* pt.c (tsubst <{NON,}TYPE_ARGUMENT_PACK>: Simplify control flow

[official-gcc.git] / gcc / cp / ChangeLog

2016-12-07  Nathan Sidwell  <nathan@acm.org>

        * pt.c (tsubst <{NON,}TYPE_ARGUMENT_PACK>: Simplify control flow
        and avoid re-tsubsting type.

        * cp-tree.h (enum cp_tree_index): Add CPTI_AUTO_IDENTIFIER &
        CPTI_DECLTYPE_AUTO_IDENTIFIER.
        (auto_identifier, decltype_auto_identifier): New.
        *decl.c (initialize_predefined_identifiers): Add 'auto' and
        'decltype(auto)'.
        (grokdeclarator): Use cached identifier.
        * pt.c (make_decltype_auto, make_auto, make_constrained_auto,
        is_auto): Likewise.

2016-12-02  Jakub Jelinek  <jakub@redhat.com>

        PR c++/78649
        * pt.c (tsubst_init): Don't call build_value_init if decl's type
        is error_mark_node.

2016-12-02  Cesar Philippidis  <cesar@codesourcery.com>
            James Norris  <jnorris@codesourcery.com>

        * parser.c (cp_parser_oacc_enter_exit_data): Update diagnostics.
        (cp_parser_pragma): Error when PRAGMA_OACC_{ENTER_DATA,
        EXIT_DATA,WAIT} are not used in compound statements.

2016-12-01  Jason Merrill  <jason@redhat.com>

        * call.c (add_function_candidate): Also exclude inherited ctors
        that take a type reference-related to the derived class.

        * call.c (add_function_candidate): Exclude inherited copy/move
        ctors.

2016-11-29  David Malcolm  <dmalcolm@redhat.com>

        PR c++/77922
        * name-lookup.c (lookup_name_fuzzy): Filter out reserved words
        that were filtered out by init_reswords.

2016-11-28  Jakub Jelinek  <jakub@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/72808
        * decl.c (finish_enum_value_list): Call fixup_type_variants on
        current_class_type after
        insert_late_enum_def_into_classtype_sorted_fields.

2016-11-28  Jakub Jelinek  <jakub@redhat.com>

        PR c++/77591
        * typeck.c (maybe_warn_about_returning_address_of_local): Optimize
        whats_returned through fold_for_warn.

2016-11-27  Jason Merrill  <jason@redhat.com>

        PR c++/77907
        * constexpr.c (cxx_eval_constant_expression): Use cp_fold_convert.

2016-11-24  Martin Liska  <mliska@suse.cz>

        PR bootstrap/78493
        * parser.c (cp_parser_range_for): Use safe_push instead of quick_push.

2016-11-23  Jakub Jelinek  <jakub@redhat.com>

        PR c++/77907
        * cp-gimplify.c (cp_fold) <case CALL_EXPR>: When calling constructor
        and maybe_constant_value returns non-CALL_EXPR, create INIT_EXPR
        with the object on lhs and maybe_constant_value returned expr on rhs.

        PR c++/71450
        * pt.c (tsubst_copy): Return error_mark_node when mark_used
        fails, even when complain & tf_error.

        PR c++/77739
        * cp-gimplify.c (cp_gimplify_tree) <case VEC_INIT_EXPR>: Pass
        false as handle_invisiref_parm_p to cp_genericize_tree.
        (struct cp_genericize_data): Add handle_invisiref_parm_p field.
        (cp_genericize_r): Don't wrap is_invisiref_parm into references
        if !wtd->handle_invisiref_parm_p.
        (cp_genericize_tree): Add handle_invisiref_parm_p argument,
        set wtd.handle_invisiref_parm_p to it.
        (cp_genericize): Pass true as handle_invisiref_parm_p to
        cp_genericize_tree.  Formatting fix.

2016-11-21  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR c++/71973
        * decl.c (duplicate_decls): Warn when a built-in function is redefined.
        Don't overload builtin functions with C++ functions.
        Handle const_tm_ptr_type_node like file_ptr_node.
        Copy the TREE_NOTHROW flag unmodified to the old decl.

2016-11-18  Jason Merrill  <jason@redhat.com>

        PR objc++/78418 - ICE in string tests on darwin
        * tree.c (lvalue_kind): Guard DECL_HAS_VALUE_EXPR_P.

2016-11-18  Jakub Jelinek  <jakub@redhat.com>

        PR c++/77285
        * mangle.c (mangle_tls_init_fn, mangle_tls_wrapper_fn): Call
        check_abi_tags.

2016-11-18  Jason Merrill  <jason@redhat.com>

        PR c++/67631 - list-init and explicit conversions
        * semantics.c (finish_compound_literal): Call digest_init_flags.
        * typeck2.c (digest_init_flags): Add complain parm.
        (store_init_value): Pass it.

2016-11-18  Richard Sandiford  <richard.sandiford@arm.com>
            Alan Hayward  <alan.hayward@arm.com>
            David Sherwood  <david.sherwood@arm.com>

        * class.c (finish_struct_bits): Use SET_DECL_MODE.
        (build_base_field_1, layout_class_type, finish_struct_1): Likewise.
        * decl.c (make_label_decl): Likewise.
        * pt.c (tsubst_decl): Likewise.

