Reduce accumulated garbage in constexpr evaluation.

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

2019-06-04  Jason Merrill  <jason@redhat.com>

        Reduce accumulated garbage in constexpr evaluation.
        * constexpr.c (cxx_eval_call_expression): ggc_free any bindings we
        don't save.
        (cxx_eval_increment_expression): ggc_free the MODIFY_EXPR after
        evaluating it.

2019-06-04  Jakub Jelinek  <jakub@redhat.com>

        * cp-tree.h (CP_OMP_CLAUSE_INFO): Allow for any clauses up to _condvar_
        instead of only up to linear.

2019-06-03  Paolo Carlini  <paolo.carlini@oracle.com>

        * parser.c (cp_parser_unqualified_id): Use build_min_nt_loc in
        five places.

2019-06-01  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR c++/85254
        * class.c (fixup_type_variants): Handle CLASSTYPE_FINAL.

2019-05-31  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (IDENTIFIER_LAMBDA_P): New.
        (TYPE_ANON_P): New.
        (LAMBDA_TYPE_P, TYPE_UNNAMED_P):  Likewise.
        (LAMBDANAME_PREFIX, LAMBDANAME_FORMAT): Delete.
        (make_lambda_name): Don't declare.
        * error.c (dump_aggr_type): Check for lambdas before other
        anonymous names.
        * lambda.c (begin_lambda_type): Use make_anon_name.
        * cp-lang.c (cxx_dwarf_name): Lambda names smell anonymous.
        * mangle.c (write_local_name): Likewise.
        * name-lookup.c (lambda_cnt, make_lambda_name): Delete.

2019-05-30  Marek Polacek  <polacek@redhat.com>

        * cp-tree.h (TYPE_HAS_NONTRIVIAL_DESTRUCTOR): Fix a typo.

2019-05-31  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grokdeclarator): Use declarator->id_loc in five
        error_at calls.

2019-05-29  Jakub Jelinek  <jakub@redhat.com>

        PR c++/90598
        * tree.c (lvalue_kind): Return clk_none for expressions with
        with VOID_TYPE_P.

2019-05-29  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/89875
        * parser.c (cp_parser_sizeof_operand): When the type-id production
        did not work out commit to the tentative parse.

2019-05-29  Jakub Jelinek  <jakub@redhat.com>

        P1091R3 - Extending structured bindings to be more like var decls
        P1381R1 - Reference capture of structured bindings
        * decl.c (cp_maybe_mangle_decomp): Handle TREE_STATIC decls even at
        function scope.
        (cp_finish_decomp): Copy over various decl properties from decl to
        v[i] in the tuple case.
        (grokdeclarator): Allow static, thread_local and __thread for C++2a
        and use pedwarn instead of error for older standard revisions.
        Make other structured binding diagnostic messages more i18n friendly.

2019-05-28  Nathan Sidwell  <nathan@acm.org>

        * decl.c (duplicate_decls): Assert a template newdecl has no
        specializations.

2019-05-28  Marek Polacek  <polacek@redhat.com>

        PR c++/90548 - ICE with generic lambda and empty pack.
        * pt.c (tsubst_copy_and_build): Handle pack expansion properly.

2019-05-28  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (make_anon_name): Drop declaration.
        (TYPE_UNNAMED_P): Use IDENTIFIER_ANON_P.
        * cp-lang.c (cxx_dwarf_name): Likewise.
        * class.c (find_flexarrays): Likewise.
        * decl.c (name_unnamed_type, xref_tag_1): Likewise.
        * error.c (dump_aggr_type): Likewise.
        * pt.c (push_template_decl_real): Likewise.
        * name-lookup.c (consider_binding_level): Likewise.
        (anon_cnt, make_anon_name): Delete.

2019-05-25  Marek Polacek  <polacek@redhat.com>

        PR c++/90572 - wrong disambiguation in friend declaration.
        * parser.c (cp_parser_constructor_declarator_p): Don't allow missing
        typename for friend declarations.

2019-05-23  Jonathan Wakely  <jwakely@redhat.com>

        * cp-tree.h (CP_AGGREGATE_TYPE_P): Fix whitespace.

        * init.c (std_placement_new_fn_p): Remove outdated TODO comment that
        was resolved by r254694.

2019-05-22  Jason Merrill  <jason@redhat.com>

        PR c++/20408 - unnecessary code for empty struct.
        * call.c (build_call_a): Use simple_empty_class_p.

        PR c++/86485 - -Wmaybe-unused with empty class ?:
        * cp-gimplify.c (simple_empty_class_p): Also true for MODIFY_EXPR.

2019-05-21  Paolo Carlini  <paolo.carlini@oracle.com>

        * parser.c (cp_parser_template_declaration_after_parameters): Use
        DECL_SOURCE_LOCATION in literal operator template errors.

2019-05-21  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/67184
        PR c++/69445
        * call.c (build_over_call): Devirtualize when the final overrider
        comes from the base.

