification result shall
        have the highest kind value of the arguments.
        * trans-intrinsic.c (gfc_conv_intrinsic_minmax): Choose type and
        kind of intermediate by looking at all arguments, not the result.

2020-08-17  Martin Liska  <mliska@suse.cz>

        * openmp.c (resolve_omp_clauses): Add static assert
        for OMP_LIST_NUM and size of clause_names array.
        Remove check that is always true.

2020-08-17  Martin Liska  <mliska@suse.cz>

        * openmp.c (resolve_omp_clauses): Add NONTEMPORAL to clause
        names.

2020-08-13  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/93671
        * trans-array.c (structure_alloc_comps): Keep caf-mode when applying to
        components; get the caf_token correctly for allocated scalar components.

2020-08-13  Matthew Krupcale  <mkrupcale@matthewkrupcale.com>

        PR fortran/96595
        * invoke.texi: Fix typos.

2020-08-12  Tobias Burnus  <tobias@codesourcery.com>

        * gfortran.h: Add OMP_LIST_NONTEMPORAL.
        * dump-parse-tree.c (show_omp_clauses): Dump it
        * openmp.c (enum omp_mask1): Add OMP_CLAUSE_NOTEMPORAL.
        (OMP_SIMD_CLAUSES): Add it.
        (gfc_match_omp_clauses): Match nontemporal clause.
        * trans-openmp.c (gfc_trans_omp_clauses): Process
        nontemporal clause.

2020-08-10  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/96556
        * frontend-passes.c (doloop_contained_function_call):
        Do not dereference a NULL pointer for value.function.esym.

2020-08-10  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/96312
        * trans-expr.c (fcncall_realloc_result): Only compare shapes if
        lhs was allocated..

2020-08-10  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/96102
        * resolve.c (check_host_association): Replace the gcc_assert
        with an error for internal procedures.

2020-08-05  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/96469
        * frontend-passes.c (doloop_contained_function_call): New
        function.
        (doloop_contained_procedure_code): New function.
        (CHECK_INQ): Macro for inquire checks.
        (doloop_code): Invoke doloop_contained_procedure_code and
        doloop_contained_function_call if appropriate.
        (do_intent): Likewise.

2020-08-04  Tobias Burnus  <tobias@codesourcery.com>

        * openmp.c (resolve_omp_do): Detect not perfectly
        nested loop with innermost collapse.

2020-08-04  Tobias Burnus  <tobias@codesourcery.com>

        * trans-openmp.c (gfc_trans_omp_do): Fix 'lastprivate(conditional:'.

2020-08-03  Julian Brown  <julian@codesourcery.com>
            Thomas Schwinge  <thomas@codesourcery.com>

        * trans-openmp.c (gfc_trans_omp_clauses): Don't create present/release
        mappings for array descriptors.

2020-08-03  Martin Jambor  <mjambor@suse.cz>

        * f95-lang.c (gfc_init_builtin_functions): Remove processing of
        hsa-builtins.def.

2020-08-03  Tobias Burnus  <tobias@codesourcery.com>

        * gfc-internals.texi: Fix typos.
        * gfortran.texi: Likewise.
        * intrinsic.texi: Likewise.
        * invoke.texi: Likewise.

2020-08-02  Paul Thomas  <pault@gcc.gnu.org>

        PR target/96320
        * interface.c (gfc_check_dummy_characteristics): If a module
        procedure arrives with assumed shape in the interface and
        deferred shape in the procedure itself, update the latter and
        copy the lower bounds.

2020-08-02  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/96325
        * primary.c (gfc_match_varspec): In the case that a component
        reference is added to an intrinsic type component, emit the
        error message in this function.

2020-07-29  Tobias Burnus  <tobias@codesourcery.com>

        * dump-parse-tree.c (show_omp_clauses): Handle order(concurrent).
        * gfortran.h (struct gfc_omp_clauses): Add order_concurrent.
        * openmp.c (enum omp_mask1, OMP_DO_CLAUSES, OMP_SIMD_CLAUSES):
        Add OMP_CLAUSE_ORDER.
        * trans-openmp.c (gfc_trans_omp_clauses, gfc_split_omp_clauses):
        Handle order(concurrent) clause.

2020-07-29  Tobias Burnus  <tobias@codesourcery.com>

        * openmp.c (resolve_omp_clauses): Permit 'omp target data' without
        map if use_device_{addr,ptr} is present.

2020-07-29  Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/96319
        * intrinsic.c (gfc_convert_type_warn):  Add check for
        LOGICAL type so that warnings are not output.

2020-07-29  Tobias Burnus  <tobias@codesourcery.com>

        * module.c (mio_symbol_attribute): Fix indent of previous
        commit.

2020-07-29  Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/53298
        * trans-array.c (gfc_walk_array_ref): If ref->ss.end is set
        call gfc_get_scalar_ss.

2020-07-29  Tobias Burnus  <tobias@codesourcery.com>

        * gfortran.h (enum gfc_statement): Add ST_OMP_REQUIRES.
        (enum gfc_omp_requires_kind): New.
        (enum gfc_omp_atomic_op): Add GFC_OMP_ATOMIC_ACQ_REL.
        (struct gfc_namespace): Add omp_requires and omp_target_seen.
        (gfc_omp_requires_add_clause,
        (gfc_check_omp_requires): New.
        * match.h (gfc_match_omp_requires): New.
        * module.c (enum ab_attribute, attr_bits): Add omp requires clauses.
        (mio_symbol_attribute): Read/write them.
        * openmp.c (gfc_check_omp_requires, (gfc_omp_requires_add_clause,
        gfc_match_omp_requires): New.
        (gfc_match_omp_oacc_atomic): Use requires's default mem-order.
        * parse.c (decode_omp_directive): Match requires, set omp_target_seen.
        (gfc_ascii_statement): Handle ST_OMP_REQUIRES.
        * trans-openmp.c (gfc_trans_omp_atomic): Handle GFC_OMP_ATOMIC_ACQ_REL.

2020-07-27  Tobias Burnus  <tobias@codesourcery.com>

        * openmp.c (gfc_resolve_omp_directive): Remove NULL check
        for clauses in EXEC_OMP_CRITICAL as it no longer can be NULL.

2020-07-23  Tobias Burnus  <tobias@codesourcery.com>

        * gfortran.h (gfc_omp_namelist): Add lastprivate_conditional.
        * openmp.c (gfc_match_omp_clauses): Handle 'conditional:'
        modifier of 'lastprivate'.
        * trans-openmp.c (gfc_omp_clause_default_ctor): Don't assert
        on OMP_CLAUSE__CONDTEMP_ and other OMP_*TEMP_.
        (gfc_trans_omp_variable_list): Handle lastprivate_conditional.

2020-07-23  Tobias Burnus  <tobias@codesourcery.com>

        * intrinsic.texi (OMP_LIB_KINDS): Add omp_depend_kind.

