Pedwarn about auto parameter even without -Wpedantic.

[gcc.git] / gcc / cp / ChangeLog

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

        PR c++/84045 - ICE with typedef and noexcept.
        * except.c (build_noexcept_spec): Use strip_typedefs_expr.

        PR c++/84376 - ICE with omitted template arguments.
        * pt.c (dguide_name_p): Check for IDENTIFIER_NODE.

        PR c++/84368 - wrong error with local variable in variadic lambda.
        * pt.c (tsubst_pack_expansion): Fix handling of non-packs in
        local_specializations.

2018-02-15  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84330
        * constraint.cc (tsubst_constraint_info): Handle an error_mark_node
        as first argument.

2018-02-14  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84350
        * pt.c (do_auto_deduction): Don't check the TREE_TYPE of a null
        init, early return.

2018-02-14  Nathan Sidwell  <nathan@acm.org>

        * decl2.c (mark_vtable_entries): Set input_location to decl's.
        (c_parse_final_cleanups): Restore input_location after emitting
        vtables.

2018-02-14  Paolo Carlini  <paolo.carlini@oracle.com>

        * cp-tree.h (do_auto_deduction (tree, tree, tree)): Remove.
        (do_auto_deduction (tree, tree, tree, tsubst_flags_t,
        auto_deduction_context, tree, int): Add defaults.
        * pt.c (do_auto_deduction (tree, tree, tree)): Remove definition.
        (tsubst_omp_for_iterator): Adjust do_auto_deduction call, forward
        tsubst_flags_t argument.
        * init.c (build_new): Likewise.

2018-02-13  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84364
        * typeck.c (check_return_expr): Don't emit -Weffc++ warning
        about return other than *this in assignment operators if
        retval is type dependent expression.

2018-02-13  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84333
        * call.c (build_conditional_expr_1): Use cp_save_expr instead of
        save_expr for the G++ extension.

2018-02-13  Jason Merrill  <jason@redhat.com>

        PR c++/84080 - ICE with return type deduction and specialization.
        * pt.c (determine_specialization): Check uses_template_parms.

        Fix more variadic capture issues.
        * pt.c (find_parameter_packs_r): Also look at explicit captures.
        (check_for_bare_parameter_packs): Check current_class_type for
        lambda context.
        (extract_locals_r): Handle seeing a full instantiation of a pack.
        (tsubst_pack_expansion): Likewise.  Force lambda capture.
        * parser.c (cp_parser_lambda_introducer): Don't
        check_for_bare_parameter_packs.

        PR c++/84338 - wrong variadic sizeof.
        * pt.c (argument_pack_select_arg): Like the macro, but look through
        a pack expansion.
        (tsubst, tsubst_copy, dependent_template_arg_p): Use it.
        (extract_fnparm_pack): Do make_pack_expansion.
        (extract_locals_r): Do strip a pack expansion.
        * cp-tree.h (ARGUMENT_PACK_SELECT_ARG): Remove.

2018-02-12  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84341
        * parser.c (cp_parser_binary_expression): Use build_min instead of
        build2_loc to build the no_toplevel_fold_p toplevel binary expression.

2018-02-12  Nathan Sidwell  <nathan@acm.org>

        PR c++/84263
        * parser.c (cp_parser_decltype): Push and pop
        deferring_access_checks.  Reorganize to avoid goto.

2018-02-12  Richard Biener  <rguenther@suse.de>

        PR c++/84281
        * constexpr.c (cxx_eval_vec_init_1): Use a RANGE_EXPR to compact
        uniform constructors and delay allocating them fully.

