[gcc.git] / gcc / cp / ChangeLog

2017-03-31  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79572
        * cp-gimplify.c (cp_genericize_r): Sanitize INTEGER_CSTs with
        REFERENCE_TYPE.  Adjust ubsan_maybe_instrument_reference caller
        for NOP_EXPR to REFERENCE_TYPE.

        PR libstdc++/80251
        * cp-tree.h (enum cp_trait_kind): Add CPTK_IS_AGGREGATE.
        * cxx-pretty-print.c (pp_cxx_trait_expression): Handle
        CPTK_IS_AGGREGATE.
        * semantics.c (trait_expr_value): Handle CPTK_IS_AGGREGATE.
        Remove extraneous parens.
        (finish_trait_expr): Handle CPTK_IS_AGGREGATE.
        * parser.c (cp_parser_primary_expression): Handle RID_IS_AGGREGATE.
        (cp_parser_trait_expr): Likewise.

2017-03-27  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/80162
        * cp-tree.h (cxx_mark_addressable): Add array_ref_p argument.
        * typeck.c (cxx_mark_addressable): Likewise.  Look through
        VIEW_CONVERT_EXPR unless array_ref_p and VCE is from VECTOR_TYPE
        to ARRAY_TYPE.
        (cp_build_array_ref): Pass true as array_ref_p to cxx_mark_addressable.

2017-03-24  Jason Merrill  <jason@redhat.com>

        PR c++/77339 - ICE with invalid use of alias template.
        * pt.c (lookup_template_class_1): Don't try to enter the scope of an
        alias template.

2017-03-24  Marek Polacek  <polacek@redhat.com>

        PR c++/80119
        * cp-gimplify.c (cp_fold): Strip CLEANUP_POINT_EXPR if the expression
        doesn't have side effects.

2017-03-23  Jason Merrill  <jason@redhat.com>

        PR c++/80150 - ICE with overloaded variadic deduction.
        * pt.c (try_one_overload): Remove asserts.

        PR c++/77563 - missing ambiguous conversion error.
        * call.c (convert_like_real): Use LOOKUP_IMPLICIT.

2017-03-23  Marek Polacek  <polacek@redhat.com>

        * cp-tree.h: Remove a C_RID_YYCODE reference.

2017-03-22  Jakub Jelinek  <jakub@redhat.com>

        PR c++/80141
        * semantics.c (finish_omp_clause) <case OMP_CLAUSE_SIMDLEN,
        case OMP_CLAUSE_ALIGNED>: Call maybe_constant_value only when not
        processing_template_decl.

2017-03-21  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/77752
        * name-lookup.c (pushtag_1): Add check for bogus, non template,
        std::initializer_list.

2017-03-21  Jakub Jelinek  <jakub@redhat.com>

        PR c++/35878
        * init.c (std_placement_new_fn_p, build_new_1): Formatting fixes.

2017-03-21  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR c++/35878
        * init.c (std_placement_new_fn_p): New.
        (build_new_1): Call it.

2017-03-20  Jason Merrill  <jason@redhat.com>

        PR c++/80096 - ICE with C++17 non-type auto.
        * pt.c (tsubst): Delay tsubst of type of template non-type
        parameter.

        PR c++/79519 - ICE with deleted template friend.
        * decl.c (grokdeclarator): Complain about misplaced function
        definition using =, as well.

        PR c++/79640 - infinite recursion with generic lambda.
        * pt.c (tsubst_copy) [VAR_DECL]: Register the dummy instantiation
        before substituting its initializer.

2017-03-20  Marek Polacek  <polacek@redhat.com>
            Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/80059 - ICE with noexcept and __transaction_atomic
        * except.c (build_must_not_throw_expr): Call
        instantiate_non_dependent_expr.

2017-03-19  Jason Merrill  <jason@redhat.com>

        PR c++/80084 - wrong C++17 decomposition by reference of parameter.
        * decl.c (cp_finish_decomp): Don't pull out the DECL_INITIAL of a
        reference decomposition.

        PR c++/80077 - error with constexpr and -fno-elide-constructors.
        * constexpr.c (cxx_eval_call_expression): Set ctx->call while
        expanding trivial constructor.

2017-03-17  Jason Merrill  <jason@redhat.com>

        PR c++/78345 - ICE initializing array from lambda.
        * init.c (build_aggr_init): Check array initializer.
        (build_vec_init): Check the type of a CONSTRUCTOR.

        PR c++/80073 - C++17 ICE with virtual base.
        * decl.c (xref_basetypes): Also check for indirect vbases.

2017-03-16  Jason Merrill  <jason@redhat.com>

        * decl.c (start_enum): std::byte aliases anything.

        PR c++/79797
        * constexpr.c (lookup_placeholder): Tweak.

2017-03-15  Jason Merrill  <jason@redhat.com>

        PR c++/80043 - ICE with -fpermissive
        * typeck.c (convert_for_assignment): Handle instantiate_type
        not giving an error.

2017-03-14  Nathan Sidwell  <nathan@acm.org>

        PR c++/79393 DR 1658 workaround
        * method.c (synthesized_method_base_walk): Inihibit abstract class
        virtual base access check here.
        (synthesized_method_walk): Not here.

2017-03-13  Nathan Sidwell  <nathan@acm.org>

        PR c++/79393 DR 1658 workaround
        * method.c (synthesized_method_walk): Check vbases of abstract
        classes for dtor walk.

2017-03-10  David Malcolm  <dmalcolm@redhat.com>

        PR translation/79848
        * decl.c (grokfndecl): Simplify uses of "%<%s%>" to "%qs".

