PR c++/89660 - bogus error with -Wredundant-move.

[thirdparty/gcc.git] / gcc / cp / ChangeLog

2019-03-13  Marek Polacek  <polacek@redhat.com>

        PR c++/88979 - further P0634 fix for constructors.
        * parser.c (cp_parser_decl_specifier_seq): Pass flags to
        cp_parser_constructor_declarator_p.
        (cp_parser_direct_declarator): Allow missing typename for constructor
        parameters.
        (cp_parser_constructor_declarator_p): Add FLAGS parameter.  Pass it to
        cp_parser_type_specifier.

        PR c++/89686 - mixing init-capture and simple-capture in lambda.
        * parser.c (cp_parser_lambda_introducer): Give error when combining
        init-capture and simple-capture.

        PR c++/89660 - bogus error with -Wredundant-move.
        * typeck.c (maybe_warn_pessimizing_move): Only accept (T &) &arg
        as the std::move's argument.  Don't call convert_for_initialization
        when warn_redundant_move isn't on.

2019-03-11  Jason Merrill  <jason@redhat.com>

        PR c++/86521 - wrong overload resolution with ref-qualifiers.
        * call.c (build_user_type_conversion_1): Don't use a conversion to a
        reference of the wrong rvalueness for direct binding.

2019-03-11  Martin Liska  <mliska@suse.cz>

        * cvt.c (build_expr_type_conversion): Wrap apostrophes
        in gcc internal format with %'.
        * decl.c (check_no_redeclaration_friend_default_args): Likewise.
        (grokfndecl): Likewise.
        * name-lookup.c (do_pushtag): Likewise.
        * pt.c (unify_parameter_deduction_failure): Likewise.
        (unify_template_deduction_failure): Likewise.

2019-03-11  Martin Liska  <mliska@suse.cz>

        * call.c (convert_arg_to_ellipsis): Wrap an option name
        in a string format message and fix GNU coding style.
        (build_over_call): Likewise.
        * class.c (check_field_decl): Likewise.
        (layout_nonempty_base_or_field): Likewise.
        * constexpr.c (cxx_eval_loop_expr): Likewise.
        * cvt.c (type_promotes_to): Likewise.
        * decl.c (cxx_init_decl_processing): Likewise.
        (mark_inline_variable): Likewise.
        (grokdeclarator): Likewise.
        * decl2.c (record_mangling): Likewise.
        * error.c (maybe_warn_cpp0x): Likewise.
        * except.c (doing_eh): Likewise.
        * mangle.c (maybe_check_abi_tags): Likewise.
        * parser.c (cp_parser_diagnose_invalid_type_name): Likewise.
        (cp_parser_userdef_numeric_literal): Likewise.
        (cp_parser_primary_expression): Likewise.
        (cp_parser_unqualified_id): Likewise.
        (cp_parser_pseudo_destructor_name): Likewise.
        (cp_parser_builtin_offsetof): Likewise.
        (cp_parser_lambda_expression): Likewise.
        (cp_parser_lambda_introducer): Likewise.
        (cp_parser_lambda_declarator_opt): Likewise.
        (cp_parser_selection_statement): Likewise.
        (cp_parser_init_statement): Likewise.
        (cp_parser_decomposition_declaration): Likewise.
        (cp_parser_function_specifier_opt): Likewise.
        (cp_parser_static_assert): Likewise.
        (cp_parser_simple_type_specifier): Likewise.
        (cp_parser_namespace_definition): Likewise.
        (cp_parser_using_declaration): Likewise.
        (cp_parser_ctor_initializer_opt_and_function_body): Likewise.
        (cp_parser_initializer_list): Likewise.
        (cp_parser_type_parameter_key): Likewise.
        (cp_parser_member_declaration): Likewise.
        (cp_parser_try_block): Likewise.
        (cp_parser_std_attribute_spec): Likewise.
        (cp_parser_requires_clause_opt): Likewise.
        * pt.c (check_template_variable): Likewise.
        (check_default_tmpl_args): Likewise.
        (push_tinst_level_loc): Likewise.
        (instantiate_pending_templates): Likewise.
        (invalid_nontype_parm_type_p): Likewise.
        * repo.c (get_base_filename): Likewise.
        * rtti.c (typeid_ok_p): Likewise.
        (build_dynamic_cast_1): Likewise.
        * tree.c (maybe_warn_parm_abi): Likewise.

2019-03-08  Jakub Jelinek  <jakub@redhat.com>

        PR other/80058
        * parser.c (cp_parser_template_declaration_after_parameters): Avoid
        one space before " at the end of line and another after " on another
        line in a string literal.

        PR tree-optimization/89550
        * semantics.c (maybe_convert_cond): Only set TREE_NO_WARNING if
        warning_at returned true.
        * decl2.c (c_parse_final_cleanups): Likewise.
        * typeck.c (convert_for_assignment): Likewise.
        * decl.c (finish_function): Likewise.

        PR c++/89585
        * parser.c (cp_parser_asm_definition): Just warn instead of error
        on volatile qualifier outside of function body.

        PR c++/89599
        * constexpr.c (potential_constant_expression_1): Reject
        REINTERPRET_CAST_P NOP_EXPRs.

        PR c++/89622
        * call.c (joust): Call print_z_candidate only if pedwarn returned
        true.