2018-02-09  Jason Merrill  <jason@redhat.com>

        PR c++/84036 - ICE with variadic capture.
        Handle variadic capture proxies more like non-variadic.
        * lambda.c (build_capture_proxy): Remove workaround.
        * pt.c (find_parameter_packs_r): The proxy is a pack.
        (instantiate_class_template_1): Remove dead lambda code.
        (extract_fnparm_pack): Don't make_pack_expansion.
        (extract_locals_r): Don't strip a pack expansion.
        (tsubst_pack_expansion): Handle proxy packs.  Use
        PACK_EXPANSION_EXTRA_ARGS less.
        (tsubst_decl) [FIELD_DECL]: Don't register_specialization.
        (tsubst_copy) [FIELD_DECL]: Don't retrieve*_specialization.
        [VAR_DECL]: Handle ARGUMENT_PACK_SELECT.
        (tsubst_expr) [DECL_EXPR]: Handle proxy packs.
        (tsubst_copy_and_build) [VAR_DECL]: Handle proxy packs normally.

2018-02-10  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/83987
        * tree.c (cp_free_lang_data): Revert 2018-01-23 change.

2018-02-09  Jason Merrill  <jason@redhat.com>

        PR c++/81917 - ICE with void_t and partial specialization.
        * pt.c (instantiate_class_template_1): Set TYPE_BEING_DEFINED before
        calling most_specialized_partial_spec.

2018-02-09  Nathan Sidwell  <nathan@acm.org>

        PR c/84293
        * typeck.c (cp_build_indirect_ref_1, build_reinterpret_cast_1):
        Pass expr location to strict_aliasing_warning.

2018-02-09  Jason Merrill  <jason@redhat.com>

        PR c++/84296 - ICE with qualified-id in template.
        PR c++/83714
        * pt.c (unknown_base_ref_p): New.
        (instantiation_dependent_scope_ref_p): Use it instead of
        any_dependent_bases_p.

2018-02-09  Marek Polacek  <polacek@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR c++/83659
        * constexpr.c (cxx_fold_indirect_ref): Sync some changes from
        fold_indirect_ref_1, including poly_*int64.  Verify first that
        tree_fits_poly_int64_p (op01).  Formatting fixes.

2018-02-08  Paolo Carlini  <paolo.carlini@oracle.com>

        * constexpr.c (cxx_eval_component_reference): Use INDIRECT_REF_P.
        * lambda.c (build_capture_proxy): Likewise.
        * search.c (field_access_p): Likewise.
        * semantics.c (omp_clause_decl, omp_privatize_field,
        finish_omp_clauses): Likewise.

2018-02-08  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/83806
        * typeck.c (decay_conversion): Use mark_rvalue_use for the special
        case of nullptr too.

2018-02-08  Nathan Sidwell  <nathan@acm.org>

        * class.c (finish_struct): Fix std:initializer_list diagnostic
        formatting.

2018-02-08  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/83204
        * pt.c (tsubst_copy_and_build): Use force_paren_expr for INDIRECT_REF.

2018-02-07  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84082
        * parser.c (cp_parser_dot_deref_incomplete): New function.
        (cp_parser_postfix_dot_deref_expression): Use it.

2018-02-07  David Malcolm  <dmalcolm@redhat.com>

        PR c++/81610
        PR c++/80567
        * name-lookup.c (suggest_rid_p): New function.
        (lookup_name_fuzzy): Replace enum-rid-filtering logic with call to
        suggest_rid_p.

2018-02-07  Jason Merrill  <jason@redhat.com>

        PR c++/84182 - ICE with captured lambda
        PR c++/84181
        * pt.c (extract_locals_r, extract_local_specs): New.
        (tsubst_pack_expansion): Use them.

2018-02-07  Martin Liska  <mliska@suse.cz>

        PR c++/84059.
        * class.c (add_method): Append argument value.
        * cp-tree.h (maybe_version_functions): Add new argument.
        * decl.c (decls_match): Call it if a declaration does not
        have DECL_FUNCTION_VERSIONED.
        (maybe_version_functions): record argument is added.

2018-02-05  Marek Polacek  <polacek@redhat.com>

        * class.c: Remove unused global variables.
        (build_primary_vtable): Don't gather statistics.
        (print_class_statistics): Remove.
        * cp-tree.h (print_class_statistics): Remove.
        * tree.c (cxx_print_statistics): Don't call print_class_statistics.