2020-07-23  Tobias Burnus  <tobias@codesourcery.com>

        * gfortran.texi (Standards): Update URL; state that OpenMP 4.5
        is supported and 5.0 is partially.
        * intrinsic.texi (OpenMP Modules): Refer also to OpenMP 5.0;
        (OMP_LIB): Add missing derived type and new named constants.

2020-07-22  Tobias Burnus  <tobias@codesourcery.com>

        * gfortran.h (enum gfc_omp_if_kind): Add OMP_IF_CANCEL and OMP_IF_SIMD.
        * openmp.c (OMP_SIMD_CLAUSES): Add OMP_CLAUSE_IF.
        (gfc_match_omp_clauses, resolve_omp_clauses): Handle 'if (simd/cancel:'.
        * dump-parse-tree.c (show_omp_clauses): Likewise.
        * trans-openmp.c (gfc_trans_omp_clauses, gfc_trans_omp_cancel,
        (gfc_split_omp_clauses): Likewise.

2020-07-22  Tobias Burnus  <tobias@codesourcery.com>

        * openmp.c (gfc_match_omp_critical): Fix handling hints; permit
        hint clause without named critical.
        (resolve_omp_clauses): Require nonnegative constant integer
        for the hint clause.
        (gfc_resolve_omp_directive): Check for no name but
        nonzero value for hint clause.
        * parse.c (parse_omp_structured_block): Fix same-name check
        for critical.
        * trans-openmp.c (gfc_trans_omp_critical): Handle hint clause properly.

2020-07-21  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/89574
        * trans-decl.c (gfc_get_extern_function_decl): Check whether a
        symbol belongs to a different module.

2020-07-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/96220
        * dump-parse-tree.c (get_c_type_name): Always use the entries from
        c_interop_kinds_table to find the correct C type.

2020-07-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/96018
        * frontend-passes.c (gfc_check_externals): Adjust formatting.
        (implicit_pure_call): New function.
        (implicit_pure_expr): New function.
        (gfc_fix_implicit_pure): New function.
        * gfortran.h (gfc_fix_implicit_pure): New prototype.
        * parse.c (translate_all_program_units): Call gfc_fix_implicit_pure.

2020-07-18  David Edelsohn  <dje.gcc@gmail.com>

        * check.c (gfc_invalid_boz): Mark hint for translation using _().

2020-07-16  Julian Brown  <julian@codesourcery.com>
            Thomas Schwinge  <thomas@codesourcery.com>

        * trans-openmp.c (gfc_trans_omp_clauses): Rework OpenACC
        attach/detach handling for arrays with descriptors.

2020-07-14  Steven G. Kargl  <kargl@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/95612
        * expr.c (gfc_check_pointer_assigb): Output an error if
        rvalue is a zero sized array or output an error if rvalue
        doesn't have a symbol tree.

2020-07-14  Tobias Burnus  <tobias@codesourcery.com>

        * openmp.c (gfc_match_omp_clauses): Match also derived-type
        component refs in OMP_CLAUSE_MAP.
        (resolve_omp_clauses): Resolve those.
        * trans-openmp.c (gfc_trans_omp_array_section, gfc_trans_omp_clauses):
        Handle OpenMP structure-element mapping.
        (gfc_trans_oacc_construct, gfc_trans_oacc_executable_directive,
        (gfc_trans_oacc_combined_directive, gfc_trans_oacc_declare): Update
        add openacc=true in gfc_trans_omp_clauses call.

2020-07-14  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/67311
        * trans-openmp.c (gfc_has_alloc_comps): Return false also for
        pointers to arrays.

2020-07-14  Steven G. Kargl  <kargl@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/96038
        * decl.c (add_init_expr_sym):  For a symbol that is a
        parameter accept an initialisation if it does not have a
        value otherwise output a error and reject.

2020-07-13  Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/45337
        * resolve.c (resolve_fl_variable): Remove type and intent
        checks from the check for dummy.

2020-07-13  Steven G. Kargl  <kargl@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/95981
        * check.c (dim_rank_check): Allow NULL references in call to
        gfc_find_array_ref and return false if no reference is found.

2020-07-11  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/96073
        * frontend-passes.c (check_externals_procedure):  Add locus
        information for new_sym.
        * interface.c (gfc_check_dummy_characteristics): Do not warn
        about INTENT for artificially generated variables.

2020-07-10  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95980
        * class.c (gfc_add_component_ref, gfc_build_class_symbol):
        Add checks for NULL pointer dereference.
        * primary.c (gfc_variable_attr): Likewise.
        * resolve.c (resolve_variable, resolve_assoc_var)
        (resolve_fl_var_and_proc, resolve_fl_variable_derived)
        (resolve_symbol): Likewise.

2020-07-10  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/96086
        * match.c (gfc_match_select_rank): Catch NULL pointer
        dereference.
        * resolve.c (resolve_assoc_var): Catch NULL pointer dereference
        that may occur after an illegal declaration.

2020-07-09  Julian Brown  <julian@codesourcery.com>

        * trans-openmp.c (gfc_trans_omp_clauses): Use 'inner' not 'decl' for
        derived type members which themselves have derived types.

2020-07-08  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/96085
        * resolve.c (gfc_resolve_code): Check whether assign target is a
        parameter.

2020-07-06  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95980
        * match.c (copy_ts_from_selector_to_associate, build_class_sym):
        Distinguish between unlimited polymorphic and ordinary variables
        to avoid NULL pointer dereference.
        * resolve.c (resolve_select_type):
        Distinguish between unlimited polymorphic and ordinary variables
        to avoid NULL pointer dereference.

2020-07-06  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95709
        * resolve.c (gfc_resolve_code): Check for valid arguments to
        assigned GOTO.

2020-07-05  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/27318
        * frontend-passes.c (check_against_globals): New function.
        (gfc_check_externals): Split; also invoke check_against_globals
        via gfc_traverse_ns.
        (gfc_check_externals0): Recursive part formerly in
        gfc_check_externals.
        * resolve.c (resolve_global_procedure): Set sym->error on
        interface mismatch.
        * symbol.c (ambiguous_symbol): Check for, and set sym->error.

2020-07-02  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/93423
        * resolve.c (resolve_symbol): Avoid NULL pointer dereference.

2020-07-02  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/93337
        * class.c (gfc_find_derived_vtab): Punt if name is not set.

2020-07-02  Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/52279
        * check.c (gfc_invalid_boz):  Change array declaration for
        hint into a pointer.

2020-07-02  Steven G. Kargl  <kargl@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/95584
        * interface.c (generic_correspondence): Only use the pointer
        to a symbol if exists.

2020-07-01  David Edelsohn  <dje.gcc@gmail.com>

        * check.c (gfc_invalid_boz): Fix bootstrap. Revert
        Mark hint for translation using _().

