[gcc.git] / gcc / cp / ChangeLog

2018-09-18  Marek Polacek  <polacek@redhat.com>

        P1064R0 - Allowing Virtual Function Calls in Constant Expressions
        * call.c (build_over_call): No longer check if we're outside a template
        function.
        * class.c (build_vtbl_initializer): Build vtable's constructor with
        indexes.
        * constexpr.c (cxx_eval_constant_expression): Don't ignore _vptr's
        initializer.  Handle OBJ_TYPE_REF.
        (potential_constant_expression_1): Handle OBJ_TYPE_REF.
        * decl.c (maybe_commonize_var): Bail out for any DECL_ARTIFICIAL.
        (initialize_artificial_var): Mark the variable as constexpr.
        (grokdeclarator): Change error to pedwarn.  Only warn when
        pedantic and not C++2a.

2018-09-18  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/85065
        * cp-tree.h (NON_ERROR): New.
        * pt.c (auto_hash::hash): Use it.
        (do_auto_deduction): Likewise.

2018-09-18  Nathan Sidwell  <nathan@acm.org>

        PR c++/86881
        * name-lookup.c (check_local_shadow): Ignore auto types.

2018-09-17  David Malcolm  <dmalcolm@redhat.com>

        * error.c (range_label_for_type_mismatch::get_text): Update for
        new param.

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

        * typeck2.c (digest_init_r): Fix overlength strings.

2018-09-13  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR c++/87093
        * method.c (constructible_expr): We're in an unevaluated context
        in all cases, not just for class targets.

2018-09-12  David Malcolm  <dmalcolm@redhat.com>

        PR c++/85110
        * call.c (struct conversion_info): Add "loc" field.
        (arg_conversion_rejection): Add "loc" param, using it to
        initialize the new field.
        (bad_arg_conversion_rejection): Likewise.
        (explicit_conversion_rejection): Initialize the new field to
        UNKNOWN_LOCATION.
        (template_conversion_rejection): Likewise.
        (add_function_candidate): Pass on the argument location to the new
        param of arg_conversion_rejection.
        (add_conv_candidate): Likewise.
        (build_builtin_candidate): Likewise.
        (build_user_type_conversion_1): Likewise.
        (single_z_candidate): New function.
        (maybe_get_bad_conversion_for_unmatched_call): New function.
        (complain_about_bad_argument): New function, based on part of
        convert_for_assignment.
        (build_new_method_call_1): Split out handling of the "no viable
        candidates" case into...
        (complain_about_no_candidates_for_method_call): ...this new
        function, and use the new functions above to special-case the
        handling of a single non-viable candidate due to a bad argument.
        * cp-tree.h (complain_about_bad_argument): New decl.
        * typeck.c (convert_for_assignment): Split out one error-handling
        case into complain_about_bad_argument.

2018-09-09  Cesar Philippidis  <cesar@codesourcery.com>
            Julian Brown  <julian@codesourcery.com>

        PR middle-end/86336
        * semantics.c (finish_omp_clauses): Treat C++ references the same in
        OpenACC as OpenMP.

2018-08-28  Martin Liska  <mliska@suse.cz>

        * constexpr.c (cxx_eval_call_expression): Add quotes
        to -fconstexpr-depth=.

2018-09-10  Marek Polacek  <polacek@redhat.com>

        * class.c (build_vtbl_ref): Remove.
        (build_vtbl_ref_1): Rename to build_vtbl_ref.
        (build_vfn_ref): Call build_vtbl_ref instead of build_vtbl_ref_1.

2018-09-08  Marek Polacek  <polacek@redhat.com>

        PR c++/87150 - wrong ctor with maybe-rvalue semantics.
        * call.c (struct conversion): Update commentary.
        (standard_conversion): Set rvaluedness_matches_p if LOOKUP_PREFER_RVALUE
        for ck_base.

2018-09-08  Jason Merrill  <jason@redhat.com>

        PR c++/86678 - constexpr function with non-constant after return.
        * constexpr.c (potential_constant_expression_1): Add jump_target.
        (breaks): Check for BREAK_STMT.
        (continues): Check for CONTINUE_STMT.

2018-09-08  Marek Polacek  <polacek@redhat.com>

        * cxx-pretty-print.c (cxx_pretty_printer::statement) <case
        RANGE_FOR_SMT>: Handle RANGE_FOR_INIT_STMT.

2018-09-07  Marek Polacek  <polacek@redhat.com>

        PR c++/87152 - range-based for loops with initializer broken in templates.
        * constexpr.c (potential_constant_expression_1) <case RANGE_FOR_STMT>:
        Recur into RANGE_FOR_INIT_STMT.
        * cp-tree.def: Add RANGE_FOR_INIT_STMT to RANGE_FOR_STMT.
        * cp-tree.h (RANGE_FOR_INIT_STMT): Define.
        * dump.c (cp_dump_tree) <case RANGE_FOR_STMT>: Also dump
        RANGE_FOR_INIT_STMT.
        * pt.c (tsubst_expr) <case RANGE_FOR_STMT>: Recur into
        RANGE_FOR_INIT_STMT.
        * semantics.c (begin_range_for_stmt): Adjust call to build_stmt.
        Do put the init statement in RANGE_FOR_INIT_STMT.
        (finish_range_for_decl): Pop it for templates.

2018-09-06  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * decl.c (check_initializer): Call cp_complete_array_type.

2018-09-05  Marek Polacek  <polacek@redhat.com>

        PR c++/87109, wrong overload with ref-qualifiers.
        * call.c (build_user_type_conversion_1): Use NULL instead of 0.  Bail
        out if performing the maybe-rvalue overload resolution and a conversion
        function is getting called.

        PR c++/86982, -Wreturn-local-addr and std::move and std::forward.
        * typeck.c (maybe_warn_about_returning_address_of_local): Handle calls
        to std::move or std::forward.
        (is_std_forward_p): New function.

2018-09-05  Pádraig Brady  <p@draigbrady.com>

        PR c++/87185
        * lambda.c (prune_lambda_captures): Protect against const_vars.get
        returning NULL.

2018-09-04  Marek Polacek  <polacek@redhat.com>

        * cp-tree.h (treat_lvalue_as_rvalue_p): Declare.
        * except.c (build_throw): Use it.  Use CP_TYPE_VOLATILE_P.
        * typeck.c (treat_lvalue_as_rvalue_p): No longer static.  Add PARM_OK
        parameter.
        (maybe_warn_pessimizing_move): Adjust treat_lvalue_as_rvalue_p call.
        (check_return_expr): Likewise.

2018-09-03  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84980
        * constraint.cc (finish_shorthand_constraint): Early return if the
        constraint is erroneous.

2018-09-02  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * decl.c (eval_check_narrowing): Remove.
        (check_initializer): Move call to braced_list_to_string from here ...
        * typeck2.c (store_init_value): ... to here.
        (digest_init_r): Remove handing of signed/unsigned char strings.

2018-08-31  Nathan Sidwell  <nathan@acm.org>

        PR c++/87155
        PR c++/84707
        * name-lookup.c (name_lookup::search_namespace): Don't look at
        inlines when searching for NULL names.

        * decl.c (decls_match): Remove SYSTEM_IMPLICIT_EXTERN_C matching
        of return types and parms.
        * parser.c (cp_parser_parameter_declaration_clause): Likewise,
        '()' always means '(void)'.

2018-08-29  Jakub Jelinek  <jakub@redhat.com>

        PR c++/87095
        * decl.c (begin_destructor_body): If current_class_type has
        virtual bases and the primary base is nearly empty virtual base,
        voidify clearing of vptr and make it conditional on in-charge
        argument.

2018-08-29  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/85265
        * parser.c (cp_parser_introduction_list): If cp_parser_identifier
        returns error_mark_node early exit the loop.
        (cp_parser_template_introduction): Improve error-recovery, remove
        error call about empty introduction-list.

2018-08-29  David Malcolm  <dmalcolm@redhat.com>

        PR c++/85110
        * call.c (print_conversion_rejection): Add "fn" param and use it
        for "no known conversion" messages to underline the pertinent
        param.
        (print_z_candidate): Supply "fn" to the new param above.

2018-08-29  Jakub Jelinek  <jakub@redhat.com>

        PR c++/87122
        * pt.c (tsubst_expr) <case RANGE_FOR_STMT>: If
        processing_template_decl and decl is structured binding decl, call
        cp_finish_decomp.

2018-08-28  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/86546
        * decl.c (finish_case_label): If the type is erroneous early
        return error_mark_node.

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

        PR c++/63392
        * parser.c (cp_parser_diagnose_invalid_type_name): Add fix-it
        hint.

2018-08-27  Jakub Jelinek  <jakub@redhat.com>

        PR c++/86993
        * cp-tree.h (cxx_readonly_error): Add location_t argument.
        * typeck2.c (cxx_readonly_error): Add LOC argument, pass it to
        ERROR_FOR_ASSIGNMENT macro and readonly_error.  Add LOC argument
        to ERROR_FOR_ASSIGNMENT macro, use error_at instead of error and
        pass LOC to it.  Formatting fixes.
        * typeck.c (cp_build_unary_op): Pass location to cxx_readonly_error.
        (cp_build_modify_expr): Pass loc to cxx_readonly_error.
        * semantics.c (finish_asm_stmt): Pass input_location to
        cxx_readonly_error.

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

        PR c++/87091
        * decl.c (grokdeclarator): Update for conversion of show_caret_p
        to a tri-state.
        * error.c (cp_printer): Likewise.
        * name-lookup.c (maybe_suggest_missing_std_header): Update call to
        maybe_add_include_fixit to suggest overriding the location, as it
        is for a note.
        * parser.c (cp_parser_string_literal): Update for conversion of
        show_caret_p to a tri-state.
        (cp_parser_elaborated_type_specifier): Likewise.
        (set_and_check_decl_spec_loc): Likewise.
        * pt.c (listify): Update call to maybe_add_include_fixit to not
        override the location, as it is for an error.
        * rtti.c (typeid_ok_p): Likewise.

2018-08-27  Martin Liska  <mliska@suse.cz>

        * call.c (build_call_a): Use new function
        fndecl_built_in_p and remove check for FUNCTION_DECL if
        possible.
        (build_cxx_call): Likewise.
        * constexpr.c (constexpr_fn_retval): Likewise.
        (cxx_eval_builtin_function_call): Likewise.
        (cxx_eval_call_expression): Likewise.
        (potential_constant_expression_1): Likewise.
        * cp-gimplify.c (cp_gimplify_expr): Likewise.
        (cp_fold): Likewise.
        * decl.c (decls_match): Likewise.
        (validate_constexpr_redeclaration): Likewise.
        (duplicate_decls): Likewise.
        (make_rtl_for_nonlocal_decl): Likewise.
        * name-lookup.c (consider_binding_level): Likewise.
        (cp_emit_debug_info_for_using): Likewise.
        * semantics.c (finish_call_expr): Likewise.
        * tree.c (builtin_valid_in_constant_expr_p): Likewise.

2018-08-26  Marek Polacek  <polacek@redhat.com>

        PR c++/87080
        * typeck.c (maybe_warn_pessimizing_move): Do nothing in a template.

        PR c++/87029, Implement -Wredundant-move.
        * typeck.c (treat_lvalue_as_rvalue_p): New function.
        (maybe_warn_pessimizing_move): Call convert_from_reference.
        Warn about redundant moves.

2018-08-24  Marek Polacek  <polacek@redhat.com>

        PR c++/67012
        PR c++/86942
        * decl.c (grokdeclarator): Disallow functions with trailing return
        type with decltype(auto) as its type.  Also check the function if
        it's inner declarator doesn't exist

2018-08-21  Marek Polacek  <polacek@redhat.com>

        PR c++/86499
        * parser.c (cp_parser_lambda_introducer): Give error if a non-local
        lambda has a capture-default.

2018-08-21  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (check_static_variable_definition): Change to return void.

2018-08-21  Marek Polacek  <polacek@redhat.com>

        PR c++/86981, Implement -Wpessimizing-move.
        * typeck.c (decl_in_std_namespace_p): New.
        (is_std_move_p): New.
        (maybe_warn_pessimizing_move): New.
        (can_do_nrvo_p): New, factored out of ...
        (check_return_expr): ... here.  Warn about potentially harmful
        std::move in a return statement.

        PR c++/65043
        * call.c (standard_conversion): Set check_narrowing.
        * typeck2.c (check_narrowing): Use CP_INTEGRAL_TYPE_P rather
        than comparing with INTEGER_TYPE.

        * cp-tree.h: Fix typo.

2018-08-20  David Malcolm  <dmalcolm@redhat.com>

        PR other/84889
        * call.c (build_user_type_conversion_1): Add auto_diagnostic_group
        instance(s).
        (print_error_for_call_failure): Likewise.
        (build_op_call_1): Likewise.
        (build_conditional_expr_1): Likewise.
        (build_new_op_1): Likewise.
        (build_op_delete_call): Likewise.
        (convert_like_real): Likewise.
        (build_over_call): Likewise.
        (build_new_method_call_1): Likewise.
        (joust): Likewise.
        * class.c (check_tag): Likewise.
        (finish_struct_anon_r): Likewise.
        (one_inherited_ctor): Likewise.
        (finalize_literal_type_property): Likewise.
        (explain_non_literal_class): Likewise.
        (find_flexarrays): Likewise.
        (resolve_address_of_overloaded_function): Likewise.
        * constexpr.c (ensure_literal_type_for_constexpr_object): Likewise.
        (is_valid_constexpr_fn): Likewise.
        (cx_check_missing_mem_inits): Likewise.
        * cp-gimplify.c (cp_genericize_r): Likewise.
        * cvt.c (maybe_warn_nodiscard): Likewise.
        * decl.c (warn_extern_redeclared_static): Likewise.
        (check_redeclaration_exception_specification): Likewise.
        (check_no_redeclaration_friend_default_args): Likewise.
        (duplicate_decls): Likewise.
        (redeclaration_error_message): Likewise.
        (warn_misplaced_attr_for_class_type): Likewise.
        * decl2.c (finish_static_data_member_decl): Likewise.
        (no_linkage_error): Likewise.
        (cp_warn_deprecated_use): Likewise.
        * error.c (qualified_name_lookup_error): Likewise.
        * friend.c (make_friend_class): Likewise.
        (do_friend): Likewise.
        * init.c (perform_member_init): Likewise.
        (build_new_1): Likewise.
        (build_vec_delete_1): Likewise.
        (build_delete): Likewise.
        * lex.c (unqualified_name_lookup_error): Likewise.
        * name-lookup.c (check_extern_c_conflict): Likewise.
        (inform_shadowed): New function.
        (check_local_shadow): Add auto_diagnostic_group instances,
        replacing goto "inform_shadowed" label with call to subroutine.
        (set_local_extern_decl_linkage): Add auto_diagnostic_group
        instance(s).
        * parser.c (cp_parser_diagnose_invalid_type_name): Likewise.
        (cp_parser_namespace_name): Likewise.
        * pt.c (check_specialization_namespace): Likewise.
        (check_template_variable): Likewise.
        (warn_spec_missing_attributes): Likewise.
        (check_explicit_specialization): Likewise.
        (process_partial_specialization): Likewise.
        (lookup_template_class_1): Likewise.
        (finish_template_variable): Likewise.
        (do_auto_deduction): Likewise.
        * search.c (check_final_overrider): Likewise.
        (look_for_overrides_r): Likewise.
        * tree.c (maybe_warn_parm_abi): Likewise.
        * typeck.c (cxx_sizeof_expr): Likewise.
        (cp_build_function_call_vec): Likewise.
        (cp_build_binary_op): Likewise.
        (convert_for_assignment): Likewise.
        (maybe_warn_about_returning_address_of_local): Likewise.
        * typeck2.c (abstract_virtuals_error_sfinae): Likewise.
        (check_narrowing): Likewise.

2018-08-17  David Malcolm  <dmalcolm@redhat.com>

        * typeck.c (string_conv_p): Extract location from EXP and use it
        in preference to input_location when issuing warnings.

2018-08-15  David Malcolm  <dmalcolm@redhat.com>

        * call.c: Include "gcc-rich-location.h".
        (convert_like_real): Add range label for "invalid conversion"
        diagnostic.
        (perform_implicit_conversion_flags): Add type label to the
        "could not convert" error.
        * error.c: Include "gcc-rich-location.h".
        (range_label_for_type_mismatch::get_text): New function.
        * typeck.c (convert_for_assignment): Add type label to
        the "cannot convert" error if a location is available.

2018-08-15  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (check_previous_goto_1): When decl_jump_unsafe returns 2
        emit an error instead of a permerror.

2018-08-13  Marek Polacek  <polacek@redhat.com>

        PR c++/57891
        * call.c (struct conversion): Add check_narrowing_const_only.
        (build_converted_constant_expr): Set check_narrowing and
        check_narrowing_const_only.  Give error if expr is error node.
        (convert_like_real): Pass it to check_narrowing.
        * cp-tree.h (check_narrowing): Add a default parameter.
        * decl.c (compute_array_index_type): Use input_location instead of
        location_of.
        * pt.c (convert_nontype_argument): Return NULL_TREE if tf_error.
        * typeck2.c (check_narrowing): Don't warn for instantiation-dependent
        expressions.  Call maybe_constant_value instead of
        fold_non_dependent_expr.  Don't mention { } in diagnostic.  Only check
        narrowing for constants if CONST_ONLY.

2018-08-13  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/71625
        * decl.c (check_initializer):  Call braced_list_to_string.
        (eval_check_narrowing): New function.
        * gcc/cp/typeck2.c (digest_init_r): Accept strings literals
        as initilizers for all narrow character types.

2018-08-13  Marek Polacek  <polacek@redhat.com>

        P0806R2 - Deprecate implicit capture of this via [=]
        * lambda.c (add_default_capture): Formatting fixes.  Warn about
        deprecated implicit capture of this via [=].

        PR c++/86915
        * decl.c (create_array_type_for_decl): Handle null name.

2018-08-10  Jason Merrill  <jason@redhat.com>

        PR c++/86728 - C variadic generic lambda.
        * parser.c (cp_parser_parameter_declaration): Don't turn 'auto' into
        a pack if it's followed by a declarator-id.

2018-08-08  Jakub Jelinek  <jakub@redhat.com>

        P0595R1 - is_constant_evaluated
        * cp-tree.h (enum cp_built_in_function): New.
        (maybe_constant_init): Add pretend_const_required argument.
        * typeck2.c (store_init_value): Pass true as new argument to
        maybe_constant_init.
        * constexpr.c (constexpr_fn_retval): Check also DECL_BUILT_IN_CLASS
        for BUILT_IN_UNREACHABLE.
        (struct constexpr_ctx): Add pretend_const_required field.
        (cxx_eval_builtin_function_call): Use DECL_IS_BUILTIN_CONSTANT_P
        macro.  Handle CP_BUILT_IN_IS_CONSTANT_EVALUATED.  Check also
        DECL_BUILT_IN_CLASS for BUILT_IN_UNREACHABLE.
        (cxx_eval_outermost_constant_expr): Add pretend_const_required
        argument, initialize pretend_const_required field in ctx.  If the
        result is TREE_CONSTANT and non_constant_p, retry with
        pretend_const_required false if it was true.
        (is_sub_constant_expr): Initialize pretend_const_required_field in
        ctx.
        (cxx_constant_value): Pass true as pretend_const_required to
        cxx_eval_outermost_constant_expr.
        (maybe_constant_value): Pass false as pretend_const_required to
        cxx_eval_outermost_constant_expr.
        (fold_non_dependent_expr): Likewise.
        (maybe_constant_init_1): Add pretend_const_required argument, pass it
        down to cxx_eval_outermost_constant_expr.  Pass !allow_non_constant
        instead of false as strict to cxx_eval_outermost_constant_expr.
        (maybe_constant_init): Add pretend_const_required argument, pass it
        down to maybe_constant_init_1.
        (cxx_constant_init): Pass true as pretend_const_required to
        maybe_constant_init_1.
        * cp-gimplify.c (cp_gimplify_expr): Handle CALL_EXPRs to
        CP_BUILT_IN_IS_CONSTANT_EVALUATED.
        (cp_fold): Don't fold CP_BUILT_IN_IS_CONSTANT_EVALUATED calls.
        * decl.c: Include langhooks.h.
        (cxx_init_decl_processing): Register __builtin_is_constant_evaluated
        built-in.
        * tree.c (builtin_valid_in_constant_expr_p): Return true for
        CP_BUILT_IN_IS_CONSTANT_EVALUATED.
        * pt.c (declare_integer_pack): Initialize DECL_FUNCTION_CODE.