2019-03-07  Jason Merrill  <jason@redhat.com>

        PR c++/88123 - lambda and using-directive.
        * name-lookup.c (op_unqualified_lookup)
        (maybe_save_operator_binding, discard_operator_bindings)
        (push_operator_bindings): New.
        * typeck.c (build_x_binary_op, build_x_unary_op): Call
        maybe_save_operator_binding.
        * decl.c (start_preparsed_function): Call push_operator_bindings.
        * tree.c (cp_free_lang_data): Call discard_operator_bindings.

        PR c++/88820 - ICE with CTAD and member template used in DMI.
        * pt.c (do_class_deduction): Handle parm used as its own arg.

2019-03-07  Jakub Jelinek  <jakub@redhat.com>

        PR c++/89585
        * parser.c (cp_parser_asm_definition): Parse asm qualifiers even
        at toplevel, but diagnose them.

2019-03-06  Jason Merrill  <jason@redhat.com>

        PR c++/89381 - implicit copy and using-declaration.
        * class.c (classtype_has_move_assign_or_move_ctor_p): Don't consider
        op= brought in by a using-declaration.

2019-03-06  Jakub Jelinek  <jakub@redhat.com>

        PR c++/87148
        * init.c (build_value_init_noctor): Ignore flexible array members.

2019-03-06  Jason Merrill  <jason@redhat.com>

        PR c++/89576 - if constexpr of lambda capture.
        * semantics.c (maybe_convert_cond): Do convert a non-dependent
        condition in a template.
        * typeck.c (condition_conversion): Handle being called in a
        template.

2019-03-06  Marek Polacek  <polacek@redhat.com>

        PR c++/87378 - bogus -Wredundant-move warning.
        * typeck.c (maybe_warn_pessimizing_move): See if the maybe-rvalue
        overload resolution would actually succeed.

2019-03-05  Jason Merrill  <jason@redhat.com>

        * class.c (is_really_empty_class): Add ignore_vptr parm.
        (trivial_default_constructor_is_constexpr): Pass it.
        * call.c (build_over_call): Pass it.
        * constexpr.c (cxx_eval_constant_expression): Pass it instead of
        checking TYPE_POLYMORPHIC_P.
        (cxx_eval_component_reference, potential_constant_expression_1):
        Pass it.
        * cp-gimplify.c (simple_empty_class_p): Pass it.
        * init.c (expand_aggr_init_1): Pass it.

2019-03-04  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84605
        * parser.c (cp_parser_class_head): Reject TYPE_BEING_DEFINED too.

2019-03-04  Jakub Jelinek  <jakub@redhat.com>

        PR c++/71446
        * call.c (field_in_pset): New function.
        (build_aggr_conv): Handle CONSTRUCTOR_IS_DESIGNATED_INIT correctly.

2019-03-02  Jakub Jelinek  <jakub@redhat.com>

        PR c++/71446
        * cp-tree.h (CONSTRUCTOR_IS_DESIGNATED_INIT): Define.
        * parser.c (cp_parser_braced_list): Adjust cp_parser_initializer_list
        caller, set CONSTRUCTOR_IS_DESIGNATED_INIT.
        (cp_parser_initializer_list): Add designated parameter, set *designated
        to a bool whether any designators were parsed.
        * decl.c (reshape_init): Copy over CONSTRUCTOR_IS_DESIGNATED_INIT if
        needed.
        * pt.c (tsubst_copy_and_build): Likewise.
        * call.c (implicit_conversion): If CONSTRUCTOR_IS_DESIGNATED_INIT,
        don't call build_list_conv, nor build_complex_conv, nor attempt to
        convert a single element initializer to scalar.

2019-03-01  Marek Polacek  <polacek@redhat.com>

        PR c++/89537 - missing location for error with non-static member fn.
        * call.c (resolve_args): Use EXPR_LOCATION.
        * typeck.c (build_class_member_access_expr): Use input_location.

        PR c++/89532 - ICE with incomplete type in decltype.
        * semantics.c (finish_compound_literal): Return error_mark_node
        if digest_init_flags returns error_mark_node.

2019-03-01  Jakub Jelinek  <jakub@redhat.com>

        Implement P1002R1, Try-catch blocks in constexpr functions
        PR c++/89513
        * parser.c (cp_parser_ctor_initializer_opt_and_function_body):
        Diagnose constexpr ctor or function with function-try-block with
        pedwarn for c++17 and earlier.  Formatting fix.
        (cp_parser_try_block): Use pedwarn instead of error and only for
        c++17 and earlier when try block appears in constexpr function.
        * constexpr.c (build_constexpr_constructor_member_initializers):
        Handle TRY_BLOCK here instead of erroring on it.

2019-02-28  Jason Merrill  <jason@redhat.com>

        PR c++/88183 - ICE with .* fold-expression.
        * pt.c (fold_expression) [DOTSTAR_EXPR]: Remove special handling.

        PR c++/86969 - ICE with constexpr if and recursive generic lambdas.
        * class.c, lambda.c, pt.c: Revert earlier change.
        * lambda.c (add_capture): Don't special-case capture of dependent
        VLA.

        * name-lookup.c (print_binding_level): Print this_entity.

2019-02-27  Marek Polacek  <polacek@redhat.com>

        PR c++/88857 - ICE with value-initialization of argument in template.
        * call.c (convert_like_real): Don't call build_value_init in template.

2019-02-27  Jason Merrill  <jason@redhat.com>

        PR c++/86969 - ICE with constexpr if and recursive generic lambdas.
        * semantics.c (process_outer_var_ref): Do capture dependent vars.
        * class.c (finish_struct): Only add TAG_DEFN if T is in
        current_function_decl.
        * lambda.c (vla_capture_type): Force the capture type out into the
        lambda's enclosing function.
        (add_capture): Pass in the lambda.
        * pt.c (tsubst_lambda_expr): complete_type a VLA capture type.