2016-11-17  Jason Merrill  <jason@redhat.com>

        PR c++/78193 - inherited ctor regressions on sparc32.
        * call.c (build_over_call): Don't set CALL_FROM_THUNK_P here.
        (build_call_a): Set it here, and don't insert EMPTY_CLASS_EXPR.
        (convert_like_real) [ck_rvalue]: Also pass non-addressable
        types along directly.

2016-11-17  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/55080
        * parser.c (cp_parser_non_integral_constant_expression): Issue a
        pedwarn instead of an error for case NIC_FLOAT.

2016-11-17  Jason Merrill  <jason@redhat.com>

        PR c++/78124 - list-initialization and inherited ctor
        * name-lookup.c (do_class_using_decl): Set CLASSTYPE_NON_AGGREGATE.

        PR c++/78369 - {} as default argument
        * call.c (build_special_member_call): Handle CONSTRUCTOR.

        PR c++/68377
        * parser.c (cp_parser_fold_expression): Check TREE_NO_WARNING.

2016-11-16  Jason Merrill  <jason@redhat.com>

        PR c++/78373
        * decl.c (cp_finish_decl): Don't set TREE_CONSTANT on a reference.
        * typeck2.c (store_init_value): Likewise.

        * decl.c (store_decomp_type, lookup_decomp_type): New.
        (cp_finish_decomp): Call store_decomp_type.
        * semantics.c (finish_decltype_type): Call lookup_decomp_type.
        * cp-tree.h: Declare lookup_decomp_type.

2016-11-15  Jakub Jelinek  <jakub@redhat.com>

        * decl.c (cp_finish_decomp): For DECL_NAMESPACE_SCOPE_P decl,
        set DECL_ASSEMBLER_NAME.
        * parser.c (cp_parser_decomposition_declaration): Likewise
        if returning error_mark_node.
        * mangle.c (mangle_decomp): New function.
        * cp-tree.h (mangle_decomp): New declaration.

2016-11-15  Jason Merrill  <jason@redhat.com>

        PR c++/78358
        * semantics.c (finish_decltype_type): Strip references for a tuple
        decomposition.
        * cp-tree.h (DECL_DECOMPOSITION_P): False for non-variables.

        * decl2.c (decl_maybe_constant_var_p): References qualify.
        * constexpr.c (non_const_var_error): Handle references.
        * init.c (constant_value_1): Always check decl_constant_var_p.
        * cp-gimplify.c (cp_fold_maybe_rvalue): Don't fold references.
        * error.c (dump_decl_name): Split out from dump_decl.

2016-11-14  Jason Merrill  <jason@redhat.com>

        * tree.c (bitfield_p): New.
        * cp-tree.h: Declare it.
        * typeck.c (cxx_sizeof_expr, cxx_alignof_expr)
        (cp_build_addr_expr_1): Use it instead of DECL_C_BIT_FIELD.
        * decl.c (cp_finish_decomp): Look through reference.  Always
        SET_DECL_DECOMPOSITION_P.
        * semantics.c (finish_decltype_type): Adjust decomposition handling.

2016-11-13  Jakub Jelinek  <jakub@redhat.com>
            Jason Merrill  <jason@redhat.com>

        Implement P0217R3 - C++17 structured bindings
        * cp-tree.h (struct lang_decl_base): Add decomposition_p.
        (DECL_DECOMPOSITION_P): New
        (enum auto_deduction_context): Add adc_decomp_type.
        (enum cp_declarator_kind): Add cdk_decomp.
        * constexpr.c (cxx_eval_constant_expression): Look through
        DECL_VALUE_EXPR.
        (potential_constant_expression_1): Likewise.
        * decl.c (reshape_init): Preserve CONSTRUCTOR_IS_DIRECT_INIT.
        (check_initializer): Use build_aggr_init for DECL_DECOMPOSITION_P.
        (cp_finish_decl): Pass adc_decomp_type for decomposition.
        (find_decomp_class_base, get_tuple_size, get_tuple_element_type)
        (get_tuple_decomp_init, cp_finish_decomp): New.
        (grokdeclarator): Handle decomposition.
        * init.c (build_aggr_init): Handle decomposition array.
        (build_vec_init): Handle initialization from { array }.
        * name-lookup.c (add_function): Always wrap TEMPLATE_DECL in
        OVERLOAD.
        * parser.c (declarator_can_be_parameter_pack): Handle cdk_decomp.
        (function_declarator_p, strip_declarator_types)
        (cp_parser_check_declarator_template_parameters): Likewise.
        (cp_parser_range_for, cp_convert_range_for): Handle decomposition.
        (cp_parser_simple_declaration): Parse decomposition.
        (cp_parser_decomposition_declaration): New.
        * pt.c (tsubst_decomp_names): New.
        (subst_expr) [DECL_EXPR, RANGE_FOR_STMT]: Handle decomposition.
        (do_auto_deduction): Handle adc_decomp_type.
        * semantics.c (finish_decltype_type): Look through DECL_VALUE_EXPR.
        * typeck.c (is_bitfield_expr_with_lowered_type): Likewise.
        * tree.c (lvalue_kind): Likewise.
        (cp_build_reference_type): Handle reference collapsing.