2017-03-10  Jason Merrill  <jason@redhat.com>

        PR c++/79960 - alias templates and partial ordering
        * pt.c (comp_template_args): Add partial_order parm.
        (template_args_equal): Likewise.
        (comp_template_args_porder): New.
        (get_partial_spec_bindings): Use it.

2017-03-10  Marek Polacek  <polacek@redhat.com>

        PR c++/79967
        * decl.c (grokdeclarator): Check ATTRLIST before dereferencing it.

2017-03-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79899
        * optimize.c (maybe_thunk_body): Don't ICE if fns[0] is NULL.
        Use XALLOCAVEC macro.

        PR c++/79896
        * decl.c (finish_enum_value_list): If value is error_mark_node,
        don't copy it and change its type.
        * init.c (constant_value_1): Return error_mark_node if DECL_INITIAL
        of CONST_DECL is error_mark_node.

2017-03-09  Marek Polacek  <polacek@redhat.com>

        PR c++/79900 - ICE in strip_typedefs
        * tree.c (strip_typedefs): Skip the attribute handling if T is
        a variant type which hasn't been updated yet.

        PR c++/79687 - wrong code with pointer-to-member
        * init.c (constant_value_1): Break if the variable has a dynamic
        initializer.

2017-03-08  Jason Merrill  <jason@redhat.com>

        PR c++/79797 - ICE with self-reference in array DMI.
        * constexpr.c (lookup_placeholder): Split out...
        (cxx_eval_constant_expression): ...from here.

2017-03-07  Jakub Jelinek  <jakub@redhat.com>

        PR c/79834
        * parser.c (cp_parser_omp_cancellation_point,
        cp_parser_omp_target_enter_data, cp_parser_omp_target_exit_data,
        cp_parser_omp_target_update): Change "may only be used in compound
        statements" diagnostics, such that the same translatable string is
        used for all pragmas.
        (cp_parser_pragma): Likewise.  Use error_at instead of
        cp_parser_error for that diagnostics.

2017-03-06  Marek Polacek  <polacek@redhat.com>

        PR c++/79796 - ICE with NSDMI and this pointer
        * call.c (build_over_call): Handle NSDMI with a 'this' by calling
        replace_placeholders.

2017-03-06  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79822
        * constexpr.c (cxx_eval_statement_list): Treat empty ({ }) like
        ({ (void) 0; }).

2017-03-06  Jason Merrill  <jason@redhat.com>

        Revert "Allow deduction guides to look into primary template."
        * cp-tree.h, parser.c, pt.c, search.c: Revert.

2017-03-05  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/70266
        * except.c (build_must_not_throw_expr): Perform the implicit
        conversions on the condition.

2017-03-03  Jason Merrill  <jason@redhat.com>

        * mangle.c (mangle_decl): Check -Wnoexcept-type instead of
        -Wc++1z-compat.

        Core issues 2273 and 2277
        * call.c (joust): Adjust using-declaration tiebreaker to handle
        the intermediate base case.
        * method.c (strip_inheriting_ctors): Just return the argument if
        !flag_new_inheriting_ctors.

2017-03-03  Richard Biener  <rguenther@suse.de>

        PR c++/79825
        * cp-gimplify.c (simple_empty_class_p): Handle EMPTY_CLASS_EXPR.

2017-03-03  Marek Polacek  <polacek@redhat.com>

        PR c++/79791
        * typeck.c (string_conv_p): In C++11, always call pedwarn with
        OPT_Wwrite_strings.

2017-03-02  Jason Merrill  <jason@redhat.com>

        Update overload resolution with deduction guides.
        * pt.c (do_class_deduction): Always build the copy guide.
        (copy_guide_p, template_guide_p): New.
        (build_deduction_guide): Remember the original constructor.
        * call.c (joust): Prefer the copy guide and non-template guides.

        Allow deduction guides to look into primary template.
        * cp-tree.h (struct saved_scope): Add deduction_guide_type.
        (struct cp_decl_specifier_seq): Add constructor_p.
        * parser.c (cp_parser_decl_specifier_seq): Set constructor_p.
        (cp_parser_init_declarator): Check it.  Set ctor_dtor_or_conv_p.
        Clear deduction_guide_type.  Don't handle deduction guide names.
        (cp_parser_declarator): Don't clear ctor_dtor_or_conv_p.
        (cp_parser_direct_declarator): Likewise.  Handle deduction guides.
        (cp_parser_member_declaration, cp_parser_cache_defarg)
        (cp_parser_objc_class_ivars): Set ctor_dtor_or_conv_p.
        * pt.c (tsubst_copy, tsubst_copy_and_build): Revert last change.
        (build_deduction_guide): Set deduction_guide_type.
        (dependent_scope_p): Check deduction_guide_type.
        * search.c (lookup_member): Likewise.

2017-03-02  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79782
        * init.c (mark_exp_read_r): New function.
        (emit_mem_initializers): Use cp_walk_tree with mark_exp_read_r on
        whole arguments instead of plain mark_exp_read on TREE_LIST values.

2017-03-01  Jason Merrill  <jason@redhat.com>

        Class template argument deduction in new-expression
        * init.c (build_new): Handle deduction from no initializer.
        * parser.c (cp_parser_new_expression): Don't require a single
        expression for class template deduction.
        * typeck2.c (cxx_incomplete_type_diagnostic): Fix diagnostic for
        class template placeholder.
        * pt.c (tsubst_copy) [TEMPLATE_DECL]: Handle dependent context.
        (tsubst_copy_and_build) [TEMPLATE_ID_EXPR]: Handle SCOPE_REF.
        (redeclare_class_template): Set TEMPLATE_TYPE_PARM_FOR_CLASS.