2019-02-27  Marek Polacek  <polacek@redhat.com>

        PR c++/89511 - ICE with using-declaration and unscoped enumerator.
        * parser.c (cp_parser_using_declaration): For an unscoped enum
        only use its context if it's not a function declaration.

2019-02-27  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/89488
        * method.c (process_subob_fn): When maybe_instantiate_noexcept
        returns false don't call merge_exception_specifiers.

2019-02-27  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/88987
        * parser.c (cp_parser_noexcept_specification_opt): Return NULL_TREE
        for a non-constant parsed expression.

2019-02-26  Jakub Jelinek  <jakub@redhat.com>

        PR c++/89481
        * constexpr.c (cxx_eval_store_expression): When changing active union
        member, set no_zero_init.

2019-02-23  Marek Polacek  <polacek@redhat.com>

        PR c++/88294 - ICE with non-constant noexcept-specifier.
        * pt.c (maybe_instantiate_noexcept): Set up the list of local
        specializations.  Set current_class_{ptr,ref}.

2019-02-22  David Malcolm  <dmalcolm@redhat.com>

        PR c++/89390
        * parser.c (cp_parser_unqualified_id): Capture and use locations
        for destructors.

2019-02-22  Marek Polacek  <polacek@redhat.com>

        PR c++/89420 - ICE with CAST_EXPR in explicit-specifier.
        * decl.c (build_explicit_specifier): Don't check
        processing_template_decl.  Call instantiation_dependent_expression_p
        instead of value_dependent_expression_p.  Call
        instantiate_non_dependent_expr_sfinae before
        build_converted_constant_expr instead of calling
        instantiate_non_dependent_expr after it.  Add
        processing_template_decl_sentinel.

2019-02-22  Thomas Schwinge  <thomas@codesourcery.com>

        * parser.c (cp_parser_oacc_simple_clause): Remove parser formal
        parameter, move loc formal parameter to the front.  Adjust all
        users.
        (cp_parser_oacc_shape_clause): Add loc formal parameter.  Adjust
        all users.

2019-02-21  Jason Merrill  <jason@redhat.com>

        PR c++/87685 - generic lambda 'this' capture error.
        * lambda.c (lambda_expr_this_capture): Change add_capture_p to int.
        (maybe_generic_this_capture): Pass -1.

        PR c++/88394 - ICE with VLA init-capture.
        * lambda.c (is_normal_capture_proxy): Check DECL_CAPTURED_VARIABLE.

        PR c++/88869 - C++17 ICE with CTAD and explicit specialization.
        * pt.c (do_class_deduction): Don't include explicit specialization
        args in outer_args.

        PR c++/89422 - ICE with -g and lambda in default arg in template.
        * pt.c (tsubst_function_decl): SET_DECL_FRIEND_CONTEXT sooner.

2019-02-21  Jason Merrill  <jason@redhat.com>

        PR c++/88419 - C++17 ICE with class template arg deduction.
        * pt.c (make_template_placeholder): Set TYPE_CANONICAL after
        CLASS_PLACEHOLDER_TEMPLATE.

2019-02-21  Jakub Jelinek  <jakub@redhat.com>

        PR c++/89285
        * constexpr.c (struct constexpr_fundef): Add parms and result members.
        (retrieve_constexpr_fundef): Adjust for the above change.
        (register_constexpr_fundef): Save constexpr body with copy_fn,
        temporarily set DECL_CONTEXT on DECL_RESULT before that.
        (get_fundef_copy): Change FUN argument to FUNDEF with
        constexpr_fundef * type, grab body and parms/result out of
        constexpr_fundef struct and temporarily change it for copy_fn calls
        too.
        (cxx_eval_builtin_function_call): For __builtin_FUNCTION temporarily
        adjust current_function_decl from ctx->call context.  Test
        !potential_constant_expression instead of !is_constant_expression.
        (cxx_bind_parameters_in_call): Grab parameters from new_call.  Undo
        convert_for_arg_passing changes for TREE_ADDRESSABLE type passing.
        (cxx_eval_call_expression): Adjust get_fundef_copy caller.
        (cxx_eval_conditional_expression): For IF_STMT, allow then or else
        operands to be NULL.
        (label_matches): Handle BREAK_STMT and CONTINUE_STMT.
        (cxx_eval_loop_expr): Add support for FOR_STMT, WHILE_STMT and DO_STMT.
        (cxx_eval_switch_expr): Add support for SWITCH_STMT.
        (cxx_eval_constant_expression): Handle IF_STMT, FOR_STMT, WHILE_STMT,
        DO_STMT, CONTINUE_STMT, SWITCH_STMT, BREAK_STMT and CONTINUE_STMT.
        For SIZEOF_EXPR, recurse on the result of fold_sizeof_expr.  Ignore
        DECL_EXPR with USING_DECL operand.
        * lambda.c (maybe_add_lambda_conv_op): Build thisarg using
        build_int_cst to make it a valid constant expression.

2019-02-20  Jason Merrill  <jason@redhat.com>

        PR c++/88690 - C++17 ICE with empty base in aggregate.
        * typeck2.c (process_init_constructor_record): Skip trivial
        initialization of an empty base.

2019-02-21  Richard Biener  <rguenther@suse.de>

        PR middle-end/89392
        * vtable-class-hierarchy.c (vtv_generate_init_routine): Do not
        make symtab process new functions here.