2016-11-13  Jason Merrill  <jason@redhat.com>

        * call.c (build_new_method_call_1): Include template arguments in
        error message.
        (print_error_for_call_failure): Likewise.
        (build_new_function_call): Pass them in.
        * name-lookup.c (supplement_binding_1): Don't complain about a
        conflict with an erroneous declaration.
        * error.c (dump_decl): Fix printing of alias declaration.
        * decl.c (make_typename_type): Call cxx_incomplete_type_error.
        * parser.c (cp_parser_diagnose_invalid_type_name): Likewise.
        * semantics.c (perform_koenig_lookup): Don't wrap an error in
        TEMPLATE_ID_EXPR.

2016-11-13  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR c/35503
        * parser.c (cp_parser_postfix_pexpression): Call warn_for_restrict.

2016-11-12  Jason Merrill  <jason@redhat.com>

        CWG 2233
        * typeck.c (convert_arguments): Handle default arg followed by none.

        * constexpr.c (potential_constant_expression_1): REALPART_EXPR and
        IMAGPART_EXPR can be lvalues.

        DR 374
        PR c++/56480
        * pt.c (check_specialization_namespace): Allow any enclosing
        namespace.
        (check_unqualified_spec_or_inst): New.
        (check_explicit_specialization): Call it.
        * parser.c (cp_parser_elaborated_type_specifier)
        (cp_parser_class_head): Call it.

2016-11-10  Jason Merrill  <jason@redhat.com>

        PR c++/77337
        * pt.c (tsubst_friend_function): Don't set DECL_INITIAL.
        (instantiate_decl): It's OK to defer a constexpr function.
        * cp-tree.h (DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION): Check
        DECL_LANG_SPECIFIC.
        * decl2.c (decl_defined_p): Use it.  No longer static.
        * decl.c (redeclaration_error_message): Use decl_defined_p.
        * constexpr.c (cxx_eval_call_expression): Set input_location around
        call to instantiate_decl.

2016-11-10  Jakub Jelinek  <jakub@redhat.com>

        * mangle.c (mangle_decl): Only emit -Wc++1z-compat warnings for
        public or external symbols.

2016-11-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/78283
        * mangle.c (start_mangling): Reset G.need_cxx1z_warning.

2016-11-09  Jason Merrill  <jason@redhat.com>

        * parser.c (cp_parser_simple_type_specifier): Allow placeholder
        for template template parameter.
        (cp_parser_type_id_1): Improve diagnostic.
        * decl.c (grokdeclarator): Handle class deduction diagnostics here.
        * pt.c (splice_late_return_type): Not here.
        (tsubst) [TEMPLATE_TYPE_PARM]: Substitute into placeholder template.
        (do_class_deduction): Handle non-class templates.

        Implement P0127R2, Declaring non-type parameters with auto.
        * cp-tree.h (enum auto_deduction_context): Add adc_unify.
        * decl.c (grokdeclarator): Allow 'auto' in C++17 template non-type
        parameter types.
        * pt.c (do_auto_deduction): Add outer_targs parameter.
        (convert_template_argument): Call do_auto_deduction.  If adc_unify,
        don't give up on dependent init.
        (unify): Likewise.  In C++17, walk into the type of a
        TEMPLATE_PARM_INDEX.
        (for_each_template_parm): Add any_fn parameter.
        (struct pair_fn_data): Likewise.
        (for_each_template_parm_r): Call it for any tree.  In C++17, walk
        into the type of a TEMPLATE_PARM_INDEX.
        (zero_r, array_deduction_r, try_array_deduction): New.
        (type_unification_real): Call try_array_deduction.
        (get_partial_spec_bindings): Likewise.

2016-11-07  Jason Merrill  <jason@redhat.com>

        Implement P0012R1, Make exception specifications part of the type
        system.
        * cp-tree.h (enum tsubst_flags): Add tf_fndecl_type.
        (flag_noexcept_type, ce_type): New.
        * call.c (build_conv): Add ck_fnptr.
        (enum conversion_kind): Change ck_tsafe to ck_fnptr.
        (convert_like_real): Likewise.
        (standard_conversion): Likewise.  Allow function pointer
        conversions for pointers to member functions.
        (reference_compatible_p): Allow function pointer conversions.
        (direct_reference_binding): Likewise.
        (reference_binding): Reference-compatible is no longer a subset of
        reference-related.
        (is_subseq): Also strip ck_lvalue after next_conversion.
        * class.c (instantiate_type): Check fnptr_conv_p.
        (resolve_address_of_overloaded_function): Likewise.
        * cvt.c (can_convert_tx_safety): Now static.
        (noexcept_conv_p, fnptr_conv_p, strip_fnptr_conv): New.
        * decl.c (flag_noexcept_type): Define.
        (cxx_init_decl_processing): Set it.
        (bad_specifiers): Check it.
        (grokdeclarator) [cdk_function]: Add exception-spec to type here.
        * lambda.c (maybe_add_lambda_conv_op): Add exception-spec to
        returned pointer.
        * mangle.c (struct globals): Add need_cxx1z_warning.
        (mangle_decl): Check it.
        (write_exception_spec): New.
        (write_function_type): Call it.
        (canonicalize_for_substitution): Handle exception spec.
        (write_type): Likewise.
        (write_encoding): Set processing_template_decl across mangling of
        partially-instantiated type.
        * pt.c (determine_specialization): Pass tf_fndecl_type.
        (tsubst_decl, fn_type_unification): Likewise.
        (tsubst): Strip tf_fndecl_type, pass it to
        tsubst_exception_specification.
        (convert_nontype_argument_function): Handle function pointer
        conversion.
        (convert_nontype_argument): Likewise.
        (unify, for_each_template_parm_r): Walk into noexcept-specifier.
        * rtti.c (ptr_initializer): Encode noexcept.
        * tree.c (canonical_eh_spec): New.
        (build_exception_variant): Use it.
        * typeck.c (composite_pointer_type): Handle fnptr conversion.
        (comp_except_specs): Compare canonical EH specs.
        (structural_comptypes): Call it.