2019-05-21  Nathan Sidwell  <nathan@acm.org>

        * name-lookup.c (do_nonmember_using_decl): Drop INSERT_P
        parameter.  Document.
        (finish_nonmember_using_decl): Adjust do_nonmember_using_decl
        calls.  Remove stray FIXME comment.

        * name-lookup.h (struct cp_binding_level): Drop usings field.
        (finish_namespace_using_decl, finish_local_using_decl): Replace with ...
        (finish_nonmember_using_decl): ... this.
        * name-lookup.c (push_using_decl_1, push_using_decl):
        (do_nonmember_using_decl): ... here.  Add INSERT_P arg.  Reimplement.
        (validate_nonmember_using_decl, finish_namespace_using_decl)
        (finish_local_using_decl): Replace with ...
        (finish_nonmember_using_decl): ... this.  Drop DECL parm.
        * parser.c (cp_parser_using_declaration): Don't do lookup here.
        * pt.c (tsubst_expr): Do not do using decl lookup here.

2019-05-21  Eric Botcazou  <ebotcazou@adacore.com>

        * decl2.c (cpp_check) <IS_ASSIGNMENT_OPERATOR>: New case.

2019-05-20  Marek Polacek  <polacek@redhat.com>

        CWG 2094 - volatile scalars are trivially copyable.
        PR c++/85679
        * tree.c (trivially_copyable_p): Don't check CP_TYPE_VOLATILE_P for
        scalar types.

2019-05-20  Marek Polacek  <polacek@redhat.com>

        * pt.c (convert_template_argument): Add a diagnostic for the
        [temp.arg]/2 ambiguity case.

        * name-lookup.c (finish_using_directive): Don't issue inform() if the
        warning didn't trigger.  Add quoting.  Tweak the inform message.

2019-05-20  Paolo Carlini  <paolo.carlini@oracle.com>

        * cp-tree.h: Remove remnants of CONV_NONCONVERTING.

2019-05-20  Nathan Sidwell  <nathan@acm.org>

        * name-lookup.c (finish_namespace_using_directive)
        (finish_local_using_directive): Merge to ...
        (finish_using_directive): ... here.  Handle both contexts.
        * name-lookup.h (finish_namespace_using_directive)
        (finish_local_using_directive): Replace with ...
        (finish_using_directive): ... this.
        * parser.c (cp_parser_using_directive): Adjust.
        * pt.c (tsubst_expr): Likewise.

        * cp-tree.h (struct lang_decl_ns): Remove usings field.
        (DECL_NAMESPACE_USING): Delete.
        * name-lookup.c (name_lookup::search_usings): Use namespace's
        binding scope.
        (name_lookup::queue_namespae): Likewise.
        (finish_namespace_using_directive, push_namespace): Likewise.
        (has_using_namespace_std_directive): Just search the entire
        binding stack.

2019-05-20  Jonathan Wakely  <jwakely@redhat.com>

        PR c++/90532 Ensure __is_constructible(T[]) is false
        * method.c (is_xible_helper): Return error_mark_node for construction
        of an array of unknown bound.

2019-05-17  Thomas Schwinge  <thomas@codesourcery.com>

        PR c++/89433
        * parser.c (cp_finalize_oacc_routine): Rework checking if already
        marked with an OpenACC 'routine' directive.

        PR c++/89433
        * parser.c (cp_parser_oacc_routine)
        (cp_parser_late_parsing_oacc_routine): Normalize order of clauses.
        (cp_finalize_oacc_routine): Call oacc_verify_routine_clauses.

        PR c++/89433
        * parser.c (cp_finalize_oacc_routine): Refer to OpenACC 'routine'
        clauses from "omp declare target" attribute.