        PR c++/86836
        * pt.c (tsubst_expr): For structured bindings, call tsubst_decomp_names
        before tsubst_init, not after it.

        PR c++/86738
        * constexpr.c (cxx_eval_binary_expression): For arithmetics involving
        NULL pointer set *non_constant_p to true.
        (cxx_eval_component_reference): For dereferencing of a NULL pointer,
        set *non_constant_p to true and return t.

2018-08-07  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/59480, DR 136
        * decl.c (check_no_redeclaration_friend_default_args): New.
        (duplicate_decls): Use the latter; also check that a friend
        declaration specifying default arguments is a definition.

2018-08-07  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR c++/79133
        * name-lookup.c (check_local_shadow): Reject captures and parameters
        with the same name.

2018-08-06  Marek Polacek  <polacek@redhat.com>

        PR c++/86767
        * constexpr.c (cxx_eval_statement_list): Handle continue.

2018-08-03  David Malcolm  <dmalcolm@redhat.com>
            Jonathan Wakely  <jwakely@redhat.com>

        * decl.c: Include "gcc-rich-location.h".
        (add_return_star_this_fixit): New function.
        (finish_function): When warning about missing return statements in
        functions returning non-void, add a "return *this;" fix-it hint for
        assignment operators.

2018-08-03  Jason Merrill  <jason@redhat.com>

        PR c++/86706
        * class.c (build_base_path): Use currently_open_class.

2018-08-02  David Malcolm  <dmalcolm@redhat.com>

        * error.c (cxx_print_error_function): Duplicate "file" before
        passing it to pp_set_prefix.
        (cp_print_error_function): Use pp_take_prefix when saving the
        existing prefix.

2018-08-02  Richard Biener  <rguenther@suse.de>

        PR c++/86763
        * class.c (layout_class_type): Copy TYPE_TYPELESS_STORAGE
        to the CLASSTYPE_AS_BASE.

2018-08-01  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/86650
        * error.c (cp_printer): Move usage of EXPR_LOCATION (t) and
        TREE_BLOCK (t) from within percent_K_format to this callsite.

2018-08-01  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/86661
        * class.c (note_name_declared_in_class): Use location_of in permerror
        instead of DECL_SOURCE_LOCATION (for OVERLOADs).

2018-07-31  Tom de Vries  <tdevries@suse.de>

        PR debug/86687
        * optimize.c (update_cloned_parm): Copy DECL_BY_REFERENCE.

2018-07-31  Jakub Jelinek  <jakub@redhat.com>

        P1008R1 - prohibit aggregates with user-declared constructors
        * class.c (check_bases_and_members): For C++2a set
        CLASSTYPE_NON_AGGREGATE based on TYPE_HAS_USER_CONSTRUCTOR rather than
        type_has_user_provided_or_explicit_constructor.

2018-07-31  Martin Liska  <mliska@suse.cz>

        PR c++/86653
        * parser.c (cp_parser_condition): Initialize non_constant_p
        to false.

2018-07-28  David Malcolm  <dmalcolm@redhat.com>

        * error.c (cp_printer): In the leading comment, move "%H" and "%I"
        into alphabetical order, and add missing "%G" and "%K".  Within
        the switch statement, move cases 'G', 'H', 'I' and 'K' so that the
        cases are in alphabetical order.

2018-07-25  Jakub Jelinek  <jakub@redhat.com>

        * cp-tree.h (enum cp_tree_index): Add
        CPTI_{ABI_TAG,ALIGNED,BEGIN,END,GET,TUPLE_{ELEMENT,SIZE}}_IDENTIFIER
        and CPTI_{GNU,TYPE,VALUE,FUN,CLOSURE}_IDENTIFIER.
        (abi_tag_identifier, aligned_identifier, begin_identifier,
        end_identifier, get__identifier, gnu_identifier,
        tuple_element_identifier, tuple_size_identifier, type_identifier,
        value_identifier, fun_identifier, closure_identifier): Define.
        * decl.c (initialize_predefined_identifiers): Initialize the above
        identifiers.
        (get_tuple_size): Use tuple_size_identifier instead of
        get_identifier ("tuple_size") and value_identifier instead of
        get_identifier ("value").
        (get_tuple_element_type): Use tuple_element_identifier instead of
        get_identifier ("tuple_element") and type_identifier instead of
        get_identifier ("type").
        (get_tuple_decomp_init): Use get__identifier instead of
        get_identifier ("get").
        * lambda.c (maybe_add_lambda_conv_op): Use fun_identifier instead of
        get_identifier ("_FUN").
        * parser.c (cp_parser_lambda_declarator_opt): Use closure_identifier
        instead of get_identifier ("__closure").
        (cp_parser_std_attribute): Use gnu_identifier instead of
        get_identifier ("gnu").
        (cp_parser_std_attribute_spec): Likewise.  Use aligned_identifier
        instead of get_identifier ("aligned").
        * class.c (check_abi_tags, inherit_targ_abi_tags): Use
        abi_tag_identifier instead of get_identifier ("abi_tag").

        PR c++/85515
        * cp-tree.h (enum cp_tree_index): Add
        CPTI_FOR_{RANGE,BEGIN,END}{,_}_IDENTIFIER.
        (for_range__identifier, for_begin__identifier, for_end__identifier,
        for_range_identifier, for_begin_identifier, for_end_identifier):
        Define.
        * decl.c (initialize_predefined_identifiers): Initialize
        for_{range,begin,end}{,_}_identifier.
        * parser.c (build_range_temp): Use for_range__identifier instead of
        get_identifier ("__for_range").
        (cp_convert_range_for): Use for_begin__identifier and
        for_end__identifier instead of get_identifier ("__for_begin") and
        get_identifier ("__for_end").
        * semantics.c (finish_for_stmt): Rename "__for_{range,begin,end} "
        local symbols to "__for_{range,begin,end}".

2018-07-23  Jakub Jelinek  <jakub@redhat.com>

        PR c++/86569
        * cp-gimplify.c (cp_fold): Don't fold comparisons into other kind
        of expressions other than INTEGER_CST regardless of TREE_NO_WARNING
        or warn_nonnull_compare.

2018-07-19  Paolo Carlini  <paolo.carlini@oracle.com>

        Revert fix for c++/59480 (and testsuite followup)

        2019-07-18  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/59480, DR 136
        * decl.c (check_no_redeclaration_friend_default_args): New.
        (duplicate_decls): Use the latter; also check that a friend
        declaration specifying default arguments is a definition.

2018-07-18  Jakub Jelinek  <jakub@redhat.com>

        PR c++/86550
        * parser.c (cp_parser_decl_specifier_seq): Diagnose invalid type
        specifier if CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR.

2018-07-18  Marek Polacek  <polacek@redhat.com>

        PR c++/86190 - bogus -Wsign-conversion warning
        * typeck.c (cp_build_binary_op): Fix formatting.  Add a warning
        sentinel.

2018-07-18  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/59480, DR 136
        * decl.c (check_no_redeclaration_friend_default_args): New.
        (duplicate_decls): Use the latter; also check that a friend
        declaration specifying default arguments is a definition.

2018-07-18  Paolo Carlini  <paolo.carlini@oracle.com>

        * class.c (note_name_declared_in_class): Prefer permerror + inform
        to a pair of permerrors; use DECL_SOURCE_LOCATION.

2018-07-18  Richard Biener  <rguenther@suse.de>

        PR debug/86523
        * decl2.c (c_parse_final_cleanups): Call write_out_vars before
        start_static_storage_duration_function sets current_function_decl.

2018-07-17  Jason Merrill  <jason@redhat.com>

        PR c++/86480 - nested variadic lambda and constexpr if.
        * pt.c (find_parameter_packs_r) [IF_STMT]: Don't walk into
        IF_STMT_EXTRA_ARGS.
        * tree.c (cp_walk_subtrees) [DECLTYPE_TYPE]: Set
        cp_unevaluated_operand.
        [ALIGNOF_EXPR] [SIZEOF_EXPR] [NOEXCEPT_EXPR]: Likewise.

2018-07-16  Paolo Carlini  <paolo.carlini@oracle.com>

        * class.c (resolve_address_of_overloaded_function): Don't emit an
        inform if the matching permerror returns false.
        * pt.c (check_specialization_namespace): Likewise.

2018-07-16  Jakub Jelinek  <jakub@redhat.com>

        PR c++/3698
        PR c++/86208
        * cp-gimplify.c (cp_genericize_r): When using extern_decl_map, or
        in TREE_USED flag from stmt to h->to.

2018-07-13  Nathan Sidwell  <nathan@acm.org>

        PR c++/86374
        * pt.c (lookup_template_class_1): Use tsubst_aggr_type for
        contexts that are classes.
        * parser.c (cp_parser_template_id): Combine entering_scope decl &
        initializer.

2018-07-12  Jakub Jelinek  <jakub@redhat.com>

        * decl2.c (cplus_decl_attributes): Don't diagnose vars without mappable
        type here, instead add "omp declare target implicit" attribute.  Add
        that attribute instead of "omp declare target" also when
        processing_template_decl.
        * decl.c (cp_finish_decl): Diagnose vars without mappable type here,
        and before calling cp_omp_mappable_type call complete_type.

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

        PR sanitizer/86406
        * cp-gimplify.c (cp_maybe_instrument_return): Skip trailing
        DEBUG_BEGIN_STMTs.

        PR c++/86443
        * semantics.c (handle_omp_for_class_iterator): Remove lastp argument,
        instead of setting *lastp turn orig_declv elt into a TREE_LIST.
        (finish_omp_for): Adjust handle_omp_for_class_iterator caller.
        * pt.c (tsubst_omp_for_iterator): Allow OMP_FOR_ORIG_DECLS to contain
        TREE_LIST for both the original class iterator and the "last" helper
        var.

2018-07-09  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grokdeclarator): Use rich_location::add_range in three
        more places; include gcc-rich-location.h.

2018-07-07  Aldy Hernandez  <aldyh@redhat.com>

        * decl.c (build_enumerator): Change overflow type to overflow_type.
        * init.c (build_new_1): Same.

2018-07-05  Nathan Sidwell  <nathan@acm.org>

        * cp/decl.c (decls_match): Check SYSTEM_IMPLICIT_EXTERN_C not
        NO_IMPLICIT_EXTERN_C.
        * cp/parser.c (cp_parser_parameter_declaration_clause): Likewise.

2018-07-04  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR c++/86398
        * method.c (is_trivially_xible): Return false
        if is_xible_helper returns a NULL_TREE.

2018-07-03  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (min_location): New.
        (smallest_type_quals_location): Use the latter.
        (check_concept_fn): Use DECL_SOURCE_LOCATION.
        (grokdeclarator): Use accurate locations in a number of error
        messages involving ds_thread, ds_storage_class, ds_virtual,
        ds_constexpr, ds_typedef and ds_friend; exploit min_location.

2018-07-03  Marek Polacek  <polacek@redhat.com>

        PR c++/86201
        * typeck.c (cp_build_binary_op): Check c_inhibit_evaluation_warnings.

2018-07-03  Jason Merrill  <jason@redhat.com>

        PR c++/86378 - functional cast in noexcept-specifier.
        * tree.c (strip_typedefs_expr) [TREE_LIST]: Fix iteration.

2018-07-02  Paolo Carlini  <paolo.carlini@oracle.com>

        * parser.c (set_and_check_decl_spec_loc): Use rich_location::add_range
        in error message about __thread and thread_local at the same time.

2018-06-29  Marek Polacek  <polacek@redhat.com>

        PR c++/86184
        * tree.c (cp_save_expr): Don't call save_expr for TARGET_EXPRs.

2018-06-28  David Malcolm  <dmalcolm@redhat.com>

        * parser.c (cp_parser_error_1): After issuing a conflict marker
        error, consume tokens until the end of the source line.

2018-06-28  Jason Merrill  <jason@redhat.com>

        PR c++/86342 - -Wdeprecated-copy and system headers.
        * decl2.c (cp_warn_deprecated_use): Don't warn about declarations
        in system headers.

2018-06-27  David Malcolm  <dmalcolm@redhat.com>

        PR c++/86329
        * name-lookup.c (consider_binding_level): Filter out names that
        match anon_aggrname_p.

2018-06-27  Jason Merrill  <jason@redhat.com>

        * name-lookup.c (do_pushtag): If we skip a class level, also skip
        its template level.

2018-06-26  Jason Merrill  <jason@redhat.com>

        PR c++/86320 - memory-hog with std::array of pair
        * typeck2.c (process_init_constructor_array): Only compute a
        constant initializer once.

        PR c++/80290 - memory-hog with std::pair.
        * pt.c (fn_type_unification): Add convs parameter.
        (check_non_deducible_conversion): Remember conversion.
        (check_non_deducible_conversions): New.  Do checks here.
        (type_unification_real): Not here.  Remove flags parm.
        * call.c (add_function_candidate): Make convs a parameter.
        Don't recalculate the conversion if it's already set.
        (add_template_candidate_real): Allocate convs here.
        (good_conversion, conv_flags): New.

2018-06-26  Jakub Jelinek  <jakub@redhat.com>

        PR c++/86291
        * parser.c (cp_parser_omp_for_loop_init): Change for_block argument
        type from vec<tree, va_gc> * to vec<tree, va_gc> *&.

2018-06-23  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (bad_specifiers): Add const location_t* parameter and
        use locations in error messages about 'inline' and 'virtual'.
        (mark_inline_variable): Add location_t parameter and use it in
        error_at and pedwarn messages.
        (grokdeclarator): Use declspecs->locations[ds_constexpr],
        declspecs->locations[ds_concept], declspecs->locations[ds_virtual],
        declspecs->locations[ds_inline] in many error messages; adjust
        bad_specifiers and mark_inline_variable calls.
        (grokvardecl): Use declspecs->locations[ds_concept] in error message.

2018-06-22  Jason Merrill  <jason@redhat.com>

        PR c++/86219 - ICE with erroneous initializer in template.
        * constexpr.c (fold_non_dependent_expr): Add complain parm.
        * call.c, expr.c, init.c, pt.c, semantics.c, typeck.c, typeck2.c:
        Pass it.
        * call.c (build_cxx_call): Don't mess with builtins in a template.
        * typeck2.c (store_init_value): If fold_non_dependent_expr didn't
        produce a constant value, go back to the uninstantiated form.

        Avoid taking the address of something just because it's in parens.
        * constexpr.c (same_type_ignoring_tlq_and_bounds_p): New.
        (cxx_fold_indirect_ref): Use it.
        (cxx_eval_constant_expression) [VIEW_CONVERT_EXPR]: Use it.
        * cp-tree.h (REF_PARENTHESIZED_P): Allow VIEW_CONVERT_EXPR.
        * semantics.c (force_paren_expr): Use VIEW_CONVERT_EXPR instead of
        static_cast to reference type.
        (maybe_undo_parenthesized_ref): Handle VIEW_CONVERT_EXPR.

2018-06-21  Jason Merrill  <jason@redhat.com>

        * pt.c (tsubst) [TEMPLATE_TYPE_PARM]: Use TEMPLATE_PARM_DESCENDANTS.

        * name-lookup.c (do_push_to_top_level): Don't allocate
        current_lang_base.
        (do_pop_from_top_level): Release current_lang_base.

        Let -fmem-report see callers of cxx_make_type.
        * lex.c (cxx_make_type): Add MEM_STAT_DECL.
        (make_class_type): Likewise.
        (cxx_make_type_hook): New.
        * cp-objcp-common.h (LANG_HOOKS_MAKE_TYPE): Use cxx_make_type_hook.

2018-06-20  Nathan Sidwell  <nathan@acm.org>

        PR c++/85634
        * friend.c (add_friend): Keep lookup sets of tempate sets.

2018-06-20  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grokfndecl): Add const cp_decl_specifier_seq* parameter;
        tidy handling of a null location_t argument; use proper location
        information in a few additional error messages.
        (grokdeclarator): Update calls.

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

        * parser.c (cp_parser_omp_clause_name): Add support for finalize
        and if_present. Make present_or_{copy,copyin,copyout,create} aliases
        to their non-present_or_* counterparts. Make 'self' an alias to
        PRAGMA_OACC_CLAUSE_HOST.
        (cp_parser_oacc_data_clause): Update GOMP mappings for
        PRAGMA_OACC_CLAUSE_{COPY,COPYIN,COPYOUT,CREATE,DELETE}. Remove
        PRAGMA_OACC_CLAUSE_{SELF,PRESENT_OR_*}.
        (cp_parser_oacc_all_clauses): Handle finalize and if_present clauses.
        Remove support for present_or_* clauses.
        (OACC_KERNELS_CLAUSE_MASK): Remove PRESENT_OR_* clauses.
        (OACC_PARALLEL_CLAUSE_MASK): Likewise.
        (OACC_DECLARE_CLAUSE_MASK): Likewise.
        (OACC_DATA_CLAUSE_MASK): Likewise.
        (OACC_ENTER_DATA_CLAUSE_MASK): Remove PRESENT_OR_* clauses.
        (OACC_EXIT_DATA_CLAUSE_MASK): Add FINALIZE clause.
        (OACC_UPDATE_CLAUSE_MASK): Remove SELF, add IF_PRESENT.
        (cp_parser_oacc_declare): Remove PRESENT_OR_* clauses.
        * pt.c (tsubst_omp_clauses): Handle IF_PRESENT and FINALIZE.
        * semantics.c (finish_omp_clauses): Handle IF_PRESENT and FINALIZE.

2018-06-20  Marek Polacek  <polacek@redhat.com>

        PR c++/86240
        * constexpr.c (cxx_eval_constant_expression): Handle ABSU_EXPR.
        (fold_simple_1): Likewise.
        * error.c (dump_expr): Likewise.

2018-06-20  Nathan Sidwell  <nathan@acm.org>

        PR c++/85634
        * cp-tree.h (lookup_keep): Drop KEEP parm.
        (lookup_list_keep): Delete.
        (maybe_get_fns): Declare.
        * parser.c (cp_parser_primary_expression): Call lookup_keep here.
        (cp_parser_template_id): Not here ...
        * decl.c (cp_finish_decl): ... nor here ...
        * init.c (build_raw_new_expr): ... nor here ...
        * pt.c (process_template_parm): ... nor here ...
        * semantics.c (perform_koenig_lookup): Call lookup_keep.
        (finish_call_expr): Not here.
        * tree.c (ovl_cache): Delete.
        (ovl_make, ovl_copy): No cache.
        (lookup_keep): Always keep.
        (lookup_list_keep): Delete.
        (maybe_get_fns): New, broken out of ...
        (get_fns): ... here.  Call it.
        (built_min_nt_loc, build_min, build_min_non_dep): Drop lookup_keep.
        (build_min_nt_call_vec): Likewise.

2018-06-19  Jason Merrill  <jason@redhat.com>

        * cp-tree.h (CONSTRUCTOR_NO_IMPLICIT_ZERO): Remove.
        * constexpr.c: Use CONSTRUCTOR_NO_CLEARING instead.

        PR c++/86182 - ICE with anonymous union passed to template.
        * pt.c (tsubst_expr) [DECL_EXPR]: Handle an anonymous union type
        used to declare a named variable.