2020-07-01  Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/52279
        * arith.c (reduce_binary_aa): Mark for translation the string
        parameter to gfc_check_conformance with G_().
        * check.c (gfc_invalid_boz): Mark hint for translation using
        _().  (gfc_check_achar): Mark for translation the message
        parameter to gfc_invalid_boz using G_().  (gfc_check_char):
        Mark for translation the message parameter to gfc_invalid_boz
        using G_().  (gfc_check_complex): Mark for translation the
        message parameter to gfc_invalid_boz using G_().
        (gfc_check_float): Mark for translation the message
        parameter to gfc_invalid_boz using G_().  (check_rest): Mark
        for translation the string parameter to gfc_check_conformance
        with _().  (gfc_check_minloc_maxloc): Mark for translation
        the string parameter to gfc_check_conformance with _().
        (gfc_check_findloc): Mark for translation the string parameter
        to gfc_check_conformance with _().  (check_reduction): Mark
        for translation the string parameter to gfc_check_conformance
        with _().  (gfc_check_pack): Mark for translation the string
        parameter to gfc_check_conformance with _().
        * decl.c (match_old_style_init): Mark for translation the
        message parameter to gfc_invalid_boz using G_().
        * expr.c (gfc_check_assign): Mark for translation the string
        parameter to gfc_check_conformance with _().
        * intrinsic.c (check_specific): Mark for translation the string
        parameter to gfc_check_conformance with _().
        (gfc_check_intrinsic_standard): Mark symstd_msg strings for
        translation using G_(). No need to mark symstd_msg for
        translation in call to gfc_warning or when setting symstd.
        * io.c (check_open_constraints):  Mark strings for translation
        using G_() in all calls to warn_or_error.  (match_io_element):
        Mark for translation the message parameter to gfc_invalid_boz
        using G_().
        * primary.c (match_boz_constant): Mark for translation the
        message parameter to gfc_invalid_boz using G_().
        * resolve.c (resolve_elemental_actual):  Mark for translation
        the string parameter to gfc_check_conformance with _().
        (resolve_operator):  Mark for translation the string parameter
        to gfc_check_conformance with _().  Mark translation strings
        assigned to msg using G_() for use in a call to cfg_warning.

2020-07-01  Steven G. Kargl  <kargl@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/95446
        * resolve.c (resolve_elemental_actual): Add code to check for
        non-optional argument of the same rank.  Revise warning message
        to refer to the Fortran 2018 standard.

2020-07-01  Steven G. Kargl  <kargl@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/95829
        * decl.c (gfc_match_decl_type_spec): Compare with "* ) " instead
        of "*)".

2020-06-30  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/88379
        * resolve.c (resolve_assoc_var): Avoid NULL pointer dereference.

2020-06-30  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/95355
        * gfortran.h (gfc_typename): Add optional argument for_hash.
        * misc.c (gfc_typename): When for_hash is true, just retur
          CHARACTER(kind).
        * class.c (gfc_intrinsic_hash_value): Call gfc_typename with
          for_hash = true.

2020-06-29  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95978
        * decl.c (gfc_match_data): Avoid NULL pointer dereference.

2020-06-29  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/95743
        * trans-decl.c (gfc_generate_function_code): Do not generate
        recursion check for compiler-generated procedures.

2020-06-29  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/71706
        * trans-stmt.c (gfc_trans_sync): Do proper kind conversion in
        bounds-checking code.

2020-06-28  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95340
        * match.c (gfc_match_select_rank): Do not dereference NULL pointer.

2020-06-28  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95880
        * symbol.c (gfc_add_type): If sym->ns->proc_name is set, use it,
        otherwise fall back to sym->name.

2020-06-27  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95881
        * resolve.c (resolve_symbol): Avoid NULL pointer dereference.

2020-06-25  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95828
        * match.c (select_rank_set_tmp): Enlarge internal buffer used in
        generating a mangled name.
        * resolve.c (resolve_select_rank): Likewise.

2020-06-25  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95826
        * decl.c (gfc_match_decl_type_spec): Replace a fixed size
        buffer by a pointer and reallocate if necessary.

2020-06-25  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/95837
        * resolve.c (gfc_resolve_substring_charlen): Remove
        bogus ts.kind setting for the expression.

2020-06-25  Tobias Burnus  <tobias@codesourcery.com>
            Kwok Cheung Yeung  <kcy@codesourery.com>

        PR fortran/95869
        * trans-openmp.c (gfc_trans_omp_target): Use correct scoping block.

2020-06-25  Kwok Cheung Yeung  <kcy@codesourcery.com>

        * trans-openmp.c (gfc_split_omp_clauses): Add if clause
        to target and simd sub-constructs.

2020-06-24  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95827
        * iresolve.c (gfc_get_string): Enlarge internal buffer used in
        generating the mangled name.

2020-06-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/95812
        * dependency.c (ref_same_as_full_array): Handle case of AR_FULL
        vs. AR_FULL.

2020-06-23  Steven G. Kargl  <kargl@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/95586
        * decl.c (gfc_match_implicit): Only perform else branch if
        the type spect is not BT_DERIVED.

2020-06-22  Steven G. Kargl  <kargl@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/95708
        * intrinsic.c (add_functions): Replace CLASS_INQUIRY with
        CLASS_TRANSFORMATIONAL for intrinsic num_images.
        (make_generic): Replace ACTUAL_NO with ACTUAL_YES for
        intrinsic team_number.
        * resolve.c (resolve_fl_procedure): Check pointer ts.u.derived
        exists before using it.

2020-06-22  Steven G. Kargl  <kargl@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/95585
        * check.c (gfc_check_reshape): Add check for a value when
        the symbol has an attribute flavor FL_PARAMETER.

2020-06-22  Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/42693
        * arith.c (gfc_arith_error): Enclose strings in G_() instead
        of _().

2020-06-20  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95707
        * gfortran.h (gfc_common_head): Enlarge buffer.
        * trans-common.c (gfc_sym_mangled_common_id): Enlarge temporary
        buffers, and add check on length on mangled name to prevent
        overflow.

2020-06-20  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95688
        * iresolve.c (gfc_get_string): Enlarge static buffer size.

2020-06-20  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95687
        * class.c (get_unique_type_string): Return a string with dynamic
        length.
        (get_unique_hashed_string, gfc_hash_value): Use dynamic result
        from get_unique_type_string instead of static buffer.

2020-06-20  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95689
        * interface.c (check_sym_interfaces): Enlarge temporary buffer,
        and add check on length on mangled name to prevent overflow.

2020-06-20  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95587
        * match.c (gfc_match_equivalence): Check constraints on
        EQUIVALENCE objects also for CLASS variables.

2020-06-18  Tobias Burnus  <tobias@codesourcery.com>

        * openmp.c (resolve_omp_clauses): Reject vars with
        allocatable components in OpenMP map clauses.

2020-06-16  Tobias Burnus  <tobias@codesourcery.com>

        * parse.c (decode_oacc_directive): Permit 'acc routine' also
        inside pure procedures.
        * openmp.c (gfc_match_oacc_routine): Inside pure procedures
        do not permit gang, worker or vector clauses.