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

        * class.c (is_really_empty_class): Use DECL_UNNAMED_BIT_FIELD.
        * constexpr.c (cx_check_missing_mem_inits): Likewise.
        * decl.c (next_initializable_field, find_decomp_class_base,
        cp_finish_decomp): Likewise.
        * typeck2.c (process_init_constructor_record): Likewise.

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

        PR c++/84181 - ICE with lambda parm in template argument.
        * tree.c (strip_typedefs_expr): Use cp_tree_operand_length.

2018-02-01  Jason Merrill  <jason@redhat.com>

        PR c++/84160 - ICE with nested variadic capture.
        * lambda.c (is_capture_proxy_with_ref): New.
        (insert_capture_proxy): Don't set DECL_CAPTURED_VARIABLE from a
        COMPONENT_REF.
        * expr.c (mark_use): Use is_capture_proxy_with_ref.
        * constexpr.c (potential_constant_expression_1): Likewise.
        * semantics.c (process_outer_var_ref): Likewise.

2018-02-01  Marek Polacek  <polacek@redhat.com>

        PR c++/84125
        * typeck.c (build_address): Relax the assert when
        processing_template_decl.

2018-02-01  Jason Merrill  <jason@redhat.com>

        PR c++/84126 - ICE with variadic generic lambda
        PR c++/84036
        PR c++/82249
        * pt.c (tsubst_pack_expansion): Handle function parameter_packs in
        PACK_EXPANSION_EXTRA_ARGS.

2018-02-01  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/83796
        * call.c (convert_like_real): If w're initializing from {} explicitly
        call abstract_virtuals_error_sfinae.

2018-01-31  Jason Merrill  <jason@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR c++/83993
        * constexpr.c (cxx_eval_outermost_constant_expr): Build NOP_EXPR
        around non-constant ADDR_EXPRs rather than clearing TREE_CONSTANT
        on ADDR_EXPR.

2018-01-31  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83993
        * constexpr.c (diag_array_subscript): Emit different diagnostics
        if TYPE_DOMAIN (arraytype) is NULL.
        (cxx_eval_array_reference, cxx_eval_store_expression): For arrays
        with NULL TYPE_DOMAIN use size_zero_node as nelts.

2018-01-31  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/84092
        * semantics.c (finish_qualified_id_expr): When handling an
        UNBOUND_CLASS_TEMPLATE only adjust qualifying_class and expr.

2018-01-31  Marek Polacek  <polacek@redhat.com>

        PR c++/84138
        * cp-gimplify.c (cp_fold): Check if X is an error node before
        calling useless_type_conversion_p.

2018-01-30  Jason Merrill  <jason@redhat.com>

        PR c++/84091 - ICE with local class in lambda in template.
        * decl2.c (determine_visibility): Look for outer containing template
        instantiation.

        PR c++/84098 - ICE with lambda in template NSDMI.
        * pt.c (instantiate_class_template_1): Ignore more lambdas.

2018-01-29  Jason Merrill  <jason@redhat.com>

        PR c++/68810 - wrong location for reinterpret_cast error.
        * cvt.c (cp_convert_to_pointer): Always build a CONVERT_EXPR when
        !dofold.

2018-01-29  Marek Polacek  <polacek@redhat.com>

        PR c++/83996
        * constexpr.c (cxx_fold_indirect_ref): Compute ((foo *)&fooarray)[1]
        => fooarray[1] in offset_int.

2018-01-29  Jason Merrill  <jason@redhat.com>

        PR c++/83942 - wrong unused warning with static_cast.
        * cvt.c (ocp_convert): Call mark_rvalue_use.

2018-01-26  Jason Merrill  <jason@redhat.com>

        PR c++/83956 - wrong dtor error with anonymous union
        * method.c (walk_field_subobs): Variant members only affect
        deletedness.
        (maybe_explain_implicit_delete): Pass &deleted_p for diagnostic.

        PR c++/84036 - ICE with variadic capture.
        PR c++/82249
        * pt.c (tsubst_pack_expansion): When optimizing a simple
        substitution, pull a single pack expansion out of its pack.