2017-03-01  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79746
        * init.c (emit_mem_initializers): When not constructing vbases of
        abstract classes, mark arguments as read for
        -Wunused-but-set-parameter.

2017-02-28  Jason Merrill  <jason@redhat.com>

        Class template argument deduction refinements
        * call.c (joust): Move deduction guide tiebreaker down.
        * decl.c (start_decl_1, cp_finish_decl, grokdeclarator): Allow class
        deduction with no initializer.
        * pt.c (build_deduction_guide): Handle implicit default/copy ctor.
        (do_class_deduction): Use that rather than special case.
        (do_auto_deduction): Handle null initializer.

2017-02-28  Jakub Jelinek  <jakub@redhat.com>

        * decl.c (find_decomp_class_base): Use cond ? G_("...") : G_("...")
        instead of just cond ? "..." : "...".
        (grokdeclarator): Likewise.
        (build_enumerator): Likewise.
        * init.c (build_new_1): Likewise.
        * call.c (build_new_method_call_1): Likewise.
        * parser.c: Include intl.h.
        (cp_parser_oacc_enter_exit_data): Use %s and ternary operator only for
        "enter"/"exit" keyword.
        (cp_finalize_oacc_routine): Don't use %s to supply portions of the
        message.

2017-02-27  Jason Merrill  <jason@redhat.com>

        PR c++/71568 - SFINAE forming pointer to member function
        * init.c (build_offset_ref): Check the return value of
        perform_or_defer_access_check.

2017-02-27  Marek Polacek  <polacek@redhat.com>

        * decl.c (expand_static_init): Add missing } in a comment.

2017-02-27  Volker Reichelt  <v.reichelt@netcologne.de>

        * init.c: Include intl.h.
        (build_new_1): Move message strings into pedwarn to make them
        -Wformat-security friendly. Mark string for translation.
        * pt.c (tsubst_copy_and_build): Mark string for translation.
        Make the pointer const.
        * semantics.c (finish_id_expression): Mark strings for translation.

2017-02-25  Jakub Jelinek  <jakub@redhat.com>

        * call.c (build_op_delete_call): Make msg1 and msg2 const.

2017-02-24  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79588
        * call.c (build_over_call): Call check_function_arguments even for
        -Wrestrict, adjust check_function_arguments caller.
        * parser.c (cp_parser_postfix_expression): Don't handle -Wrestrict
        here.
        * typeck.c (cp_build_function_call_vec): Adjust
        check_function_arguments caller.

2017-02-24  Marek Polacek  <polacek@redhat.com>

        PR translation/79705
        * decl.c (check_redeclaration_exception_specification): Mark a string
        for translation.  Make the pointer const.

2017-02-23  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/79361
        * pt.c (register_specialization): Check duplicate_decls return value
        for error_mark_node and pass it back.

2017-02-22  Jason Merrill  <jason@redhat.com>

        PR c++/79679 - missing destructor for argument
        * call.c (build_over_call): Don't pass tf_no_cleanup to argument
        conversions.

        * pt.c (do_class_deduction): Handle 0 argument case.

2017-02-22  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79664
        * parser.c (cp_parser_omp_teams, cp_parser_omp_target): Use
        SET_EXPR_LOCATION on OMP_TARGET/OMP_TEAMS tree.
        * constexpr.c (potential_constant_expression_1): Handle
        OMP_*, OACC_* and CILK_* trees.  Use error_at with
        EXPR_LOC_OR_LOC (t, input_location) computed early
        instead of error, or error_at with location_of (t).

2017-02-22  Marek Polacek  <polacek@redhat.com>

        PR c++/79653
        * parser.c (cp_parser_std_attribute_spec): Don't build the attribute
        if the alignas expression is erroneous.
        * pt.c (tsubst_attribute): If tsubst_pack_expansion fails, return
        error_mark_node.

        PR c++/79657
        * semantics.c (finish_underlying_type): Bail out for incomplete enums.

2017-02-21  Jason Merrill  <jason@redhat.com>

        PR c++/50308 - wrong deprecated warning with ADL
        PR c++/17729 - duplicate deprecated warning
        * semantics.c (finish_id_expression): Only call mark_used on a
        function if we aren't building a call.

        PR c++/41727 - ICE with partial spec of partial instantiation
        * pt.c (process_partial_specialization): For now, don't check more
        specialized if there is more than one level of args.

2017-02-21  Marek Polacek  <polacek@redhat.com>

        PR c++/79535
        * cp-tree.h (maybe_reject_flexarray_init): Declare.
        * init.c (maybe_reject_flexarray_init): No longer static.
        Add check for current_function_decl.
        * parser.c (cp_parser_late_parse_one_default_arg): Reject
        a default mem-initializer for a flexible array.

2017-02-21  Jakub Jelinek  <jakub@redhat.com>
            Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/79654
        * decl.c (cp_finish_decomp): Don't set decl's type to error_mark_node
        on error.
        * pt.c (tsubst_decomp_names): Return error_mark_node if the first
        decl after the decomposition artificial decl has error_mark_node.
        * decl2.c (prune_vars_needing_no_initialization): Use error_operand_p
        instead of just == error_mark_node comparison.

2017-02-21  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/79589
        * decl.c: Include gimplify.h.
        (cp_finish_decomp): Make sure there is no sharing of trees
        in between DECL_VALUE_EXPR of decomposition decls.

        PR c++/79655
        * constexpr.c (cxx_eval_array_reference): Diagnose negative subscript.

        PR c++/79639
        * constexpr.c (cxx_eval_store_expression): If *valp is a PTRMEM_CST,
        call cplus_expand_constant on it first.