2020-06-16  Tobias Burnus  <tobias@codesourcery.com>

        * parse.c (decode_omp_directive): Remove "or ELEMENTAL"
        from "in PURE" error message also for -fopenmp-simd.

2020-06-16  Tobias Burnus  <tobias@codesourcery.com>

        * parse.c (decode_omp_directive): Remove "or ELEMENTAL"
        from "in PURE" error message.

2020-06-14  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/42122
        * dump-parse-tree.c (gfc_dump_global_symbols):  If the symroot is
        empty, just output "empty".

2020-06-14  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95088
        * class.c (get_unique_type_string): Replace use of fixed size
        buffer by internally passing a pointer to strings.

2020-06-14  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * check.c (gfc_check_random_seed): Always use locations
        from get and put arguments for error messages.

2020-06-14  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/94109
        * class.c (finalize_component): Return early if finalization has
        already happened for expression and component within namespace.
        * gfortran.h (gfc_was_finalized): New type.
        (gfc_namespace): Add member was_finalzed.
        (gfc_expr): Remove finalized.
        * symbol.c (gfc_free_namespace): Free was_finalized.

2020-06-11  Harald Anlauf  <anlauf@gmx.de>
            Steven G. Kargl   <kargl@gcc.gnu.org>

        PR fortran/95611
        * decl.c (access_attr_decl): Use correct symbol in error message.

2020-06-11  Steven G. Kargl  <kargl@gcc.gnu.org>
            Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95544
        * check.c (invalid_null_arg): Rename to gfc_invalid_null_arg.
        (gfc_check_associated, gfc_check_kind, gfc_check_merge)
        (gfc_check_shape, gfc_check_size, gfc_check_spread)
        (gfc_check_transfer): Adjust.
        (gfc_check_len_lentrim, gfc_check_trim): Check for NULL() argument.
        * gfortran.h: Declare gfc_invalid_null_arg ().
        * intrinsic.c (check_arglist): Check for NULL() argument.

2020-06-11  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95503
        * expr.c (gfc_check_pointer_assign): Skip contiguity check of rhs
        of pointer assignment if lhs cannot be simply contiguous.

2020-06-11  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

        PR fortran/95331
        * trans-array.c (gfc_conv_array_ref): For class array dummy
        arguments use the transformed descriptor in sym->backend_decl
        instead of the original descriptor.

2020-06-11  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

        PR fortran/52351
        PR fortran/85868
        * trans-array.c (gfc_conv_expr_descriptor): Enable the
        creation of a new descriptor with the correct one based
        indexing for array sections.  Rework array descriptor
        indexing offset calculation.

2020-06-11  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

        PR fortran/94022
        * trans-expr.c (gfc_conv_procedure_call): In the case of
        assumed-size arrays ensure that the reference is to a full array.

2020-06-07  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95091
        * class.c (gfc_hash_value): Add cast.

2020-06-07  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95091
        * class.c (get_unique_type_string, gfc_hash_value): Enlarge
        buffers, and check whether the strings returned by
        get_unique_type_string() fit.

2020-06-05  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95530
        PR fortran/95537
        * decl.c (gfc_match_decl_type_spec): Enlarge buffer, and enhance
        string copy to detect buffer overflow.
        * gfortran.h (gfc_common_head): Enlarge buffer.
        * trans-common.c (finish_equivalences): Enhance string copy to
        detect buffer overflow.

2020-06-05  Tom Tromey  <tromey@adacore.com>

        PR fortran/95509
        * misc.c (gfc_closest_fuzzy_match): Update cutoff value
        computation.

2020-06-04  Steven G. Kargl  <kargl@gcc.gnu.org>
            Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95500
        * trans-expr.c (gfc_conv_expr_reference): Do not dereference NULL
        pointer.

2020-06-03  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

        PR fortran/95214
        PR fortran/66833
        PR fortran/67938
        * trans-expr.c (gfc_maybe_dereference_var): Add assumed-rank to
        character dummy arguments list of possible attributes.

2020-06-03  Tobias Burnus  <tobias@codesourcery.com>

        * f95-lang.c (LANG_HOOKS_OMP_PREDETERMINED_MAPPING): Redefine.
        * trans-openmp.c (gfc_omp_predetermined_mapping): New.
        * trans.h (gfc_omp_predetermined_mapping): Declare.

2020-05-31  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/94361
        * class.c (finalize_component): Use expr->finalized instead of
        comp->finalized.
        * gfortran.h (gfc_component): Remove finalized member.
        (gfc_expr): Add it here instead.

2020-05-30  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95373
        * primary.c (is_inquiry_ref): Move validity check of inquiry
        references against selected Fortran standard from here...
        (gfc_match_varspec) ...to here.

2020-05-30  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95090
        * class.c (get_unique_type_string): Use buffer overrun check.

2020-05-29  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95090
        * class.c (get_unique_type_string): Enlarge temporary for
        name-mangling.  Use strncpy to prevent buffer overrun.
        (get_unique_hashed_string): Enlarge temporary.
        (gfc_hash_value): Enlarge temporary for name-mangling.

2020-05-28  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95373
        * primary.c (is_inquiry_ref): Check validity of inquiry
        references against selected Fortran standard.

2020-05-28  Steven G. Kargl  <kargl@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/94397
        * match.c (gfc_match_type_spec): New variable ok initialised
        to true. Set ok with the return value of gfc_reduce_init_expr
        called only if the expression is not EXPR_CONSTANT and is not
        EXPR_VARIABLE. Add !ok to the check for type not being integer
        or the rank being greater than zero.

2020-05-27  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95090
        * iresolve.c (gfc_get_string): Enlarge temporary for
        name-mangling.

2020-05-27  Tobias Burnus  <tobias@codesourcery.com>
            Mark Eggleston  <markeggleston@gnu.gcc.org>

        PR fortran/50392
        * trans-decl.c (gfc_get_symbol_decl): Remove unnecessary block
        delimiters.  Add auxiliary variables if a label is assigned to
        a return variable. (gfc_gat_fake_result): If the symbol has an
        assign attribute set declaration from the symbol's backend
        declaration.

2020-05-26  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95089
        * trans-types.c (gfc_get_derived_type): Enlarge temporary to hold
        mangled name "_caf_symbol".

2020-05-26  Alexandre Oliva  <oliva@adacore.com>

        * options.c (gfc_get_option_string): Drop auxbase, add
        dumpbase_ext.

2020-05-24  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95106
        * trans-common.c (gfc_sym_mangled_common_id): Enlarge temporaries
        for name-mangling.

2020-05-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR libfortran/95191
        * libgfortran.h (libgfortran_error_codes): Add
        LIBERROR_BAD_WAIT_ID.