2019-02-20  Jason Merrill  <jason@redhat.com>

        PR c++/87921 - wrong error with inline static data member.
        * decl2.c (finish_static_data_member_decl): Don't set DECL_IN_AGGR_P
        for a non-template inline variable.  Do nothing for an
        already-instantiated variable.
        (c_parse_final_cleanups): Check DECL_IN_AGGR_P without
        DECL_INLINE_VAR_P.
        * decl.c (check_initializer): Likewise.
        (make_rtl_for_nonlocal_decl): Likewise.
        * pt.c (instantiate_decl): Likewise.
        * typeck2.c (store_init_value): Likewise.

2019-02-20  Jakub Jelinek  <jakub@redhat.com>

        PR c++/89403
        * decl2.c (c_parse_final_cleanups): Move TREE_ASM_WRITTEN setting
        for flag_syntax_only from here...
        * semantics.c (expand_or_defer_fn_1): ... here.

        PR c++/89405
        * decl.c (maybe_commonize_var): When clearing TREE_PUBLIC and
        DECL_COMMON, set DECL_INTERFACE_KNOWN.

        PR c++/89336
        * constexpr.c (cxx_eval_store_expression): Diagnose changing of active
        union member for -std=c++17 and earlier.

2019-02-19  Jason Merrill  <jason@redhat.com>

        PR c++/87513 - 'sorry' mangling PMF template-id.
        * mangle.c (write_expression): Handle SCOPE_REF to BASELINK.

2019-02-19  Jason Merrill  <jason@redhat.com>

        PR c++/88380 - wrong-code with flexible array and NSDMI.
        * typeck2.c (process_init_constructor_record): Skip flexarrays.

2019-02-20  will wray  <wjwray@gmail.com>

        PR c++/88572 - wrong handling of braces on scalar init.
        * decl.c (reshape_init_r): Allow braces around scalar initializer
        within aggregate init.  Reject double braced-init of scalar
        variable.

2019-02-20  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84536
        * pt.c (tsubst_init): Diagnose an initializer expanding to an
        empty list of expressions; tweak wrt dependent types.
        (regenerate_decl_from_template): For VAR_DECLs call tsubst_init
        instead of tsubst_expr.

2019-02-19  Jason Merrill  <jason@redhat.com>

        PR c++/88368 - wrong 'use of deleted function'
        * method.c (walk_field_subobs): Remember errors from get_nsdmi.
        (get_defaulted_eh_spec): Call push_tinst_level.
        * pt.c (maybe_instantiate_noexcept): Keep error_mark_node.
        * typeck2.c (merge_exception_specifiers): Handle error_mark_node.

2019-02-19  Chung-Lin Tang <cltang@codesourcery.com>

        PR c/87924
        * parser.c (cp_parser_oacc_clause_wait): Add representation of wait
        clause without argument as 'wait (GOMP_ASYNC_NOVAL)', adjust comments.

2019-02-19  Jakub Jelinek  <jakub@redhat.com>

        PR c++/89387
        * lambda.c (maybe_generic_this_capture): Don't check
        DECL_NONSTATIC_MEMBER_FUNCTION_P on USING_DECLs.

        PR c++/89391
        * typeck.c (build_reinterpret_cast_1): Don't handle void to
        && conversion go through build_target_expr_with_type.

        PR c++/89390
        * error.c (qualified_name_lookup_error): Only call
        suggest_alternative_in_scoped_enum if name is IDENTIFIER_NODE.

2019-02-19  Tom Honermann  <tom@honermann.net>

        * name-lookup.c (get_std_name_hint): Added u8string as a name hint.

2019-02-18  Jason Merrill  <jason@redhat.com>

        PR c++/89336 - multiple stores in constexpr stmt.
        * constexpr.c (cxx_eval_store_expression): Preevaluate scalar or
        assigned value.

        * pt.c (check_explicit_specialization): If the declarator is a
        template-id, only check whether the arguments are dependent.

        Improve duplicate [[likely]] diagnostic.
        * parser.c (cp_parser_statement): Make attrs_loc a range.  Pass it
        to process_stmt_hotness_attribute.
        * cp-gimplify.c (process_stmt_hotness_attribute): Take attrs_loc.
        (genericize_if_stmt): Use likely/unlikely instead of predictor_name.

2019-02-17  Marek Polacek  <polacek@redhat.com>

        PR c++/89217 - ICE with list-initialization in range-based for loop.
        * constexpr.c (unshare_constructor): No longer static.
        * cp-tree.h (unshare_constructor): Declare.
        * semantics.c (finish_compound_literal): When dealing with a
        non-dependent expression in a template, return the original
        expression.  Pass LOOKUP_NO_NARROWING to digest_init_flags.

2019-02-13  Marek Polacek  <polacek@redhat.com>

        PR c++/89297 - ICE with OVERLOAD in template.
        * semantics.c (finish_compound_literal): Call
        instantiate_non_dependent_expr_sfinae.

2019-02-13  Alexandre Oliva <aoliva@redhat.com>

        PR c++/86379
        * cp-tree.h (USING_DECL_SCOPE): Use result rather than type.
        * name-lookup.c (strip_using_decl): Use USING_DECL_SCOPE.
        * search.c (protected_accessible_p): Follow USING_DECL_DECLS.
        (shared_member_p): Likewise.
        (lookup_member): Likewise.
        * decl.c (grok_special_member_properties): Skip USING_DECLs.
        * semantics.c (finish_omp_declare_simd_methods): Likewise.
        (finish_qualified_id_expr): Do not call shared_member_p with
        a dependent expr.