        * call.c (standard_conversion): Reorganize pointer conversions.
        * pt.c (convert_nontype_argument_function): Convert to ref here.
        (convert_nontype_argument): Not here.
        (convert_template_argument): Add original type to error message.
        (RECUR_AND_CHECK_FAILURE): Remove trailing semicolon.
        (unify): Compare function-qualifiers.
        * typeck.c (same_type_ignoring_top_level_qualifiers_p): Use
        cp_build_qualified_type rather than TYPE_MAIN_VARIANT.

        * pt.c (push_tinst_level_loc): Add template instantiations to the
        announce_function stream.

2016-11-04  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/67980
        * pt.c (tsubst_expr, case IF_STMT): Use fold_non_dependent_expr
        to suppress unwanted warnings.

2016-11-03  Jason Merrill  <jason@redhat.com>

        PR c++/78198
        * call.c (convert_default_arg): Look through inheriting ctors.

2016-11-03  Jakub Jelinek  <jakub@redhat.com>
            Alexandre Oliva  <aoliva@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR debug/28767
        PR debug/56974
        * tree.c (cp_check_qualified_type): Use check_base_type and
        TYPE_QUALS comparison instead of check_qualified_type.
        (cxx_type_hash_eq): Return false if type_memfn_rqual don't match.
        * cp-objcp-common.c (cp_get_debug_type): New function.
        (cp_decl_dwarf_attribute): Don't handle types here.
        (cp_type_dwarf_attribute): New function.
        * cp-objcp-common.h (cp_get_debug_type, cp_type_dwarf_attribute):
        Declare.
        (LANG_HOOKS_GET_DEBUG_TYPE, LANG_HOOKS_TYPE_DWARF_ATTRIBUTE):
        Define.

2016-11-03  Jason Merrill  <jason@redhat.com>

        * tree.c (cp_check_qualified_type): Call check_base_type instead
        of check_qualified_type.
        (cxx_type_hash_eq): Check ref-qualifiers.
        * typeck.c (apply_memfn_quals): No need to mess with TYPE_CANONICAL.

2016-11-01  Jason Merrill  <jason@redhat.com>

        Implement P0136R1, Rewording inheriting constructors.
        * call.c (enum rejection_reason_code): Add rr_inherited_ctor.
        (inherited_ctor_rejection): New.
        (add_function_candidate): Reject inherited ctors for copying.
        (enforce_access): Use strip_inheriting_ctors.
        (print_z_candidate): Likewise.  Handle rr_inherited_ctor.
        (convert_like_real): Avoid copying inheriting ctor parameters.
        (build_over_call): Likewise.  A base ctor inheriting from vbase
        has no parms.  Sorry about varargs.
        (joust): A local constructor beats inherited with the same convs.
        * class.c (add_method): Handle hiding inheriting ctors.
        (one_inherited_ctor): Handle new semantics.
        (add_implicitly_declared_members): Pass using_decl down.
        (build_clone): A base ctor inheriting from vbase has no parms.
        * cp-tree.h (DECL_INHERITED_CTOR): Store this instead of the base.
        (SET_DECL_INHERITED_CTOR): Likewise.
        (DECL_INHERITED_CTOR_BASE): Adjust.
        * constexpr.c: Adjust.
        * error.c (dump_function_decl): Decorate inheriting ctors.
        * init.c (emit_mem_initializers): Suppress access control in
        inheriting ctor.
        * mangle.c (write_special_name_constructor): Handle new inheriting
        ctor mangling.
        * method.c (strip_inheriting_ctors, inherited_ctor_binfo)
        (ctor_omit_inherited_parms, binfo_inherited_from): New.
        (synthesized_method_walk): Use binfo_inherited_from.  Suppress
        access control in inheriting ctor.
        (deduce_inheriting_ctor): Deleted if ambiguous ctor inheritance.
        (maybe_explain_implicit_delete): Explain ambigous ctor inheritance.
        (add_one_base_init, do_build_copy_constructor): Adjust.
        (locate_fn_flags, explain_implicit_non_constexpr): Adjust.
        (implicitly_declare_fn): Adjust.
        (get_inherited_ctor): Remove.
        * name-lookup.c (do_class_using_decl): Check for indirect ctor
        inheritance.
        * optimize.c (cdtor_comdat_group): Adjust for new mangling.
        (maybe_clone_body): Handle omitted parms in base clone.
        (maybe_thunk_body): Don't thunk if base clone omits parms.
        * pt.c (tsubst_decl): Adjust.
        (instantiate_template_1): Suppress access control in inheriting
        ctor.
        (fn_type_unification): Do deduction with inherited ctor.
        * tree.c (special_function_p): Adjust.