2020-05-20  Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/39695
        * resolve.c (resolve_fl_procedure): Set name depending on
        whether the result attribute is set.  For PROCEDURE/RESULT
        conflict use the name in sym->ns->proc_name->name.
        * symbol.c (gfc_add_type): Add check for function and result
        attributes use sym->ns->proc_name->name if both are set.
        Where the symbol cannot have a type use the name in
        sym->ns->proc_name->name.

2020-05-18  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95053
        * arith.c (gfc_divide): Revert hunk introduced by patch for
        PR93499.
        * decl.c (variable_decl): Generate error for array shape not being
        an INTEGER constant.
        (gfc_get_pdt_instance): Generate error if KIND or LEN expressions
        in declaration of a PDT instance do not simplify to INTEGER
        constants.

2020-05-15  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/94690
        * openmp.c (resolve_omp_do): Permit more clauses for SIMD
        iteration variables.

2020-05-14  Jakub Jelinek  <jakub@redhat.com>

        * trans-openmp.c: Include function.h.
        (gfc_trans_omp_target): Set cfun->has_omp_target.

2020-05-13  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/93497
        * decl.c (char_len_param_value): Check whether character
        length expression is of type EXPR_OP and if so simplify it.
        * resolve.c (resolve_charlen): Reject length if it has a
        rank.

2020-05-13  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/94690
        * openmp.c (OMP_DISTRIBUTE_CLAUSES): Add OMP_CLAUSE_LASTPRIVATE.
        (gfc_resolve_do_iterator): Skip the private handling for SIMD as
        that is handled by ME code.
        * trans-openmp.c (gfc_trans_omp_do): Don't add private/lastprivate
        for dovar_found == 0, unless !simple.

2020-05-11  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/95053
        * arith.c (gfc_divide): Do not error out if operand 2 is
        non-numeric.  Defer checks to later stage.

2020-05-11  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/94672
        * trans.h (gfc_conv_expr_present): Add use_saved_decl=false argument.
        * trans-expr.c (gfc_conv_expr_present): Likewise; use DECL directly
        and only if use_saved_decl is true, use the actual PARAM_DECL arg (saved
        descriptor).
        * trans-array.c (gfc_trans_dummy_array_bias): Set local 'arg.0'
        variable to NULL if 'arg' is not present.
        * trans-openmp.c (gfc_omp_check_optional_argument): Simplify by checking
        'arg.0' instead of the true PARM_DECL.
        (gfc_omp_finish_clause): Remove setting 'arg.0' to NULL.

2020-05-11  Janus Weil  <janus@gcc.gnu.org>
            Dominique d'Humieres  <dominiq@lps.ens.fr>

        PR fortran/59107
        * gfortran.h: Rename field resolved as resolve_symbol_called
        and assign two 2 bits instead of 1.
        * interface.c (check_dtio_interface1): Use new field name.
        (gfc_find_typebound_dtio_proc): Use new field name.
        * resolve.c (gfc_resolve_intrinsic): Replace check of the formal
        field with resolve_symbol_called is at least 2, if it is not
        set the field to 2.  (resolve_typebound_procedure): Use new field
        name.  (resolve_symbol): Use new field name and check whether it
        is at least 1, if it is not set the field to 1.

2020-05-10  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/93499
        * arith.c (gfc_divide): Catch division by zero.
        (eval_intrinsic_f3): Safeguard for NULL operands.

2020-05-05  Steve Kargl  <kargl@gcc.gnu.org>
        Harald Anlauf  <anlauf@gmx.de>

        PR fortran/93366
        * check.c (gfc_check_associated, invalid_null_arg): Factorize
        check for presence of invalid NULL() argument.
        (gfc_check_kind, gfc_check_merge, gfc_check_shape)
        (gfc_check_sizeof, gfc_check_spread, gfc_check_transfer): Use this
        check for presence of invalid NULL() arguments.

2020-04-29  Stefan Schulze Frielinghaus  <stefansf@linux.ibm.com>

        PR fortran/94769
        * io.c (check_io_constraints): Initialize local variable num to
        -1 and assert that it receives a meaningful value by function
        compare_to_allowed_values.

2020-04-27  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/93956
        PR fortran/94788
        * expr.c (gfc_check_pointer_assign): Revert patch for PR 93956.
        * interface.c: Likewise.

2020-04-25  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/94578
        * trans-expr.c (arrayfunc_assign_needs_temporary): If the
        LHS is a subref pointer, we also need a temporary.

2020-04-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/93956
        * expr.c (gfc_check_pointer_assign): Also set subref_array_pointer
        when a function returns a pointer.
        * interface.c (gfc_set_subref_array_pointer_arg): New function.
        (gfc_procedure_use): Call it.

2020-04-22  Fritz Reese  <foreese@gcc.gnu.org>

        * trigd_fe.inc: Use mpfr to compute cosd(30) rather than a host-
        precision floating point literal based on an invalid macro.

2020-04-22  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

        PR fortran/90350
        * simplify.c (simplify_bound): In the case of assumed-size arrays
        check if the reference is to a full array.

2020-04-22  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/94709
        * scanner.c (load_line): In fixed form, also treat 'C' as comment and
        'D'/'d' only with -fd-lines-as-comments. Treat '!$' with -fopenmp,
        '!$acc' with -fopenacc and '!GCC$' as non-comment to permit <tab>
        and truncation warnings.

2020-04-20  Thomas Koenig  <tkoenig@gcc.gnu.org>

        * dump-parse-tree.c (show_attr): Add numerous flags, some cleanup.

2020-04-20  Harald Anlauf  <anlauf@gmx.de>

        PR fortran/93364
        * array.c (gfc_set_array_spec): Check for sum of rank and corank
        not exceeding GFC_MAX_DIMENSIONS.

2020-04-20  Steve Kargl  <kargl@gcc.gnu.org>
        Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/91800
        * decl.c (variable_decl): Reject Hollerith constants as type
        initializer.

2020-04-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/93500
        * resolve.c (resolve_operator): If both operands are
        NULL, return false.
        * simplify.c (simplify_bound): If a division by zero
        was seen during bound simplification, free the
        corresponcing expression and return &gfc_bad_expr.

2020-04-17  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/94090
        * gfortran.dg (gfc_compare_interfaces): Add
        optional argument bad_result_characteristics.
        * interface.c (gfc_check_result_characteristics): Fix
        whitespace.
        (gfc_compare_interfaces): Handle new argument; return
        true if function return values are wrong.
        * resolve.c (resolve_global_procedure): Hard error if
        the return value of a function is wrong.

2020-04-15  Fritz Reese  <foreese@gcc.gnu.org>
        Linus Koenig <link@sig-st.de>

        PR fortran/94192
        * simplify.c (simplify_bound): Simplify condition for error check.

2020-04-14  Tobias Burnus  <tobias@codesourcery.com>

        * module.c (gfc_match_use): Fix name-conflict check for use-associating
        the same symbol again in a submodule.