        PR c++/82514 - ICE with local class in generic lambda.
        * pt.c (regenerated_lambda_fn_p): Remove.
        (enclosing_instantiation_of): Don't use it.
        (tsubst_function_decl): Call enclosing_instantiation_of.

        * pt.c (lookup_template_class_1): Add sanity check.
        * name-lookup.c (do_pushtag): Don't add closures to local_classes.

2018-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR c++/84031
        * decl.c (find_decomp_class_base): Ignore unnamed bitfields.  Ignore
        recursive calls that return ret.
        (cp_finish_decomp): Ignore unnamed bitfields.

2018-01-23  Jason Merrill  <jason@redhat.com>

        PR c++/82249 - wrong mismatched pack length error.
        * pt.c (extract_fnparm_pack, tsubst_pack_expansion): Handle
        unsubstituted function parameter pack.

2018-01-23  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/83921
        * decl.c (check_for_uninitialized_const_var): Not static; add
        bool and tsubst_flags_t parameters; adjust to be used both in
        constexpr context and not.
        * constexpr.c (potential_constant_expression_1): Use the above.
        * cp-tree.h (check_for_uninitialized_const_var): Declare.

2018-01-23  Jason Merrill  <jason@redhat.com>

        PR c++/83947 - ICE with auto declarations.
        * pt.c (do_auto_deduction): Don't deduce from an auto decl.
        * decl.c (undeduced_auto_decl): Limit to vars and fns.

2018-01-23  David Malcolm  <dmalcolm@redhat.com>

        PR c++/83974
        * pt.c (tsubst_copy_and_build) <CONSTRUCTOR>: Remove early bailout
        for pointer to member function types.

2018-01-23  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/83987
        * tree.c (cp_free_lang_data): Change DECL_VALUE_EXPR of
        DECL_OMP_PRIVATIZED_MEMBER vars to error_mark_node.

2018-01-23  Nathan Sidwell  <nathan@acm.org>

        PR c++/83988
        * pt.c (tsubst_baselink): Remove optype assert.
        * ptree.c (cxx_print_xnode): <case BASELINK> Print BASELINK_OPTYPE.

2018-01-23  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83958
        * decl.c (cp_finish_decomp): Diagnose if reference structure binding
        refers to incomplete type.

2018-01-23  Nathan Sidwell  <nathan@acm.org>

        Deprecate ARM-era for scope handling
        * decl.c (poplevel): Flag_new_for_scope is a boolean-like.
        (cxx_init_decl_processing): Deprecate flag_new_for_scope being
        cleared.
        * name-lookup.c (check_for_out_of_scope_variable): Deprecate and
        cleanup handling.
        * semantics.c (begin_for_scope): Flag_new_for_scope is
        boolean-like.
        (finish_for_stmt, begin_range_for_stmt): Likewise.

2018-01-22  Jason Merrill  <jason@redhat.com>

        PR c++/83720
        * decl2.c (determine_visibility): Fix template_decl handling
        instead of blocking it.

        PR c++/83720 - ICE with lambda and LTO.
        * decl2.c (determine_visibility): Clear template_decl for
        function-scope decls.  Propagate anonymous linkage from containing
        function.

2018-01-22  Marek Polacek  <polacek@redhat.com>

        PR c++/81933
        * typeck2.c (split_nonconstant_init_1): Return false if we didn't
        split out anything.

2018-01-22  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR c++/83895
        * decl.c (grokdeclarator): Don't diagnose extra parens
        on typedefs.

2018-01-19  Jakub Jelinek  <jakub@redhat.com>

        PR c++/81167
        * call.c (joust): Use TREE_TYPE (source) if source is
        a POINTER_TYPE_P rather than if ! DECL_CONSTRUCTOR_P (w->fn).

        PR c++/83919
        * typeck.c (convert_for_assignment): Suppress warn_ignored_qualifiers
        for direct enum init.
        * decl.c (reshape_init): Likewise.

2018-01-19  Marek Polacek  <polacek@redhat.com>

        * constexpr.c (fold_simple): Simplify.

