Fix and document -r option

[gcc.git] / gcc / fortran / ChangeLog

2018-09-20  Allan Sandfeld Jensen  <allan.jensen@qt.io>

        * gfortranspec.c (lang_specific_driver): Handle -r like -nostdlib.

2018-09-20  Janus Weil  <janus@gcc.gnu.org>

        * gfortran.h (gfc_str_startswith): New macro.
        * decl.c (variable_decl, gfc_match_end): Use it.
        * iresolve.c (is_trig_resolved): Ditto.
        * module.c (load_omp_udrs, read_module): Ditto.
        * options.c (gfc_handle_runtime_check_option): Ditto.
        * primary.c (match_arg_list_function): Ditto.
        * trans-decl.c (gfc_get_symbol_decl): Ditto.
        * trans-expr.c (gfc_conv_procedure_call): Ditto.
        * interface.c (dtio_op): Replace strncmp by strcmp.
        * resolve.c (resolve_actual_arglist, resolve_function): Ditto.
        * trans-expr.c (conv_arglist_function): Ditto.
        * trans-intrinsic.c (gfc_conv_ieee_arithmetic_function): Replace macro
        STARTS_WITH by gfc_str_startswith.

2018-09-20  Cesar Philippidis  <cesar@codesourcery.com>

        * dump-parse-tree.c (show_omp_clauses): Add missing omp list_types
        and reorder the switch cases to match the enum in gfortran.h.

2018-09-19  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/84109
        * trans-expr.c (gfc_trans_assignment_1): The rse.pre for the
        assignment of deferred character intrinsic elemental function
        results to a realocatable lhs must not be added to the exterior
        block if they are array valued but must go to the loop body.

2018-09-18  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/29550
        * gfortran.h (gfc_expr): Add external_blas flag.
        * frontend-passes.c (matrix_case): Add case A2TB2T.
        (optimize_namespace): Handle flag_external_blas by
        calling call_external_blas.
        (get_array_inq_function): Add argument okind. If
        it is nonzero, use it as the kind of argument
        to be used.
        (inline_limit_check): Remove m_case argument, add
        limit argument instead.  Remove assert about m_case.
        Set the limit for inlining from the limit argument.
        (matmul_lhs_realloc): Handle case A2TB2T.
        (inline_matmul_assign): Handle inline limit for other cases with
        two rank-two matrices.  Remove no-op calls to inline_limit_check.
        (call_external_blas): New function.
        * trans-intrinsic.c (gfc_conv_intrinsic_funcall): Do not add
        argument to external BLAS if external_blas is already set.

2018-09-18  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/87239
        * trans-expr.c (gfc_trans_assignment_1): The rse.pre for the
        assignment of deferred character elemental function results to
        a realocatable lhs must not be added to the exterior block but
        must go to the loop body.

2018-09-18  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/87336
        * trans-array.c (gfc_get_array_span): Try to get the element
        length of incomplete types. Return NULL_TREE otherwise.
        (gfc_conv_expr_descriptor): Only set the 'span' field if the
        above does not return NULL_TREE. Set 'span' field if possible
        for all new descriptors.

2018-09-17  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/64120
        * trans-decl.c (gfc_get_symbol_decl): Flag allocatable, scalar
        characters with a variable length expression for deferred init.
        (gfc_trans_deferred_vars): Perform the assignment for these
        symbols by calling gfc_conv_string_length.

2018-09-17  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/85954
        * resolve.c (resolve_assoc_var): If the target expression is a
        deferred charlen dummy and the associate name shares the
        charlen, generate a new one. Make sure that new charlens are in
        the namespace list so that they get cleaned up.
        * trans-array.c (gfc_is_reallocatable_lhs): Associate names are
        not reallocatable.
        * trans-decl.c (gfc_get_symbol_decl): Put deferred character
        length dummy and result arrays on the deferred initialization
        list so that the variable length arrays can be correctly dealt
        with.
        * trans-expr.c (gfc_conv_string_length): Return if 'expr' is
        NULL rather than ICEing..