2020-04-13  Linus Koenig <link@sig-st.de>

        PR fortran/94192
        * resolve.c (resolve_fl_var_and_proc): Set flag "error" to 1 if
        pointer is found to not have an assumed rank or a deferred shape.
        * simplify.c (simplify_bound): If an error has been issued for a
        given pointer, one should not attempt to find its bounds.

2020-04-09  Fritz Reese  <foreese@gcc.gnu.org>

        PR fortran/87923
        * gfortran.h (gfc_resolve_open, gfc_resolve_close): Add
        locus parameter.
        (gfc_resolve_dt): Add code parameter.
        * io.c (async_io_dt, check_char_variable, is_char_type): Removed.
        (resolve_tag_format): Add locus to error message regarding
        zero-sized array in FORMAT tag.
        (check_open_constraints, check_close_constraints): New functions
        called at resolution time.
        (gfc_match_open, gfc_match_close, match_io): Move checks which don't
        affect the match result to new functions check_open_constraints,
        check_close_constraints, check_io_constraints.
        (gfc_resolve_open, gfc_resolve_close): Call new functions
        check_open_constraints, check_close_constraints after all tags have
        been independently resolved.  Remove duplicate constraints which are
        already verified by resolve_tag.  Explicitly pass locus to all error
        reports.
        (compare_to_allowed_values): Add locus parameter and provide
        explicit locus all error reports.
        (match_open_element, match_close_element, match_file_element,
        match_dt_element, match_inquire_element): Remove redundant special
        cases for ASYNCHRONOUS and IOMSG tags.
        (gfc_resolve_dt): Remove redundant special case for format
        expression.  Call check_io_constraints, forwarding an I/O list as
        the io_code parameter if present.
        (check_io_constraints): Change return type to bool.  Pass explicit
        locus to error reports.  Move generic checks after tag-specific
        checks, since errors are no longer buffered.  Move simplification of
        format string to match_io.  Remove redundant checks which are
        verified by resolve_tag.  Remove usage of async_io_dt flag and
        explicitly mark symbols used in asynchronous I/O with the
        asynchronous attribute.
        * resolve.c (resolve_transfer, resolve_fl_namelist): Remove checks
        for async_io_dt flag.  This is now done in io.c.
        (check_io_constraints).
        (gfc_resolve_code): Pass code locus to gfc_resolve_open,
        gfc_resolve_close, gfc_resolve_dt.

2020-04-07  Fritz Reese  <foreese@gcc.gnu.org>
            Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/93871
        * gfortran.h (GFC_ISYM_ACOSD, GFC_ISYM_ASIND, GFC_ISYM_ATAN2D,
        GFC_ISYM_ATAND, GFC_ISYM_COSD, GFC_ISYM_COTAND, GFC_ISYM_SIND,
        GFC_ISYM_TAND): New.
        * intrinsic.c (add_functions): Remove check for flag_dec_math.
        Give degree trig functions simplification and name resolution
        functions (e.g, gfc_simplify_atrigd () and gfc_resolve_atrigd ()).
        (do_simplify): Remove special casing of degree trig functions.
        * intrinsic.h (gfc_simplify_acosd, gfc_simplify_asind,
        gfc_simplify_atand, gfc_simplify_cosd, gfc_simplify_cotand,
        gfc_simplify_sind, gfc_simplify_tand, gfc_resolve_trigd2): Add new
        prototypes.
        (gfc_simplify_atrigd, gfc_simplify_trigd, gfc_resolve_cotan,
        resolve_atrigd): Remove prototypes of deleted functions.
        * iresolve.c (is_trig_resolved, copy_replace_function_shallow,
        gfc_resolve_cotan, get_radians, get_degrees, resolve_trig_call,
        gfc_resolve_atrigd, gfc_resolve_atan2d): Delete functions.
        (gfc_resolve_trigd, gfc_resolve_trigd2): Resolve to library functions.
        * simplify.c (rad2deg, deg2rad, gfc_simplify_acosd, gfc_simplify_asind,
        gfc_simplify_atand, gfc_simplify_atan2d, gfc_simplify_cosd,
        gfc_simplify_sind, gfc_simplify_tand, gfc_simplify_cotand): New
        functions.
        (gfc_simplify_atan2): Fix error message.
        (simplify_trig_call, gfc_simplify_trigd, gfc_simplify_atrigd,
        radians_f): Delete functions.
        * trans-intrinsic.c: Add LIB_FUNCTION decls for sind, cosd, tand.
        (rad2deg, gfc_conv_intrinsic_atrigd, gfc_conv_intrinsic_cotan,
        gfc_conv_intrinsic_cotand, gfc_conv_intrinsic_atan2d): New functions.
        (gfc_conv_intrinsic_function): Handle ACOSD, ASIND, ATAND, COTAN,
        COTAND, ATAN2D.
        * trigd_fe.inc: New file. Included by simplify.c to implement
        simplify_sind, simplify_cosd, simplify_tand with code common to the
        libgfortran implementation.

2020-04-06  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/93686
        * decl.c (gfc_match_data): Handle data matching for derived type
        pointers.

2020-04-02  Tobias Burnus  <tobias@codesourcery.com>

        * gfortran.h (gfc_resolve_formal_arglist): Add prototype.
        * interface.c (check_dtio_interface1): Call it.
        * resolve.c (gfc_resolve_formal_arglist): Renamed from
        resolve_formal_arglist, removed static.
        (find_arglists, resolve_types): Update calls.

2020-04-02  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/93522
        * match.c (gfc_match_select_rank): Fix error cleanup.

2020-04-02  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/93498
        * check.c (gfc_check_findloc):  If the kinds of the arguments
        differ goto label "incompat".

2020-04-02 Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/94030
        * resolve.c (resolve_equivalence): Correct formatting
        around the label "identical_types".  Instead of using
        gfc_resolve_array_spec use is_non_constants_shape_array
        to determine whether the array can be used in a in an
        equivalence statement.

2020-04-01  Mark Eggleston  <mark.eggleston@codethink.com>

        PR fortran/94386
        expr.c (simplify_parameter_variable): Restore code deleted
        in PR94246.

2020-03-28  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/94246
        * arith.c : Remove trailing white space.
        * expr.c (scalarize_intrinsic_call): Remove the error checking.
        Make a copy of the expression to be simplified and only replace
        the original if the simplification succeeds.

2020-03-28  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/94348
        * decl.c (gfc_match_submod_proc): Add result var to the
        proc's namespace.

2020-03-27  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/93957
        * trans-array.c (gfc_alloc_allocatable_for_assignment): Accept
        nonallocatable, nonpointer deferred-rank arrays.

2020-03-27  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/93363
        * resolve.c (resolve_assoc_var): Reject association to DT and
        function name.

2020-03-25  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/93484
        * match.c (gfc_match_type_spec): Replace gfc_match_init_expr with
        gfc_match_expr. Return m if m is MATCH_NO or MATCH_ERROR.