2017-02-19  Jason Merrill  <jason@redhat.com>

        PR c++/78139 - destructor needed by new-expression
        * call.c (build_special_member_call): Use tf_no_cleanup.

        PR c++/78282 - auto template and pack expansion
        * pt.c (find_parameter_packs_r): Don't walk into the type of
        templates other than template template-parameters.

        PR c++/79606 - ICE with this->base_member in NSDMI
        * class.c (build_base_path): Check processing_template_decl.

        PR c++/79607 - ICE with T{} initializer
        * decl.c (type_dependent_init_p): Check the type of a CONSTRUCTOR.

        PR c++/79566 - elaborated-type-specifier in range for
        * parser.c (cp_parser_simple_declaration): Fix check for type
        definition.

        PR c++/79400 - confusing suggestion of 'noexcept'
        * parser.c (cp_parser_exception_specification_opt): Remove
        suggestion for deprecated dynamic exception-specification.

        PR c++/79470 - partial ordering with reference parameters
        * pt.c (unify) [INDIRECT_REF]: Handle pack expansions.

        PR c++/79500 - ICE with non-template deduction guide
        * pt.c (do_class_deduction): Use STRIP_TEMPLATE rather than
        DECL_TEMPLATE_RESULT.

        PR c++/79580 - ICE with compound literal
        * parser.c (cp_parser_class_head): If we're in the middle of an
        expression, use ts_within_enclosing_non_class.

        PR c++/79503 - inherited ctor taking base class
        * call.c (add_function_candidate): Also check that
        DECL_INHERITED_CTOR_BASE is reference-related to the parameter type.

2017-02-19  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/79380
        * typeck.c (cxx_alignas_expr): Reject a non-integral alignas
        argument.

2017-02-19  Eric Fiselier  <eric@efcs.ca>
            Jonathan Wakely  <jwakely@redhat.com>

        PR c++/69523
        * parser.c (cp_parser_unqualified_id): Use OPT_Wliteral_suffix to
        control warning about literal suffix identifiers without a leading
        underscore.

2017-02-17  Jason Merrill  <jason@redhat.com>

        PR c++/79508 - lookup error with member template
        * parser.c (cp_parser_template_name): Clear
        parser->context->object_type if we aren't doing lookup.

        PR c++/78690 - ICE with using and global type with same name
        * pt.c (type_dependent_object_expression_p): True for
        IDENTIFIER_NODE.

        PR c++/79549 - C++17 ICE with non-type auto template parameter pack
        * pt.c (convert_template_argument): Just return an auto arg pack.
        (tsubst_template_args): Don't tsubst an auto pack type.

        PR c++/79556 - C++17 ICE with non-type auto
        * pt.c (do_auto_deduction): Don't try to deduce from null type.

        PR c++/79533 - C++17 ICE with temporary cast to reference
        * call.c (build_over_call): Conversion to a reference prevents copy
        elision.

2017-02-16  Jakub Jelinek  <jakub@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/79502 - lost nodiscard attribute
        * pt.c (apply_late_template_attributes): Do apply non-dependent
        attributes to types.

2017-02-16  Jason Merrill  <jason@redhat.com>

        PR c++/78572 - ICE with self-modifying array initializer
        * constexpr.c (cxx_eval_store_expression): The object we're
        initializing is outside the constant-expression.
        (cxx_eval_call_expression): Set ctx->call.

        PR c++/79050 - ICE with undeduced auto and LTO
        * decl.c (poplevel): Remove undeduced auto decls.

2017-02-16  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79512
        * parser.c (cp_parser_omp_target): For -fopenmp-simd
        ignore #pragma omp target even when not followed by identifier.

2017-02-15  Jason Merrill  <jason@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR c++/79464 - ICE in IPA with omitted constructor parms
        * class.c (build_clone): Also omit parms from TYPE_ARG_TYPES.
        (adjust_clone_args): Adjust.
        (add_method): Remember omitted parms.
        * call.c (add_function_candidate): Likewise.
        * mangle.c (write_method_parms): Likewise.
        * method.c (ctor_omit_inherited_parms): Return false if there are no
        parms to omit.

2017-02-15  Martin Sebor  <msebor@redhat.com>

        PR c++/79363
        * init.c (maybe_reject_flexarray_init): New function.
        (perform_member_init): Call it.

2017-02-15  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79301
        * parser.c (cp_parser_std_attribute): Don't pedwarn about
        [[deprecated]] with -std=c++11 and [[fallthrough]] with
        -std=c++11 and -std=c++14.

        PR c++/79288
        * decl.c (grokdeclarator): For static data members, handle thread_p
        only after handling inline.

2017-02-14  Marek Polacek  <polacek@redhat.com>

        PR c++/79420
        PR c++/79463
        * parser.c (cp_parser_postfix_dot_deref_expression): Avoid
        clobbering if the postfix expression isn't an EXPR_P.

2017-02-13  Jason Merrill  <jason@redhat.com>

        PR c++/79461 - ICE with lambda in constexpr constructor
        * constexpr.c (build_data_member_initialization): Ignore
        initialization of a local variable.

2017-02-13  Jakub Jelinek  <jakub@redhat.com>

        * init.c (warn_placement_new_too_small): Add missing space in
        diagnostics.
        * parser.c (cp_parser_oacc_declare): Likewise.
        * mangle.c (maybe_check_abi_tags): Likewise.

        PR c++/79232
        * typeck.c (cp_build_modify_expr): Handle properly COMPOUND_EXPRs
        on lhs that have {PRE{DEC,INC}REMENT,MODIFY,MIN,MAX,COND}_EXPR
        in the rightmost operand.