2018-06-18  Jason Merrill  <jason@redhat.com>

        * tree.c (cp_expr_location): New.
        * cp-tree.h (cp_expr_loc_or_loc): New.
        * call.c, cvt.c, constexpr.c, constraint.cc, cp-gimplify.c, decl.c,
        error.c, init.c, lex.c, parser.c, pt.c, semantics.c, typeck.c,
        typeck2.c: Use it instead of EXPR_LOC_OR_LOC.

        * parser.c (cp_parser_lambda_expression): Use a range for
        LAMBDA_EXPR_LOCATION.

        PR c++/86200 - ICE with unexpanded pack in lambda parameter.
        * pt.c (find_parameter_packs_r) [LAMBDA_EXPR]: Also look into the
        function type.

        PR c++/81060 - ICE with unexpanded parameter pack.
        * pt.c (check_for_bare_parameter_packs): Add loc parameter.
        * decl.c (grokdeclarator): Call it for qualifying_scope.

        PR c++/86171 - ICE with recursive alias instantiation.
        * pt.c (tsubst_decl): Handle recursive alias instantiation.

2018-06-18  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (duplicate_decls): Consistently use DECL_SOURCE_LOCATION
        in errors about redefined default arguments; tidy.

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

        * constexpr.c (potential_constant_expression_1): Handle ABSU_EXPR.
        * cp-gimplify.c (cp_fold): Likewise.

2018-06-15  Jason Merrill  <jason@redhat.com>

        PR c++/86147 - wrong capture for template argument.
        * expr.c (mark_use): Look through NOP_EXPR.

        * name-lookup.c (do_pushtag): Don't look through complete types, but
        don't add to them either.  Get context from current_binding_level.
        * pt.c (tsubst_default_argument): Use push_to/pop_from_top_level.

        * decl.c (start_enum): Do compare dependent underlying type.

        PR c++/82882 - ICE with lambda in template default argument.
        * lambda.c (record_null_lambda_scope): New.
        * pt.c (tsubst_lambda_expr): Use it.
        * name-lookup.c (do_pushtag): Don't give a lambda DECL_CONTEXT of a
        function that isn't open.

        * tree.c (maybe_warn_parm_abi): Inform the location of the class.

2018-06-14  Marek Polacek  <polacek@redhat.com>

        PR c++/86063
        * decl2.c (cp_check_const_attributes): Skip trees that are not
        TREE_LISTs.

2018-06-14  Jakub Jelinek  <jakub@redhat.com>

        P0624R2 - Default constructible and assignable stateless lambdas
        * method.c (synthesized_method_walk): For C++2a don't mark
        sfk_constructor or sfk_copy_assignment as deleted if lambda has
        no lambda-captures.

2018-06-14  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (duplicate_decls): Use DECL_SOURCE_LOCATION in
        OPT_Wshadow warning_at.
        (grokfndecl): Consistently use the location_t argument in
        literal operator diagnostic messages.
        (grokdeclarator): Use declspecs->locations[ds_storage_class]
        in error_at call.
        * decl2.c (finish_static_data_member_decl): Use DECL_SOURCE_LOCATION
        in permerror call.

2018-06-13  Jason Merrill  <jason@redhat.com>

        PR c++/86099 - ICE with trivial copy and non-trivial default ctor.
        * constexpr.c (instantiate_cx_fn_r): Don't synthesize trivial
        constructors.

        PR c++/86094 - wrong code with defaulted move ctor.
        * class.c (classtype_has_non_deleted_move_ctor): New.
        * tree.c (maybe_warn_parm_abi, type_has_nontrivial_copy_init):
        Handle v12 breakage.

2018-06-12  Jason Merrill  <jason@redhat.com>

        PR c++/86098 - ICE with template placeholder for TTP.
        * typeck.c (structural_comptypes) [TEMPLATE_TYPE_PARM]: Check
        CLASS_PLACEHOLDER_TEMPLATE.

2018-06-12  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl2.c (coerce_new_type, coerce_delete_type): Add location_t
        parameter and adjust error_at calls.
        * decl.c (grok_op_properties): Adjust calls.
        * cp-tree.h (oerce_new_type, coerce_delete_type): Adjust decls.

2018-06-12  Marek Polacek  <polacek@redhat.com>

        Core issue 1331 - const mismatch with defaulted copy constructor
        * class.c (check_bases_and_members): When checking a defaulted
        function, mark it as deleted rather than giving an error.

2018-06-11  Jason Merrill  <jason@redhat.com>

        PR c++/85792 -Wctor-dtor-privacy and inherited constructor.
        * class.c (maybe_warn_about_overly_private_class): Handle inherited
        constructors.

        PR c++/85963 - -Wunused-but-set with ?: in template.
        * pt.c (tsubst_copy_and_build) [COND_EXPR]: Call mark_rvalue_use.

2018-06-11  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grok_op_properties): Consistently use the location
        of the decl; remove special casing of POSTINCREMENT_EXPR and
        POSTDECREMENT_EXPR wrt default arguments.

2018-06-05  Jason Merrill  <jason@redhat.com>

        * constexpr.c (cxx_eval_binary_expression): Special case comparison
        of pointers to members of the same union.

2018-06-11  Jason Merrill  <jason@redhat.com>

        PR c++/86094 - wrong code with defaulted move ctor.
        * tree.c (type_has_nontrivial_copy_init): Fix move ctor handling.

2018-06-10  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grokfndecl): Use the location_t argument in two more places.

2018-06-06  Marek Polacek  <polacek@redhat.com>

        PR c++/85977
        * pt.c (unify): If ELTTYPE has no deducible template parms, skip
        deduction from the list elements.
        (type_unification_real): Check convertibility of list elements.

2018-06-06  Jason Merrill  <jason@redhat.com>

        PR c++/86060 - ICE on range for with -std=c++98.
        * parser.c (cp_parser_init_statement): Don't clobber *decl after
        pedwarn.

        PR c++/85710 - ICE with -Wmemset-elt-size.
        * semantics.c (finish_call_expr): Call warn_for_memset here.
        * parser.c (cp_parser_postfix_expression): Not here.
        (literal_integer_zerop): No longer static.
        * pt.c (build_non_dependent_expr): Don't wrap CONST_DECL.

2018-06-05  Marek Polacek  <polacek@redhat.com>

        PR c++/85976
        * tree.c (cp_tree_equal): Handle USING_DECL.

2018-06-05  Jason Merrill  <jason@redhat.com>

        PR c++/85731 - wrong error with qualified-id in template.
        * semantics.c (finish_qualified_id_expr): build_qualified_name
        for unbound names in the current class.

2018-06-04  Jason Merrill  <jason@redhat.com>

        PR c++/61806 - missed SFINAE with partial specialization.
        * cp-tree.h (deferring_access_check_sentinel): Add deferring_kind
        parameter to constructor.
        * pt.c (instantiate_class_template_1): Enable access checking
        before call to most_specialized_partial_spec.

        PR c++/85765 - SFINAE and non-type default template arg.
        * pt.c (type_unification_real): Do full semantic processing if
        substituting a partial args list replaces all template parms.

2018-06-03  Jason Merrill  <jason@redhat.com>

        PR c++/85739 - ICE with pointer to member template parm.
        * cvt.c (perform_qualification_conversions): Use cp_fold_convert.

2018-06-02  Jason Merrill  <jason@redhat.com>

        PR c++/85761 - ICE with ill-formed use of const outer variable.
        * expr.c (mark_use): Handle location wrappers.

2018-06-01  Jason Merrill  <jason@redhat.com>

        PR c++/85764 - bogus 'this' not captured error.
        * lambda.c (resolvable_dummy_lambda): Use nonlambda_method_basetype.
        (nonlambda_method_basetype): Handle NSDMI.

        CWG 1581: When are constexpr member functions defined?
        * constexpr.c (instantiate_cx_fn_r, instantiate_constexpr_fns): New.
        (cxx_eval_outermost_constant_expr): Call instantiate_constexpr_fns.

        PR c++/58281 - explicit instantiation of constexpr
        * pt.c (mark_decl_instantiated): Clear DECL_EXTERNAL.

        * pt.c (instantiate_decl): Any defaulted function is defined.

2018-05-30  Jonathan Wakely  <jwakely@redhat.com>

        PR c++/77777
        * call.c (resolve_args): Use location of expression, not current input
        location.

2018-05-30  Ville Voutilainen  <ville.voutilainen@gmail.com>

        Do not warn about zero-as-null when NULL is used.
        * call.c (conversion_null_warnings): Check for pointer
        types converted from zero constants.
        (convert_like_real): Add a warning sentinel at the end.
        * tree.c (maybe_warn_zero_as_null_pointer_constant): Also
        check null_node_p.

2018-05-30  Jason Merrill  <jason@redhat.com>

        PR c++/85807 - ICE with call in template NSDMI.
        * init.c (get_nsdmi): Use push_to/pop_from_top_level.
        * tree.c (bot_manip): Don't set_flags_from_callee in a template.

        PR c++/85873 - constant initializer_list array not in .rodata.
        * tree.c (build_target_expr): Set TREE_READONLY.
        * call.c (set_up_extended_ref_temp): Set TREE_READONLY.

        * parser.c (cp_parser_check_condition_declarator): Handle
        cp_error_declarator.

2018-05-30  Jonathan Wakely  <jwakely@redhat.com>

        * typeck.c (cxx_sizeof_or_alignof_type): Return size_one_node instead
        of using it in dead store.

2018-05-29  Jason Merrill  <jason@redhat.com>

        PR c++/67445 - returning temporary initializer_list.
        PR c++/67711 - assigning from temporary initializer_list.
        PR c++/48562 - new initializer_list.
        * typeck.c (maybe_warn_about_returning_address_of_local): Also warn
        about returning local initializer_list.
        * cp-tree.h (AUTO_TEMP_NAME, TEMP_NAME_P): Remove.
        * call.c (build_over_call): Warn about assignment from temporary
        init_list.
        * init.c (build_new_1): Warn about 'new std::initializer_list'.
        (find_list_begin, maybe_warn_list_ctor): New.
        (perform_member_init): Use maybe_warn_list_ctor.

2018-05-29  Marek Polacek  <polacek@redhat.com>

        PR c++/85883
        * init.c (build_new): Handle deducing a class with new
        with more than one argument.

2018-05-29  Jakub Jelinek  <jakub@redhat.com>

        PR c++/85952
        * init.c (build_aggr_init): For structured binding initialized from
        array call mark_rvalue_use on the initializer.

2018-05-28  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * decl2.c (start_static_storage_duration_function): Use
        splay_tree_delete_pointers.

2018-05-25  Jason Merrill  <jason@redhat.com>

        PR c++/85815 - reference to member of enclosing template.
        * search.c (lookup_base): Use currently_open_class.
        (lookup_member): Use it regardless of -fconcepts.
        * parser.c (cp_parser_postfix_dot_deref_expression): Check it.

        CWG 616, 1213 - value category of subobject references.
        * tree.c (lvalue_kind): Fix handling of ARRAY_REF of pointer.

2018-05-24  Jason Merrill  <jason@redhat.com>

        PR c++/85842 - -Wreturn-type, constexpr if and generic lambda.
        * pt.c (tsubst_lambda_expr): Copy current_function_returns_* to
        generic lambda.

2018-05-24  Ville Voutilainen  <ville.voutilainen@gmail.com>

        Pedwarn on a non-standard position of a C++ attribute.
        * parser.c (cp_parser_namespace_definition): Pedwarn about attributes
        after the namespace name.

2018-05-24  Paolo Carlini  <paolo.carlini@oracle.com>

        * cp-tree.h (INDIRECT_TYPE_P): New.
        * call.c (build_trivial_dtor_call, maybe_warn_class_memaccess,
        joust): Use it instead of POINTER_TYPE_P.
        * class.c (update_vtable_entry_for_fn, find_flexarrays,
        * fixed_type_or_null, resolves_to_fixed_type_p): Likewise.
        * constexpr.c (cxx_eval_binary_expression, cxx_fold_indirect_ref,
        * cxx_eval_increment_expression, potential_constant_expression_1):
        Likewise.
        * cp-gimplify.c (cp_gimplify_expr, cp_genericize_r): Likewise.
        * cp-objcp-common.c (cxx_get_alias_set): Likewise.
        * cp-ubsan.c (cp_ubsan_maybe_instrument_member_call,
        cp_ubsan_maybe_instrument_downcast): Likewise.
        * cvt.c (cp_convert_to_pointer, ocp_convert,
        cp_get_fndecl_from_callee, maybe_warn_nodiscard, convert): Likewise.
        * cxx-pretty-print.c (cxx_pretty_printer::abstract_declarator,
        pp_cxx_offsetof_expression_1): Likewise.
        * decl.c (grokparms, static_fn_type): Likewise.
        * decl2.c (grokbitfield): Likewise.
        * error.c (dump_expr): Likewise.
        * except.c (initialize_handler_parm, check_noexcept_r): Likewise.
        * init.c (warn_placement_new_too_small): Likewise.
        * lambda.c (build_capture_proxy, add_capture): Likewise.
        * parser.c (cp_parser_omp_for_loop): Likewise.
        * pt.c (convert_nontype_argument, fn_type_unification,
        uses_deducible_template_parms, check_cv_quals_for_unify,
        dependent_type_p_r): Likewise.
        * search.c (check_final_overrider): Likewise.
        * semantics.c (handle_omp_array_sections, finish_omp_clauses,
        finish_omp_for): Likewise.
        * tree.c (cp_build_qualified_type_real): Likewise.
        * typeck.c (build_class_member_access_expr,
        finish_class_member_access_expr, build_x_indirect_ref,
        cp_build_indirect_ref_1, cp_build_binary_op, build_const_cast_1):
        Likewise.

2018-05-24  Jason Merrill  <jason@redhat.com>

        PR c++/85864 - literal template and default template arg.
        * pt.c (instantiation_dependent_r): Handle NONTYPE_ARGUMENT_PACK.

2018-05-24  Marek Polacek  <polacek@redhat.com>

        PR c++/85847
        * init.c (build_new_1): Use fold_non_dependent_expr.  Use a dedicated
        variable for its result.  Fix a condition.
        (build_new): Use fold_non_dependent_expr.  Tweak a condition.

2018-05-23  Jason Merrill  <jason@redhat.com>

        Fix cast to rvalue reference from prvalue.
        * cvt.c (diagnose_ref_binding): Handle rvalue reference.
        * rtti.c (build_dynamic_cast_1): Don't try to build a reference to
        non-class type.  Handle xvalue argument.
        * typeck.c (build_reinterpret_cast_1): Allow cast from prvalue to
        rvalue reference.
        * semantics.c (finish_compound_literal): Do direct-initialization,
        not cast, to initialize a reference.

        CWG 616, 1213 - value category of subobject references.
        * tree.c (lvalue_kind): A reference to a subobject of a prvalue is
        an xvalue.
        * typeck2.c (build_m_component_ref): Likewise.
        * typeck.c (cp_build_addr_expr_1, lvalue_or_else): Remove diagnostic
        distinction between temporary and xvalue.

2018-05-23  Marek Polacek  <polacek@redhat.com>

        Implement P0614R1, Range-based for statements with initializer.
        * parser.c (cp_parser_range_based_for_with_init_p): New.
        (cp_parser_init_statement): Use it.  Parse the optional init-statement
        for a range-based for loop.
        (cp_parser_skip_to_closing_parenthesis_1): Handle balancing ?:.

2018-05-22  Jason Merrill  <jason@redhat.com>

        PR c++/81420 - not extending temporary lifetime.
        * call.c (extend_ref_init_temps_1): Handle ARRAY_REF.
        * class.c (build_base_path): Avoid redundant move of an rvalue.

        PR c++/85866 - error with .* in default template arg.
        * pt.c (tsubst_copy_and_build): Handle partial instantiation.

2018-05-21  Paolo Carlini  <paolo.carlini@oracle.com>

        * parser.c (cp_parser_parameter_declaration_list): Remove
        bool* parameter.
        (cp_parser_parameter_declaration_clause): Adjust.
        (cp_parser_cache_defarg): Likewise.

2018-05-21  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84588
        * parser.c (cp_parser_maybe_commit_to_declaration,
        cp_parser_check_condition_declarator): New.
        (cp_parser_simple_declaration): Use the first above.
        (cp_parser_condition): Use both the above; enforce
        [stmt.stmt]/2 about the declarator not specifying
        a function or an array; improve error-recovery.

2018-05-20  Jason Merrill  <jason@redhat.com>

        PR libstdc++/85843 - warning in logic_error copy constructor.
        * class.c (type_has_user_nondefault_constructor): Check for a
        user-provided ctor, not user-declared.

2018-05-19  Jason Merrill  <jason@redhat.com>

        * pt.c (tsubst_pack_expansion): Sorry rather than abort
        on __integer_pack as subexpression of pattern.

2018-05-18  Jason Merrill  <jason@redhat.com>

        PR c++/58407 - deprecated implicit copy ops.
        * call.c (build_over_call): Warn about deprecated trivial fns.
        * class.c (classtype_has_user_copy_or_dtor): New.
        (type_build_ctor_call): Check TREE_DEPRECATED.
        (type_build_dtor_call): Likewise.
        * decl2.c (cp_warn_deprecated_use): Move from tree.c.
        Add checks.  Return bool.  Handle -Wdeprecated-copy.
        (mark_used): Use it.
        * decl.c (grokdeclarator): Remove redundant checks.
        * typeck2.c (build_functional_cast): Likewise.
        * method.c (lazily_declare_fn): Mark deprecated copy ops.
        * init.c (build_aggr_init): Only set TREE_USED if there are
        side-effects.

2018-05-18  Cesar Philippidis  <cesar@codesourcery.com>

        PR c++/85782
        * cp-gimplify.c (cp_genericize_r): Call genericize_omp_for_stmt for
        OACC_LOOPs.

2018-05-18  Richard Sandiford  <richard.sandiford@linaro.org>

        * constexpr.c (cxx_eval_constant_expression): Remove FMA_EXPR handling.
        (potential_constant_expression_1): Likewise.

2018-05-16  Marek Polacek  <polacek@redhat.com>

        PR c++/85363
        * call.c (set_flags_from_callee): Handle AGGR_INIT_EXPRs too.
        * tree.c (bot_manip): Call set_flags_from_callee for
        AGGR_INIT_EXPRs too.

2018-05-15  Jason Merrill  <jason@redhat.com>

        * cp-tree.h (cp_expr): Remove copy constructor.
        * mangle.c (struct releasing_vec): Declare copy constructor.

        * constexpr.c (cxx_eval_vec_init_1): Pass tf_none if ctx->quiet.

        PR c++/64372 - CWG 1560, gratuitous lvalue-rvalue conversion in ?:
        * call.c (build_conditional_expr_1): Don't force_rvalue when one arm
        is a throw-expression.

2018-05-15  Paolo Carlini  <paolo.carlini@oracle.com>

        * cp-tree.h (DECL_MAYBE_IN_CHARGE_CDTOR_P): New.
        (FOR_EACH_CLONE): Update.
        * decl.c (grokdeclarator): Use it.
        * decl2.c (vague_linkage_p): Likewise.
        * mangle.c (mangle_decl): Likewise.
        * method.c (lazily_declare_fn): Likewise.
        * optimize.c (can_alias_cdtor, maybe_clone_body): Likewise.
        * repo.c (repo_emit_p): Likewise.
        * tree.c (decl_linkage): Likewise.