2020-03-23  Mark Eggleston  <mark.eggleston@codethink.com>
        Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/93600
        * expr.c (simplify_parameter_variable): Check whether the ref
        chain contains INQUIRY_LEN or INQUIRY_KIND and set inquiry
        boolean. When an empty array has been identified and a new
        new EXPR_ARRAY expression has been created only return that
        expression if inquiry is not set. This allows the new
        expression to drop through to be simplified into a
        EXPR_CONSTANT representing %kind or %len.
        * matc.c (gfc_match_assignment): If lvalue doesn't have a
        symtree free both lvalue and rvalue expressions and return
        an error.
        * resolv.c (gfc_resolve_ref): Ensure that code to handle
        INQUIRY_LEN is only performed for arrays with deferred types.

2020-03-18  Jakub Jelinek  <jakub@redhat.com>

        * class.c (generate_finalization_wrapper): Fix up duplicated word
        issue in a comment.
        * trans-types.c (gfc_get_nodesc_array_type): Likewise.

2020-03-17  Jakub Jelinek  <jakub@redhat.com>

        * array.c (gfc_check_iter_variable): Fix up duplicated word issue
        in a comment.
        * arith.c (gfc_arith_concat): Likewise.
        * resolve.c (gfc_resolve_ref): Likewise.
        * frontend-passes.c (matmul_lhs_realloc): Likewise.
        * module.c (gfc_match_submodule, load_needed): Likewise.
        * trans-expr.c (gfc_init_se): Likewise.

2020-03-15  Lewis Hyatt  <lhyatt@gmail.com>

        * lang.opt: Avoid redundancy in the help text.

2020-03-12  Tobias Burnus  <tobias@codesourcery.com>

        PR middle-end/94120
        * openmp.c (gfc_match_oacc_declare): Accept function-result
        variables; reject variables declared in a different scoping unit.

2020-03-08  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/93581
        * resolve.c (gfc_resolve_ref): Modify array refs to be elements
        if the ref chain ends in INQUIRY_LEN.
        * trans-array.c (gfc_get_dataptr_offset): Provide the offsets
        for INQUIRY_RE and INQUIRY_IM.

2020-03-05 Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/93792
        * decl.c (variable_decl): If param and initializer check
        for BOZ, if found,  output an error, set m to MATCH_ERROR
        and goto cleanup.

2020-03-02  Andrew Benson  <abensonca@gmail.com>

        PR fortran/93486
        * module.c: Increase size of variables used to read module names
        when loading interfaces from module files to permit cases where
        the name is the concatenation of a module and submodule name.
        * gfortran.dg/pr93486.f90: New test.

2020-03-01  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/92976
        * match.c (select_type_set_tmp): If the selector array spec has
        explicit bounds, make the temporary's bounds deferred.

2020-03-01  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/92959
        * trans-intrinsic.c (gfc_conv_associated): Eliminate
        'nonzero_charlen' and move the chunk to evaluate zero character
        length until after the argument evaluation so that the string
        length can be used.

2020-02-28  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/92785
        * trans-expr.c (gfc_conv_intrinsic_to_class): Renormalise non-
        variable expressions to be unity lbound based.

2020-02-25  Steven G. Kargl  <kargl@gcc.gnu.org>

        * simplify.c (degrees_f): Remove unused code.

2020-02-25  Jakub Jelinek  <jakub@redhat.com>

        PR translation/93864
        * intrinsic.texi (CO_BROADCAST): Fix typo, paramter -> parameter.
        * trans-array.c (gfc_allocate_pdt_comp, gfc_deallocate_pdt_comp,
        gfc_check_pdt_dummy): Fix comment typo paramter -> parameter.

2020-02-24  Mark Eggleston  <mark.eggleston@codethink.com>
            Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/93835
        * decl.c (gfc_match_data) : Check whether the data expression
        is a derived type and is a constructor. If a BOZ constant
        is encountered in the constructor output an error and return
        MATCH_ERROR.

2020-02-24  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/93604
        * decl.c (gfc_match_data) : Check whether the data expression
        is a derived type and is a constructor. If a BOZ constant
        is encountered in the constructor output an error and return
        MATCH_ERROR.

2020-02-24  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/93552
        * match.c (match_exit_cycle): With OpenACC, check the kernels loop
        directive and tile clause as well.

2020-02-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/93889
        * interface.c (compare_parameter): Fix error message.

2020-02-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/93890
        * interface.c: Replace "can not" by "cannot" and remove trailing
        space.

2020-02-20  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/93825
        * openmp.c (resolve_oacc_loop_blocks): Move call to
        resolve_oacc_nested_loops from here ...
        (resolve_oacc_loop): ... to here.

2020-02-18  Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/93714
        * expr.c (gfc_check_pointer_assign): Move check for
        matching character length to after checking the lvalue
        attributes for target or pointer.

2020-02-18  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/93601
        * match.c (gfc_match_assignment) : Reject assignment if
        the lhs stype is BT_CLASS and the rhs type is BT_BOZ.

2020-02-18  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/93603
        * match.c (gfc_match_associate) : If target expression
        has the type BT_BOZ output an error and goto
        assocListError.

2020-02-18  Steven G. Kargl  <kargl@gcc.gnu.org>
            Mark Eggleston  <markeggleston@gcc.gnu.org>

        PR fortran/93580
        * primary.c (gfc_match_varspec): If the symbol following %
        is re or im and the primary expression type is not BT_COMPLEX
        issue an error. If the symbol is len and the primary
        expression type is not BT_CHARACTER is an error.

2020-02-10  Andrew Benson  <abensonca@gmail.com>

        PR fortran/83113
        * array.c: Do not attempt to set the array spec for a submodule
        function symbol (as it has already been set in the corresponding
        module procedure interface).
        * symbol.c: Do not reject duplicate POINTER, ALLOCATABLE, or
        DIMENSION attributes in declarations of a submodule function.
        * gfortran.h: Add a macro that tests for a module procedure in a
        submodule.
        * gfortran.dg/pr83113.f90: New test.

2020-02-03  Julian Brown  <julian@codesourcery.com>
            Tobias Burnus  <tobias@codesourcery.com>

        * cpp.c (cpp_define_builtins): Update _OPENACC define to 201711.
        * intrinsic.texi: Update mentions of OpenACC version to 2.6.
        * gfortran.texi: Likewise. Remove experimental disclamer for OpenACC.
        * invoke.texi: Remove experimental disclamer for OpenACC.

2020-02-03  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/93541
        * intrinisic.texi (OpenMP Modules OMP_LIB and OMP_LIB_KINDS):
        Add undocumented parameters from omp_lib.f90.in.

2020-02-03  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/93427
        * resolve.c (resolve_assoc_var): Remove too strict check.
        * gfortran.dg/associate_51.f90: Update test case.