2017-02-13  Nathan Sidwell  <nathan@acm.org>

        PR c++/79296 - ICE mangling localized template instantiation
        * decl2.c (determine_visibility): Use template fn context for
        local class instantiations.

2017-02-11  Jason Merrill  <jason@redhat.com>

        PR c++/77659 - ICE with new and C++14 aggregate NSDMI
        * init.c (build_new): Make backups of any CONSTRUCTORs in init.
        (build_new_1): Use replace_placeholders.
        * tree.c (replace_placeholders_t): Also track whether we've seen a
        placeholder.
        (replace_placeholders, replace_placeholders_r): Adjust.
        * cp-tree.h: Adjust.

        PR c++/77790 - ICE with auto function in C++11 mode
        * decl.c (undeduced_auto_decl): Remove C++14 limitation.
        (require_deduced_type): Add complain parm, return bool.
        * cp-tree.h: Adjust.
        * decl2.c (mark_used): Use require_deduced_type.

2017-02-10  Jason Merrill  <jason@redhat.com>

        PR c++/78908 - template ops and bitfields
        * tree.c (build_min_non_dep): Use unlowered_expr_type.

        PR c++/78897 - constexpr union
        * constexpr.c (cxx_eval_store_expression): A store to a union member
        erases a previous store to another member.

        PR c++/71285 - member of fold-expression
        * semantics.c (finish_unary_fold_expr)
        (finish_binary_fold_expr): Use null type for fold-expressions.

        PR c++/79401 - protected inherited constructor
        * call.c (enforce_access): For inheriting constructor, find a base
        binfo in the path we already have.

2017-02-10  Marek Polacek  <polacek@redhat.com>

        PR c++/79435
        * pt.c (type_dependent_expression_p): Check if the expression type
        is null.

        PR c++/79184
        * cvt.c (ocp_convert): Add a sentinel against -Wint-in-bool-context
        if warnings shouldn't be given.

2017-02-10  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/71737
        * pt.c (tsubst_decl): Don't try to preserve a typedef that names
        an error_mark_node as type.

2017-02-09  Jakub Jelinek  <jakub@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/79143
        * pt.c (instantiate_class_template_1): Copy CLASSTYPE_NON_AGGREGATE
        from pattern to type.

2017-02-09  Jason Merrill  <jason@redhat.com>

        PR c++/79316 - default argument in deduction guide
        PR c++/79350 - explicit deduction guide
        * parser.c (cp_parser_constructor_declarator_p)
        (cp_parser_direct_declarator): Parse deduction guides more like
        constructors.
        * cp-tree.h (enum special_function_kind): Add sfk_deduction_guide.
        * tree.c (special_function_p): Return it.
        * decl.c (check_special_function_return_type): Handle it.
        (grokdeclarator, grokfndecl): Adjust.
        (cp_finish_decl): Pass flags to do_auto_deduction.
        * error.c (dump_decl_name): Use TFF_UNQUALIFIED_NAME.
        * pt.c (dguide_name_p): Take a const_tree.
        (do_class_deduction): Handle explicit.
        (do_auto_deduction): Pass flags through.
        (build_deduction_guide): Copy explicit flag.

2017-02-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79429
        * parser.c (cp_parser_omp_ordered): Don't check for non-pragma_stmt
        non-pragma_compound context here.
        (cp_parser_omp_target): Likewise.
        (cp_parser_pragma): Don't call push_omp_privatization_clauses and
        parsing for ordered and target omp pragmas in non-pragma_stmt
        non-pragma_compound contexts.

        PR c/79431
        * parser.c (cp_parser_oacc_declare): Formatting fix.
        (cp_parser_omp_declare_target): Don't invoke symtab_node::get on
        automatic variables.

2016-02-09  Nathan Sidwell  <nathan@codesourcery.com>
            Chung-Lin Tang  <cltang@codesourcery.com>

        * parser.c (cp_parser_oacc_clause_tile): Disallow collapse.  Fix
        parsing.  Parse constant expression. Remove semantic checking.
        (cp_parser_omp_clause_collapse): Disallow tile.
        (cp_parser_omp_for_loop): Deal with tile clause.  Don't emit a parse
        error about missing for after already emitting one.  Use more
        conventional for idiom for unbounded loop.
        * pt.c (tsubst_omp_clauses): Handle OMP_CLAUSE_TILE.
        * semantics.c (finish_omp_clauses): Correct TILE semantic check.
        (finish_omp_for): Deal with tile clause.

2017-02-07  Nathan Sidwell  <nathan@acm.org>

        * method.c (synthesized_method_base_walk): New.  Broken out of ...
        (synthesized_method_walk): ... here.  Call it.  Cleanup
        initializations.

2017-02-07  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/79360
        * typeck2.c (process_init_constructor_union): Consider only
        FIELD_DECLs when looking for an NSDMI.

2017-02-06  Jason Merrill  <jason@redhat.com>

        PR c++/71193 - incomplete types in templates
        * parser.c (cp_parser_postfix_dot_deref_expression): In a template
        handle incomplete type by pedwarning and then treating as dependent.

2017-02-06  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79379
        * constexpr.c (cxx_eval_constant_expression): Handle ANNOTATE_EXPR.
        (potential_constant_expression_1): Likewise.

        PR c++/79377
        * tree.c (build_min_non_dep_op_overload): For POST{INC,DEC}REMENT_EXPR
        allow one fewer than expected arguments if flag_permissive.

        PR c++/79372
        * decl.c (cp_finish_decomp): On error set decl type to error_mark_node.
        * pt.c (tsubst_expr): Don't call tsubst_decomp_names on decompositions
        with error_mark_node type.