2018-05-14  Jason Merrill  <jason@redhat.com>

        Handle TYPE_HAS_LATE_RETURN_TYPE like ref-qualifier and eh spec.
        * tree.c (build_cp_fntype_variant): New.
        (build_ref_qualified_type, build_exception_variant)
        (strip_typedefs, cxx_copy_lang_qualifiers): Use it.
        (cxx_type_hash_eq, cp_check_qualified_type): Check
        TYPE_HAS_LATE_RETURN_TYPE.
        (cp_build_type_attribute_variant): Check cxx_type_hash_eq.
        (cp_build_qualified_type_real): No need to preserve C++ qualifiers.
        * class.c (build_clone): Use cxx_copy_lang_qualifiers.
        (adjust_clone_args): Likewise.
        * decl.c (grokfndecl): Add late_return_type_p parameter.  Use
        build_cp_fntype_variant.
        (grokdeclarator): Pass late_return_type_p to grokfndecl.
        (check_function_type): Use cxx_copy_lang_qualifiers.
        (static_fn_type): Use cxx_copy_lang_qualifiers.
        * decl2.c (build_memfn_type, maybe_retrofit_in_chrg)
        (cp_reconstruct_complex_type, coerce_new_type, coerce_delete_type)
        (change_return_type): Use cxx_copy_lang_qualifiers.
        * mangle.c (write_type): Use cxx_copy_lang_qualifiers.
        * parser.c (cp_parser_lambda_declarator_opt): Represent an explicit
        return type on the declarator like a normal trailing return type.
        * pt.c (tsubst_function_type): Use build_cp_fntype_variant.
        (copy_default_args_to_explicit_spec): Use cxx_copy_lang_qualifiers.
        * typeck.c (merge_types): Use build_cp_fntype_variant.

2018-05-14  Paolo Carlini  <paolo.carlini@oracle.com>

        * cp-tree.h (TYPE_REF_P): New.
        (TYPE_OBJ_P, TYPE_REF_OBJ_P, TYPE_REFFN_P): Update.
        * call.c (build_list_conv, build_aggr_conv, standard_conversion,
        direct_reference_binding, reference_binding, implicit_conversion,
        add_builtin_candidate, build_user_type_conversion_1, build_op_call_1,
        build_new_op_1, build_x_va_arg, conv_binds_ref_to_prvalue,
        build_over_call, perform_implicit_conversion_flags,
        extend_ref_init_temps, type_has_extended_temps): Use it.
        * class.c (one_inheriting_sig, check_field_decls,
        check_bases_and_members, find_flexarrays, finish_struct,
        fixed_type_or_null): Likewise.
        * constexpr.c (literal_type_p, cxx_bind_parameters_in_call,
        non_const_var_error, cxx_eval_constant_expression,
        potential_constant_expression_1): Likewise.
        * cp-gimplify.c (omp_var_to_track, omp_cxx_notice_variable,
        cp_genericize_r, cxx_omp_privatize_by_reference,
        cxx_omp_const_qual_no_mutable, cxx_omp_finish_clause,
        cp_fold_maybe_rvalue): Likewise.
        * cp-ubsan.c (cp_ubsan_maybe_instrument_downcast): Likewise.
        * cvt.c (build_up_reference, convert_to_reference,
        convert_from_reference, convert_to_void, noexcept_conv_p,
        fnptr_conv_p): Likewise.
        * decl.c (poplevel, check_for_uninitialized_const_var,
        check_initializer, initialize_local_var, cp_finish_decl,
        get_tuple_decomp_init, cp_finish_decomp, grokdeclarator, copy_fn_p,
        move_signature_fn_p, grok_op_properties, finish_function): Likewise.
        * decl2.c (grok_array_decl, cp_reconstruct_complex_type,
        decl_maybe_constant_var_p): Likewise.
        * error.c (dump_type_prefix, dump_expr): Likewise.
        * except.c (initialize_handler_parm, complete_ptr_ref_or_void_ptr_p,
        is_admissible_throw_operand_or_catch_parameter): Likewise.
        * expr.c (mark_use): Likewise.
        * init.c (build_zero_init_1, build_value_init_noctor,
        perform_member_init, diagnose_uninitialized_cst_or_ref_member_1,
        build_new, build_delete): Likewise.
        * lambda.c (build_lambda_object): Likewise.
        * mangle.c (write_expression, write_template_arg): Likewise.
        * method.c (forward_parm, do_build_copy_constructor,
        do_build_copy_assign, build_stub_object, constructible_expr,
        walk_field_subobs): Likewise.
        * parser.c (cp_parser_omp_for_loop_init,
        cp_parser_omp_declare_reduction_exprs,
        cp_parser_omp_declare_reduction): Likewise.
        * pt.c (convert_nontype_argument_function, convert_nontype_argument,
        convert_template_argument, tsubst_pack_expansion,
        tsubst_function_decl, tsubst_decl, tsubst, tsubst_copy_and_build,
        maybe_adjust_types_for_deduction, check_cv_quals_for_unify, unify,
        more_specialized_fn, invalid_nontype_parm_type_p, dependent_type_p_r,
        value_dependent_expression_p, build_deduction_guide): Likewise.
        * semantics.c (finish_handler_parms, finish_non_static_data_member,
        finish_compound_literal, omp_privatize_field,
        handle_omp_array_sections_1, handle_omp_array_sections,
        cp_check_omp_declare_reduction, finish_omp_reduction_clause,
        finish_omp_declare_simd_methods, cp_finish_omp_clause_depend_sink,
        finish_omp_clauses, finish_decltype_type, capture_decltype,
        finish_builtin_launder): Likewise.
        * tree.c (lvalue_kind, cp_build_reference_type, move,
        cp_build_qualified_type_real, stabilize_expr, stabilize_init): Likewise.
        * typeck.c (cxx_safe_arg_type_equiv_p, build_class_member_access_expr,
        cp_build_indirect_ref_1, convert_arguments, warn_for_null_address,
        cp_build_addr_expr_1, maybe_warn_about_useless_cast,
        build_static_cast_1, build_static_cast, build_reinterpret_cast_1,
        build_const_cast_1, cp_build_c_cast, cp_build_modify_expr,
        convert_for_initialization,
        maybe_warn_about_returning_address_of_local, check_return_expr,
        cp_type_quals, casts_away_constness, non_reference): Likewise.
        * typeck2.c (cxx_readonly_error, store_init_value,
        process_init_constructor_record, build_x_arrow, build_functional_cast,
        add_exception_specifier): Likewise.

2018-05-14  Jason Merrill  <jason@redhat.com>

        * pt.c (tsubst) [ARRAY_TYPE]: Check valid_array_size_p.
        (tsubst_copy_and_build) [NEW_EXPR]: Clear in_decl.

2018-05-11  Jakub Jelinek  <jakub@redhat.com>

        PR c/85696
        * cp-tree.h (cxx_omp_predetermined_sharing_1): New prototype.
        * cp-gimplify.c (cxx_omp_predetermined_sharing): New wrapper around
        cxx_omp_predetermined_sharing_1.  Rename old function to ...
        (cxx_omp_predetermined_sharing_1): ... this.
        * semantics.c (finish_omp_clauses): Use cxx_omp_predetermined_sharing_1
        instead of cxx_omp_predetermined_sharing.

2018-05-10  Jason Merrill  <jason@redhat.com>

        * decl.c (cp_finish_decl): Don't instantiate auto variable.
        (check_static_variable_definition): Allow auto.
        * constexpr.c (ensure_literal_type_for_constexpr_object): Likewise.

        * cp-tree.h (DECL_CONSTRUCTOR_P): Use DECL_CXX_CONSTRUCTOR_P.
        (DECL_DESTRUCTOR_P): Use DECL_CXX_DESTRUCTOR_P.

        Core issue 2310 - conversion to base of incomplete type.
        * class.c (build_base_path): Check COMPLETE_TYPE_P for source type.

        CWG 2267 - list-initialization of reference temporary
        * call.c (reference_binding): List-initializing a reference
        temporary is copy-list-initialization.

        * parser.c (cp_parser_class_head): Use num_template_headers_for_class.

        * pt.c (instantiate_decl): Make sure we aren't trying to do a nested
        instantiation in template context.

        * class.c (vbase_has_user_provided_move_assign): Use
        user_provided_p.

        * lambda.c (lambda_expr_this_capture): Improve logic.

        * decl.c (make_typename_type): s/parameters/arguments/.
        * parser.c (cp_parser_nested_name_specifier_opt): Likewise.
        * pt.c (make_pack_expansion): Correct error message.

2018-05-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/85662
        * cp-gimplify.c (cp_fold): Use fold_offsetof rather than
        fold_offsetof_1, pass TREE_TYPE (x) as TYPE to it and drop the
        fold_convert.

2018-05-10  Eric Botcazou  <ebotcazou@adacore.com>

        PR c++/85400
        * decl2.c (adjust_var_decl_tls_model): New static function.
        (comdat_linkage): Call it on a variable.
        (maybe_make_one_only): Likewise.

2018-05-09  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/85713
        Revert:
        2018-05-08  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84588
        * parser.c (cp_parser_parameter_declaration_list): When the
        entire parameter-declaration-list is erroneous maybe call
        abort_fully_implicit_template.

2018-05-08  Jason Merrill  <jason@redhat.com>

        PR c++/85706 - class deduction under decltype
        * pt.c (for_each_template_parm_r): Handle DECLTYPE_TYPE.  Clear
        *walk_subtrees whether or not we walked into the operand.
        (type_uses_auto): Only look at deduced contexts.

2018-05-08  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84588
        * parser.c (cp_parser_parameter_declaration_list): When the
        entire parameter-declaration-list is erroneous maybe call
        abort_fully_implicit_template.

2018-05-08  Marek Polacek  <polacek@redhat.com>

        PR c++/85695
        * semantics.c (finish_if_stmt_cond): See through typedefs.

2018-05-07  Jason Merrill  <jason@redhat.com>

        PR c++/85646 - lambda visibility.
        * decl2.c (determine_visibility): Don't mess with template arguments
        from the containing scope.
        (vague_linkage_p): Check DECL_ABSTRACT_P before looking at a 'tor
        thunk.

2018-05-07  Nathan Sidwell  <nathan@acm.org>

        Remove fno-for-scope
        * cp-tree.h (DECL_ERROR_REPORTED, DECL_DEAD_FOR_LOCAL)
        (DECL_HAS_SHADOWED_FOR_VAR_P, DECL_SHADOWED_FOR_VAR)
        (SET_DECL_SHADOWED_FOR_VAR): Delete.
        (decl_shadowed_for_var_lookup, decl_shadowed_for_var_insert)
        (check_for_out_of_scope_variable, init_shadowed_var_for_decl):
        Don't declare.
        * name-lookup.h (struct cp_binding_level): Remove
        dead_vars_from_for field.
        * cp-lang.c (cp_init_ts): Delete.
        (LANG_HOOKS_INIT_TS): Override to cp_common_init_ts.
        * cp-objcp-common.c (shadowed_var_for_decl): Delete.
        (decl_shadowed_for_var_lookup, decl_shadowed_for_var_insert)
        (init_shadowed_var_for_decl): Delete.
        * decl.c (poplevel): Remove shadowed for var handling.
        (cxx_init_decl_processing): Remove -ffor-scope deprecation.
        * name-lookup.c (find_local_binding): Remove shadowed for var
        handling.
        (check_local_shadow): Likewise.
        (check_for_out_of_scope_variable): Delete.
        * parser.c (cp_parser_primary_expression): Remove shadowed for var
        handling.
        * pt.c (tsubst_decl): Remove DECL_DEAD_FOR_LOCAL setting.
        * semantics.c (begin_for_scope): Always have a scope.
        (begin_for_stmt, finish_for_stmt): Remove ARM-for scope handling.
        (begin_range_for_stmt, finish_id_expression): Likewise.

2018-05-07  Jason Merrill  <jason@redhat.com>

        PR c++/85618 - ICE with initialized VLA.
        * tree.c (vla_type_p): New.
        * typeck2.c (store_init_value, split_nonconstant_init_1): Check it
        rather than array_of_runtime_bound_p.

2018-05-05  Paolo Carlini  <paolo.carlini@oracle.com>

        * cvt.c (ocp_convert): Early handle the special case of a
        null_ptr_cst_p expr converted to a NULLPTR_TYPE_P type.

2018-05-03  Jason Merrill  <jason@redhat.com>

        PR c++/85600 - virtual delete failure.
        * init.c (build_delete): Always save_expr when deleting.

2018-05-03  Nathan Sidwell  <nathan@acm.org>

        * decl.c (cxx_init_decl_processing): Remove flag_friend_injection.
        * name-lookup.c (do_pushdecl): Likewise.

2018-05-02  Paolo Carlini  <paolo.carlini@oracle.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/68374
        * name-lookup.c (check_local_shadow): Don't handle static old
        declarations in the block handling locals shadowing locals.

2018-05-01  Jason Merrill  <jason@redhat.com>

        PR c++/85587 - error with scoped enum in template.
        * semantics.c (finish_qualified_id_expr): Don't return an
        unqualified IDENTIFIER_NODE.

2018-04-30  Jason Merrill  <jason@redhat.com>

        PR c++/85580 - extern "C" and local variables
        * name-lookup.c (check_extern_c_conflict): Ignore local decls.

        PR c++/84701 - unsigned typeof.
        * decl.c (grokdeclarator): Overhaul diagnostics for invalid use
        of long/short/signed/unsigned.

        PR c++/85305 - pack in lambda init-capture.
        * parser.c (cp_parser_initializer): Add subexpression_p parm; don't
        check_for_bare_parameter_packs in a subexpression.
        (cp_parser_lambda_introducer): Use it.

        PR c++/61982 - dead stores to destroyed objects.
        * call.c (build_trivial_dtor_call): New, assigns a clobber.
        (build_over_call, build_special_member_call): Use it.
        * cp-tree.h: Declare it.
        * init.c (build_delete): Remove trivial path.

        * init.c (build_dtor_call): Use build_special_member_call.
        (build_delete): Remove redundant uses of save_addr.

        * decl.c (build_clobber_this): Use build_clobber.

2018-04-27  Jakub Jelinek  <jakub@redhat.com>

        PR c++/85553
        * init.c (build_zero_init_1): For zero initialization of
        NULLPTR_TYPE_P type use build_int_cst directly.

2018-04-27  David Malcolm  <dmalcolm@redhat.com>

        PR c++/85515
        * name-lookup.c (consider_binding_level): Skip compiler-generated
        variables.
        * search.c (lookup_field_fuzzy_info::fuzzy_lookup_field): Flatten
        nested if statements into a series of rejection tests.  Reject
        lambda-ignored entities as suggestions.

2018-04-27  Jason Merrill  <jason@redhat.com>

        * cvt.c (cp_fold_convert): Use convert_ptrmem.
        * typeck.c (convert_ptrmem): Add a NOP even if no adjustment.

2018-04-27  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84691
        * decl.c (grokdeclarator): Clear friendp upon definition in local
        class definition error.

2018-04-27  Jason Merrill  <jason@redhat.com>

        PR c++/85545 - ICE with noexcept PMF conversion.
        * cvt.c (cp_fold_convert): Pass PMF CONSTRUCTORs to
        build_ptrmemfunc.
        * typeck.c (build_ptrmemfunc): Don't build a NOP_EXPR for zero
        adjustment.
        (build_ptrmemfunc_access_expr): Special-case CONSTRUCTORs.

2018-04-27  Nathan Sidwell  <nathan@acm.org>

        * typeck.c (convert_ptrmem): Move local var decls to initialization.

        * cp-tree.h (TEMPLATE_INFO): Fix comments.
        (TI_PENDING_TEMPLATE_FLAG): Check TEMPLATE_INFO.
        (NON_DEFAULT_TEMPLATE_ARG_COUNT): Wrap line.
        (dump, print_other_binding_stacks): Remove declarations.
        * name-lookup.c (print_other_binding_stack): Make static.
        * pt.c (build_template_decl): Make static.

2018-04-26  Jason Merrill  <jason@redhat.com>

        PR c++/85545 - ICE with noexcept PMF conversion.
        * cvt.c (cp_fold_convert): Handle PMF CONSTRUCTORs directly.

2018-04-25  Nathan Sidwell  <nathan@acm.org>

        PR c++/85437
        PR c++/49171
        * cp-tree.h (REINTERPRET_CAST_P): New.
        * constexpr.c (cxx_eval_constant_expression) <case NOP_EXPR>:
        Reject REINTERPET_CAST_P conversions.  Use cplus_expand_constant
        for non-trivial PTRMEM_CST cases.
        * typeck.c (build_nop_reinterpret): New.
        (build_reinterpret_cast_1): Use it.  Set REINTERPRET_CAST_P on
        NOP_EXPRs returned by cp_convert.

2018-04-23  Jason Merrill  <jason@redhat.com>

        PR c++/69560 - wrong alignof(double) on x86.
        CWG 1879 - Inadequate definition of alignment requirement.
        * cp-tree.h (ALIGNOF_EXPR_STD_P): New.
        * typeck.c (cxx_sizeof_or_alignof_type): Add std_alignof parm.
        (cxx_sizeof_expr, cxx_sizeof_nowarn, cxx_alignas_expr)
        (cxx_alignof_expr): Pass it.
        * parser.c (cp_parser_unary_expression): Pass it.
        * pt.c (tsubst_copy): Copy it.
        (tsubst_copy_and_build): Pass it.
        * decl.c (fold_sizeof_expr): Pass it.

2018-04-23  Jakub Jelinek  <jakub@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/85470 - wrong error with static data member.
        * decl.c (check_initializer): Check DECL_INITIALIZED_IN_CLASS_P.
        * typeck2.c (store_init_value): Likewise.

2018-04-20  Jakub Jelinek  <jakub@redhat.com>

        PR c++/85462
        * cp-tree.h (tinst_level): Remove in_system_header_p member,
        change refcount member from unsigned char to unsigned short,
        add refcount_infinity static data member, adjust comments.
        * pt.c (tinst_level::refcount_infinity): Define.
        (inc_refcount_use): Remove assert, don't increment if refcount
        is already refcount_infinity, adjust comment.
        (dec_refcount_use): Remove assert, don't decrement if refcount
        is refcount_infinity, adjust comment.
        (push_tinst_level_loc): Formatting fix.

2018-04-19  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84611
        * pt.c (lookup_template_class_1): Check pushtag return value for
        error_mark_node.

2018-04-19  Alexandre Oliva  <aoliva@redhat.com>

        PR c++/80290
        * cp-tree.h (tinst_level::free): Fix whitespace.

2018-04-18  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84630
        * pt.c (tsubst_lambda_expr): Check begin_lambda_type return value
        for error_mark_node.

2018-04-18  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84463
        * typeck.c (cp_build_addr_expr_1): Move handling of offsetof-like
        tricks from here to ...
        * cp-gimplify.c (cp_fold) <case ADDR_EXPR>: ... here.  Only use it
        if INDIRECT_REF's operand is INTEGER_CST cast to pointer type.

2018-04-18  Alexandre Oliva <aoliva@redhat.com>

        PR c++/80290
        * cp-tree.h (struct tinst_level): Split decl into tldcl and
        targs.  Add private split_list_p, tree_list_p, and not_list_p
        inline const predicates; to_list private member function
        declaration; free public member function declaration; list_p,
        get_node and maybe_get_node accessors, and refcount data
        member.  Narrow errors to unsigned short.
        * error.c (print_instantiation_full_context): Use new
        accessors.
        (print_instantiation_partial_context_line): Likewise.  Drop
        const from tinst_level-typed parameter.
        * mangle.c (mangle_decl_string): Likewise.
        * pt.c (freelist): New template class.
        (tree_list_freelist_head): New var.
        (tree_list_freelist): New fn, along with specializations.
        (tinst_level_freelist_head): New var.
        (pending_template_freelist_head): Likewise.
        (tinst_level_freelist, pending_template_freelist): New fns.
        (tinst_level::to_list, tinst_level::free): Define.
        (inc_refcount_use, dec_refcount_use): New fns for tinst_level.
        (set_refcount_ptr): New template fn.
        (add_pending_template): Adjust for refcounting, freelists and
        new accessors.
        (neglectable_inst_p): Take a NULL d as a non-DECL.
        (limit_bad_template_recursion): Use new accessors.
        (push_tinst_level): New overload to create the list.
        (push_tinst_level_loc): Make it static, split decl into two
        args, adjust tests and initialization to cope with split
        lists, use freelist, adjust for refcounting.
        (push_tinst_level_loc): New wrapper with the old interface.
        (pop_tinst_level): Adjust for refcounting.
        (record_last_problematic_instantiation): Likewise.
        (reopen_tinst_level): Likewise.  Use new accessors.
        (instantiate_alias_template): Adjust for split list.
        (fn_type_unification): Likewise.
        (get_partial_spec_bindings): Likewise.
        (instantiate_pending_templates): Use new accessors.  Adjust
        for refcount.  Release pending_template to freelist.
        (instantiating_current_function_p): Use new accessors.