2016-11-01  Jakub Jelinek  <jakub@redhat.com>

        * cp-objcp-common.c (cp_decl_dwarf_attribute): Handle DW_AT_inline.

2016-11-01  Jason Merrill  <jason@redhat.com>

        * class.c (declared_access): Split out from handle_using_decl.

2016-10-31  Jakub Jelinek  <jakub@redhat.com>

        PR c++/78089
        * parser.c (cp_parser_postfix_expression): Replace return statement in
        the first switch with setting postfix_expression to the return
        expression and break;.

        PR c++/77886
        * pt.c (tsubst_expr) <case CASE_LABEL_EXPR> Copy over
        FALLTHROUGH_LABEL_P flag to the new LABEL_DECL.
        (tsubst_expr) <case LABEL_EXPR>: Likewise.

2016-09-11  Le-Chun Wu  <lcwu@google.com>
            Mark Wielaard  <mjw@redhat.com>

        * name-lookup.c (pushdecl_maybe_friend): When emitting a
        shadowing warning, use the code corresponding to the
        given -Wshadow= variant.

2016-10-26  Jason Merrill  <jason@redhat.com>

        * class.c (add_method): Allow using-declarations to coexist.

2016-10-25  Jason Merrill  <jason@redhat.com>

        * constexpr.c (maybe_constant_init): Pull out TARGET_EXPR_INITIAL.
        (cxx_eval_outermost_constant_expr): Don't return a CONSTRUCTOR
        with CONSTRUCTOR_NO_IMPLICIT_ZERO.
        (cxx_eval_call_expression): Clear CONSTRUCTOR_NO_IMPLICIT_ZERO.

2016-10-25  Jakub Jelinek  <jakub@redhat.com>

        * parser.c (cp_parser_postfix_expression): Adding missing break;.

        * cp-tree.h (finish_builtin_launder): Declare.
        * parser.c (cp_parser_postfix_expression): Handle RID_BUILTIN_LAUNDER.
        * semantics.c (finish_builtin_launder): New function.
        * pt.c (tsubst_copy_and_build): Handle instantiation of IFN_LAUNDER.
        * constexpr.c (cxx_eval_internal_function): Handle IFN_LAUNDER.
        (potential_constant_expression_1): Likewise.

2016-10-24  Jakub Jelinek  <jakub@redhat.com>

        * cp-objcp-common.c (cp_decl_dwarf_attribute): Handle DW_AT_reference
        and DW_AT_rvalue_reference.

        * cxx-pretty-print.c (pp_cxx_check_constraint): Use VAR_P (x)
        instead of TREE_CODE (x) == VAR_DECL.
        * constraint.cc (get_concept_definition): Likewise.
        (finish_shorthand_constraint): Likewise.
        * init.c (warn_placement_new_too_small): Likewise.
        * cp-gimplify.c (cp_genericize_r): Likewise.

2016-10-21  Jason Merrill  <jason@redhat.com>

        PR c++/77656
        * pt.c (convert_template_argument): Call convert_nontype_argument
        on value-dependent but not type-dependent arguments.
        (convert_nontype_argument): Handle value-dependent arguments.
        (canonicalize_expr_argument): New.
        (deducible_expression, unify): Skip CONVERT_EXPR.
        * error.c (dump_template_argument): Likewise.
        * mangle.c (write_expression): Likewise.

        * ptree.c (cxx_print_xnode) [TEMPLATE_PARM_INDEX]: Dump the decl.

2016-10-21  Jakub Jelinek  <jakub@redhat.com>

        * cp-objcp-common.c (cp_decl_dwarf_attribute): Handle
        DW_AT_const_expr.

2016-10-17  Jakub Jelinek  <jakub@redhat.com>

        * cp-objcp-common.h (cp_function_decl_explicit_p,
        cp_function_decl_deleted_p, cp_function_decl_defaulted): Remove.
        (cp_decl_dwarf_attribute): Declare.
        (LANG_HOOKS_FUNCTION_DECL_EXPLICIT_P,
        LANG_HOOKS_FUNCTION_DECL_DELETED_P,
        LANG_HOOKS_FUNCTION_DECL_DEFAULTED): Remove.
        (LANG_HOOKS_DECL_DWARF_ATTRIBUTE): Redefine.
        * cp-objcp-common.c (cp_function_decl_explicit_p,
        cp_function_decl_deleted_p, cp_function_decl_defaulted): Remove.
        (cp_decl_dwarf_attribute): New function.