2020-02-01  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/92305
        * trans-types.c (gfc_get_function_type): Also push boolean_type_node
        types for non-character scalar VALUE optional dummy arguments.
        * trans-decl.c (create_function_arglist): Skip those in
        hidden_typelist.  Formatting fix.

2020-01-31  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/93462
        * frontend-passes.c (gfc_code_walker): For EXEC_OACC_ATOMIC, set
        in_omp_atomic to true prevent front-end optimization.

2020-01-30  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        PR fortran/87103
        * expr.c (gfc_check_conformance): Check vsnprintf for truncation.
        * iresolve.c (gfc_get_string): Likewise.
        * symbol.c (gfc_new_symbol): Remove check for maximum symbol
        name length.  Remove redundant 0 setting of new calloc()ed
        gfc_symbol.

2020-01-30  Paul Thomas  <pault@gcc.gnu.org>
            Jakub Jelinek  <jakub@redhat.com>

        PR fortran/92123
        * trans-decl.c (gfc_get_symbol_decl): Call gfc_defer_symbol_init for
        CFI descs.
        (gfc_build_builtin_function_decls): Use ".w." instead of ".ww" or ".wR"
        for gfor_fndecl_{cfi_to_gfc,gfc_to_cfi}.
        (convert_CFI_desc): Handle references to CFI descriptors.

2020-01-29  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/93463
        * openmp.c (oacc_code_to_statement): Handle
        EXEC_OACC_{ROUTINE,UPDATE,WAIT,CACHE,{ENTER,EXIT}_DATA,DECLARE}.

2020-01-28  Andrew Benson  <abensonca@gmail.com>

        PR fortran/93461
        * trans.h: Increase GFC_MAX_MANGLED_SYMBOL_LEN to
        GFC_MAX_SYMBOL_LEN*3+5 to allow for inclusion of submodule name,
        plus the "." between module and submodule names.
        * gfortran.dg/pr93461.f90: New test.

2020-01-28  Andrew Benson  <abensonca@gmail.com>

        PR fortran/93473
        * parse.c: Increase length of char variables to allow them to hold
        a concatenated module + submodule name.
        * gfortran.dg/pr93473.f90: New test.

2020-01-28  Julian Brown  <julian@codesourcery.com>

        PR fortran/93025
        * openmp.c (resolve_omp_clauses): Check array references for contiguity.

2020-01-28  Julian Brown  <julian@codesourcery.com>

        * gfortran.h (gfc_symbol): Add comp_mark bitfield.
        * openmp.c (resolve_omp_clauses): Disallow mixed component and
        full-derived-type accesses to the same variable within a single
        directive.

2020-01-28  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/93464
        * openmp.c (gfc_omp_check_optional_argument): Avoid ICE when
        DECL_LANG_SPECIFIC and GFC_DESCRIPTOR_TYPE_P but not
        GFC_DECL_SAVED_DESCRIPTOR as for local allocatable character vars.

2020-01-28  Tobias Burnus  <tobias@codesourcery.com>

        * gfortran.texi (Runtime): Remove tailing '.' in @menu.

2020-01-27  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/85781
        * trans-expr.c (gfc_conv_substring): Handle non-ARRAY_TYPE strings
        of Bind(C) procedures.

2020-01-22  Jakub Jelinek  <jakub@redhat.com>

        * parse.c (parse_omp_structured_block): Handle ST_OMP_TARGET_PARALLEL.
        * trans-openmp.c (gfc_trans_omp_target)
        <case EXEC_OMP_TARGET_PARALLEL>: Call pushlevel first.

        PR fortran/93329
        * openmp.c (omp_code_to_statement): Handle remaining EXEC_OMP_*
        cases.

2020-01-21  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/93309
        * interface.c (gfc_procedure_use): Also check parent namespace for
        'implict none (external)'.
        * symbol.c (gfc_get_namespace): Don't set has_implicit_none_export
        to parent namespace's setting.

2020-01-19  Thomas König  <tkoenig@gcc.gnu.org>

        PR fortran/44960
        * primary.c (gfc_match_rvalue): Break after setting MATCH_ERROR.
        * resolve.c (resolve_function): Issue error when a
        function call contains a reference.

2020-01-17  Mark Eggleston  <mark.eggleston@codethink.com>

        PR fortran/93236
        * resolve.c (resolve_types): Declare boolean recursive and set with the
        value of the recursive attribute of namespace proc_name symbol
        structure if it exists.  Call gfc_save_all if both flag_automatic and
        recursive are false or ns->save_all is true.

2020-01-16  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/93253
        * check.c (gfc_invalid_boz): Mention -fallow-invalid-boz
        in the error message.
        * gfortran.texi (BOZ literal constants): List another missing
        extension and refer to -fallow-invalid-boz.
        * lang.opt (fallow-invalid-boz): Also mention 'X' in the help text
        as it is not covered by the previous wording.
        * primary.c (match_boz_constant): Tweak wording such that it is
        clear how to fix the nonstandard use.

2020-01-09  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/65428
        * array.c (empty_constructor): New variable.
        (empty_ts): New variable.
        (expand_constructor): Save typespec in empty_ts.
        Unset empty_constructor if there is an element.
        (gfc_expand_constructor): Initialize empty_constructor
        and empty_ts.  If there was no explicit constructor
        type and the constructor is empty, take the type from
        empty_ts.

2020-01-09  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/84135
        * array.c (gfc_set_array_spec): Fix shifting of codimensions
        when adding a dimension.
        * decl.c (merge_array_spec): Ditto. Fix using correct codimensions.

2020-01-07  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/93162
        * trans-openmp.c (gfc_trans_omp_clauses): Check for REF_ARRAY type
        before testing u.ar.type == AR_FULL.

2020-01-04  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/91640
        * trans-expr.c (gfc_conv_procedure_call): Avoid copy-out for nonvariable
        arguments to contiguous dummy args.  Avoid re-checking whether fsym is
        NULL.

2020-01-03  Tobias Burnus  <tobias@codesourcery.com>

        * trans-openmp.c (gfc_omp_check_optional_argument): Always return a
        Boolean expression; handle unallocated/disassociated actual arguments
        as absent if passed to nonallocatable/nonpointer dummy array arguments.
        (gfc_build_cond_assign): Change to assume a Boolean expr not a pointer.
        (gfc_omp_finish_clause, gfc_trans_omp_clauses): Assign NULL to generated
        array-data variable if the argument is absent. Simplify code as
        'present' is now a Boolean expression.

2020-01-03  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/92994
        * primary.c (gfc_match_rvalue): Add some flavor checks
        gfc_matching_procptr_assignment.
        * resolve.c (resolve_assoc_var): Add more checks for invalid targets.

2020-01-02  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/68020
        * array.c (gfc_match_array_spec): Fix implied-type matching
        for rank > 2.

2020-01-01  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/93113
        * dependency.c (gfc_dep_resolver): Handle REF_INQUIRY in switch
        for ref types.

2020-01-01  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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