2018-04-16  Alexandre Oliva <aoliva@redhat.com>

        PR c++/85039
        * parser.c (cp_parser_builtin_offset): Reject type definitions.
        * mangle.c (nested_anon_class_index): Avoid crash returning -1
        if we've seen errors.

2018-04-12  David Malcolm  <dmalcolm@redhat.com>

        PR c++/85385
        * name-lookup.c (macro_use_before_def::maybe_make): New function,
        checking that the use is indeed before the definition.
        (macro_use_before_def::macro_use_before_def): Make private.
        (macro_use_before_def::~macro_use_before_def): Make private.  Move
        check for UNKNOWN_LOCATION to macro_use_before_def::maybe_make.
        (lookup_name_fuzzy): Call macro_use_before_def::maybe_make rather
        than using new directly.

2018-04-12  Jason Merrill  <jason@redhat.com>

        PR c++/85356 - ICE with pointer to member function.
        * pt.c (maybe_instantiate_noexcept): Do instantiate in templates if
        flag_noexcept_type.  Build the new spec within the function context.
        * except.c (build_noexcept_spec): Do get constant value in templates
        if flag_noexcept_type.
        * decl.c (check_redeclaration_exception_specification): Don't
        instantiate noexcept on a dependent declaration.

2018-04-12  Marek Polacek  <polacek@redhat.com>

        PR c++/85258
        * constexpr.c (reduced_constant_expression_p): Return false for null
        trees.

2018-04-11  Marek Polacek  <polacek@redhat.com>

        PR c++/85032
        * constexpr.c (potential_constant_expression_1): Consider conversions
        from classes to literal types potentially constant.

2018-04-10  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/70808
        * init.c (build_zero_init_1): Handle NULLPTR_TYPE_P being true of
        the type like TYPE_PTR_OR_PTRMEM_P.

2018-04-10  Jason Merrill  <jason@redhat.com>

        PR debug/65821 - wrong location for main().
        * call.c (clear_location_r, convert_default_arg): Revert.
        * tree.c (break_out_target_exprs): Add clear_location parm.
        (struct bot_data): New.
        (bot_manip): Clear location if requested.
        * init.c (get_nsdmi): Pass clear_location.

2018-04-10  David Malcolm  <dmalcolm@redhat.com>

        PR c++/85110
        * call.c (get_fndecl_argument_location): Make non-static.
        * cp-tree.h (get_fndecl_argument_location): New decl.
        * typeck.c (convert_for_assignment): When complaining due to
        conversions for an argument, show the location of the parameter
        within the decl.

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

        PR c++/85312 - P0962 cleanup
        * parser.c (cp_parser_perform_range_for_lookup): Remove unreachable
        diagnostics.

2018-04-10  Jason Merrill  <jason@redhat.com>

        PR debug/65821 - wrong location for main().
        * call.c (clear_location_r): New.
        (convert_default_arg): Use it.
        * tree.c (bot_manip): Remove builtin_LINE/FILE handling.

        PR c++/85285 - ICE with flexible array after substitution.
        * pt.c (instantiate_class_template_1): Check for flexible array in
        union.

2018-04-09  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/85227
        * decl.c (cp_finish_decomp): In a template, if the type is incomplete
        issue a pedwarn and defer trying to do bindings.

2018-04-09  Jason Merrill  <jason@redhat.com>

        PR c++/85279 - dump_expr doesn't understand decltype.
        * error.c (dump_expr): Handle DECLTYPE_TYPE.

        PR c++/85262 - ICE with redundant qualification on constructor.
        * call.c (build_new_method_call_1): Move make_args_non_dependent
        after A::A() handling.

        PR c++/85277 - ICE with invalid offsetof.
        * semantics.c (finish_offsetof): Avoid passing non-DECL to %qD.
        Adjust -Winvalid-offsetof diagnostic to say conditionally supported.

        PR c++/85264 - ICE with excess template-parameter-list.
        * parser.c (cp_parser_check_template_parameters): Add template_id_p
        parameter.  Don't allow an extra template header if true.
        (cp_parser_class_head): Pass template_id_p.
        (cp_parser_elaborated_type_specifier): Likewise.
        (cp_parser_alias_declaration): Likewise.
        (cp_parser_check_declarator_template_parameters): Likewise.

2018-04-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/85194
        * parser.c (cp_parser_simple_declaration): For structured bindings,
        if *maybe_range_for_decl is NULL after parsing it, set it to
        error_mark_node.

2018-04-09  Jason Merrill  <jason@redhat.com>

        PR c++/85256 - ICE capturing pointer to VLA.
        * lambda.c (add_capture): Distinguish between variable-size and
        variably-modified types.

2018-04-06  Jason Merrill  <jason@redhat.com>

        PR c++/85214 - ICE with alias, generic lambda, constexpr if.
        * pt.c (extract_locals_r): Remember local typedefs.

2018-04-06  David Malcolm  <dmalcolm@redhat.com>

        PR c++/84269
        * name-lookup.c (struct std_name_hint): Move out of
        get_std_name_hint; add field "min_dialect".
        (get_std_name_hint): Add min_dialect values to all initializers.
        Add <any>, <atomic>, <bitset>, <condition_variable>, <functional>,
        <future>, <istream>, <iterator>, <ostream>, <mutex>, <optional>,
        <shared_mutex>, <string_view>, <thread>, and <variant>.
        Add fstream, ifstream, and ofstream to <fstream>.
        Add istringstream, ostringstream, and stringstream to <sstream>.
        Add basic_string to <string>.
        Add tuple_element and tuple_size to <tuple>.
        Add declval to <utility>.
        Fix ordering of <queue> and <tuple>.
        Return a std_name_hint, rather than a const char *.
        (get_cxx_dialect_name): New function.
        (maybe_suggest_missing_std_header): Detect names that aren't yet
        available in the current dialect, and instead of suggesting a
        missing #include, warn about the dialect.

2018-04-06  Jakub Jelinek  <jakub@redhat.com>

        PR c++/85210
        * pt.c (tsubst_decomp_names): Return error_mark_node and assert
        errorcount is set if tsubst doesn't return a VAR_DECL.

2018-04-06  David Malcolm  <dmalcolm@redhat.com>

        PR c++/85021
        * name-lookup.c (using_directives_contain_std_p): New function.
        (has_using_namespace_std_directive_p): New function.
        (suggest_alternatives_for): Simplify if/else logic using early
        returns.  If no candidates were found, and there's a
        "using namespace std;" directive, call
        maybe_suggest_missing_std_header.
        (maybe_suggest_missing_header): Split later part of the function
        into..
        (maybe_suggest_missing_std_header): New.

2018-04-06  Jason Merrill  <jason@redhat.com>

        PR c++/85242 - ICE with class definition in template parm.
        * cp-tree.h (PROCESSING_REAL_TEMPLATE_DECL_P): False if
        processing_template_parmlist.

        PR c++/85240 - LTO ICE with using of undeduced auto fn.
        * cp-gimplify.c (cp_genericize_r): Discard using of undeduced auto.

2018-04-05  Jakub Jelinek  <jakub@redhat.com>

        PR c++/85209
        * pt.c (tsubst_decomp_names): Don't fail or ICE if DECL_CHAIN (decl3)
        is not prev, if prev == decl.

        PR c++/85208
        * decl.c (start_decl): For DECL_DECOMPOSITION_P decls, don't call
        maybe_apply_pragma_weak here...
        (cp_maybe_mangle_decomp): ... but call it here instead.

2018-04-05  Jason Merrill  <jason@redhat.com>

        PR c++/85136 - ICE with designated init in template.
        * decl.c (maybe_deduce_size_from_array_init): Handle dependent
        designated initializer.
        (check_array_designated_initializer): Update ce->index with the
        constant value.

        PR c++/83808 - ICE with VLA initialization.
        * typeck2.c (process_init_constructor_array): Don't require a VLA
        initializer to have VLA type.

2018-04-05  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/80956
        * call.c (convert_like_real): Fail gracefully for a broken
        std::initializer_list, missing a definition.

        * name-lookup.c (do_pushtag): Tweak message, use %< and %>.

2018-04-05  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84792
        * decl.c (grokdeclarator): Fix diagnostic about typedef name used
        as nested-name-specifier, keep type and TREE_TYPE (decl) in sync.

2018-04-05  Jason Merrill  <jason@redhat.com>

        PR c++/82152 - ICE with class deduction and inherited ctor.
        * pt.c (do_class_deduction): Ignore inherited ctors.

        PR c++/84665 - ICE with array of empty class.
        * decl2.c (cp_check_const_attributes): Use fold_non_dependent_expr.

        PR c++/85228 - ICE with lambda in enumerator in template.
        * pt.c (bt_instantiate_type_proc): Don't assume
        CLASSTYPE_TEMPLATE_INFO is non-null.

2018-04-05  Ville Voutilainen  <ville.voutilainen@gmail.com>

        Implement P0969
        * decl.c (find_decomp_class_base): Check accessibility instead
        of declared access, adjust diagnostic.

2018-04-05  Ville Voutilainen  <ville.voutilainen@gmail.com>

        Implement P0961
        * decl.c (get_tuple_decomp_init): Check the templatedness
        of a member get.

2018-04-05  Jason Merrill  <jason@redhat.com>

        PR c++/85200 - ICE with constexpr if in generic lambda.
        * pt.c (extract_locals_r): Don't record the local specs of variables
        declared within the pattern.

2018-04-05  Alexandre Oliva <aoliva@redhat.com>

        PR c++/84979
        * pt.c (check_auto_in_tmpl_args): New.
        (tsubst_qualified_id): Use it to reject template args
        referencing auto for non-type templates.
        * parser.c (cp_parser_template_id): Likewise.
        * cp-tree.h (check_auto_in_tmpl_args): Declare.
        * typeck2.c (build_functional_cast): Report correct location
        for invalid use of auto.

2018-04-04  Jason Merrill  <jason@redhat.com>

        PR c++/85215 - ICE with copy-init from conversion.
        * call.c (merge_conversion_sequences): Fix type of direct binding
        sequence.

        PR c++/84938 - ICE with division by ~-1.
        * call.c (set_up_extended_ref_temp): Call cp_fully_fold.

        PR c++/84936 - ICE with unexpanded pack in mem-initializer.
        * parser.c (cp_parser_mem_initializer_list): Call
        check_for_bare_parameter_packs.

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

        PR inline-asm/85172
        * constexpr.c (cxx_eval_builtin_function_call): For calls to
        builtin_valid_in_constant_expr_p functions, don't call
        cxx_eval_constant_expression if argument is not
        potential_constant_expression.

        PR c++/85146
        * cp-tree.h (calculate_bases, calculate_direct_bases): Add complain
        argument.
        * semantics.c (calculate_bases): Add complain argument.  Use
        complete_type_or_maybe_complain instead of just complete_type and
        return an empty vector if it fails.  Move make_tree_vector () call
        after early return.  Formatting fixes.
        (calculate_direct_bases): Likewise.  Call release_tree_vector at the
        end.
        (dfs_calculate_bases_post, calculate_bases_helper): Formatting fixes.
        * pt.c (tsubst_pack_expansion): Adjust calculate_bases and
        calculate_direct_bases callers, formatting fixes.

2018-04-04  Jason Merrill  <jason@redhat.com>

        PR c++/85006 - -fconcepts ICE with A<auto...> return type
        * pt.c (tsubst_pack_expansion): Allow unsubstituted auto pack.

        PR c++/85200 - ICE with constexpr if in generic lambda.
        * tree.c (cp_walk_subtrees): Walk into DECL_EXPR in templates.

        PR c++/84221 - bogus -Wunused with attribute and template.
        * decl2.c (is_late_template_attribute): Handle unused and used
        normally on non-TYPE_DECL.

        PR c++/85135 - ICE with omitted template arguments.
        * decl.c (grokdeclarator): Catch deduced class type in trailing
        return type.

        PR c++/85133 - ICE with missing concept initializer.
        * decl.c (cp_finish_decl): If a concept initializer is missing, use
        true.

        PR c++/85118 - wrong error with generic lambda and std::bind.
        * call.c (add_template_conv_candidate): Disable if there are any
        call operators.

        PR c++/85141 - ICE with compound assignment and static member fn.
        * typeck.c (cp_build_modify_expr): Call decay_conversion for RHS of
        compound assignment.

        PR c++/85148 - ICE with 'this' in array NSDMI.
        * tree.c (replace_placeholders_r): Use handled_component_p.

2018-04-04  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR c++/65923
        * decl.c (grokfndecl): Handle standard UDL diagnostics here..
        * parser.c (cp_parser_unqualified_id): ..not here.

2018-04-04  Alexandre Oliva <aoliva@redhat.com>

        PR c++/84943
        * typeck.c (cp_build_addr_expr_1): Mark FUNCTION_DECL as
        used.
        * decl2.c (mark_used): Return without effects if tf_conv.

2018-04-03  Jason Merrill  <jason@redhat.com>

        PR c++/85092 - C++17 ICE with unused list constructor.
        * call.c (conv_binds_ref_to_prvalue): Also count ck_identity
        from a TARGET_EXPR.

        PR c++/85113 - ICE with constexpr and __builtin_constant_p.
        * constexpr.c (cxx_eval_builtin_function_call): Only defer
        __builtin_constant_p if ctx->quiet.

2018-04-03  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84768
        * pt.c (rewrite_template_parm): If the first argument is
        error_mark_node return it immediately.
        (build_deduction_guide): Check the return value of the
        latter for error_mark_node.
        (do_class_deduction): Check the return value of the latter.

2018-04-03  Jason Merrill  <jason@redhat.com>

        * semantics.c (finish_if_stmt_cond): Use
        instantiation_dependent_expression_p.

        PR c++/85149 - generic lambda and constexpr if.
        * pt.c (build_extra_args, add_extra_args): Split from
        tsubst_pack_expansion.
        (tsubst_expr) [IF_STMT]: Use them.
        * cp-tree.h (IF_STMT_EXTRA_ARGS): New.

        * typeck.c (merge_types): Limit matching attribute shortcut to
        the default case.

2018-04-03  Jakub Jelinek  <jakub@redhat.com>

        PR c++/85147
        * pt.c (fixed_parameter_pack_p_1): Punt if parm is error_mark_node.

        PR c++/85140
        * name-lookup.c (handle_namespace_attrs): Return early if attributes
        is error_mark_node.

        PR c++/85134
        * decl.c (cp_finish_decl): If ensure_literal_type_for_constexpr_object
        fails, after clearing DECL_DECLARED_CONSTEXPR_P don't return early,
        instead for static data members clear init and set DECL_EXTERNAL.

2018-04-02  Jason Merrill  <jason@redhat.com>

        PR c++/64095 - auto... parameter pack.
        * parser.c (cp_parser_parameter_declaration): Handle turning autos
        into packs here.
        (cp_parser_parameter_declaration_list): Not here.

2018-03-31  Alexandre Oliva <aoliva@redhat.com>

        PR c++/85027
        * class.c (instantiate_type): Peel off SAVE_EXPR before
        BASELINK.

2018-03-30  Jason Merrill  <jason@redhat.com>

        * typeck2.c (process_init_constructor_record): Use
        init_list_type_node for the CONSTRUCTOR around an anonymous union
        designated initializer.

2018-03-30  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84791
        * semantics.c (finish_omp_reduction_clause): If
        OMP_CLAUSE_REDUCTION_PLACEHOLDER is error_mark_node, return true
        even if processing_template_decl.

2018-03-29  David Malcolm  <dmalcolm@redhat.com>

        PR c++/84269
        * name-lookup.c (get_std_name_hint): Add names from <memory>,
        <tuple>, and <utility>.

2018-03-29  Jason Merrill  <jason@redhat.com>

        PR c++/85093 - too many template args with pack expansion.
        * pt.c (coerce_template_parms): Keep pack expansion args that will
        need to be empty.

2018-03-29  Jason Merrill  <jason@redhat.com>

        * pt.c (build_non_dependent_expr): Propagate expr location.

2018-03-27  Jason Merrill  <jason@redhat.com>

        PR c++/85060 - wrong-code with call to base member in template.
        * search.c (any_dependent_bases_p): Check uses_template_parms
        rather than processing_template_decl.

2018-03-29  David Malcolm  <dmalcolm@redhat.com>

        PR c++/85110
        * typeck.c (convert_for_assignment): When complaining due to
        conversions for an argument, attempt to use the location of the
        argument.

2018-03-28  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/85028
        * pt.c (tsubst_default_argument): Early return if the type of the
        parameter is erroneous.

2018-03-28  Alexandre Oliva <aoliva@redhat.com>

        PR c++/84973
        * decl2.c (note_vague_linkage_fn): Don't defer uninstantiated
        templates.

        PR c++/84968
        * tree.c (strip_typedefs_expr): Reject STATEMENT_LISTs.

2018-03-27  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/85067
        * method.c (defaulted_late_check): Partially revert r253321 changes,
        do not early return upon error.

2018-03-27  Jakub Jelinek  <jakub@redhat.com>

        PR c++/85077
        * cp-gimplify.c (cp_fold) <case CONSTRUCTOR>: For ctors with vector
        type call fold to generate VECTOR_CSTs when possible.

        PR c++/85076
        * tree.c (cp_build_reference_type): If to_type is error_mark_node,
        return it right away.

2018-03-27  Volker Reichelt  <v.reichelt@netcologne.de>

        * search.c (check_final_overrider): Use inform instead of error
        for the diagnostics of the overridden functions.  Tweak wording.

2018-03-27  Jakub Jelinek  <jakub@redhat.com>

        PR c++/85068
        * class.c (update_vtable_entry_for_fn): Don't ICE if base_binfo
        is NULL.  Assert if thunk_binfo is NULL then errorcount is non-zero.

2018-03-27  Paolo Carlini  <paolo.carlini@oracle.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/84632
        * init.c (build_aggr_init): When initializing from array,
        reject anything but CONSTRUCTORs and TARGET_EXPRs.
        (build_vec_init): Handle separately ARRAY_TYPEs.

2018-03-26  Jason Merrill  <jason@redhat.com>

        PR c++/85062 - ICE with alignas in wrong place.
        * decl.c (grokdeclarator): Ignore attributes on type-specifiers
        here.

        PR c++/85049 - ICE with __integer_pack.
        * pt.c (unify_pack_expansion): Don't try to deduce generated packs.
        * cp-tree.h (TEMPLATE_PARM_P): New.

2018-03-23  Jason Merrill  <jason@redhat.com>

        PR c++/78489 - wrong SFINAE behavior.

        PR c++/84489
        * pt.c (type_unification_real): Don't defer substitution failure.

2018-03-23  Jakub Jelinek  <jakub@redhat.com>

        PR c++/85015
        * decl.c (compute_array_index_type): Set osize to mark_rvalue_use
        result.

        PR c++/84942
        * pt.c (tsubst_copy_and_build) <case FIX_TRUNC_EXPR>: Replace
        cp_build_unary_op call with gcc_unreachable ().

2018-03-23  Marek Polacek  <polacek@redhat.com>

        PR c++/85045
        * cxx-pretty-print.c (cxx_pretty_printer::multiplicative_expression):
        Handle EXACT_DIV_EXPR and RDIV_EXPR.  Tweak condition.
        (cxx_pretty_printer::expression): Handle EXACT_DIV_EXPR and RDIV_EXPR.