2019-05-16  Martin Sebor  <msebor@redhat.com>

        * call.c (print_z_candidate): Wrap diagnostic text in a gettext
        macro.  Adjust.
        (print_z_candidates): Same.
        (build_conditional_expr_1): Quote keywords, operators, and types
        in diagnostics.
        (build_op_delete_call): Same.
        (maybe_print_user_conv_context): Wrap diagnostic text in a gettext
        macro.
        (convert_like_real): Same.
        (convert_arg_to_ellipsis): Quote keywords, operators, and types
        in diagnostics.
        (build_over_call): Same.
        (joust): Break up an overlong line.  Wrap diagnostic text in a gettext
        macro.
        * constexpr.c (cxx_eval_check_shift_p): Spell out >= in English.
        (cxx_eval_constant_expression): Quote keywords, operators, and types
        in diagnostics.
        (potential_constant_expression_1): Same.
        * cp-gimplify.c (cp_genericize_r): Same.
        * cvt.c (maybe_warn_nodiscard): Quote keywords, operators, and types
        in diagnostics.
        (type_promotes_to): Same.
        * decl.c (check_previous_goto_1): Same.
        (check_goto): Same.
        (start_decl): Same.
        (cp_finish_decl): Avoid parenthesizing a sentence for consistency.
        (grok_op_properties): Quote keywords, operators, and types
        in diagnostics.
        * decl2.c (grokfield): Same.
        (coerce_delete_type): Same.
        * except.c (is_admissible_throw_operand_or_catch_parameter): Same.
        * friend.c (do_friend): Quote C++ tokens.
        * init.c (build_new_1): Quote keywords, operators, and types
        in diagnostics.
        (build_vec_delete_1): Same.
        (build_delete): Same.
        * lex.c (parse_strconst_pragma): Same.
        (handle_pragma_implementation): Same.
        (unqualified_fn_lookup_error): Same.
        * mangle.c (write_type): Same.
        * method.c (defaulted_late_check): Avoid two consecutive punctuators.
        * name-lookup.c (cp_binding_level_debug): Remove a trailing newline.
        (pop_everything): Same.
        * parser.c (cp_lexer_start_debugging): Quote a macro name.
        in a diagnostic
        (cp_lexer_stop_debugging): Same.
        (cp_parser_userdef_numeric_literal): Quote a C++ header name
        in a diagnostic.
        (cp_parser_nested_name_specifier_opt): Quote keywords, operators,
        and types in diagnostics.
        (cp_parser_question_colon_clause): Same.
        (cp_parser_asm_definition): Same.
        (cp_parser_init_declarator): Same.
        (cp_parser_template_declaration_after_parameters): Avoid capitalizing
        a sentence in a diagnostic.
        (cp_parser_omp_declare_reduction): Quote keywords, operators, and types
        in diagnostics.
        (cp_parser_transaction): Same.
        * pt.c (maybe_process_partial_specialization): Replace second call
        to permerror with inform for consistency with other uses.
        (expand_integer_pack): Quote keywords, operators, and types
        in diagnostics.
        * rtti.c (get_typeid): Quote keywords, operators, and types
        in diagnostics.
        (build_dynamic_cast_1): Same.
        * semantics.c (finish_asm_stmt): Same.
        (finish_label_decl): Same.
        (finish_bases): Same.
        (finish_offsetof): Same.
        (cp_check_omp_declare_reduction): Same.
        (finish_decltype_type): Same.
        * tree.c (handle_init_priority_attribute): Same.  Add detail
        to diagnostics.
        (maybe_warn_zero_as_null_pointer_constant): Same.
        * typeck.c (cp_build_binary_op): Quote keywords, operators, and types
        in diagnostics.
        (cp_build_unary_op): Same.
        (check_for_casting_away_constness): Same.
        (build_static_cast): Same.
        (build_const_cast_1): Same.
        (maybe_warn_about_returning_address_of_local): Same.
        (check_return_expr): Same.
        * typeck2.c (abstract_virtuals_error_sfinae): Same.
        (digest_init_r): Replace a tab with spaces in a diagnostic.
        (build_functional_cast): Quote keywords, operators, and types
        in diagnostics.

2019-05-15  Jakub Jelinek  <jakub@redhat.com>

        PR debug/90197
        * cp-gimplify.c (genericize_cp_loop): Emit a DEBUG_BEGIN_STMT
        before the condition (or if missing or constant non-zero at the end
        of the loop.  Emit a DEBUG_BEGIN_STMT before the increment expression
        if any.  Don't call protected_set_expr_location on incr if it already
        has a location.

2019-05-15  Marek Polacek  <polacek@redhat.com>

        CWG 2096 - constraints on literal unions.
        * class.c (check_field_decls): Initialize booleans directly.  A union
        is literal if at least one of its non-static data members is of
        non-volatile literal type.

2019-05-15  Paolo Carlini  <paolo.carlini@oracle.com>

        * cp-tree.h (REFERENCE_VLA_OK): Remove.
        * lambda.c (build_capture_proxy): Remove use of the above.

2019-05-15  Paolo Carlini  <paolo.carlini@oracle.com>

        * call.c (perform_overload_resolution, build_new_method_call_1):
        Use OVL_P; remove redundant TEMPLATE_DECL checks.
        * decl.c (grokfndecl): Likewise.
        * mangle.c (write_expression): Likewise.
        * parser.c (cp_parser_template_id): Likewise.
        * pt.c (resolve_overloaded_unification, type_dependent_expression_p):
        Likewise.
        * search.c (build_baselink): Likewise.
        * tree.c (is_overloaded_fn, dependent_name, maybe_get_fns): Likewise.

2019-05-14  Paolo Carlini  <paolo.carlini@oracle.com>

        PR preprocessor/90382
        * decl.c (grokdeclarator): Fix value assigned to typespec_loc, use
        min_location.