2018-01-18  Jason Merrill  <jason@redhat.com>

        PR c++/83714
        * search.c (any_dependent_bases_p): Handle null TREE_BINFO.
        * pt.c (instantiation_dependent_scope_ref_p): True if
        any_dependent_bases_p.

2018-01-18  Paolo Carlini  <paolo.carlini@oracle.com>

        * cp-tree.h: Fix comment typo (DECL_NON_TRIVIALLY_INITIALIZED_P
        vs DECL_NONTRIVIALLY_INITIALIZED_P).

2018-01-18  Jason Merrill  <jason@redhat.com>

        PR c++/82461 - constexpr list-initialized member
        * constexpr.c (potential_constant_expression_1): Check
        TARGET_EXPR_DIRECT_INIT_P.

2018-01-18  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/81013
        * decl.c (xref_basetypes): Early return upon error about derived
        union.

2018-01-18  Nathan Sidwell  <nathan@acm.org>

        PR c++/83160
        * cp-tree.h (mark_use): Declare.
        * expr.c (mark_use): Make extern.
        * call.c (direct_reference_binding): Set inner conv's
        rvaluedness_matches_p, if it is an identity.
        (convert_like_real): Mark lvalue or rvalue use for identity as
        rvaledness_matches_p demands.

2018-01-18  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83824
        * parser.c (attr_chainon): New function.
        (cp_parser_label_for_labeled_statement, cp_parser_decl_specifier_seq,
        cp_parser_namespace_definition, cp_parser_init_declarator,
        cp_parser_type_specifier_seq, cp_parser_parameter_declaration,
        cp_parser_gnu_attributes_opt): Use it.
        (cp_parser_member_declaration, cp_parser_objc_class_ivars,
        cp_parser_objc_struct_declaration): Likewise.  Don't reset
        prefix_attributes if attributes is error_mark_node.

2018-01-17  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/78344
        * decl.c (grokdeclarator): Do not append the error_mark_node
        due to an erroneous optional attribute-specifier-seq.

2018-01-17  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83897
        * cp-gimplify.c (cp_maybe_instrument_return): Handle
        CLEANUP_POINT_EXPR.

2018-01-17  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/81054
        * constexpr.c (ensure_literal_type_for_constexpr_object): Return
        error_mark_node when we give an error.
        * decl.c (cp_finish_decl): Use the latter.

2018-01-17  Nathan Sidwell  <nathan@acm.org>

        PR c++/83287
        * init.c (build_raw_new_expr): Scan list for lookups to keep.

2018-01-17  David Malcolm  <dmalcolm@redhat.com>

        PR c++/83814
        * expr.c (fold_for_warn): Move from c-common.c, reducing to just
        the C++ part.  If processing a template, call
        fold_non_dependent_expr rather than fully folding.

2018-01-17  Jason Merrill  <jason@redhat.com>

        PR c++/81067 - redundant NULL warning.
        * call.c (convert_like_real): Restore null_node handling.

2018-01-17  Jason Merrill  <jason@redhat.com>

        PR c++/81843 - ICE with variadic member template.
        PR c++/72801
        * pt.c (unify_pack_expansion): Don't try to deduce enclosing
        template args.

2018-01-17  David Malcolm  <dmalcolm@redhat.com>

        PR c++/83799
        * pt.c (type_dependent_expression_p): Strip any location wrapper
        before testing tree codes.
        (selftest::test_type_dependent_expression_p): New function.
        (selftest::cp_pt_c_tests): Call it.

2018-01-17  Nathan Sidwell  <nathan@acm.org>

        PR c++/83739
        * pt.c (tsubst_expr) <case RANGE_FOR_STMT>: Rebuild a range_for if
        this not a final instantiation.

2018-01-16  Jason Merrill  <jason@redhat.com>

        PR c++/83714 - ICE checking return in template.
        * typeck.c (check_return_expr): Call build_non_dependent_expr.

2018-01-16  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83817
        * pt.c (tsubst_copy_and_build) <case CALL_EXPR>: If function
        is AGGR_INIT_EXPR rather than CALL_EXPR, set AGGR_INIT_FROM_THUNK_P
        instead of CALL_FROM_THUNK_P.