2018-03-23  Ville Voutilainen  <ville.voutilainen@gmail.com>

        Implement P0962
        * parser.c (cp_parser_perform_range_for_lookup): Change
        the condition for deciding whether to use members.

2018-03-23  Marek Polacek  <polacek@redhat.com>

        PR c++/85033
        * semantics.c (finish_offsetof): Don't allow CONST_DECLs.

2018-03-23  Alexandre Oliva <aoliva@redhat.com>

        PR c++/71251
        * parser.c (cp_parser_alias_declaration): Call
        parser_check_template_parameters.

        PR c++/84789
        * pt.c (resolve_typename_type): Drop assert that stopped
        simplification to template-independent types.  Add assert to
        verify the initial scope is template dependent.
        * parser.c (cp_parser_parse_and_diagnose_invalid_type_name):
        Reparse the id expression as a type-name, not a declarator.

        PR c++/84729
        * init.c (build_vec_init): Error at parenthesized array init.

        PR c++/84610
        PR c++/84642
        PR c++/84942
        * cp-tree.h (temp_override): New template class, generalizing
        a cleanup that was only used...
        * parser.c (cp_parser_parameter_declaration_clause):
        ... here for auto_is_implicit_function_template_parm_p.
        (cp_parser_gnu_attributes_opt): Use it here as well.
        (cp_parser_std_attribute): Likewise.

2018-03-22  Marek Polacek  <polacek@redhat.com>

        PR c++/84854
        * semantics.c (finish_if_stmt_cond): Check if the type of the condition
        is boolean.

2018-03-21  Jason Merrill  <jason@redhat.com>

        PR c++/81311 - wrong C++17 overload resolution.
        * call.c (build_user_type_conversion_1): Remove C++17 code.
        (conv_binds_ref_to_prvalue): New.
        (build_over_call): Handle C++17 copy elision.
        (build_special_member_call): Only do C++17 copy elision here if the
        argument is already the right type.

2018-03-21  Alexandre Oliva <aoliva@redhat.com>

        PR c++/71965
        * init.c (build_vec_init): Silence error, former sorry,
        without tf_error.

        PR c++/84610
        PR c++/84642
        * parser.c (abort_fully_implicit_template_p): New.
        (cp_parser_skip_to_end_of_statement): Use it.
        (cp_parser_skip_to_end_of_block_or_statement): Likewise.
        (finish_fully_implicit_template_p): Clear
        implicit_template_parms and implicit_template_scope.

2018-03-21  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84972
        * decl.c (maybe_deduce_size_from_array_init): Set TREE_TYPE to
        error_mark_node when check_array_designated_initializer fails.

2018-03-21  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84961
        * cp-tree.h (genericize_compound_lvalue): Declare.
        * typeck.c (genericize_compound_lvalue): New function.
        (unary_complex_lvalue, cp_build_modify_expr): Use it.
        * semantics.c (finish_asm_stmt): Replace MODIFY_EXPR, PREINCREMENT_EXPR
        and PREDECREMENT_EXPR in output and "m" constrained input operands with
        COMPOUND_EXPR.  Call cxx_mark_addressable on the rightmost
        COMPOUND_EXPR operand.

2018-03-21  Nathan Sidwell  <nathan@acm.org>

        PR c++/85008
        * tree.c (decl_linkage): Use DECL_CLONED_FUNCTION_P.
        * decl2.c (vague_linkage_p): Likewise.

2018-03-21  David Malcolm  <dmalcolm@redhat.com>

        PR c++/84994
        * constexpr.c (constexpr_fn_retval): Make non-"static".
        * cp-tree.h (constexpr_fn_retval): New decl.
        * search.c (direct_accessor_p): Update leading comment.
        (reference_accessor_p): Likewise.
        (field_accessor_p): Replace check that function body is a
        RETURN_EXPR with a call to constexpr_fn_retval.  Fix
        indentation of "field_type" decl.

2018-03-21  Nathan Sidwell  <nathan@acm.org>

        PR c++/84804
        * name-lookup.c (do_pushtag): Permit lambdas to be pushed into
        complete classes.

2018-03-21  Martin Sebor  <msebor@redhat.com>

        PR c++/84850
        * call.c (first_non_public_field): New template and function.
        (first_non_trivial_field): New function.
        (maybe_warn_class_memaccess): Call them.

2018-03-21  David Malcolm  <dmalcolm@redhat.com>

        PR c++/84892
        * search.c (field_accessor_p): Use class_of_this_parm rather than
        type_of_this_parm, to check that "this" is a "const T *", rather
        than a "T *const".

2018-03-21  Nathan Sidwell  <nathan@acm.org>

        * class.c (finish_struct_anon_r): Refactor, deprecate anything
        other than public non-static data members.
        * parser.c (cp_parser_init_declarator): Deprecate attributes after
        parenthesized initializer.

        PR c++/84836
        * name-lookup.c (update_binding): Correct logic for local binding
        update.

2018-03-21  Marek Polacek  <polacek@redhat.com>

        PR c++/71638, ICE with NSDMI and reference.
        * constexpr.c (cxx_eval_bare_aggregate): Update constructor's flags
        even when we replace an element.

2018-03-20  Marek Polacek  <polacek@redhat.com>

        PR c++/84978, ICE with NRVO.
        * constexpr.c (cxx_eval_constant_expression): Handle the case when
        a RESULT_DECL isn't in the hash map.

2018-03-20  Jason Merrill  <jason@redhat.com>

        PR c++/84978, ICE with NRVO.
        * cvt.c (cp_get_fndecl_from_callee): Add fold parameter.
        (cp_get_callee_fndecl_nofold): New.
        * cp-gimplify.c (cp_genericize_r): Use it instead.
        * call.c (check_self_delegation): Likewise.

2018-03-20  Nathan Sidwell  <nathan@acm.org>

        PR c++/84962
        * name-lookup.c (pushdecl_class_level): Push anon-struct's
        member_vec, if there is one.

        PR c++/84970
        * cp-tree.h (lookup_list_keep): Declare.
        * tree.c (lookup_list_keep): New, broken out of ...
        (build_min): ... here.  Call it.
        * decl.c (cp_finish_decl): Call lookup_list_keep.

2018-03-19  Jason Merrill  <jason@redhat.com>

        PR c++/84937 - ICE with class deduction and auto.
        * pt.c (rewrite_template_parm): Fix auto handling.

2018-03-19  Marek Polacek  <polacek@redhat.com>

        PR c++/84925
        * pt.c (enclosing_instantiation_of): Check if fn is null.

        PR c++/84927
        * constexpr.c (cxx_eval_bare_aggregate): Update constructor's flags
        as we evaluate the elements.
        (cxx_eval_constant_expression): Verify constructor's flags
        unconditionally.

2018-03-19  Jason Merrill  <jason@redhat.com>

        PR c++/71834 - template-id with too few arguments.
        * pt.c (coerce_template_parms): Check fixed_parameter_pack_p.

2018-03-19  Nathan Sidwell  <nathan@acm.org>

        PR c++/84835
        * lambda.c (maybe_add_lambda_conv_op): Force C++ linkage.
        * pt.c (build_template_decl): Propagate language linkage.

        PR c++/84812
        * name-lookup.c (set_local_extern_decl_linkage): Defend against
        ambiguous lookups.

2018-03-16  Jakub Jelinek  <jakub@redhat.com>

        PR c/84910
        * parser.c (cp_parser_lambda_introducer): Remove trailing space from
        diagnostics.
        * method.c (synthesize_method): Likewise.
        * pt.c (convert_nontype_argument): Likewise.

2018-03-16  Jason Merrill  <jason@redhat.com>

        PR c++/84720 - ICE with rvalue ref non-type argument.
        * pt.c (invalid_nontype_parm_type_p): Prohibit rvalue reference.
        (convert_nontype_argument): Revert earlier change.

        PR c++/80227 - SFINAE and negative array size.
        * decl.c (compute_array_index_type): Use
        build_converted_constant_expr and valid_constant_size_p.

        PR c++/84906 - silent wrong code with ambiguous conversion.
        * call.c (build_user_type_conversion_1): Set need_temporary_p on
        ambiguous conversion.
        (convert_like_real): Check it.

        PR c++/83937 - wrong C++17 handling of init-list ctor argument.
        * call.c (build_special_member_call): Don't convert an init-list
        argument directly to the class type.

2018-03-16  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79937
        PR c++/82410
        * cp-tree.h (CONSTRUCTOR_PLACEHOLDER_BOUNDARY): Define.
        (find_placeholder): Declare.
        * tree.c (struct replace_placeholders_t): Add exp member.
        (replace_placeholders_r): Don't walk into ctors with
        CONSTRUCTOR_PLACEHOLDER_BOUNDARY flag set, unless they are equal to
        d->exp.  Replace PLACEHOLDER_EXPR with unshare_expr (x) rather than x.
        (replace_placeholders): Initialize data.exp.
        (find_placeholders_r, find_placeholders): New functions.
        * typeck2.c (process_init_constructor_record,
        process_init_constructor_union): Set CONSTRUCTOR_PLACEHOLDER_BOUNDARY
        if adding NSDMI on which find_placeholder returns true.
        * call.c (build_over_call): Don't call replace_placeholders here.
        * cp-gimplify.c (cp_genericize_r): Set TARGET_EXPR_NO_ELIDE on
        TARGET_EXPRs with CONSTRUCTOR_PLACEHOLDER_BOUNDARY set on
        TARGET_EXPR_INITIAL.
        (cp_fold): Copy over CONSTRUCTOR_PLACEHOLDER_BOUNDARY bit to new
        ctor.

2018-03-16  Jason Merrill  <jason@redhat.com>

        PR c++/83911 - ICE with multiversioned constructor.
        * cp-gimplify.c (cp_genericize_r): Replace versioned function with
        dispatchere here.
        * call.c (build_over_call): Not here.

2018-03-16  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84874
        * decl.c (reshape_init_class): Don't assert d->cur->index == field
        if d->cur->index is a FIELD_DECL, instead set field to d->cur->index.

2018-03-15  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84222
        * cp-tree.h (cp_warn_deprecated_use): Declare.
        * tree.c (cp_warn_deprecated_use): New function.
        * typeck2.c (build_functional_cast): Use it.
        * decl.c (grokparms): Likewise.
        (grokdeclarator): Likewise.  Temporarily push nested class scope
        around grokparms call for out of class member definitions.

2018-03-14  Jason Merrill  <jason@redhat.com>

        PR c++/84820 - no error for invalid qualified-id.
        * parser.c (cp_parser_make_indirect_declarator): Don't wrap
        cp_error_declarator.

        PR c++/84801 - ICE with unexpanded pack in lambda.
        * pt.c (check_for_bare_parameter_packs): Don't return early for a
        lambda in non-template context.

        PR c++/81236 - auto variable and auto function
        * pt.c (tsubst_baselink): Update the type of the BASELINK after
        mark_used.

2018-03-14  Jason Merrill  <jason@redhat.com>

        PR c++/83916 - ICE with template template parameters.
        * pt.c (convert_template_argument): Don't substitute into type of
        non-type parameter if we don't have enough arg levels.
        (unify): Likewise.

2018-03-14  Marek Polacek  <polacek@redhat.com>

        PR c++/84596
        * semantics.c (finish_static_assert): Check
        instantiation_dependent_expression_p instead of
        {type,value}_dependent_expression_p.

2018-03-13  Paolo Carlini  <paolo.carlini@oracle.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/82336 - link error with list-init default argument.
        * decl.c (check_default_argument): Unshare an initializer list.

2018-03-13  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84843
        * decl.c (duplicate_decls): For redefinition of built-in, use error
        and return error_mark_node.  For redeclaration, return error_mark_node
        rather than olddecl if !flag_permissive.

2018-03-13  Jason Merrill  <jason@redhat.com>

        PR c++/82565 - ICE with concepts and generic lambda.
        * pt.c (instantiate_decl): Clear fn_context for lambdas.

2018-03-13  Jason Merrill  <jason@redhat.com>

        PR c++/84720 - ICE with rvalue ref non-type argument.
        * pt.c (convert_nontype_argument): Handle rvalue references.

        PR c++/84839 - ICE with decltype of parameter pack.
        * pt.c (tsubst_pack_expansion): Set cp_unevaluated_operand while
        instantiating dummy parms.

        * parser.c (cp_parser_simple_type_specifier): Pedwarn about auto
        parameter even without -Wpedantic.

        PR c++/84798 - ICE with auto in abstract function declarator.
        * parser.c (cp_parser_parameter_declaration_clause): Check
        parser->default_arg_ok_p.

2018-03-13  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84808
        * constexpr.c (find_array_ctor_elt): Don't use elt reference after
        first potential CONSTRUCTOR_ELTS reallocation.  Convert dindex to
        sizetype.  Formatting fixes.

2018-03-12  Jason Merrill  <jason@redhat.com>

        PR c++/84355 - ICE with deduction for member class template.
        * pt.c (tsubst) [TEMPLATE_TYPE_PARM]: Always substitute into
        CLASS_PLACEHOLDER_TEMPLATE.

        PR c++/84802 - ICE capturing uninstantiated class.
        * lambda.c (build_capture_proxy): Call complete_type.

2018-03-09  Jason Merrill  <jason@redhat.com>

        PR c++/84770 - ICE with typedef and parameter pack.
        * pt.c (verify_unstripped_args_1): Split out from
        verify_unstripped_args.

        PR c++/84785 - ICE with alias template and default targs.
        * pt.c (type_unification_real): Set processing_template_decl if
        saw_undeduced == 1.

        PR c++/84752 - ICE with capture of constexpr array.
        * call.c (standard_conversion): Set rvaluedness_matches_p on the
        identity conversion under ck_lvalue.

2018-03-09  Jason Merrill  <jason@redhat.com>
            Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/71169
        PR c++/71832
        * pt.c (any_erroneous_template_args_p): New.
        * cp-tree.h (any_erroneous_template_args_p): Declare it.
        * parser.c (cp_parser_class_specifier_1): Use it.

2018-03-09  Jason Merrill  <jason@redhat.com>

        PR c++/84726 - unnecessary capture of constant vars.
        * cp-tree.h (LAMBDA_CAPTURE_EXPLICIT_P)
        (LAMBDA_EXPR_CAPTURE_OPTIMIZED): New.
        * expr.c (mark_use): Set LAMBDA_EXPR_CAPTURE_OPTIMIZED.
        * lambda.c (is_constant_capture_proxy)
        (current_lambda_expr, var_to_maybe_prune, mark_const_cap_r)
        (prune_lambda_captures): New.
        (finish_lambda_function): Call prune_lambda_captures.

2018-03-09  Jason Merrill  <jason@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR c++/84076
        * call.c (convert_arg_to_ellipsis): Instead of cp_build_addr_expr
        build ADDR_EXPR with REFERENCE_TYPE.
        (build_over_call): For purposes of check_function_arguments, if
        argarray[j] is ADDR_EXPR with REFERENCE_TYPE created above, use
        its operand rather than the argument itself.

2018-03-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84724
        * decl.c (duplicate_decls): Don't override __* prefixed builtins
        except for __[^b]*_chk, instead issue permerror and for -fpermissive
        also a note and return olddecl.

2018-03-09  Nathan Sidwell  <nathan@acm.org>

        PR c++/84733
        * name-lookup.c (do_pushdecl_with_scope): Only clear
        current_function_decl when pushing a non-class (i.e. namespace)
        scope.

2018-03-08  Jason Merrill  <jason@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR c++/80598
        * call.c (build_over_call): In templates set TREE_USED (first_fn) when
        not calling mark_used for the benefit of -Wunused-function warning.

2018-03-06  Jason Merrill  <jason@redhat.com>

        * lambda.c (is_capture_proxy_with_ref): Remove.
        * constexpr.c, expr.c, cp-tree.h, semantics.c: Adjust.

2018-03-06  Marek Polacek  <polacek@redhat.com>

        PR c++/84684
        * constexpr.c (cxx_bind_parameters_in_call): Unshare evaluated
        arguments.

2018-03-06  Alexandre Oliva <aoliva@redhat.com>

        PR c++/84231
        * tree.c (lvalue_kind): Use presence/absence of REFERENCE_TYPE
        only while processing template decls.
        * typeck.c (build_x_conditional_expr): Move wrapping of
        reference type around type...
        * call.c (build_conditional_expr_1): ... here.  Rename
        is_lvalue to is_glvalue.
        * parser.c (cp_parser_fold_expression): Catch REFERENCE_REF_P
        INDIRECT_REF of COND_EXPR too.

        PR c++/84593
        * init.c (build_zero_init_1): Zero-initialize references.

        PR c++/84492
        * semantics.c (finish_stmt_expr_expr): Reject unresolved
        overloads used as stmt expr values.

2018-03-05  Jason Merrill  <jason@redhat.com>

        PR c++/84708 - ICE with lambda in local class NSDMI.
        * lambda.c (lambda_expr_this_capture): Handle local class NSDMI
        context.

2018-03-05  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84684
        * constexpr.c (constexpr_call_hasher::equal): Return false if
        lhs->hash != rhs->hash.  Change return 1 to return true and
        return 0 to return false.

2018-03-05  Nathan Sidwell  <nathan@acm.org>

        PR c++/84702
        * pt.c (process_template_arg): Mark lookup_keep on a default arg.

2018-03-05  Marek Polacek  <polacek@redhat.com>

        PR c++/84707
        * decl.c (duplicate_decls): Check DECL_NAME before accessing
        UDLIT_OPER_P.

2018-03-05  Nathan Sidwell  <nathan@acm.org>

        PR c++/84694
        * friend.c (do_friend): Restore check for identifier_p inside
        TEMPLATE_ID_EXPR.

2018-03-05  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84618
        * parser.c (cp_parser_lambda_introducer): Reject any capture not
        involving a VAR_DECL or a PARM_DECL.

2018-03-05  Pádraig Brady  <P@draigBrady.com>
            Jason  Merrill  <jason@redhat.com>
            Nathan Sidwell  <nathan@acm.org>

        PR c++/84497
        * decl2.c (get_tls_init_fn): Check TYPE_HAS_TRIVIAL_DFLT too.

2018-03-03  Jason Merrill  <jason@redhat.com>

        PR c++/84686 - missing volatile loads.
        * cvt.c (convert_to_void): Call maybe_undo_parenthesized_ref.

2018-03-03  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/71464
        * optimize.c (maybe_thunk_body): Bail out immediately if either
        fns[0] or fns[1] is null.

2018-03-02  Marek Polacek  <polacek@redhat.com>

        PR c++/84578
        * constexpr.c (get_array_or_vector_nelts): New.
        (cxx_eval_array_reference): Use it.
        (cxx_eval_vec_init_1): Likewise.
        (cxx_eval_store_expression): Likewise.

2018-03-02  Jason Merrill  <jason@redhat.com>

        * semantics.c (force_paren_expr): Remove redundant test.

2018-03-02  Marek Polacek  <polacek@redhat.com>

        PR c++/84663
        * decl.c (cp_complete_array_type): Check error_mark_node.

        PR c++/84664
        * typeck.c (cp_perform_integral_promotions): Check the result of
        mark_rvalue_use.

2018-03-02  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84662
        * pt.c (tsubst_copy_and_build) <case TEMPLATE_ID_EXPR>: Use
        RETURN instead of return.
        <case POINTER_PLUS_EXPR>: Likewise.
        <case CONVERT_EXPR>: If op0 is error_mark_node, just return
        it instead of wrapping it into CONVERT_EXPR.

2018-03-02  Jason Merrill  <jason@redhat.com>

        Fix MIPS16 ICE.
        * pt.c (type_dependent_expression_p): Check DECL_LANG_SPECIFIC.

2018-03-02  Marek Polacek  <polacek@redhat.com>

        PR c++/84590
        * cp-gimplify.c (cp_fully_fold): Unwrap TARGET_EXPR or a CONSTRUCTOR
        wrapped in VIEW_CONVERT_EXPR.