2018-09-16  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/86484
        PR fortran/84543
        * match.c (gfc_match_assignment): For a polymorphic assignment,
        make sure that the vtab for the rhs type is generated.

2018-09-16  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/37802
        * frontend-passes.c (B_ERROR): New macro for matmul bounds
        checking error messages.
        (C_ERROR): Likewise.
        (inline_matmul_assign): Reorganize bounds checking, use B_ERROR
        and C_ERROR macros.

2018-09-13  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * trans-array.c (gfc_conv_array_initializer): Remove excess precision
        from overlength string initializers.

2018-09-12  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/87284
        * trans-expr.c (gfc_trans_class_init_assign): Access to
        to array elements of the dynamic type requires that the array
        reference be added to the class expression and not the _data
        component, unlike scalar expressions.

2018-09-11  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/87172
        * resolve.c (resolve_fl_derived): If a type has the 'use_assoc'
        attribute, then it was declared in another module, so there should be
        no error that it has not been declared.

2018-09-11  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/87277
        * expr.c (is_subref_array): Add the check of dimensionality for
        class, dummy, pointer arrays.

2018-09-11  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/86830
        * expr.c (gfc_is_simply_contiguous): Handle type-bound procedure calls
        with non-polymorphic objects.

2018-09-10  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/85395
        * decl.c (match_binding_attributes): Use correct default accessibility
        for procedure pointer components.

2018-09-03  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

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

2018-08-31  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/86328
        PR fortran/86760
        * trans-array.c (gfc_conv_scalarized_array_ref): Do not fix
        info->descriptor but pass it directly to gfc_build_array_ref.
        (gfc_conv_array_ref): Likewise for se->expr.
        * trans.c (gfc_build_array_ref): If 'decl' is a COMPONENT_REF
        obtain the span field directly from it.

2017-08-28  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/80477
        * trans-expr.c (gfc_conv_procedure_call): Allocatable class
        scalar results being passed to a derived type formal argument
        are finalized if possible. Otherwise, rely on existing code for
        deallocation. Make the deallocation of allocatable result
        components conditional on finalization not taking place. Make
        the freeing of data components after finalization conditional
        on the data being NULL.
        (gfc_trans_arrayfunc_assign): Change the gcc_assert to a
        condition to return NULL_TREE.
        (gfc_trans_assignment_1): If the assignment is class to class
        and the rhs expression must be finalized but the assignment
        is not marked as a polymorphic assignment, use the vptr copy
        function instead of gfc_trans_scalar_assign.

        PR fortran/86481
        * trans-expr.c (gfc_conv_expr_reference): Do not add the post
        block to the pre block if the expression is to be finalized.
        * trans-stmt.c (gfc_trans_allocate): If the expr3 must be
        finalized, load the post block into a finalization block and
        add it right at the end of the allocation block.

2018-08-27  David Malcolm  <dmalcolm@redhat.com>

        PR 87091
        * error.c (gfc_format_decoder): Update for conversion of
        show_caret_p to a tri-state.

2018-08-25  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/86545
        * resolve.c (resolve_transfer): Correctly determine typespec for
        generic function calls, in order to throw a proper error.

2018-08-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

        PR fortran/86837
        * frontend-passes.c (var_in_expr_callback): New function.
        (var_in_expr): New function.
        (traverse_io_block): Use var_in_expr instead of
        gfc_check_dependency for checking if the variable depends on the
        previous interators.

2018-08-23  Janne Blomqvist  <blomqvist.janne@gmail.com>

        * trans-intrinsic.c (gfc_conv_intrinsic_minmaxval): Delete
        HONOR_SIGNED_ZEROS checks.

2018-08-23  Paul Thomas  <pault@gcc.gnu.org>

        PR fortran/86863
        * resolve.c (resolve_typebound_call): If the TBP is not marked
        as a subroutine, check the specific symbol.

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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