2017-02-03  Jason Merrill  <jason@redhat.com>

        PR c++/78689 - ICE on constructor with label
        * optimize.c (maybe_clone_body): Replace omitted parameters with
        null lvalues.
        * class.c (build_clone): Fix logic for omitting inherited parms.

        PR c++/12245 - excessive memory use
        * constexpr.c (maybe_constant_value): Fold maybe_constant_value_1
        back in.  Don't cache constants.
        (maybe_constant_init): Don't cache constants.

        PR c++/79294 - ICE with invalid template argument
        * pt.c (convert_nontype_argument_function): Check value-dependence.
        (convert_nontype_argument): Don't check it here for function ptrs.

2017-02-02  Richard Biener  <rguenther@suse.de>

        PR cp/14179
        * cp-gimplify.c (cp_fold): When folding a CONSTRUCTOR copy
        it lazily on the first changed element only and copy it
        fully upfront, only storing changed elements.

2017-02-02  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/69637
        * decl2.c (grokbitfield): In case of error don't set-up DECL_INITIAL
        to the width.

2017-01-31  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79304
        * error.c (dump_expr) <case COMPONENT_REF>: Don't print .
        after ARROW_EXPR.

2017-01-31  David Malcolm  <dmalcolm@redhat.com>

        PR c++/79298
        * name-lookup.c (suggest_alternative_in_explicit_scope): Resolve
        any namespace aliases.

2017-01-31  Nathan Sidwell  <nathan@acm.org>

        PR c++/79290
        * typeck.c (build_ptrmemfunc_access_expr): Set TREE_NO_WARNING.

        PR c++/67273
        PR c++/79253
        * pt.c: (instantiate_decl): Push to top level when current
        function scope doesn't match.  Only push lmabda scope stack when
        pushing to top.

        * cp-tree.h (instantiate_decl): Make defer_ok bool.
        * pt.c: Fix instantiate_decl calls to pass true/false not 0/1
        (instantiate_decl): Simplify and reorder state saving and restoration.

        PR c++/79264
        * lambda.c (maybe_generic_this_capture): Deal with template-id-exprs.
        * semantics.c (finish_member_declaration): Assert class is being
        defined.

2017-01-30  Alexandre Oliva <aoliva@redhat.com>

        Introduce C++ support in libcc1.
        * cp-tree.h (struct lang_identifier): Add oracle_looked_up.
        (ansi_opname): Rename to...
        (cp_operator_id): ... this.  Adjust all callers.
        (ansi_assopname): Rename to...
        (cp_assignment_operator_id): ... this.  Adjust all callers.
        (cp_literal_operator_id): Declare.
        (set_global_friend): Declare.
        (is_global_friend): Declare.
        (enum cp_oracle_request): New type.
        (cp_binding_oracle_function): New type.
        (cp_binding_oracle): Declare.
        (cp_finish_injected_record_type): Declare.
        * friend.c (global_friend): New var.
        (set_global_friend): New fn.
        (is_global_friend): New fn.
        (is_friend): Call is_global_friend.
        * name-lookup.c (cp_binding_oracle): New var.
        (query_oracle): New fn.
        (qualified_lookup_using_namespace): Call query_oracle.
        (lookup_name_real_1): Likewise.
        * parser.c (cp_literal_operator_id): Drop static.
        * search.c (friend_accessible_p): Call is_global_friend.
        * semantics.c (is_this_parameter): Accept a variable if the
        binding oracle is enabled.

2017-01-27  Jason Merrill  <jason@redhat.com>

        PR c++/78771 - ICE with inherited constructor.
        * call.c (build_over_call): Call deduce_inheriting_ctor here.
        * pt.c (tsubst_decl): Not here.
        * class.c (add_method): Or here.
        * method.c (deduce_inheriting_ctor): Handle clones.
        (implicitly_declare_fn): Don't deduce inheriting ctors yet.

2017-01-27  Adam Butcher  <adam@jessamine.co.uk>

        PR c++/64382
        * cp/parser.c (parsing_default_capturing_generic_lambda_in_template):
        New function.
        * cp/cp-tree.h: Declare it.
        * cp/semantics.c (finish_id_expression): Resolve names within a default
        capturing generic lambda defined within a template prior to
        instantiation to allow for captures to be added to the closure type.

2017-01-26  Jakub Jelinek  <jakub@redhat.com>

        PR c++/68727
        * cp-tree.def (OFFSETOF_EXPR): Bump number of operands to 2.
        * cp-tree.h (finish_offsetof): Add OBJECT_PTR argument.
        * parser.c (cp_parser_builtin_offsetof): Pass result of
        build_static_cast of null_pointer_node to finish_offsetof.
        * semantics.c (finish_offsetof): Add OBJECT_PTR argument, use
        it for -Winvalid-offsetof pedwarn instead of trying to guess
        original offsetof type from EXPR.  Save OBJECT_PTR as a new
        second operand to OFFSETOF_EXPR.
        * pt.c (tsubst_copy_and_build) <case OFFSETOF_EXPR>: Adjust
        finish_offsetof caller, pass the second operand of OFFSETOF_EXPR
        as OBJECT_PTR.

2017-01-26  Jason Merrill  <jason@redhat.com>

        * name-lookup.c (parse_using_directive): Deprecate strong using.

        PR c++/79176 - lambda ICE with -flto -Os
        * decl2.c (vague_linkage_p): Handle decloned 'tors.
        * tree.c (decl_linkage): Likewise.

2017-01-25  Martin Sebor  <msebor@redhat.com>

        * decl.c (grokdeclarator): Fix a typo in a comment.

2017-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR c++/78896
        * decl.c (cp_finish_decomp): Disallow memberwise decomposition of
        lambda expressions.