2018-03-01  Martin Sebor  <msebor@redhat.com>

        PR c++/84294
        * decl.c (check_redeclaration_no_default_args): Merge attributes
        specified on redeclarations of the same function template.
        Remove dead code.

2018-03-01  Marek Polacek  <polacek@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/84582
        * semantics.c (force_paren_expr): Create a PAREN_EXPR when in
        a template.
        (maybe_undo_parenthesized_ref): Unwrap PAREN_EXPR.
        * typeck2.c (store_init_value): Call fold_non_dependent_expr instead
        of instantiate_non_dependent_expr.
        * tree.c (lvalue_kind): Handle PAREN_EXPR like NON_DEPENDENT_EXPR.

2018-03-01  Nathan Sidwell  <nathan@acm.org>

        PR c++/84434
        * name-lookup.c (member_vec_dedup): Remove manually peeled
        iteration.  Ignore dependent ctor inheritance.

2018-03-01  Jason Merrill  <jason@redhat.com>

        PR c++/71569 - decltype of template.
        * parser.c (cp_parser_decltype_expr): Handle missing template args.

2018-03-01  Marek Polacek  <polacek@redhat.com>

        PR c++/84596
        * constexpr.c (require_rvalue_constant_expression): New function.
        * cp-tree.h: Declare it.
        * semantics.c (finish_static_assert): Use it instead of
        require_potential_rvalue_constant_expression.

2018-03-01  Jason Merrill  <jason@redhat.com>
            Alexandre Oliva <aoliva@redhat.com>

        PR c++/71569 - ICE with redundant args on member variable template.
        * decl.c (start_decl): Handle partial specialization of member
        variable template.
        * pt.c (determine_specialization): Allow partial specialization
        of member variable template without specializing enclosing class.
        (process_partial_specialization): Improve error message.

2018-02-28  Jason Merrill  <jason@redhat.com>

        PR c++/71784 - ICE with ref-qualifier and explicit specialization.
        * pt.c (determine_specialization): Check ref-qualifier.

2018-02-28  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84609
        * parser.c (cp_parser_attributes_opt): Formatting fix.
        (cp_parser_skip_balanced_tokens, cp_parser_skip_gnu_attributes_opt,
        cp_parser_skip_std_attribute_spec_seq, cp_parser_skip_attributes_opt):
        New functions.
        (cp_parser_member_declaration): Use cp_parser_skip_attributes_opt
        instead of tentative parse to peek over optional attribute tokens
        to check for CPP_COLON after them.

        PR c++/83871
        PR c++/83503
        * pt.c (INCLUDE_STRING): Remove define.
        (warn_spec_missing_attributes): Use pretty_printer instead of
        std::string.  Fix up inform call so that the list of attributes
        is in %s argument.

2018-02-28  Martin Sebor  <msebor@redhat.com>

        PR testsuite/84617
        * decl.c (duplicate_decls): Fully merge attributes const, pure,
        and malloc.

2018-02-28  Nathan Sidwell  <nathan@acm.org>

        PR c++/84602
        * name-lookup.h (search_anon_aggr): Add defaulted WANT_TYPE arg.
        * name-lookup.c (fields_linear_search): Look in an anon-aggr
        regardless of want_type.
        (search_anon_aggr): Just use get_class_binding_direct.

2018-02-28  Jakub Jelinek  <jakub@redhat.com>

        * decl.c (cp_finish_decomp): Don't adjust eltscnt when calling
        inform_n.

2018-02-27  Martin Sebor  <msebor@redhat.com>

        * pt.c: Avoid including <string> directly.

2018-02-27  Martin Sebor  <msebor@redhat.com>

        PR c++/83871
        PR c++/83503
        * cp-tree.h (warn_spec_missing_attributes): New function.
        ((check_explicit_specialization): Add an argument.  Call the above
        function.
        * decl.c (duplicate_decls): Avoid applying primary function template's
        attributes to its explicit specializations.
        cp/pt.c (warn_spec_missing_attributes): Define.

2018-02-27  Håkon Sandsmark  <hsandsmark@gmail.com>

        PR c++/71546 - lambda init-capture with qualified-id.
        * parser.c (cp_parser_lambda_introducer): Clear scope after
        each lambda capture.

2018-02-27  Nathan Sidwell  <nathan@acm.org>

        PR c++/84426
        * name-lookup.h (get_member_slot): Rename ...
        (find_member_slot): ... here.
        (add_member_slot): New.
        * name-lookup.c (member_vec_linear_search): No need to check for
        NULL slot.
        (get_member_slot): Rename ...
        (find_member_slot): ... here.  Don't add slot for incomplete class.
        (add_member_slot): New.
        * class.c (add_method): Adjust get_member_slot rename.  Bail out
        if push_class_level_binding fails.  Create slot and grok
        properties once we're committed to insertion.

2018-02-27  Jason Merrill  <jason@redhat.com>

        PR c++/84489 - dependent default template argument
        * pt.c (type_unification_real): Handle early substitution failure.

2018-02-26  Jason Merrill  <jason@redhat.com>

        PR c++/84560 - ICE capturing multi-dimensional VLA.
        * tree.c (array_of_runtime_bound_p): False if the element is
        variably-modified.

        PR c++/84441 - ICE with base initialized from ?:
        * call.c (unsafe_copy_elision_p): Handle COND_EXPR.

        PR c++/84520 - ICE with generic lambda in NSDMI.
        * lambda.c (lambda_expr_this_capture): Don't look for fake NSDMI
        'this' in a generic lambda instantiation.

        PR c++/84559 - ICE with constexpr VLA.
        * constexpr.c (ensure_literal_type_for_constexpr_object): Check
        for constexpr variable with VLA type.

2018-02-26  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84558
        * constexpr.c (cxx_eval_vec_init_1): For reuse, treat NULL eltinit like
        a valid constant initializer.  Formatting fixes.

2018-02-26  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84540
        * pt.c (tsubst_attributes): Handle correctly tsubst_attribute
        returning NULL_TREE.
        (apply_late_template_attributes): Likewise.

2018-02-26  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84557
        * parser.c (cp_parser_omp_var_list_no_open): Only call
        cp_parser_lookup_name_simple on names satisfying identifier_p.
        (cp_parser_oacc_routine): Likewise.

2018-02-26  Jason Merrill  <jason@redhat.com>

        PR c++/84551 - ICE with concepts and -g.
        * parser.c (add_debug_begin_stmt): Do nothing in a concept.

2018-02-26  Marek Polacek  <polacek@redhat.com>

        PR c++/84325
        * tree.c (replace_placeholders_r): Only check TREE_CONSTANT on
        non-types.

2018-02-26  Jason Merrill  <jason@redhat.com>

        PR c++/84447 - ICE with deleted inherited ctor with default arg.
        * call.c (build_over_call): Handle deleted functions in one place.

2018-02-26  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84533
        * decl.c (redeclaration_error_message): Don't try to use
        DECL_DECLARED_CONSTEXPR_P on CONST_DECLs.

2018-02-26  Paolo Carlini  <paolo.carlini@oracle.com>

        * lambda.c (build_capture_proxy): Define static.
        * cp-tree.h (build_capture_proxy): Remove.

2018-02-26  Marek Polacek  <polacek@redhat.com>

        PR c++/84537
        * name-lookup.c (suggest_alternative_in_explicit_scope): Return false
        if name is error node.

2018-02-25  Jason Merrill  <jason@redhat.com>

        PR c++/84015 - ICE with class deduction and auto template parm.
        * pt.c (rewrite_template_parm): Use tf_partial in first tsubst.

2018-02-24  Marek Polacek  <polacek@redhat.com>

        PR c++/83692
        * constexpr.c (maybe_constant_init_1): New function.
        (maybe_constant_init): Make it a wrapper around maybe_constant_init_1.
        (cxx_constant_init): New function.
        * cp-tree.h (cxx_constant_init): Declare.
        * typeck2.c (store_init_value): Call cxx_constant_init instead of
        cxx_constant_value.  Move the maybe_constant_init call under an 'else'.

2018-02-22  Jason Merrill  <jason@redhat.com>

        PR c++/70468 - ICE with constructor delegation via typedef.
        * pt.c (tsubst_initializer_list): Check for other mem-initializers
        with constructor delegation.

2018-02-22  Jason Merrill  <jason@redhat.com>

        PR c++/84424 - ICE with constexpr and __builtin_shuffle.
        * constexpr.c (reduced_constant_expression_p): Handle CONSTRUCTOR of
        VECTOR_TYPE.

2018-02-22  Marek Polacek  <polacek@redhat.com>

        PR c++/84493
        * parser.c (cp_parser_braced_list): Use require_open instead of
        consume_open.

2018-02-21  Jason Merrill  <jason@redhat.com>

        PR c++/84454 - ICE with pack expansion in signature.
        * error.c (find_typenames_r): Also stop on EXPR_PACK_EXPANSION.

2018-02-20  Siddhesh Poyarekar  <siddhesh@sourceware.org>

        * cp-objcp-common.c (cxx_block_may_fallthru): Add case for
        IF_STMT.

2018-02-20  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84446
        * parser.c (cp_parser_init_declarator): Don't call start_lambda_scope
        on error_mark_node.

2018-02-20  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84445
        * class.c (fixed_type_or_null) <case CALL_EXPR>: Only test
        TREE_HAS_CONSTRUCTOR if instance is not an internal function call.

        PR c++/84449
        * tree.c (bot_manip): If build_cplus_new or break_out_target_exprs
        returns error_mark_node, return it immediately.
        (break_out_target_exprs): If cp_walk_tree with bot_manip returns
        error_mark_node, return error_mark_node.

        PR c++/84455
        * pt.c (tsubst_lambda_expr): If not nested, increment temporarily
        function_depth to avoid GC during finish_lambda_function.

2018-02-19  Jason Merrill  <jason@redhat.com>

        PR c++/84429 - ICE capturing VLA.
        * lambda.c (build_capture_proxy): Handle reference refs.

2018-02-19  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84448
        * parser.c (cp_parser_binary_expression): For no_toplevel_fold_p, if
        either operand is error_mark_node, set current.lhs to that instead of
        creating a binary op with error_mark_node operands.

        PR c++/84430
        * constexpr.c (potential_constant_expression_1): Handle OMP_SIMD.

2018-02-19  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84348
        * decl.c (grokdeclarator): Early return error_mark_node upon
        ill-formed friend declaration.

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

        PR c++/84192
        * constexpr.c (cxx_eval_constant_expression) <case RETURN_EXPR>: Don't
        set *jump_target to anything if jump_target is NULL.

2018-02-16  Jason Merrill  <jason@redhat.com>

        PR c++/84151 - unnecessary volatile load with static member.
        * call.c (build_new_method_call_1): Avoid loading from a volatile
        lvalue used as the object argument for a static member function.

        PR c++/81853 - using-directive and constexpr.
        * constexpr.c (cxx_eval_constant_expression): Handle USING_STMT.

        PR c++/84420 - ICE with structured binding in lambda.
        * lambda.c (is_capture_proxy): Check DECL_DECOMPOSITION_P.

        PR c++/83835 - C++17 error with constructor ctors.
        * call.c (build_special_member_call): Set TARGET_EXPR_DIRECT_INIT_P.

        PR c++/82664 - ICE with reference to function template parm.
        * pt.c (convert_nontype_argument_function): Avoid obfuscationg
        NOP_EXPRs.

        PR c++/82764 - C++17 ICE with empty base
        * class.c (build_base_field_1): Set DECL_SIZE to zero for empty base.

2018-02-16  Jason Merrill  <jason@redhat.com>

        PR c++/84421 - type-dependent if constexpr
        * semantics.c (finish_if_stmt_cond): Check type_dependent_expression_p.

2018-02-16  Nathan Sidwell  <nathan@acm.org>

        Deprecate -ffriend-injection.
        * decl.c (cxx_init_decl_processing): Emit warning on option.
        * name-lookup.c (do_pushdecl): Emit warning if we push a visible
        friend.

2018-02-16  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/82468
        * decl.c (check_special_function_return_type): Reject template
        template parameter in deduction guide.

2018-02-16  Nathan Sidwell  <nathan@acm.org>

        PR c++/84375
        * name-lookup.c (do_pushdecl): Bail out on bad local friend injection.

2018-02-15  Jason Merrill  <jason@redhat.com>

        PR c++/83227 - C++17 ICE with init-list derived-to-base conversion.
        * call.c (convert_like_real): Don't use the copy-list-initialization
        shortcut for ck_base.

        PR c++/84045 - ICE with typedef and noexcept.
        * except.c (build_noexcept_spec): Use strip_typedefs_expr.

        PR c++/84376 - ICE with omitted template arguments.
        * pt.c (dguide_name_p): Check for IDENTIFIER_NODE.

        PR c++/84368 - wrong error with local variable in variadic lambda.
        * pt.c (tsubst_pack_expansion): Fix handling of non-packs in
        local_specializations.

2018-02-15  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84330
        * constraint.cc (tsubst_constraint_info): Handle an error_mark_node
        as first argument.

2018-02-14  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84350
        * pt.c (do_auto_deduction): Don't check the TREE_TYPE of a null
        init, early return.

2018-02-14  Nathan Sidwell  <nathan@acm.org>

        * decl2.c (mark_vtable_entries): Set input_location to decl's.
        (c_parse_final_cleanups): Restore input_location after emitting
        vtables.

2018-02-14  Paolo Carlini  <paolo.carlini@oracle.com>

        * cp-tree.h (do_auto_deduction (tree, tree, tree)): Remove.
        (do_auto_deduction (tree, tree, tree, tsubst_flags_t,
        auto_deduction_context, tree, int): Add defaults.
        * pt.c (do_auto_deduction (tree, tree, tree)): Remove definition.
        (tsubst_omp_for_iterator): Adjust do_auto_deduction call, forward
        tsubst_flags_t argument.
        * init.c (build_new): Likewise.

2018-02-13  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84364
        * typeck.c (check_return_expr): Don't emit -Weffc++ warning
        about return other than *this in assignment operators if
        retval is type dependent expression.

2018-02-13  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84333
        * call.c (build_conditional_expr_1): Use cp_save_expr instead of
        save_expr for the G++ extension.

2018-02-13  Jason Merrill  <jason@redhat.com>

        PR c++/84080 - ICE with return type deduction and specialization.
        * pt.c (determine_specialization): Check uses_template_parms.

        Fix more variadic capture issues.
        * pt.c (find_parameter_packs_r): Also look at explicit captures.
        (check_for_bare_parameter_packs): Check current_class_type for
        lambda context.
        (extract_locals_r): Handle seeing a full instantiation of a pack.
        (tsubst_pack_expansion): Likewise.  Force lambda capture.
        * parser.c (cp_parser_lambda_introducer): Don't
        check_for_bare_parameter_packs.

        PR c++/84338 - wrong variadic sizeof.
        * pt.c (argument_pack_select_arg): Like the macro, but look through
        a pack expansion.
        (tsubst, tsubst_copy, dependent_template_arg_p): Use it.
        (extract_fnparm_pack): Do make_pack_expansion.
        (extract_locals_r): Do strip a pack expansion.
        * cp-tree.h (ARGUMENT_PACK_SELECT_ARG): Remove.

2018-02-12  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84341
        * parser.c (cp_parser_binary_expression): Use build_min instead of
        build2_loc to build the no_toplevel_fold_p toplevel binary expression.

2018-02-12  Nathan Sidwell  <nathan@acm.org>

        PR c++/84263
        * parser.c (cp_parser_decltype): Push and pop
        deferring_access_checks.  Reorganize to avoid goto.

2018-02-12  Richard Biener  <rguenther@suse.de>

        PR c++/84281
        * constexpr.c (cxx_eval_vec_init_1): Use a RANGE_EXPR to compact
        uniform constructors and delay allocating them fully.

2018-02-09  Jason Merrill  <jason@redhat.com>

        PR c++/84036 - ICE with variadic capture.
        Handle variadic capture proxies more like non-variadic.
        * lambda.c (build_capture_proxy): Remove workaround.
        * pt.c (find_parameter_packs_r): The proxy is a pack.
        (instantiate_class_template_1): Remove dead lambda code.
        (extract_fnparm_pack): Don't make_pack_expansion.
        (extract_locals_r): Don't strip a pack expansion.
        (tsubst_pack_expansion): Handle proxy packs.  Use
        PACK_EXPANSION_EXTRA_ARGS less.
        (tsubst_decl) [FIELD_DECL]: Don't register_specialization.
        (tsubst_copy) [FIELD_DECL]: Don't retrieve*_specialization.
        [VAR_DECL]: Handle ARGUMENT_PACK_SELECT.
        (tsubst_expr) [DECL_EXPR]: Handle proxy packs.
        (tsubst_copy_and_build) [VAR_DECL]: Handle proxy packs normally.

2018-02-10  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/83987
        * tree.c (cp_free_lang_data): Revert 2018-01-23 change.

2018-02-09  Jason Merrill  <jason@redhat.com>

        PR c++/81917 - ICE with void_t and partial specialization.
        * pt.c (instantiate_class_template_1): Set TYPE_BEING_DEFINED before
        calling most_specialized_partial_spec.

2018-02-09  Nathan Sidwell  <nathan@acm.org>

        PR c/84293
        * typeck.c (cp_build_indirect_ref_1, build_reinterpret_cast_1):
        Pass expr location to strict_aliasing_warning.

2018-02-09  Jason Merrill  <jason@redhat.com>

        PR c++/84296 - ICE with qualified-id in template.
        PR c++/83714
        * pt.c (unknown_base_ref_p): New.
        (instantiation_dependent_scope_ref_p): Use it instead of
        any_dependent_bases_p.

2018-02-09  Marek Polacek  <polacek@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR c++/83659
        * constexpr.c (cxx_fold_indirect_ref): Sync some changes from
        fold_indirect_ref_1, including poly_*int64.  Verify first that
        tree_fits_poly_int64_p (op01).  Formatting fixes.

2018-02-08  Paolo Carlini  <paolo.carlini@oracle.com>

        * constexpr.c (cxx_eval_component_reference): Use INDIRECT_REF_P.
        * lambda.c (build_capture_proxy): Likewise.
        * search.c (field_access_p): Likewise.
        * semantics.c (omp_clause_decl, omp_privatize_field,
        finish_omp_clauses): Likewise.

2018-02-08  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/83806
        * typeck.c (decay_conversion): Use mark_rvalue_use for the special
        case of nullptr too.

2018-02-08  Nathan Sidwell  <nathan@acm.org>

        * class.c (finish_struct): Fix std:initializer_list diagnostic
        formatting.

2018-02-08  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/83204
        * pt.c (tsubst_copy_and_build): Use force_paren_expr for INDIRECT_REF.

2018-02-07  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84082
        * parser.c (cp_parser_dot_deref_incomplete): New function.
        (cp_parser_postfix_dot_deref_expression): Use it.

2018-02-07  David Malcolm  <dmalcolm@redhat.com>

        PR c++/81610
        PR c++/80567
        * name-lookup.c (suggest_rid_p): New function.
        (lookup_name_fuzzy): Replace enum-rid-filtering logic with call to
        suggest_rid_p.

2018-02-07  Jason Merrill  <jason@redhat.com>

        PR c++/84182 - ICE with captured lambda
        PR c++/84181
        * pt.c (extract_locals_r, extract_local_specs): New.
        (tsubst_pack_expansion): Use them.

2018-02-07  Martin Liska  <mliska@suse.cz>

        PR c++/84059.
        * class.c (add_method): Append argument value.
        * cp-tree.h (maybe_version_functions): Add new argument.
        * decl.c (decls_match): Call it if a declaration does not
        have DECL_FUNCTION_VERSIONED.
        (maybe_version_functions): record argument is added.