        PR c++/87322
        * pt.c (tsubst_lambda_expr): Avoid duplicate tsubsting.
        Move cp_evaluated resetting before signature tsubsting.
        (gen_elem_of_pack_expansion_instantiation): Separate local
        specializations per index.

2019-02-13  David Malcolm  <dmalcolm@redhat.com>

        PR c++/89036
        * class.c (add_method): Drop destructor assertion.

2019-02-13  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/88986
        * decl.c (make_typename_type): Allow for TYPE_PACK_EXPANSION as
        context (the first argument).
        * pt.c (tsubst, case TYPENAME_TYPE): Handle TYPE_PACK_EXPANSION
        as context.

2019-02-12  Jason Merrill  <jason@redhat.com>

        PR c++/89144 - link error with constexpr initializer_list.
        * call.c (convert_like_real) [ck_list]: Don't allocate a temporary
        array for an empty list.
        * typeck2.c (store_init_value): Don't use cxx_constant_init in a
        template.

2019-02-11  Jason Merrill  <jason@redhat.com>

        PR c++/89241 - ICE with __func__ in lambda in template.
        * pt.c (enclosing_instantiation_of): Also check
        instantiated_lambda_fn_p for the template context.

2019-02-11  Marek Polacek  <polacek@redhat.com>

        PR c++/89212 - ICE converting nullptr to pointer-to-member-function.
        * pt.c (tsubst_copy_and_build) <case CONSTRUCTOR>: Return early for
        null member pointer value.

2019-02-11  Jakub Jelinek  <jakub@redhat.com>

        PR c++/88977
        * pt.c (convert_nontype_argument): Pass true as manifestly_const_eval
        to maybe_constant_value calls.

2019-02-11  Marek Polacek  <polacek@redhat.com>

        * typeck2.c (digest_init_r): Remove commented code.

2019-02-11  Martin Sebor  <msebor@redhat.com>

        PR c++/87996
        * decl.c (compute_array_index_type_loc): Preserve signed sizes
        for diagnostics.  Call valid_array_size_p instead of error.
        * init.c (build_new_1): Compute size for diagnostic.  Call
        invalid_array_size_error
        (build_new): Call valid_array_size_p instead of error.

2019-02-07  Alexandre Oliva <aoliva@redhat.com>

        PR c++/86218
        * call.c (compare_ics): Deal with ck_aggr in either cs.

2019-02-06  David Malcolm  <dmalcolm@redhat.com>

        PR c++/71302
        * call.c (get_location_for_expr_unwinding_for_system_header): New
        function.
        (conversion_null_warnings): Use it when getting locations for
        EXPR, effectively adding a call to
        get_location_for_expr_unwinding_for_system_header for
        -Wconversion-null and making use of EXPR_LOCATION for
        -Wzero-as-null-pointer-constant.

2019-02-05  Jakub Jelinek  <jakub@redhat.com>

        PR c++/89187
        * optimize.c (maybe_thunk_body): Clear TREE_ADDRESSABLE on
        PARM_DECLs of the thunk.
        * lambda.c (maybe_add_lambda_conv_op): Likewise.

2019-02-05  Marek Polacek  <polacek@redhat.com>

        PR c++/89158 - by-value capture of constexpr variable broken.
        * call.c (convert_like_real) <case ck_user>: Call mark_exp_read
        instead of mark_rvalue_use.

2019-02-05  Alexandre Oliva <aoliva@redhat.com>

        PR c++/87770
        * pt.c (instantiates_primary_template_p): New.
        (type_dependent_expression_p): Use it.

2019-02-01  Jason Merrill  <jason@redhat.com>

        PR c++/88761 - ICE with reference capture of constant.
        * lambda.c (mark_const_cap_r): Do walk subtrees of DECL_EXPR for
        non-proxy decls.

2019-02-01  Marek Polacek  <polacek@redhat.com>

        PR c++/88325 - ICE with invalid out-of-line template member definition.
        * parser.c (cp_parser_class_name): Don't call make_typename_type
        for overloads.

2019-02-01  Jakub Jelinek  <jakub@redhat.com>

        PR c++/87175
        * parser.c (cp_parser_gnu_attributes_opt): Set ok to false
        if require_open failed.

2019-01-31  Marek Polacek  <polacek@redhat.com>

        PR c++/89083, c++/80864 - ICE with list initialization in template.
        * constexpr.c (adjust_temp_type): Use copy_node and change the type
        instead of using build_constructor.
        * decl.c (reshape_init_r): Don't reshape a digested initializer.
        Return the initializer for COMPOUND_LITERAL_P.

        PR c++/88983 - ICE with switch in constexpr function.
        * constexpr.c (cxx_eval_switch_expr): Use SWITCH_COND and SWITCH_BODY.
        (cxx_eval_constant_expression) <case COND_EXPR>: Don't look for the
        label in the else branch if we found it in the then branch.

2019-01-30  Jason Merrill  <jason@redhat.com>

        PR c++/88752 - ICE with lambda and constexpr if.
        * cp-tree.h (LAMBDA_EXPR_INSTANTIATED): New.
        * pt.c (tsubst_lambda_expr): Set it.
        (instantiated_lambda_fn_p): Check it.
        (enclosing_instantiation_of): Use it.

2019-01-31  Jakub Jelinek  <jakub@redhat.com>

        PR libstdc++/88170
        * cxx-pretty-print.c (pp_cxx_enumeration_constant): Print always as
        a C cast in pp_c_flag_gnu_v3 mode.