2019-05-13  Jason Merrill  <jason@redhat.com>

        Use releasing_vec more broadly.
        * cp-tree.h (struct releasing_vec): Replace get_ref method with
        operator&.
        (vec_safe_push, vec_safe_reserve, vec_safe_length, vec_safe_splice):
        Forwarding functions for releasing_vec.
        (release_tree_vector): Declare but don't define.
        * call.c (build_op_delete_call, build_temp, call_copy_ctor)
        (perform_direct_initialization_if_possible): Use releasing_vec.
        * constexpr.c (cxx_eval_vec_init_1, cxx_eval_store_expression):
        Likewise.
        * cp-gimplify.c (cp_fold): Likewise.
        * cvt.c (force_rvalue, ocp_convert): Likewise.
        * decl.c (get_tuple_decomp_init): Likewise.
        * except.c (build_throw): Likewise.
        * init.c (perform_member_init, expand_default_init): Likewise.
        * method.c (do_build_copy_assign, locate_fn_flags): Likewise.
        * parser.c (cp_parser_userdef_char_literal)
        (cp_parser_userdef_numeric_literal)
        (cp_parser_userdef_string_literal)
        (cp_parser_perform_range_for_lookup)
        (cp_parser_range_for_member_function, cp_parser_omp_for_loop)
        (cp_parser_omp_for_loop_init): Likewise.
        * pt.c (tsubst_copy_and_build, do_class_deduction): Likewise.
        * semantics.c (calculate_direct_bases, calculate_bases)
        (finish_omp_barrier, finish_omp_flush, finish_omp_taskwait)
        (finish_omp_taskyield, finish_omp_cancel)
        (finish_omp_cancellation_point): Likewise.
        * tree.c (build_vec_init_elt, strip_typedefs, strip_typedefs_expr)
        (build_min_non_dep_op_overload): Likewise.
        * typeck.c (build_function_call_vec, cp_build_function_call_nary)
        (cp_build_modify_expr): Likewise.
        * typeck2.c (build_functional_cast): Likewise.

2019-05-11  Paolo Carlini  <paolo.carlini@oracle.com>

        * typeck.c (cp_build_function_call_vec): When mark_used fails
        unconditionally return error_mark_node.

2019-05-10  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grokvardecl): Use an accurate location in error message
        about main as a global variable.

2019-05-10  Paolo Carlini  <paolo.carlini@oracle.com>

        * call.c (build_call_a): Use FUNC_OR_METHOD_TYPE_P.
        * cp-gimplify.c (cp_fold): Likewise.
        * cp-objcp-common.c (cp_type_dwarf_attribute): Likewise.
        * cp-tree.h (TYPE_OBJ_P, TYPE_PTROBV_P): Likewise.
        * cvt.c (perform_qualification_conversions): Likewise.
        * decl.c (grokdeclarator): Likewise.
        * decl2.c (build_memfn_type): Likewise.
        * mangle.c (canonicalize_for_substitution, write_type): Likewise.
        * parser.c (cp_parser_omp_declare_reduction): Likewise.
        * pt.c (check_explicit_specialization, uses_deducible_template_parms,
        check_cv_quals_for_unify, dependent_type_p_r): Likewise.
        * rtti.c (ptr_initializer): Likewise.
        * semantics.c (finish_asm_stmt, finish_offsetof,
        cp_check_omp_declare_reduction): Likewise.
        * tree.c (cp_build_qualified_type_real,
        cp_build_type_attribute_variant, cxx_type_hash_eq,
        cxx_copy_lang_qualifiers, cp_free_lang_data): Likewise.
        * typeck.c (structural_comptypes, convert_arguments,
        cp_build_addr_expr_1, unary_complex_lvalue, cp_build_c_cast,
        cp_build_modify_expr, comp_ptr_ttypes_real, type_memfn_rqual):
        Likewise.

2019-05-10  Marek Polacek  <polacek@redhat.com>

        PR c++/78010 - bogus -Wsuggest-override warning on final function.
        * class.c (check_for_override): Don't warn for final functions.

2019-05-10  Jakub Jelinek  <jakub@redhat.com>

        PR pch/90326
        * config-lang.in (gtfiles): Remove c-family/c-lex.c, add
        c-family/c-cppbuiltin.c.

2019-05-09  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/90382
        Revert:
        2018-04-26  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grokdeclarator): Fix value assigned to typespec_loc, use
        min_location.

2019-05-08  Nathan Sidwell  <nathan@acm.org>

        Kill DECL_SAVED_FUNCTION_DATA .
        * cp-tree.h (language_function): Remove x_auto_return_pattern.
        (current_function_auto_return_pattern): Delete.
        (lang_decl_fn): Replace saved_language_function with
        saved_auto_return type.
        (DECL_SAVED_FUNCTION_DATA): Delete.
        (DECL_SAVED_AUTO_RETURN_TYPE): New.
        (FNDECL_USED_AUTO): Correct documentation.
        * decl.c (duplicate_decls): Adjust AUTO return handling.
        (start_preparsed_function): Replace
        current_function_auto_return_pattern with
        DECL_SAVED_AUTO_RETURN_TYPE.  Remove DECL_SAVED_FUNCTION_DATA
        zapping.
        (finish_function): Likewise.
        (save_function_data): Delete.
        (fndecl_declared_return_type): Reimplement.
        * mangle.c (write_unqualified_name): Use DECL_SAVED_AUTO_RETURN_TYPE.
        * method.c (make_thunk, make_alias_for): Likewise.
        * parser.c (cp_parser_jump_statement): Likewise.
        * pt.c (do_auto_deduction): Likewise.
        * typeck.c (check_return_expr): Likewise.