2018-02-05  Marek Polacek  <polacek@redhat.com>

        * class.c: Remove unused global variables.
        (build_primary_vtable): Don't gather statistics.
        (print_class_statistics): Remove.
        * cp-tree.h (print_class_statistics): Remove.
        * tree.c (cxx_print_statistics): Don't call print_class_statistics.

2018-02-02  Paolo Carlini  <paolo.carlini@oracle.com>

        * class.c (is_really_empty_class): Use DECL_UNNAMED_BIT_FIELD.
        * constexpr.c (cx_check_missing_mem_inits): Likewise.
        * decl.c (next_initializable_field, find_decomp_class_base,
        cp_finish_decomp): Likewise.
        * typeck2.c (process_init_constructor_record): Likewise.

2018-02-02  Jason Merrill  <jason@redhat.com>

        PR c++/84181 - ICE with lambda parm in template argument.
        * tree.c (strip_typedefs_expr): Use cp_tree_operand_length.

2018-02-01  Jason Merrill  <jason@redhat.com>

        PR c++/84160 - ICE with nested variadic capture.
        * lambda.c (is_capture_proxy_with_ref): New.
        (insert_capture_proxy): Don't set DECL_CAPTURED_VARIABLE from a
        COMPONENT_REF.
        * expr.c (mark_use): Use is_capture_proxy_with_ref.
        * constexpr.c (potential_constant_expression_1): Likewise.
        * semantics.c (process_outer_var_ref): Likewise.

2018-02-01  Marek Polacek  <polacek@redhat.com>

        PR c++/84125
        * typeck.c (build_address): Relax the assert when
        processing_template_decl.

2018-02-01  Jason Merrill  <jason@redhat.com>

        PR c++/84126 - ICE with variadic generic lambda
        PR c++/84036
        PR c++/82249
        * pt.c (tsubst_pack_expansion): Handle function parameter_packs in
        PACK_EXPANSION_EXTRA_ARGS.

2018-02-01  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/83796
        * call.c (convert_like_real): If w're initializing from {} explicitly
        call abstract_virtuals_error_sfinae.

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

        PR c++/83993
        * constexpr.c (cxx_eval_outermost_constant_expr): Build NOP_EXPR
        around non-constant ADDR_EXPRs rather than clearing TREE_CONSTANT
        on ADDR_EXPR.

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

        PR c++/83993
        * constexpr.c (diag_array_subscript): Emit different diagnostics
        if TYPE_DOMAIN (arraytype) is NULL.
        (cxx_eval_array_reference, cxx_eval_store_expression): For arrays
        with NULL TYPE_DOMAIN use size_zero_node as nelts.

2018-01-31  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84092
        * semantics.c (finish_qualified_id_expr): When handling an
        UNBOUND_CLASS_TEMPLATE only adjust qualifying_class and expr.

2018-01-31  Marek Polacek  <polacek@redhat.com>

        PR c++/84138
        * cp-gimplify.c (cp_fold): Check if X is an error node before
        calling useless_type_conversion_p.

2018-01-30  Jason Merrill  <jason@redhat.com>

        PR c++/84091 - ICE with local class in lambda in template.
        * decl2.c (determine_visibility): Look for outer containing template
        instantiation.

        PR c++/84098 - ICE with lambda in template NSDMI.
        * pt.c (instantiate_class_template_1): Ignore more lambdas.

2018-01-29  Jason Merrill  <jason@redhat.com>

        PR c++/68810 - wrong location for reinterpret_cast error.
        * cvt.c (cp_convert_to_pointer): Always build a CONVERT_EXPR when
        !dofold.

2018-01-29  Marek Polacek  <polacek@redhat.com>

        PR c++/83996
        * constexpr.c (cxx_fold_indirect_ref): Compute ((foo *)&fooarray)[1]
        => fooarray[1] in offset_int.

2018-01-29  Jason Merrill  <jason@redhat.com>

        PR c++/83942 - wrong unused warning with static_cast.
        * cvt.c (ocp_convert): Call mark_rvalue_use.

2018-01-26  Jason Merrill  <jason@redhat.com>

        PR c++/83956 - wrong dtor error with anonymous union
        * method.c (walk_field_subobs): Variant members only affect
        deletedness.
        (maybe_explain_implicit_delete): Pass &deleted_p for diagnostic.

        PR c++/84036 - ICE with variadic capture.
        PR c++/82249
        * pt.c (tsubst_pack_expansion): When optimizing a simple
        substitution, pull a single pack expansion out of its pack.

        PR c++/82514 - ICE with local class in generic lambda.
        * pt.c (regenerated_lambda_fn_p): Remove.
        (enclosing_instantiation_of): Don't use it.
        (tsubst_function_decl): Call enclosing_instantiation_of.

        * pt.c (lookup_template_class_1): Add sanity check.
        * name-lookup.c (do_pushtag): Don't add closures to local_classes.

2018-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84031
        * decl.c (find_decomp_class_base): Ignore unnamed bitfields.  Ignore
        recursive calls that return ret.
        (cp_finish_decomp): Ignore unnamed bitfields.

2018-01-23  Jason Merrill  <jason@redhat.com>

        PR c++/82249 - wrong mismatched pack length error.
        * pt.c (extract_fnparm_pack, tsubst_pack_expansion): Handle
        unsubstituted function parameter pack.

2018-01-23  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/83921
        * decl.c (check_for_uninitialized_const_var): Not static; add
        bool and tsubst_flags_t parameters; adjust to be used both in
        constexpr context and not.
        * constexpr.c (potential_constant_expression_1): Use the above.
        * cp-tree.h (check_for_uninitialized_const_var): Declare.

2018-01-23  Jason Merrill  <jason@redhat.com>

        PR c++/83947 - ICE with auto declarations.
        * pt.c (do_auto_deduction): Don't deduce from an auto decl.
        * decl.c (undeduced_auto_decl): Limit to vars and fns.

2018-01-23  David Malcolm  <dmalcolm@redhat.com>

        PR c++/83974
        * pt.c (tsubst_copy_and_build) <CONSTRUCTOR>: Remove early bailout
        for pointer to member function types.

2018-01-23  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/83987
        * tree.c (cp_free_lang_data): Change DECL_VALUE_EXPR of
        DECL_OMP_PRIVATIZED_MEMBER vars to error_mark_node.

2018-01-23  Nathan Sidwell  <nathan@acm.org>

        PR c++/83988
        * pt.c (tsubst_baselink): Remove optype assert.
        * ptree.c (cxx_print_xnode): <case BASELINK> Print BASELINK_OPTYPE.

2018-01-23  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83958
        * decl.c (cp_finish_decomp): Diagnose if reference structure binding
        refers to incomplete type.

2018-01-23  Nathan Sidwell  <nathan@acm.org>

        Deprecate ARM-era for scope handling
        * decl.c (poplevel): Flag_new_for_scope is a boolean-like.
        (cxx_init_decl_processing): Deprecate flag_new_for_scope being
        cleared.
        * name-lookup.c (check_for_out_of_scope_variable): Deprecate and
        cleanup handling.
        * semantics.c (begin_for_scope): Flag_new_for_scope is
        boolean-like.
        (finish_for_stmt, begin_range_for_stmt): Likewise.

2018-01-22  Jason Merrill  <jason@redhat.com>

        PR c++/83720
        * decl2.c (determine_visibility): Fix template_decl handling
        instead of blocking it.

        PR c++/83720 - ICE with lambda and LTO.
        * decl2.c (determine_visibility): Clear template_decl for
        function-scope decls.  Propagate anonymous linkage from containing
        function.

2018-01-22  Marek Polacek  <polacek@redhat.com>

        PR c++/81933
        * typeck2.c (split_nonconstant_init_1): Return false if we didn't
        split out anything.

2018-01-22  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR c++/83895
        * decl.c (grokdeclarator): Don't diagnose extra parens
        on typedefs.

2018-01-19  Jakub Jelinek  <jakub@redhat.com>

        PR c++/81167
        * call.c (joust): Use TREE_TYPE (source) if source is
        a POINTER_TYPE_P rather than if ! DECL_CONSTRUCTOR_P (w->fn).

        PR c++/83919
        * typeck.c (convert_for_assignment): Suppress warn_ignored_qualifiers
        for direct enum init.
        * decl.c (reshape_init): Likewise.

2018-01-19  Marek Polacek  <polacek@redhat.com>

        * constexpr.c (fold_simple): Simplify.

2018-01-18  Jason Merrill  <jason@redhat.com>

        PR c++/83714
        * search.c (any_dependent_bases_p): Handle null TREE_BINFO.
        * pt.c (instantiation_dependent_scope_ref_p): True if
        any_dependent_bases_p.

2018-01-18  Paolo Carlini  <paolo.carlini@oracle.com>

        * cp-tree.h: Fix comment typo (DECL_NON_TRIVIALLY_INITIALIZED_P
        vs DECL_NONTRIVIALLY_INITIALIZED_P).

2018-01-18  Jason Merrill  <jason@redhat.com>

        PR c++/82461 - constexpr list-initialized member
        * constexpr.c (potential_constant_expression_1): Check
        TARGET_EXPR_DIRECT_INIT_P.

2018-01-18  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/81013
        * decl.c (xref_basetypes): Early return upon error about derived
        union.

2018-01-18  Nathan Sidwell  <nathan@acm.org>

        PR c++/83160
        * cp-tree.h (mark_use): Declare.
        * expr.c (mark_use): Make extern.
        * call.c (direct_reference_binding): Set inner conv's
        rvaluedness_matches_p, if it is an identity.
        (convert_like_real): Mark lvalue or rvalue use for identity as
        rvaledness_matches_p demands.

2018-01-18  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83824
        * parser.c (attr_chainon): New function.
        (cp_parser_label_for_labeled_statement, cp_parser_decl_specifier_seq,
        cp_parser_namespace_definition, cp_parser_init_declarator,
        cp_parser_type_specifier_seq, cp_parser_parameter_declaration,
        cp_parser_gnu_attributes_opt): Use it.
        (cp_parser_member_declaration, cp_parser_objc_class_ivars,
        cp_parser_objc_struct_declaration): Likewise.  Don't reset
        prefix_attributes if attributes is error_mark_node.

2018-01-17  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/78344
        * decl.c (grokdeclarator): Do not append the error_mark_node
        due to an erroneous optional attribute-specifier-seq.

2018-01-17  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83897
        * cp-gimplify.c (cp_maybe_instrument_return): Handle
        CLEANUP_POINT_EXPR.

2018-01-17  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/81054
        * constexpr.c (ensure_literal_type_for_constexpr_object): Return
        error_mark_node when we give an error.
        * decl.c (cp_finish_decl): Use the latter.

2018-01-17  Nathan Sidwell  <nathan@acm.org>

        PR c++/83287
        * init.c (build_raw_new_expr): Scan list for lookups to keep.

2018-01-17  David Malcolm  <dmalcolm@redhat.com>

        PR c++/83814
        * expr.c (fold_for_warn): Move from c-common.c, reducing to just
        the C++ part.  If processing a template, call
        fold_non_dependent_expr rather than fully folding.

2018-01-17  Jason Merrill  <jason@redhat.com>

        PR c++/81067 - redundant NULL warning.
        * call.c (convert_like_real): Restore null_node handling.

2018-01-17  Jason Merrill  <jason@redhat.com>

        PR c++/81843 - ICE with variadic member template.
        PR c++/72801
        * pt.c (unify_pack_expansion): Don't try to deduce enclosing
        template args.

2018-01-17  David Malcolm  <dmalcolm@redhat.com>

        PR c++/83799
        * pt.c (type_dependent_expression_p): Strip any location wrapper
        before testing tree codes.
        (selftest::test_type_dependent_expression_p): New function.
        (selftest::cp_pt_c_tests): Call it.

2018-01-17  Nathan Sidwell  <nathan@acm.org>

        PR c++/83739
        * pt.c (tsubst_expr) <case RANGE_FOR_STMT>: Rebuild a range_for if
        this not a final instantiation.

2018-01-16  Jason Merrill  <jason@redhat.com>

        PR c++/83714 - ICE checking return in template.
        * typeck.c (check_return_expr): Call build_non_dependent_expr.

2018-01-16  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83817
        * pt.c (tsubst_copy_and_build) <case CALL_EXPR>: If function
        is AGGR_INIT_EXPR rather than CALL_EXPR, set AGGR_INIT_FROM_THUNK_P
        instead of CALL_FROM_THUNK_P.

        PR c++/83825
        * name-lookup.c (member_vec_dedup): Return early if len is 0.
        (resort_type_member_vec, set_class_bindings,
        insert_late_enum_def_bindings): Use vec qsort method instead of
        calling qsort directly.

2018-01-15  Martin Sebor  <msebor@redhat.com>

        PR c++/83588
        * class.c (find_flexarrays): Make a record of multiple flexible array
        members.

2018-01-12  Jason Merrill  <jason@redhat.com>

        PR c++/83186 - ICE with static_cast of list-initialized temporary.
        * typeck.c (build_static_cast): Use build_non_dependent_expr.

2018-01-12  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (mark_rvalue_use): Add parm name.
        * expr.c (mark_lvalue_use, mark_lvalue_use_nonread): Move next to
        mark_rvalue_use.
        * call.c (convert_like_real): Fix formatting.

2018-01-11  Jason Merrill  <jason@redhat.com>

        PR c++/82728 - wrong -Wunused-but-set-variable
        PR c++/82799
        PR c++/83690
        * call.c (perform_implicit_conversion_flags): Call mark_rvalue_use.
        * decl.c (case_conversion): Likewise.
        * semantics.c (finish_static_assert): Call
        perform_implicit_conversion_flags.

2018-01-11  Nathan Sidwell  <nathan@acm.org>

        * method.c (enum mangling_flags): Delete long-dead enum.

2018-01-10  Paolo Carlini  <paolo.carlini@oracle.com>

        * parser.c (cp_parser_std_attribute_spec): When
        token_pair::require_open / require_close return false simply
        return error_mark_node, avoid duplicate cp_parser_error about
        expected '(' / ')', respectively.

2018-01-10  David Malcolm  <dmalcolm@redhat.com>

        PR c++/43486
        * call.c (null_ptr_cst_p): Strip location wrappers when
        converting from '0' to a pointer type in C++11 onwards.
        (conversion_null_warnings): Replace comparison with null_node with
        call to null_node_p.
        (build_over_call): Likewise.
        * cp-gimplify.c (cp_fold): Remove the early bailout when
        processing_template_decl.
        * cp-lang.c (selftest::run_cp_tests): Call
        selftest::cp_pt_c_tests and selftest::cp_tree_c_tests.
        * cp-tree.h (cp_expr::maybe_add_location_wrapper): New method.
        (selftest::run_cp_tests): Move decl to bottom of file.
        (null_node_p): New inline function.
        (selftest::cp_pt_c_tests): New decl.
        (selftest::cp_tree_c_tests): New decl.
        * cvt.c (build_expr_type_conversion): Replace comparison with
        null_node with call to null_node_p.
        * error.c (args_to_string): Likewise.
        * except.c (build_throw): Likewise.
        * mangle.c (write_expression): Skip location wrapper nodes.
        * parser.c (literal_integer_zerop): New function.
        (cp_parser_postfix_expression): Call maybe_add_location_wrapper on
        the result for RID_TYPEID. Pass true for new "wrap_locations_p"
        param of cp_parser_parenthesized_expression_list.  When calling
        warn_for_memset, replace integer_zerop calls with
        literal_integer_zerop, eliminating the double logical negation
        cast to bool.  Eliminate the special-casing for CONST_DECL in
        favor of the fold_for_warn within warn_for_memset.
        (cp_parser_parenthesized_expression_list): Add "wrap_locations_p"
        param, defaulting to false.  Convert "expr" to a cp_expr, and call
        maybe_add_location_wrapper on it when wrap_locations_p is true.
        (cp_parser_unary_expression): Call maybe_add_location_wrapper on
        the result for RID_ALIGNOF and RID_SIZEOF.
        (cp_parser_builtin_offsetof): Likewise.
        * pt.c: Include "selftest.h".
        (tsubst_copy): Handle location wrappers.
        (tsubst_copy_and_build): Likewise.
        (build_non_dependent_expr): Likewise.
        (selftest::test_build_non_dependent_expr): New function.
        (selftest::cp_pt_c_tests): New function.
        * tree.c: Include "selftest.h".
        (lvalue_kind): Handle VIEW_CONVERT_EXPR location wrapper nodes.
        (selftest::test_lvalue_kind): New function.
        (selftest::cp_tree_c_tests): New function.
        * typeck.c (string_conv_p): Strip any location wrapper from "exp".
        (cp_build_binary_op): Replace comparison with null_node with call
        to null_node_p.
        (build_address): Use location of operand when building address
        expression.

2018-01-10  Marek Polacek  <polacek@redhat.com>

        PR c++/82541
        * call.c (build_conditional_expr_1): Check complain before warning.
        * pt.c (tsubst_copy_and_build) <case COND_EXPR>: Suppress
        -Wduplicated-branches.

2018-01-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/81327
        * call.c (maybe_warn_class_memaccess): Add forward declaration.
        Change last argument from tree * to const vec<tree, va_gc> *, adjust
        args uses and check number of operands too.  Don't strip away any
        nops.  Use maybe_constant_value when looking for INTEGER_CST args.
        Deal with src argument not having pointer type.  Check
        tree_fits_uhwi_p before calling tree_to_uhwi.  Remove useless
        test.
        (build_over_call): Call maybe_warn_class_memaccess here on the
        original arguments.
        (build_cxx_call): Rather than here on converted arguments.

2018-01-10  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/81055
        * init.c (build_vec_init): Avoid building an INIT_EXPR with
        error_mark_node as second argument.

2018-01-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83734
        * constexpr.c (cxx_eval_statement_list): Ignore DEBUG_BEGIN_STMTs
        in STATEMENT_LIST.  Remove unneeded assert.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * constexpr.c (cxx_eval_array_reference): Handle polynomial
        VECTOR_CST_NELTS.
        (cxx_fold_indirect_ref): Handle polynomial TYPE_VECTOR_SUBPARTS.
        * call.c (build_conditional_expr_1): Likewise.
        * decl.c (cp_finish_decomp): Likewise.
        * mangle.c (write_type): Likewise.
        * typeck.c (structural_comptypes): Likewise.
        (cp_build_binary_op): Likewise.
        * typeck2.c (process_init_constructor_array): Likewise.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83555
        * typeck.c (build_static_cast_1): For static casts to reference types,
        call build_base_path with flag_delete_null_pointer_checks as nonnull
        instead of always false.  When -fsanitize=null, call
        ubsan_maybe_instrument_reference on the NULL reference INTEGER_CST.
        * cp-gimplify.c (cp_genericize_r): Don't walk subtrees of UBSAN_NULL
        call if the first argument is INTEGER_CST with REFERENCE_TYPE.

2018-01-03  Nathan Sidwell  <nathan@acm.org>

        PR c++/83667
        * method.c (make_alias_for): Copy DECL_CONTEXT.

2018-01-03  Marek Polacek  <polacek@redhat.com>

        PR c++/83592
        * decl.c (grokdeclarator): Don't warn about MVP in typename context.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

        PR preprocessor/83602
        * name-lookup.c (lookup_name_fuzzy): Don't use macro_use_before_def
        for builtin macros.

        PR c++/83634
        * cp-gimplify.c (cp_fold) <case NOP_EXPR>: If the operand folds to
        error_mark_node, return error_mark_node.

        Update copyright years.

2018-01-02  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83556
        * tree.c (replace_placeholders_r): Pass NULL as last argument to
        cp_walk_tree instead of d->pset.  If non-TREE_CONSTANT and
        non-PLACEHOLDER_EXPR tree has been seen already, set *walk_subtrees
        to false and return.
        (replace_placeholders): Pass NULL instead of &pset as last argument
        to cp_walk_tree.

2018-01-02  Nathan Sidwell  <nathan@acm.org>

        * constexpr.c (cxx_bind_parameters_in_call): Remove unneeded local
        lval var.
\f
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