2019-01-30  Jakub Jelinek  <jakub@redhat.com>

        PR c++/88988
        * lambda.c (is_capture_proxy): Don't return true for
        DECL_OMP_PRIVATIZED_MEMBER artificial vars.

2019-01-30  Marek Polacek  <polacek@redhat.com>

        PR c++/89119 - ICE with value-initialization in template.
        * pt.c (tsubst_copy_and_build): Handle RANGE_EXPR.

2019-01-29  Jason Merrill  <jason@redhat.com>

        PR c++/86943 - wrong code converting lambda to function pointer.
        * lambda.c (maybe_add_lambda_conv_op): Use a template-id in the
        call.  Only forward parms for decltype.
        * pt.c (tsubst_copy_and_build) [CALL_EXPR]: Handle CALL_FROM_THUNK_P
        specially.
        * typeck.c (check_return_expr): Don't mess with a thunk call.

2019-01-28  Jason Merrill  <jason@redhat.com>

        PR c++/89089 - ICE with [[no_unique_address]].
        PR c++/88865 - wrong layout with [[no_unique_address]].
        * class.c (check_field_decls): A potentially-overlapping field makes
        the class non-layout-POD, but not non-empty.
        (end_of_class): Always consider empty data members.
        (layout_class_type): Set DECL_SIZE for empty fields.

2019-01-28  Marek Polacek  <polacek@redhat.com>

        PR c++/88358 - name wrongly treated as type.
        * parser.c (cp_parser_direct_declarator): Don't assume a qualified-id
        in parameter-list is a type if the function's declarator-id is not
        qualified.

2019-01-27  Marek Polacek  <polacek@redhat.com>

        PR c++/88815 - narrowing conversion lost in decltype.
        PR c++/78244 - narrowing conversion in template not detected.
        * cp-tree.h (CONSTRUCTOR_IS_DEPENDENT): New.
        * pt.c (instantiation_dependent_r): Consider a CONSTRUCTOR with
        CONSTRUCTOR_IS_DEPENDENT instantiation-dependent.
        * semantics.c (finish_compound_literal): When the compound literal
        isn't instantiation-dependent and the type isn't type-dependent,
        fall back to the normal processing.  Set CONSTRUCTOR_IS_DEPENDENT.

        PR c++/89024 - ICE with incomplete enum type.
        * call.c (standard_conversion): When converting an
        ARITHMETIC_TYPE_P to an incomplete type, return NULL.
        
2019-01-25  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/88969
        * call.c (build_op_delete_call): Implement 7.6.2.5/(10.1).
        * decl2.c (coerce_delete_type): Use build_pointer_type instead
        of TYPE_POINTER_TO.

2019-01-24  Jason Merrill  <jason@redhat.com>

        PR c++/89001 - mangling of reference temporaries
        * cp-tree.h (struct saved_scope): Add ref_temp_count.
        (current_ref_temp_count): New macro.
        * mangle.c (mangle_ref_init_variable): Use it.
        * typeck2.c (store_init_value): Clear it.
        * call.c (make_temporary_var_for_ref_to_temp): Copy public and
        comdat.

2019-01-24  Jakub Jelinek  <jakub@redhat.com>

        PR c++/88976
        * semantics.c (finish_omp_cancel): Diagnose more than one if
        on #pragma omp cancel with different modifiers.  Use
        maybe_convert_cond when not in template or build_x_binary_op
        otherwise.

2019-01-23  Marek Polacek  <polacek@redhat.com>

        PR c++/88757 - qualified name treated wrongly as type.
        * parser.c (cp_parser_direct_declarator): Don't treat qualified-ids
        in parameter-list as types if name lookup for declarator-id didn't
        find one or more function templates.

2019-01-23  Jakub Jelinek  <jakub@redhat.com>

        PR c/44715
        * cp-gimplify.c (genericize_cp_loop): Call begin_bc_block only
        after genericizing cond and incr expressions.

        PR c++/88984
        * cp-gimplify.c (genericize_switch_stmt): Move cond genericization
        before the begin_bc_block call.

2019-01-21  Jason Merrill  <jason@redhat.com>

        PR c++/87893 - constexpr ctor ICE on ARM.
        PR c++/88293 - ICE with comma expression.
        * constexpr.c (initialized_type): Don't shortcut non-void type.
        Handle COMPOUND_EXPR.
        (cxx_eval_outermost_constant_expr): Return early for void type.

2019-01-21  Jakub Jelinek  <jakub@redhat.com>

        PR c++/88949
        * optimize.c (cxx_copy_decl): New function.
        (clone_body): Use it instead of copy_decl_no_change.

        PR sanitizer/88901
        * typeck.c (cp_build_binary_op): Don't instrument
        SANITIZE_POINTER_COMPARE if processing_template_decl.
        (pointer_diff): Similarly for SANITIZE_POINTER_SUBTRACT.

2019-01-18  Jason Merrill  <jason@redhat.com>

        PR c++/88875 - error with explicit list constructor.
        * call.c (reference_binding): Don't modify EXPR.  Set
        need_temporary_p on the ck_user conversion for a temporary.
        (convert_like_real): Check it.

2019-01-18  H.J. Lu  <hongjiu.lu@intel.com>

        PR c/51628
        PR c/88664
        * call.c (convert_for_arg_passing): Upate the
        warn_for_address_or_pointer_of_packed_member call.
        * typeck.c (convert_for_assignment): Likewise.