2016-10-15  Jason Merrill  <jason@redhat.com>

        PR c++/77945
        * constexpr.c (maybe_simplify_trivial_copy): New.
        (cxx_eval_store_expression): Call it.
        * call.c (build_over_call): Use unsigned char for trivial copy.

2016-10-14  Jason Merrill  <jason@redhat.com>

        Implement P0017R1, C++17 aggregates with bases.
        * class.c (build_base_field_1): Split out from...
        (build_base_field): ...here.  In C++17 mode, build a field for
        empty bases.
        * decl.c (xref_basetypes): In C++17 aggregates can have bases.
        (next_initializable_field): Allow base fields in C++17.
        * typeck2.c (process_init_constructor_record): Likewise.

2016-10-14  Jakub Jelinek  <jakub@redhat.com>

        DR 1511 - const volatile variables and ODR
        * decl.c (grokvardecl): Change flags argument to type_quals,
        add conceptp argument.  Set TREE_PUBLIC for non-static volatile vars.
        (grokdeclarator): Adjust grokvardecl caller.

2016-10-13  Martin Sebor  <msebor@redhat.com>

        PR c++/71912
        * class.c (struct flexmems_t):  Add members.
        (find_flexarrays): Add arguments.  Correct handling of anonymous
        structs.
        (diagnose_flexarrays): Adjust to issue warnings in addition to errors.
        (check_flexarrays): Add argument.
        (diagnose_invalid_flexarray): New functions.

2016-10-13  Jakub Jelinek  <jakub@redhat.com>
            Jason Merrill  <jason@redhat.com>

        Implement P0386R2 - C++17 inline variables
        * cp-tree.h (struct lang_type): Shrink language field to 1 bit
        from 4.  Add var_declared_inline_p field.  Mention 2 spare bits.
        (DECL_VAR_DECLARED_INLINE_P): Define.
        (SET_DECL_VAR_DECLARED_INLINE_P): Define.
        (DECL_INLINE_VAR_P): Define.
        (diagnose_inline_vars_for_namespace): Declare.
        * decl.c (diagnose_inline_vars_for_namespace): New function.
        (duplicate_decls): For static data members copy
        DECL_DECLARED_CONSTEXPR_P.
        (redeclaration_error_message): Handle C++17 redundant redeclaration
        of constexpr static data member outside of class.
        (maybe_commonize_var): Handle inline variables.
        (check_initializer): Ignore inline variables for diagnostics.
        Adjust diagnostic wording for C++17.
        (make_rtl_for_nonlocal_decl): Allow in-class definition of
        inline static data members.
        (bad_specifiers): Don't diagnose inline on variables here.
        (grokvardecl): Add inlinep argument, non-static const inline variables
        are TREE_PUBLIC.
        (check_static_variable_definition): Return early also for inline
        variables.
        (mark_inline_variable): New.
        (grokdeclarator): Handle inline variables and inline static data
        members.
        * typeck2.c (store_init_value): Don't diagnose non-constant
        initializers for non-constexpr inline static data members.
        * decl2.c (vague_linkage_p): Return true for inline variables.
        (c_parse_final_cleanups): In-class declaration of inline static
        data members is a definition.  Call diagnose_inline_vars_for_namespace
        through walk_namespaces.
        * pt.c (instantiate_decl): Set pattern_defined for in-class definitions
        of inline static data members.

2016-10-13  Jason Merrill  <jason@redhat.com>

        * decl.c (mark_inline_variable): New.

>>>>>>> .r241142
2016-10-13  Thomas Preud'homme  <thomas.preudhomme@arm.com>

        * decl2.c: Include memmodel.h.
        * rtti.c: Likewise.

2016-10-11  Jason Merrill  <jason@redhat.com>

        PR c++/77742
        * init.c (build_new_1): Don't -Waligned-new about placement new.
        (malloc_alignment): New.  Consider MALLOC_ABI_ALIGNMENT.
        * decl.c (cxx_init_decl_processing): New.

2016-10-10  Jason Merrill  <jason@redhat.com>

        PR c++/77890
        PR c++/77912
        * pt.c (do_class_deduction): Set cp_unevaluated_operand.
        (tsubst) [TEMPLATE_TYPE_PARM]: Copy CLASS_PLACEHOLDER_TEMPLATE.

2016-10-08  Jason Merrill  <jason@redhat.com>

        * cp-gimplify.c (cp_fold): Add variable name.

        * cp-gimplify.c (cp_fold): Distribute cp_truthvalue_conversion
        into COND_EXPR.

2016-10-07  Jason Merrill  <jason@redhat.com>

        Further P0135 refinement.
        * call.c (build_user_type_conversion_1): Consider conversions from
        a single element in an initializer-list.
        (build_temp): Undo early_elide_copy change.
        (build_over_call): Check that we don't try to copy a TARGET_EXPR
        in C++17 mode.  Set user_conv_p here.
        (convert_like_real): Not here.
        (check_self_delegation): Split out from...
        (build_special_member_call): ...here.  Handle C++17 copy elision.
        * cvt.c (early_elide_copy): Remove.
        (ocp_convert): Undo early_elide_copy change.
        * except.c (build_throw): Likewise.
        * init.c (expand_default_init): Likewise.
        * typeck.c (cp_build_modify_expr): Likewise.