2019-05-06  Jason Merrill  <jason@redhat.com>

        PR c++/90171 - reorganize usual_deallocation_fn_p
        * call.c (struct dealloc_info): New.
        (usual_deallocation_fn_p): Take a dealloc_info*.
        (aligned_deallocation_fn_p, sized_deallocation_fn_p): Remove.
        (build_op_delete_call): Adjust.

2019-05-07  Jason Merrill  <jason@redhat.com>

        PR c++/86485 - -Wmaybe-unused with empty class ?:
        * typeck.c (build_static_cast_1): Use cp_build_addr_expr.

        * pt.c (type_dependent_expression_p): A non-type template parm with
        a placeholder type is type-dependent.

2019-05-06  Marek Polacek  <polacek@redhat.com>

        PR c++/90265 - ICE with generic lambda.
        * pt.c (tsubst_copy_and_build): Use a dedicated variable for the last
        element in the vector.

2019-05-03  Martin Liska  <mliska@suse.cz>

        * call.c (build_aggr_conv): Use is_empty instead of
        elements () == 0 (and similar usages).
        * parser.c (cp_parser_lambda_introducer): Likewise.

2019-05-02  Nathan Sidwell  <nathan@acm.org>

        * semantics.c (finish_id_expression_1): Remove unreachable code.

2019-05-01  Nathan Sidwell  <nathan@acm.org>

        * name-lookup.h (get_class_binding_direct): Change final arg to
        bool.
        (get_class_binding): Likewise.
        * name-lookup.c (get_class_binding_direct): Replace TYPE_OR_FNS
        arg with WANT_TYPE bool.  Simplify.
        (get_class_binding): Adjust final arg.
        * decl.c (reshape_init_class): Adjust get_class_binding calls.

2019-04-30  Nathan Sidwell  <nathan@acm.org>

        * cp-objcp-common.c (cp_common_init_ts): Use MARK_TS_EXP for _EXPR
        nodes.  Call c_common_init_ts.

2019-04-29  Nathan Sidwell  <nathan@acm.org>

        * decl.c (duplicate_decls): Add whitespace, move comments into
        conditional blocks.
        * method.c (explain_implicit_non_constexpr): Refactor.
        * pt.c (check_explicit_specialization): Fix indentation.
        * semantics.c (process_outer_var_ref): Reformat.
        (finish_id_expression_1): Use STRIP_TEMPLATE.

2019-04-26  Jonathan Wakely  <jwakely@redhat.com>

        PR c++/90243 - orphaned note in uninstantiated constexpr function
        * decl.c (check_for_uninitialized_const_var): Suppress notes if no
        error was shown.

2019-04-26  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/90173
        * decl.c (grokdeclarator): Set type to error_mark_node
        upon error about template placeholder type non followed
        by a simple declarator-id.

2019-04-26  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grokdeclarator): Fix value assigned to typespec_loc, use
        min_location.

2019-04-24  Jason Merrill  <jason@redhat.com>

        PR c++/90227 - error with template parameter packs.
        * pt.c (coerce_template_parms): Do add empty pack when
        require_all_args.

2019-04-24  Richard Biener  <rguenther@suse.de>

        * call.c (null_ptr_cst_p): Order checks according to expensiveness.
        (conversion_null_warnings): Likewise.
        * typeck.c (same_type_ignoring_top_level_qualifiers_p): Return
        early if type1 == type2.

2019-04-22  Jason Merrill  <jason@redhat.com>

        PR c++/87366 - wrong error with alias template.
        * typeck.c (structural_comptypes): When comparing_specializations,
        aliases are unequal.
        (comptypes): When comparing_specializations, do structural
        comparison.

2019-04-19  Jason Merrill  <jason@redhat.com>

        PR c++/90190 - CTAD with list-constructor.
        * pt.c (do_class_deduction): Don't try the single element deduction
        if the single element is also a braced list.

        PR c++/90171 - ICE with destroying delete with size_t parm.
        * call.c (sized_deallocation_fn_p): New.  Use it instead of
        second_parm_is_size_t in most cases.
        (second_parm_is_size_t): Don't check for aligned.

2019-04-19  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/89900
        * pt.c (fn_type_unification): When handling null explicit
        arguments do not special case non-parameter packs.

2019-04-19  Jakub Jelinek  <jakub@redhat.com>

        PR c++/90138
        * pt.c (process_template_parm): Set decl to pushdecl result.  If
        !is_non_type, also set parm to that.

        PR c/89888
        * decl.c (struct cp_switch): Remove outside_range_p member.
        (push_switch): Don't clear it.
        (pop_switch): Adjust c_do_switch_warnings caller.
        (finish_case_label): Adjust c_add_case_label caller.

        PR c++/90108
        * decl.c (duplicate_decls): If remove is main variant and
        DECL_ORIGINAL_TYPE is some other type, remove a DECL_ORIGINAL_TYPE
        variant that has newdecl as TYPE_NAME if any.