2019-01-17  Jason Merrill  <jason@redhat.com>

        PR c++/86205 - ICE with ?: of throw and template-id.
        * pt.c (resolve_nondeduced_context_or_error): Split out from...
        * typeck.c (decay_conversion): ...here.
        * call.c (build_conditional_expr_1): Use it.

        PR c++/86740, ICE with constexpr if and nested generic lambdas.
        * tree.c (cp_walk_subtrees): Handle LAMBDA_EXPR.

2019-01-17  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grokdeclarator): Use typespec_loc in error messages
        about 'auto' and trailing return type.

2019-01-17  David Malcolm  <dmalcolm@redhat.com>

        PR c++/88699
        * class.c (add_method): Don't use DECL_DESTRUCTOR_P on
        USING_DECLs.

2019-01-17  Nathan Sidwell  <nathan@acm.org>

        PR c++/86610
        * semantics.c (process_outer_var_ref): Only skip dependent types
        in templates.

2019-01-17  Alexandre Oliva <aoliva@redhat.com>

        PR c++/87768
        * cp-tree.h (saved_scope): Add suppress_location_wrappers.
        * name-lookup.c (do_push_to_top_level): Save and reset it.
        (do_pop_from_top_level): Restore it.

        PR c++/86648
        * pt.c (make_template_placeholder): Use auto_identifier.
        (is_auto): Drop CLASS_PLACEHOLDER_TEMPLATE test.
        * error.c (dump_type): Handle template placeholders.
        * cxx-pretty-print.c (pp_cx_unqualified_id): Likewise.

        PR c++/88146
        * cvt.c (convert_to_void): Handle all cdtor calls as if
        returning void.

2019-01-16  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grokdeclarator): Use locations[ds_storage_class] in
        error messages about ill-formed uses of mutable.

2019-01-16  Marek Polacek  <polacek@redhat.com>

        PR c++/78244 - narrowing conversion in template not detected.
        * call.c (perform_implicit_conversion_flags): Set
        IMPLICIT_CONV_EXPR_BRACED_INIT.
        * cp-tree.h (IMPLICIT_CONV_EXPR_BRACED_INIT): New.
        * pt.c (tsubst_copy_and_build): Use it.

2019-01-15  David Malcolm  <dmalcolm@redhat.com>

        PR c++/88795
        * pt.c (build_deduction_guide): Bail out if tsubst_arg_types
        fails.

2019-01-15  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (start_decl): Improve error location.
        * decl2.c (grokfield): Likewise.

2019-01-15  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grokdeclarator): Move further up the location_t loc
        declaration and use the location when building a TYPE_DECL for
        a typedef name.
        * decl2.c (grokbitfield): Use DECL_SOURCE_LOCATION in the error
        about an ill-formed bit-field as typedef.

2019-01-14  Marek Polacek  <polacek@redhat.com>

        PR c++/88830 - ICE with abstract class.
        * decl2.c (maybe_emit_vtables): Check CLASSTYPE_LAZY_DESTRUCTOR.
        Fix formatting.

        PR c++/88825 - ICE with bogus function return type deduction.
        * typeck.c (can_do_nrvo_p): Check error_mark_node.

2019-01-14  Tom Honermann  <tom@honermann.net>

        Implement P0482R5, char8_t: A type for UTF-8 characters and strings
        * cvt.c (type_promotes_to): Handle char8_t promotion.
        * decl.c (grokdeclarator): Handle invalid type specifier
        combinations involving char8_t.
        * lex.c (init_reswords): Add char8_t as a reserved word.
        * mangle.c (write_builtin_type): Add name mangling for char8_t (Du).
        * parser.c (cp_keyword_starts_decl_specifier_p)
        (cp_parser_simple_type_specifier): Recognize char8_t as a simple
        type specifier.
        (cp_parser_string_literal): Use char8_array_type_node for the type
        of CPP_UTF8STRING.
        (cp_parser_set_decl_spec_type): Tolerate char8_t typedefs in system
        headers.
        * rtti.c (emit_support_tinfos): type_info support for char8_t.
        * tree.c (char_type_p): Recognize char8_t as a character type.
        * typeck.c (string_conv_p): Handle conversions of u8 string
        literals of char8_t type.
        (check_literal_operator_args): Handle UDLs with u8 string literals
        of char8_t type.
        * typeck2.c (ordinary_char_type_p): New.
        (digest_init_r): Disallow initializing a char array with a u8 string
        literal.

2019-01-14  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/88263
        * decl2.c (get_tls_wrapper_fn): Use DECL_SOURCE_LOCATION
        as location of the TLS wrapper.

2019-01-12  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (cp_finish_decl): Improve error location.
        * decl2.c (grokfield): Likewise, improve two locations.

2019-01-11  Marek Polacek  <polacek@redhat.com>

        PR c++/88692, c++/87882 - -Wredundant-move false positive with *this.
        * typeck.c (maybe_warn_pessimizing_move): Return if ARG isn't
        ADDR_EXPR.

2019-01-11  Jason Merrill  <jason@redhat.com>

        PR c++/88312 - pack expansion of decltype.
        * pt.c (instantiation_dependent_r): A template non-type parameter
        pack is instantiation-dependent.

2019-01-11  Jason Merrill  <jason@redhat.com>

        PR c++/88613 - ICE with use of const var in lambda.
        * expr.c (mark_use): Fix location wrapper handling.
        * cp-gimplify.c (cp_fold_maybe_rvalue): Call mark_rvalue_use.

2019-01-11  Tobias Burnus  <burnus@net-b.de>

        PR C++/88114
        * decl2.c (maybe_emit_vtables): If needed, generate code for
        the destructor of an abstract class.
        (mark_used): Update comment for older function-name change.