2016-10-07  Nathan Sidwell  <nathan@acm.org>

        PR c++/64433
        DR1658, DR1611
        * init.c (emit_mem_initializers): Don't construct vbases of
        abstract classes.
        (push_base_cleanups): Don't push vbase cleanups for abstract class
        when in C++14 mode.
        * method.c (synthethesized_method_walk): Don't walk vbases of
        abstract classes when in C++14 mode.

2016-10-07  Jakub Jelinek  <jakub@redhat.com>

        Implement LWG2296 helper intrinsic
        * parser.c (cp_parser_postfix_expression): Handle RID_ADDRESSOF.
        * cp-objcp-common.c (cp_common_init_ts): Handle ADDRESSOF_EXPR.
        * constexpr.c (potential_constant_expression_1): Likewise.
        * error.c (dump_expr): Likewise.
        * typeck.c (cp_build_addressof): New function.
        * cp-tree.h (cp_build_addressof): Declare.
        * cxx-pretty-print.h (pp_cxx_addressof_expression): Declare.
        * cp-tree.def (ADDRESSOF_EXPR): New tree code.
        * cxx-pretty-print.c (cxx_pretty_printer::primary_expression): Handle
        ADDRESSOF_EXPR.  Add __builtin_addressof and
        __has_unique_object_representations into syntax in function comment.
        (pp_cxx_addressof_expression): New function.
        * pt.c (tsubst_copy_and_build): Handle ADDRESSOF_EXPR.

2016-10-07  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR c++/77700
        * parser.c (cp_parser_base_specifier): Fix a warning.

2016-10-07  Bernd Schmidt  <bschmidt@redhat.com>

        PR c++/69733
        * decl.c (grokdeclarator): Try to find the correct location for an
        ignored qualifier.

2016-10-07  Martin Liska  <mliska@suse.cz>

        * lambda.c (maybe_add_lambda_conv_op): Set default value.

2016-10-06  Jason Merrill  <jason@redhat.com>

        * call.c (build_temp, convert_like_real): Don't re-copy
        TARGET_EXPR.  Handle packed fields.
        (build_x_va_arg): Wrap it in a TARGET_EXPR.
        (build_over_call): Add sanity check.
        * cvt.c (early_elide_copy): New.
        (ocp_convert): Use it.
        * except.c (build_throw): Use it.
        * init.c (get_nsdmi): Put back the TARGET_EXPR.
        (expand_default_init): Call early_elide_copy.
        * typeck.c (cp_build_modify_expr): Call early_elide_copy.

2016-10-06  Jakub Jelinek  <jakub@redhat.com>

        Implement P0258R2 - helper for C++17
        std::has_unique_object_representations trait
        * cp-tree.h (enum cp_trait_kind): Add
        CPTK_HAS_UNIQUE_OBJ_REPRESENTATIONS.
        (struct lang_type_class): Add unique_obj_representations
        and unique_obj_representations_set bitfields.
        (CLASSTYPE_UNIQUE_OBJ_REPRESENTATIONS,
        CLASSTYPE_UNIQUE_OBJ_REPRESENTATIONS_SET): Define.
        (type_has_unique_obj_representations): Declare.
        * parser.c (cp_parser_primary_expression): Handle
        RID_HAS_UNIQUE_OBJ_REPRESENTATIONS.
        (cp_parser_trait_expr): Likewise.  Formatting fix.
        * semantics.c (trait_expr_value, finish_trait_expr): Handle
        CPTK_HAS_UNIQUE_OBJ_REPRESENTATIONS.
        * tree.c (type_has_unique_obj_representations): New function.
        (record_has_unique_obj_representations): New function.
        * cxx-pretty-print.c (pp_cxx_trait_expression): Handle
        CPTK_HAS_UNIQUE_OBJ_REPRESENTATIONS.

2016-10-05  Jason Merrill  <jason@redhat.com>

        Implement P0135R1, Guaranteed copy elision.
        * cvt.c (ocp_convert): Don't re-copy a TARGET_EXPR in C++17.

        PR c++/54293
        * call.c (reference_binding): Fix binding to member of temporary.

        * call.c (extend_ref_init_temps): Fix TARGET_EXPR handling.

        * parser.c (cp_parser_skip_to_end_of_statement): Add missing break.

        * semantics.c (finish_compound_literal): Handle class placeholder.

2016-10-05  Marek Polacek  <polacek@redhat.com>

        Implement P0305R1, Selection statements with initializer.
        * cp-array-notation.c (create_an_loop): Call finish_init_stmt
        instead of finish_for_init_stmt.
        * cp-tree.h (finish_for_init_stmt): Rename to finish_init_stmt.
        * decl.c (poplevel): Adjust a comment.
        * init.c (build_vec_init): Call finish_init_stmt instead of
        finish_for_init_stmt.
        * name-lookup.c (pushdecl_maybe_friend_1): Adjust a comment.
        * name-lookup.h (enum scope_kind): Likewise.
        * parser.c (cp_parser_statement): Update commentary.
        (cp_parser_init_statement_p): New function.
        (cp_parser_selection_statement): Parse the optional init-statement.
        (cp_parser_for): Call finish_init_stmt instead of finish_for_init_stmt.
        (cp_parser_c_for): Likewise.
        (cp_convert_range_for): Call finish_init_stmt instead of finish_for_init_stmt.
        (cp_parser_range_for_member_function): Update commentary.
        (cp_parser_iteration_statement):
        (cp_parser_for_init_statement): Rename to cp_parser_init_statement.
        * pt.c (tsubst_omp_for_iterator): Update commentary.
        (tsubst_expr): Call finish_init_stmt instead of finish_for_init_stmt.
        * semantics.c (finish_for_init_stmt): Rename to finish_init_stmt.
        Update commentary.