2019-04-18  Jason Merrill  <jason@redhat.com>

        PR c++/87554 - ICE with extern template and reference member.
        * decl.c (cp_finish_decl): Don't set DECL_INITIAL of external vars.

2019-04-17  Jason Merrill  <jason@redhat.com>

        PR c++/90047 - ICE with enable_if alias template.
        * pt.c (tsubst_decl) [TYPE_DECL]: Don't put an erroneous decl in the
        hash table when we're in SFINAE context.

2019-04-17  Marek Polacek  <polacek@redhat.com>

        PR c++/90124 - bogus error with incomplete type in decltype.
        * typeck.c (build_class_member_access_expr): Check
        cp_unevaluated_operand.

2019-04-12  Jakub Jelinek  <jakub@redhat.com>

        PR c/89933
        * decl.c (duplicate_decls): When newdecl's type is its main variant,
        don't try to remove it from the variant list, but instead assert
        it has no variants.

2019-04-12  Martin Sebor  <msebor@redhat.com>

        PR c/88383
        PR c/89288
        * parser.c (cp_parser_has_attribute_expression): Handle assignment
        expressions.

2019-04-12  Jason Merrill  <jason@redhat.com>

        * call.c (null_member_pointer_value_p): Handle an empty CONSTRUCTOR
        of PMF type.

2019-04-12  Marek Polacek  <polacek@redhat.com>

        * except.c (build_noexcept_spec): Use build_converted_constant_bool_expr
        instead of perform_implicit_conversion_flags.

        PR c++/87603 - constexpr functions are no longer noexcept.
        * constexpr.c (is_sub_constant_expr): Remove unused function.
        * cp-tree.h (is_sub_constant_expr): Remove declaration.
        * except.c (check_noexcept_r): Don't consider a call to a constexpr
        function noexcept.

2019-04-11  Jakub Jelinek  <jakub@redhat.com>

        PR translation/90035
        * parser.h (struct cp_parser): Add
        type_definition_forbidden_message_arg member.
        * parser.c (cp_debug_parser): Print it.
        (cp_parser_check_type_definition): Pass
        parser->type_definition_forbidden_message_arg as second argument to
        error.
        (cp_parser_has_attribute_expression, cp_parser_sizeof_operand): Set
        parser->type_definition_forbidden_message_arg and use G_() with
        %qs for parser->type_definition_forbidden_message instead of
        building untranslatable message using concat.

2019-04-09  Jakub Jelinek  <jakub@redhat.com>

        PR translation/90011
        * typeck2.c (check_narrowing): Remove trailing space from diagnostics.

2019-04-08  Marek Polacek  <polacek@redhat.com>

        * typeck2.c (digest_init_r): Don't condition the object slicing warning
        on flag_checking.

2019-04-08  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/89914
        * semantics.c (trait_expr_value): Don't use TYPE_NOTHROW_P
        when maybe_instantiate_noexcept fails.
        (classtype_has_nothrow_assign_or_copy_p): Likewise.
        * method.c (implicitly_declare_fn): Avoid passing error_mark_node
        to build_exception_variant.

2019-04-05  Marek Polacek  <polacek@redhat.com>

        PR c++/87145 - bogus error converting class type in template arg list.
        * pt.c (convert_nontype_argument): Don't call
        build_converted_constant_expr if it could involve calling a conversion
        function with a instantiation-dependent constructor as its argument.

2019-04-05  Martin Sebor  <msebor@redhat.com>

        PR bootstrap/89980
        * decl.c (reshape_init_array_1): Avoid treating empty strings
        as zeros in array initializers.
        Use trivial_type_p () instead of TYPE_HAS_TRIVIAL_DFLT().

2019-04-04  Jason Merrill  <jason@redhat.com>

        PR c++/89948 - ICE with break in statement-expr.
        * constexpr.c (cxx_eval_statement_list): Jumping out of a
        statement-expr is non-constant.

2019-04-04  Jason Merrill  <jason@redhat.com>

        PR c++/89966 - error with non-type auto tparm.
        * pt.c (do_auto_deduction): Clear tf_partial.

2019-04-04  Jason Merrill  <jason@redhat.com>

        PR c++/86986 - ICE with TTP with parameter pack.
        * pt.c (coerce_template_parameter_pack): Only look at the type of a
        non-type parameter pack.
        (fixed_parameter_pack_p_1): Don't recurse into the type of a
        non-type parameter pack.
        (coerce_template_template_parms): Call add_outermost_template_args.

2019-04-04  Martin Sebor  <msebor@redhat.com>

        PR c++/89974
        PR c++/89878
        PR c++/89833
        PR c++/47488
        * decl.c (reshape_init_array_1): Strip trailing zero-initializers
        from arrays of trivial type and known size.
        * mangle.c (write_expression): Convert braced initializer lists
        to STRING_CSTs.
        (write_expression): Trim trailing zero-initializers from arrays
        of trivial type.
        (write_template_arg_literal): Mangle strings the same as braced
        initializer lists.

2019-04-03  Jason Merrill  <jason@redhat.com>

        PR c++/81866 - ICE with member template and default targ.
        * pt.c (tsubst_template_decl): Handle getting a type from
        retrieve_specialization.