        PR c++/77914
        * parser.c (cp_parser_lambda_declarator_opt): Pedwarn with
        OPT_Wpedantic on lambda templates for -std=c++14 and higher.

2017-01-25  Maxim Ostapenko  <m.ostapenko@samsung.com>

        PR lto/79061
        * decl.c (cxx_init_decl_processing): Pass main_input_filename
        to build_translation_unit_decl.

2017-01-24  Jakub Jelinek  <jakub@redhat.com>

        PR c++/79205
        * cp-gimplify.c (cp_genericize_r): Add result of
        convert_from_reference on invisiref parm to p_set.

2017-01-24  Nathan Sidwell  <nathan@acm.org>

        PR c++/78469 - defaulted ctor and inaccessible dtor
        * cp-tree.h (tsubst_flags): Add tf_no_cleanup.
        * init.c (build_new_1): Pass tf_no_cleanup to build_value_init.
        * tree.c (build_target_expr): Check tf_no_cleanup.

        PR c++/79118 - anon-members and constexpr
        * constexpr.c (cx_check_missing_mem_inits): Caller passes type not
        ctor decl.  Recursively check anonymous members.
        (register_constexpr_fundef): Adjust cx_check_missing_mem_inits
        call.
        (explain_invalid_constexpr_fn): Likewise.

2017-01-23  Nathan Sidwell  <nathan@acm.org>

        PR c++/71710 - template using directive of field
        * pt.c (tsubst_copy_and_build [COMPONENT_REF]): Move FIELD_DECL
        check earlier.

        PR c++/71406 - ICE with scope-ref'd template id exprs
        PR c++/77508
        * typeck.c (finish_class_member_access_expr): Break up SCOPE_REF
        before breaking up TEMPLATE_ID_EXPR.

2017-01-20  Nathan Sidwell  <nathan@acm.org>

        PR c++/78495 - wrong code inherited ctor and invisi-ref parm
        * cp-gimplify.c (cp_generize_r): Don't skip thunks.

2017-01-20  David Malcolm  <dmalcolm@redhat.com>

        PR c++/77829
        PR c++/78656
        * cp-tree.h (suggest_alternatives_for): Add bool param.
        (suggest_alternative_in_explicit_scope): New decl.
        * error.c (qualified_name_lookup_error): When SCOPE is a namespace
        that isn't the global one, call new function
        suggest_alternative_in_explicit_scope, only calling
        suggest_alternatives_for if it fails, and disabling near match
        searches fort that case.  When SCOPE is the global namespace,
        pass true for new param to suggest_alternatives_for to allow for
        fuzzy name lookups.
        * lex.c (unqualified_name_lookup_error): Pass true for new param
        to suggest_alternatives_for.
        * name-lookup.c (consider_binding_level): Add forward decl.
        (suggest_alternatives_for): Add "suggest_misspellings" param,
        using it to conditionalize the fuzzy name-lookup code.
        (suggest_alternative_in_explicit_scope): New function.
        * parser.c (cp_parser_primary_expression): When calling
        finish_id_expression, pass location of id_expression rather
        than that of id_expr_token.
        (cp_parser_id_expression): Convert local "unqualified_id" from
        tree to cp_expr to avoid implicitly dropping location information.

2017-01-20  Marek Polacek  <polacek@redhat.com>

        PR c/64279
        * call.c (build_conditional_expr_1): Warn about duplicated branches.
        * semantics.c (finish_expr_stmt): Build statement using the proper
        location.

2017-01-19  Jason Merrill  <jason@redhat.com>

        US 20 - forwarding references and class template argument deduction
        * cp-tree.h (TEMPLATE_TYPE_PARM_FOR_CLASS): New.
        * pt.c (push_template_decl_real): Set it.
        (maybe_adjust_types_for_deduction): Check it.
        (rewrite_template_parm): Copy it.

        US 19 - deduction guides and constructors
        * call.c (joust): Prefer deduction guides to constructors.
        * pt.c (build_deduction_guide): Set DECL_ARTIFICIAL.
        (deduction_guide_p): Check DECL_P.

        * decl.c (check_initializer): Always use build_aggr_init for array
        decomposition.

        PR c++/79130 - decomposition and direct-initialization
        * init.c (build_aggr_init): Communicate direct-initialization to
        build_vec_init.
        (build_vec_init): Check for array copy sooner.
        * parser.c (cp_parser_decomposition_declaration): Remove call to
        build_x_compound_expr_from_list.

2017-01-18  Jason Merrill  <jason@redhat.com>

        PR c++/68666 - member variable template-id
        * typeck.c (finish_class_member_access_expr): Handle variable
        template-id.
        * pt.c (lookup_and_finish_template_variable): No longer static.
        * cp-tree.h: Declare it.

2017-01-18  Nathan Sidwell  <nathan@acm.org>

        PR c++/78488
        * call.c (build_over_call): When checking ellipsis conversions for
        an inherited ctor, make sure there is at least one conversion.

2017-01-18  Jason Merrill  <jason@redhat.com>

        PR c++/78894 - ICE with class deduction and default arg
        * pt.c (build_deduction_guide): Set DECL_PRIMARY_TEMPLATE.

2017-01-18  Markus Trippelsdorf  <markus@trippelsdorf.de>

        PR c++/77489
        * mangle.c (write_discriminator): Reorganize abi warning check.

2017-01-18  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h: Clarify exception spec node comment.
        * except.c (nothrow_spec_p): Simplify by checking node-equality.

        PR c++/79091
        * mangle.c (write_exception_spec): Check nothrow explicitly.
        (write_encoding): Don't increment processing_template_decl around
        encoding.