2019-01-11  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (start_decl): Improve error location.
        (grokdeclarator): Likewise, improve two locations.

2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>

        PR other/16615

        * cp-tree.h: Mechanically replace "can not" with "cannot".
        * parser.c: Likewise.
        * pt.c: Likewise.

2019-01-08  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grok_reference_init): Improve error location.
        (grokdeclarator): Likewise, improve two locations.

2019-01-08  Marek Polacek  <polacek@redhat.com>

        PR c++/88538 - braced-init-list in template-argument-list.
        * parser.c (cp_parser_template_argument): Handle braced-init-list when
        in C++20.

        PR c++/88548 - this accepted in static member functions.
        * parser.c (cp_debug_parser): Adjust printing of
        local_variables_forbidden_p.
        (cp_parser_new): Set local_variables_forbidden_p to 0 rather than false.
        (cp_parser_primary_expression): When checking
        local_variables_forbidden_p, use THIS_FORBIDDEN or
        LOCAL_VARS_FORBIDDEN.
        (cp_parser_lambda_body): Update the type of
        local_variables_forbidden_p.  Set it to 0 rather than false.
        (cp_parser_condition): Adjust call to cp_parser_declarator.
        (cp_parser_explicit_instantiation): Likewise.
        (cp_parser_init_declarator): Likewise.
        (cp_parser_declarator): New parameter.  Use it.
        (cp_parser_direct_declarator): New parameter.  Use it to set
        local_variables_forbidden_p.  Adjust call to cp_parser_declarator.
        (cp_parser_type_id_1): Adjust call to cp_parser_declarator.
        (cp_parser_parameter_declaration): Likewise.
        (cp_parser_default_argument): Update the type of
        local_variables_forbidden_p.  Set it to LOCAL_VARS_AND_THIS_FORBIDDEN
        rather than true.
        (cp_parser_member_declaration): Tell cp_parser_declarator if we saw
        'static' or 'friend'.
        (cp_parser_exception_declaration): Adjust call to cp_parser_declarator.
        (cp_parser_late_parsing_default_args): Update the type of
        local_variables_forbidden_p.  Set it to LOCAL_VARS_AND_THIS_FORBIDDEN
        rather than true.
        (cp_parser_cache_defarg): Adjust call to cp_parser_declarator.
        (cp_parser_objc_class_ivars): Likewise.
        (cp_parser_objc_struct_declaration): Likewise.
        (cp_parser_omp_for_loop_init): Likewise.
        * parser.h (cp_parser): Change the type of local_variables_forbidden_p
        to unsigned char.
        (LOCAL_VARS_FORBIDDEN, LOCAL_VARS_AND_THIS_FORBIDDEN, THIS_FORBIDDEN):
        Define.

2019-01-08  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (start_decl): Improve permerror location.

2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR c++/88554
        * decl.c (finish_function): For -Wreturn-type don't add a return *this;
        fixit hint if current_class_ref is NULL.  Use a single if instead of
        two nested ones.

2019-01-07  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (start_decl): Improve two error_at locations.
        (expand_static_init): Likewise.

2019-01-07  Marek Polacek  <polacek@redhat.com>

        PR c++/88741 - wrong error with initializer-string.
        * decl.c (cp_complete_array_type): Strip any location wrappers.

2019-01-07  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR c++/88261
        PR c++/69338
        PR c++/69696
        PR c++/69697
        * cp-tree.h (LOOKUP_ALLOW_FLEXARRAY_INIT): New flag value.
        * typeck2.c (digest_init_r): Raise an error for non-static
        initialization of a flexible array member.
        (process_init_constructor, massage_init_elt,
        process_init_constructor_array, process_init_constructor_record,
        process_init_constructor_union, process_init_constructor): Add the
        flags parameter and pass it thru.
        (store_init_value): Pass LOOKUP_ALLOW_FLEXARRAY_INIT parameter to
        digest_init_flags for static decls.

2019-01-07  Jakub Jelinek  <jakub@redhat.com>

        PR c++/85052
        * cp-tree.h (cp_build_vec_convert): Declare.
        * parser.c (cp_parser_postfix_expression): Parse
        __builtin_convertvector.
        * constexpr.c: Include fold-const-call.h.
        (cxx_eval_internal_function): Handle IFN_VEC_CONVERT.
        (potential_constant_expression_1): Likewise.
        * semantics.c (cp_build_vec_convert): New function.
        * pt.c (tsubst_copy_and_build): Handle CALL_EXPR to
        IFN_VEC_CONVERT.

2019-01-03  Jakub Jelinek  <jakub@redhat.com>

        PR c++/88636
        * decl.c (builtin_function_1): Return result of pushdecl_top_level
        or pushdecl rather than decl.

2019-01-03  Paolo Carlini  <paolo.carlini@oracle.com>

        * tree.c (handle_nodiscard_attribute): Improve warning location.

2019-01-02  Marek Polacek  <polacek@redhat.com>

        PR c++/88612 - ICE with -Waddress-of-packed-member.
        * call.c (convert_for_arg_passing): Only give warnings with tf_warning.
        * typeck.c (convert_for_assignment): Likewise.

        PR c++/88631 - CTAD failing for value-initialization.
        * typeck2.c (build_functional_cast): Try deducing the template
        arguments even if there are no arguments to deduce from.

2019-01-01  Jakub Jelinek  <jakub@redhat.com>

        Update copyright years.
\f
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