        PR c++/86586 - -fcompare-debug=-Wsign-compare.
        * typeck.c (cp_build_binary_op): Don't fold for -Wsign-compare.

        PR c++/89331 - ICE with offsetof in incomplete class.
        * semantics.c (finish_offsetof): Handle error_mark_node.
        * typeck.c (build_class_member_access_expr): Call
        complete_type_or_maybe_complain before converting to base.

        PR c++/89917 - ICE with lambda in variadic mem-init.
        * pt.c (make_pack_expansion): Change type_pack_expansion_p to false.

2019-04-01  Jason Merrill  <jason@redhat.com>

        PR c++/86946 - ICE with function call in template argument.
        DR 1321
        * pt.c (iterative_hash_template_arg) [CALL_EXPR]: Use
        dependent_name.

2019-04-01  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/62207
        * pt.c (tsubst_copy): Deal with lookup_name not returing a variable.

2019-03-31  Marek Polacek  <polacek@redhat.com>

        PR c++/89852 - ICE with C++11 functional cast with { }.
        * constexpr.c (fold_non_dependent_expr_template): New static function
        broken out of...
        (fold_non_dependent_expr): ...here.
        (fold_non_dependent_init): New function.
        * cp-tree.h (fold_non_dependent_init): Declare.
        * typeck2.c (massage_init_elt): Call fold_non_dependent_init instead
        of fold_non_dependent_expr.  Don't call maybe_constant_init.

2019-03-30  Jason Merrill  <jason@redhat.com>

        PR c++/89744 - ICE with specialization of member class template.
        * pt.c (lookup_template_class_1): If the partial instantiation is
        explicitly specialized, adjust.
        (maybe_process_partial_specialization): Also adjust
        CLASSTYPE_TI_ARGS.

2019-03-29  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/89869
        * typeck.c: Include gimplify.h.
        (cp_build_modify_expr) <case COND_EXPR>: Unshare rhs before using it
        for second time.  Formatting fixes.

2019-03-29  Marek Polacek  <polacek@redhat.com>

        PR c++/89876 - ICE with deprecated conversion.
        * call.c (convert_like_real): Only give warnings with tf_warning.

2019-03-28  Marek Polacek  <polacek@redhat.com>

        PR c++/89612 - ICE with member friend template with noexcept.
        * pt.c (maybe_instantiate_noexcept): For function templates, use their
        template result (function decl).  Don't set up local specializations.
        Temporarily turn on processing_template_decl.  Update the template type
        too.

        PR c++/89836 - bool constant expression and explicit conversions.
        * call.c (build_converted_constant_expr_internal): New function,
        renamed from...
        (build_converted_constant_expr): ...this.  New.
        (build_converted_constant_bool_expr): New.
        * cp-tree.h (build_converted_constant_bool_expr): Declare.
        * decl.c (build_explicit_specifier): Call
        build_converted_constant_bool_expr.

2019-03-28  Jakub Jelinek  <jakub@redhat.com>

        PR c++/89785
        * constexpr.c (struct check_for_return_continue_data): New type.
        (check_for_return_continue): New function.
        (potential_constant_expression_1) <case SWITCH_STMT>: Walk
        SWITCH_STMT_BODY to find RETURN_EXPRs or CONTINUE_STMTs not nested
        in loop bodies and set *jump_target to that if found.

2019-03-27  Jason Merrill  <jason@redhat.com>

        PR c++/89831 - error with qualified-id in const member function.
        * semantics.c (finish_non_static_data_member): Use object cv-quals
        in scoped case, too.

        PR c++/89421 - ICE with lambda in template parameter list.
        * parser.c (cp_parser_lambda_expression): Also reject a lambda in a
        template parameter list before C++20.
        * pt.c (type_dependent_expression_p): True for LAMBDA_EXPR.
        * semantics.c (begin_class_definition): Restore error about defining
        non-lambda class in template parm list.

2019-03-26  Jason Merrill  <jason@redhat.com>

        PR c++/86932 - missed SFINAE with empty pack.
        * pt.c (coerce_template_parms): Don't add an empty pack if
        tf_partial.
        (fn_type_unification): Pass tf_partial to coerce_template_parms.

        PR c++/86429 - constexpr variable in lambda.
        PR c++/82643
        PR c++/87327
        * constexpr.c (cxx_eval_constant_expression): In a lambda function,
        try evaluating the captured variable directly.

2019-03-26  Jakub Jelinek  <jakub@redhat.com>

        PR c++/89796
        * semantics.c (finish_omp_atomic): Add warning_sentinel for
        -Wunused-value around finish_expr_stmt call.

2019-03-25  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84661
        PR c++/85013
        * parser.c (cp_parser_binary_expression): Don't call cp_fully_fold
        to undo the disabling of warnings.

2019-03-25  Jason Merrill  <jason@redhat.com>

        PR c++/87748 - substitution failure error with decltype.
        * pt.c (most_specialized_partial_spec): Clear
        processing_template_decl.