        PR c++/83825
        * name-lookup.c (member_vec_dedup): Return early if len is 0.
        (resort_type_member_vec, set_class_bindings,
        insert_late_enum_def_bindings): Use vec qsort method instead of
        calling qsort directly.

2018-01-15  Martin Sebor  <msebor@redhat.com>

        PR c++/83588
        * class.c (find_flexarrays): Make a record of multiple flexible array
        members.

2018-01-12  Jason Merrill  <jason@redhat.com>

        PR c++/83186 - ICE with static_cast of list-initialized temporary.
        * typeck.c (build_static_cast): Use build_non_dependent_expr.

2018-01-12  Nathan Sidwell  <nathan@acm.org>

        * cp-tree.h (mark_rvalue_use): Add parm name.
        * expr.c (mark_lvalue_use, mark_lvalue_use_nonread): Move next to
        mark_rvalue_use.
        * call.c (convert_like_real): Fix formatting.

2018-01-11  Jason Merrill  <jason@redhat.com>

        PR c++/82728 - wrong -Wunused-but-set-variable
        PR c++/82799
        PR c++/83690
        * call.c (perform_implicit_conversion_flags): Call mark_rvalue_use.
        * decl.c (case_conversion): Likewise.
        * semantics.c (finish_static_assert): Call
        perform_implicit_conversion_flags.

2018-01-11  Nathan Sidwell  <nathan@acm.org>

        * method.c (enum mangling_flags): Delete long-dead enum.

2018-01-10  Paolo Carlini  <paolo.carlini@oracle.com>

        * parser.c (cp_parser_std_attribute_spec): When
        token_pair::require_open / require_close return false simply
        return error_mark_node, avoid duplicate cp_parser_error about
        expected '(' / ')', respectively.

2018-01-10  David Malcolm  <dmalcolm@redhat.com>

        PR c++/43486
        * call.c (null_ptr_cst_p): Strip location wrappers when
        converting from '0' to a pointer type in C++11 onwards.
        (conversion_null_warnings): Replace comparison with null_node with
        call to null_node_p.
        (build_over_call): Likewise.
        * cp-gimplify.c (cp_fold): Remove the early bailout when
        processing_template_decl.
        * cp-lang.c (selftest::run_cp_tests): Call
        selftest::cp_pt_c_tests and selftest::cp_tree_c_tests.
        * cp-tree.h (cp_expr::maybe_add_location_wrapper): New method.
        (selftest::run_cp_tests): Move decl to bottom of file.
        (null_node_p): New inline function.
        (selftest::cp_pt_c_tests): New decl.
        (selftest::cp_tree_c_tests): New decl.
        * cvt.c (build_expr_type_conversion): Replace comparison with
        null_node with call to null_node_p.
        * error.c (args_to_string): Likewise.
        * except.c (build_throw): Likewise.
        * mangle.c (write_expression): Skip location wrapper nodes.
        * parser.c (literal_integer_zerop): New function.
        (cp_parser_postfix_expression): Call maybe_add_location_wrapper on
        the result for RID_TYPEID. Pass true for new "wrap_locations_p"
        param of cp_parser_parenthesized_expression_list.  When calling
        warn_for_memset, replace integer_zerop calls with
        literal_integer_zerop, eliminating the double logical negation
        cast to bool.  Eliminate the special-casing for CONST_DECL in
        favor of the fold_for_warn within warn_for_memset.
        (cp_parser_parenthesized_expression_list): Add "wrap_locations_p"
        param, defaulting to false.  Convert "expr" to a cp_expr, and call
        maybe_add_location_wrapper on it when wrap_locations_p is true.
        (cp_parser_unary_expression): Call maybe_add_location_wrapper on
        the result for RID_ALIGNOF and RID_SIZEOF.
        (cp_parser_builtin_offsetof): Likewise.
        * pt.c: Include "selftest.h".
        (tsubst_copy): Handle location wrappers.
        (tsubst_copy_and_build): Likewise.
        (build_non_dependent_expr): Likewise.
        (selftest::test_build_non_dependent_expr): New function.
        (selftest::cp_pt_c_tests): New function.
        * tree.c: Include "selftest.h".
        (lvalue_kind): Handle VIEW_CONVERT_EXPR location wrapper nodes.
        (selftest::test_lvalue_kind): New function.
        (selftest::cp_tree_c_tests): New function.
        * typeck.c (string_conv_p): Strip any location wrapper from "exp".
        (cp_build_binary_op): Replace comparison with null_node with call
        to null_node_p.
        (build_address): Use location of operand when building address
        expression.