2017-01-18  Markus Trippelsdorf  <markus@trippelsdorf.de>

        PR c++/70182
        * mangle.c (write_template_args): Add "on" for operator names.

2017-01-18  Markus Trippelsdorf  <markus@trippelsdorf.de>

        PR c++/77489
        * mangle.c (write_discriminator): Handle discriminator >= 10.

2017-01-17  Nathan Sidwell  <nathan@acm.org>

        PR c++/61636
        * cp-tree.h (maybe_generic_this_capture): Declare.
        * lambda.c (resolvable_dummy_lambda): New, broken out of ...
        (maybe_resolve_dummy): ... here.  Call it.
        (maybe_generic_this_capture): New.
        * parser.c (cp_parser_postfix_expression): Speculatively capture
        this in generic lambda in unresolved member function call.
        * pt.c (tsubst_copy_and_build): Force hard error from failed
        member function lookup in generic lambda.

2017-01-17  Aldy Hernandez  <aldyh@redhat.com>

        PR c++/70565
        * cp-array-notation.c (expand_array_notation_exprs): Handle
        OMP_PARALLEL.

2017-01-11  Jason Merrill  <jason@redhat.com>

        PR c++/78337 - ICE on invalid with generic lambda
        * semantics.c (process_outer_var_ref): Check if containing_function
        is null.  Move inform call under complain test.

2017-01-11  Nathan Sidwell  <nathan@acm.org>

        PR c++/77812
        * name-lookup.c (set_namespace_binding_1): An overload of 1 decl
        is a new overload.

2017-01-11  Nathan Sidwell  <nathan@acm.org>

        * name-lookup.c (push_overloaded_decl_1): Refactor OVERLOAD creation.

2017-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR c++/78341
        * parser.c (cp_parser_std_attribute_spec): Remove over-eager
        assertion.  Formatting fix.

        PR c++/72813
        * decl2.c (c_parse_final_cleanups): Set flag_syntax_only to 1 after
        writing PCH file.

2017-01-10  David Malcolm  <dmalcolm@redhat.com>

        PR c++/77949
        * parser.c (cp_parser_class_specifier_1): Only suggest inserting
        a missing semicolon if we have a valid insertion location for
        the fix-it hint.

2017-01-10  Jason Merrill  <jason@redhat.com>

        FI 20, decomposition declaration with parenthesized initializer.
        * parser.c (cp_parser_decomposition_declaration): Use
        cp_parser_initializer.

2017-01-09  Jason Merrill  <jason@redhat.com>

        Implement P0195R2, C++17 variadic using.
        * parser.c (cp_parser_using_declaration): Handle ellipsis and comma.
        * pt.c (tsubst_decl): Handle pack expansion in USING_DECL_SCOPE.
        * error.c (dump_decl): Likewise.

2017-01-09  Jakub Jelinek  <jakub@redhat.com>

        PR translation/79019
        PR translation/79020
        * semantics.c (finish_omp_clauses): Add missing whitespace to
        translatable strings.
        * cp-cilkplus.c (cpp_validate_cilk_plus_loop_aux): Fix comment typo.

2017-01-07  Jason Merrill  <jason@redhat.com>

        PR c++/78948 - instantiation from discarded statement
        * parser.h (struct cp_parser): Remove in_discarded_stmt field.
        * cp-tree.h (in_discarded_stmt): Declare it.
        (struct saved_scope): Add discarded_stmt bitfield.
        (in_discarded_stmt): New macro.
        * decl2.c (mark_used): Check it.
        * parser.c (cp_parser_selection_statement): Adjust.
        (cp_parser_jump_statement): Adjust.

2017-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR c++/78931
        * decl.c (cp_finish_decomp): Remove probe variable, if tt is
        REFERENCE_REF_P, set tt to its operand.

        PR c++/78890
        * class.c (check_field_decls): Diagnose REFERENCE_TYPE fields in
        unions even for C++11 and later.

2017-01-05  Nathan Sidwell  <nathan@acm.org>

        PR c++/78765
        * pt.c (convert_nontype_argument): Don't try and see if integral
        or enum expressions are constants prematurely.

2017-01-04  Marek Polacek  <polacek@redhat.com>

        PR c++/64767
        * typeck.c (cp_build_binary_op): Warn when a pointer is compared with
        a zero character literal.

2017-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR c++/78949
        * typeck.c (cp_build_unary_op): Call mark_rvalue_use on arg if it has
        vector type.

        PR c++/78693
        * parser.c (cp_parser_simple_declaration): Only complain about
        inconsistent auto deduction if auto_result doesn't use auto.

        * parser.c (cp_parser_simple_declaration): Diagnose function
        declaration among more than one init-declarators with auto
        specifier.

        PR c++/71182
        * parser.c (cp_lexer_previous_token): Use vec_safe_address in the
        assertion, as lexer->buffer may be NULL.

2017-01-04  Marek Polacek  <polacek@redhat.com>

        PR c++/77545
        PR c++/77284
        * constexpr.c (potential_constant_expression_1): Handle CLEANUP_STMT.

2017-01-04  Nathan Sidwell  <nathan@acm.org>

        PR c++/66735
        * cp-tree.h (DECLTYPE_FOR_REF_CAPTURE): New.
        (lambda_capture_field_type): Update prototype.
        * lambda.c (lambda_capture_field_type): Add is_reference parm.
        Add referenceness here.
        (add_capture): Adjust lambda_capture_field_type call, refactor
        error checking.
        * pt.c (tsubst): Adjust lambda_capture_field_type call.

2017-01-01  Jakub Jelinek  <jakub@redhat.com>

        Update copyright years.
\f
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