2019-03-25  Marek Polacek  <polacek@redhat.com>

        PR c++/89214 - ICE when initializing aggregates with bases.
        * typeck2.c (digest_init_r): Warn about object slicing instead of
        crashing.

        PR c++/89705 - ICE with reference binding with conversion function.
        * call.c (reference_binding): If the result of the conversion function
        is a prvalue of non-class type, use the cv-unqualified type.

2019-03-25  Nathan Sidwell  <nathan@acm.org>

        * lambda.c (maybe_add_lambda_conv_op): Don't add to comdat group.

2019-03-22  Jakub Jelinek  <jakub@redhat.com>

        PR c++/60702
        * cp-tree.h (get_tls_wrapper_fn): Remove declaration.
        (maybe_get_tls_wrapper_call): Declare.
        * decl2.c (get_tls_wrapper_fn): Make static.
        (maybe_get_tls_wrapper_call): New function.
        * typeck.c (build_class_member_access_expr): Handle accesses to TLS
        variables.
        * semantics.c (finish_qualified_id_expr): Likewise.
        (finish_id_expression_1): Use maybe_get_tls_wrapper_call.
        * pt.c (tsubst_copy_and_build): Likewise.

        PR c++/87481
        * constexpr.c (struct constexpr_ctx): Add constexpr_ops_count member.
        (cxx_eval_constant_expression): When not skipping, not constant class
        or location wrapper, increment *ctx->constexpr_ops_count and if it is
        above constexpr_loop_nest_limit, diagnose failure.
        (cxx_eval_outermost_constant_expr): Add constexpr_ops_count and
        initialize ctx.constexpr_ops_count to its address.
        (is_sub_constant_expr): Likewise.

2019-03-21  Jakub Jelinek  <jakub@redhat.com>

        PR c++/71446
        * call.c (filed_in_pset): Change pset from hash_set<tree> * to
        hash_set<tree, true> &, adjust uses accordingly.
        (build_aggr_conv): Change pset from hash_set<tree> *
        to hash_set<tree, true>.  Replace goto fail; with return NULL;,
        adjust pset uses.

        PR c++/89767
        * parser.c (cp_parser_lambda_introducer): Add ids and first_capture_id
        variables, check for duplicates in this function.
        * lambda.c (add_capture): Don't check for duplicates nor use
        IDENTIFIER_MARKED.
        (register_capture_members): Don't clear IDENTIFIER_MARKED here.

2019-03-21  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/89571
        * method.c (after_nsdmi_defaulted_late_checks): Avoid passing
        error_mark_node to comp_except_specs.

2019-03-20  Jason Merrill  <jason@redhat.com>

        PR c++/87480 - decltype of member access in default template arg
        * pt.c (type_unification_real): Accept a dependent result in
        template context.

2019-03-19  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/89688
        * typeck2.c (store_init_value): Call braced_lists_to_string for more
        kinds of initializers.

2019-03-18  Jason Merrill  <jason@redhat.com>

        PR c++/89630 - ICE with dependent using-decl as template arg.
        * tree.c (cp_tree_equal): Always return false for USING_DECL.

        PR c++/89761 - ICE with sizeof... in pack expansion.
        * pt.c (argument_pack_element_is_expansion_p): Handle
        ARGUMENT_PACK_SELECT.

        PR c++/89640 - GNU attributes on lambda.
        * parser.c (cp_parser_lambda_declarator_opt): Allow GNU attributes.

        PR c++/89682 - wrong access error in default argument.
        * pt.c (tsubst_default_argument): Don't defer access checks.

2019-03-18  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/85014
        * semantics.c (finish_non_static_data_member): Check return value
        of context_for_name_lookup and immediately return error_mark_node
        if isn't a type.

2019-03-17  Jason Merrill  <jason@redhat.com>

        PR c++/89571 - ICE with ill-formed noexcept on constructor.
        * pt.c (maybe_instantiate_noexcept): Only return false if defaulted.
        (regenerate_decl_from_template): Use it for noexcept-specs.

2019-03-14  Jason Merrill  <jason@redhat.com>

        * parser.c (cp_parser_decl_specifier_seq): Support C++20
        concept-definition syntax without 'bool'.

2019-03-14  Jakub Jelinek  <jakub@redhat.com>

        PR c++/89512
        * semantics.c (finish_qualified_id_expr): Reject variable templates.

        PR c++/89652
        * constexpr.c (struct constexpr_ctx): Change save_exprs type from
        hash_set<tree> to vec<tree>.
        (cxx_eval_call_expression): Adjust for save_exprs being a vec instead
        of hash_set.
        (cxx_eval_loop_expr): Likewise.  Truncate the vector after each
        removal of SAVE_EXPRs from values.
        (cxx_eval_constant_expression) <case SAVE_EXPR>: Call safe_push
        method on save_exprs instead of add.

2019-03-13  Jason Merrill  <jason@redhat.com>

        PR c++/86521 - C++17 copy elision in initialization by constructor.
        * call.c (joust_maybe_elide_copy): New.
        (joust): Call it.

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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