2018-01-10  Marek Polacek  <polacek@redhat.com>

        PR c++/82541
        * call.c (build_conditional_expr_1): Check complain before warning.
        * pt.c (tsubst_copy_and_build) <case COND_EXPR>: Suppress
        -Wduplicated-branches.

2018-01-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/81327
        * call.c (maybe_warn_class_memaccess): Add forward declaration.
        Change last argument from tree * to const vec<tree, va_gc> *, adjust
        args uses and check number of operands too.  Don't strip away any
        nops.  Use maybe_constant_value when looking for INTEGER_CST args.
        Deal with src argument not having pointer type.  Check
        tree_fits_uhwi_p before calling tree_to_uhwi.  Remove useless
        test.
        (build_over_call): Call maybe_warn_class_memaccess here on the
        original arguments.
        (build_cxx_call): Rather than here on converted arguments.

2018-01-10  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/81055
        * init.c (build_vec_init): Avoid building an INIT_EXPR with
        error_mark_node as second argument.

2018-01-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83734
        * constexpr.c (cxx_eval_statement_list): Ignore DEBUG_BEGIN_STMTs
        in STATEMENT_LIST.  Remove unneeded assert.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * constexpr.c (cxx_eval_array_reference): Handle polynomial
        VECTOR_CST_NELTS.
        (cxx_fold_indirect_ref): Handle polynomial TYPE_VECTOR_SUBPARTS.
        * call.c (build_conditional_expr_1): Likewise.
        * decl.c (cp_finish_decomp): Likewise.
        * mangle.c (write_type): Likewise.
        * typeck.c (structural_comptypes): Likewise.
        (cp_build_binary_op): Likewise.
        * typeck2.c (process_init_constructor_array): Likewise.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83555
        * typeck.c (build_static_cast_1): For static casts to reference types,
        call build_base_path with flag_delete_null_pointer_checks as nonnull
        instead of always false.  When -fsanitize=null, call
        ubsan_maybe_instrument_reference on the NULL reference INTEGER_CST.
        * cp-gimplify.c (cp_genericize_r): Don't walk subtrees of UBSAN_NULL
        call if the first argument is INTEGER_CST with REFERENCE_TYPE.

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

        PR c++/83667
        * method.c (make_alias_for): Copy DECL_CONTEXT.

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

        PR c++/83592
        * decl.c (grokdeclarator): Don't warn about MVP in typename context.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

        PR preprocessor/83602
        * name-lookup.c (lookup_name_fuzzy): Don't use macro_use_before_def
        for builtin macros.

        PR c++/83634
        * cp-gimplify.c (cp_fold) <case NOP_EXPR>: If the operand folds to
        error_mark_node, return error_mark_node.

        Update copyright years.

2018-01-02  Jakub Jelinek  <jakub@redhat.com>

        PR c++/83556
        * tree.c (replace_placeholders_r): Pass NULL as last argument to
        cp_walk_tree instead of d->pset.  If non-TREE_CONSTANT and
        non-PLACEHOLDER_EXPR tree has been seen already, set *walk_subtrees
        to false and return.
        (replace_placeholders): Pass NULL instead of &pset as last argument
        to cp_walk_tree.

2018-01-02  Nathan Sidwell  <nathan@acm.org>

        * constexpr.c (cxx_bind_parameters_in_call): Remove unneeded local
        lval var.
\f
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