2016-10-04  Jason Merrill  <jason@redhat.com>

        PR c++/77852
        * pt.c (do_class_deduction): Handle list-initialization.
        (do_auto_deduction): Call it sooner.
        (build_deduction_guide): Use tsubst_arg_types.
        (rewrite_template_parm): Don't copy_type.

        PR c++/77775
        * constexpr.c (cxx_eval_component_reference): Use name matching
        for PMFs.

        Implement P0091R2, Template argument deduction for class templates.
        * parser.c (cp_parser_simple_type_specifier): Parse class placeholder.
        Use the location of the beginning of the type-specifier.
        (cp_parser_init_declarator): Parse deduction guide.
        (cp_parser_diagnose_invalid_type_name): Mention class deduction.
        (cp_parser_type_id_1): Don't accept class placeholder as template arg.
        * cp-tree.h (CLASS_PLACEHOLDER_TEMPLATE): New.
        * decl.c (grokdeclarator): Check for uninitialized auto here.
        (start_decl_1): Not here.
        (cp_finish_decl): Or here.  Don't collapse a list when doing
        class deduction.
        (grokfndecl): Check deduction guide scope and body.
        * error.c (dump_decl, dump_function_decl, dump_function_name):
        Handle deduction guides.
        * pt.c (make_template_placeholder, do_class_deduction): New.
        (build_deduction_guide, rewrite_template_parm): New.
        (dguide_name, dguide_name_p, deduction_guide_p): New.
        (do_auto_deduction): Call do_class_deduction.
        (splice_late_return_type, is_auto): Handle class placeholders.
        (template_parms_level_to_args): Split from template_parms_to_args.
        (tsubst_template_parms_level): Split from tsubst_template_parms.
        * typeck2.c (build_functional_cast): Handle class placeholder.

2016-10-04  Martin Sebor  <msebor@redhat.com>

        PR c++/77804
        * init.c (warn_placement_new_too_small): Avoid assuming an array type
        has a constant size.

2016-10-04  Jakub Jelinek  <jakub@redhat.com>

        PR c++/77791
        * parser.c (cp_parser_lambda_declarator_opt): Only pedwarn
        for C++11 on decls in the param_list.  Test cxx_dialect < cxx14 before
        the loop just once.

        * cp-tree.h (enum cp_tree_index): Remove CPTI_JAVA_*,
        CPTI_LANG_NAME_JAVA and CPTI_JCLASS.
        (java_byte_type_node, java_short_type_node, java_int_type_node,
        java_long_type_node, java_float_type_node, java_double_type_node,
        java_char_type_node, java_boolean_type_node, lang_name_java,
        jclass_node): Remove.
        (enum languages): Remove lang_java.
        (TYPE_FOR_JAVA): Remove.
        (struct lang_type_class): Remove java_interface bit-field.
        (TYPE_JAVA_INTERFACE): Remove.
        (pragma_java_exceptions): Remove.
        (check_java_method, build_java_class_ref): Remove prototypes.
        * name-lookup.c (pushtag_1): Don't set TYPE_FOR_JAVA.
        * decl2.c (acceptable_java_type, check_java_method): Remove.
        (import_export_decl): Remove TYPE_FOR_JAVA handling.
        (build_java_method_aliases): Remove.
        (c_parse_final_cleanups): Don't call build_java_method_aliases.
        (possibly_inlined_p): Don't test pragma_java_exceptions.
        * init.c (build_new_1): Remove TYPE_FOR_JAVA handling.
        (build_java_class_ref): Remove.
        * pt.c (maybe_new_partial_specialization, lookup_template_class_1,
        instantiate_class_template_1): Don't copy TYPE_FOR_JAVA.
        * except.c (eh_type_info): Remove java type handling.
        (decl_is_java_type, choose_personality_routine): Remove.
        (initialize_handler_parm): Don't call choose_personality_routine.
        (expand_start_catch_block): Don't handle java types.
        (build_throw): Likewise.
        * cp-lang.c (cp_eh_personality): Don't handle pragma_java_exceptions.
        * typeck.c (structural_comptypes): Don't compare TYPE_FOR_JAVA.
        * call.c (build_over_call): Don't handle TYPE_JAVA_INTERFACE.
        (java_iface_lookup_fn): Remove.
        (build_java_interface_fn_ref): Remove.
        * tree.c (cxx_attribute_table): Remove java_interface.
        (handle_java_interface_attribute): Remove.
        * lex.c (pragma_java_exceptions): Remove.
        (init_cp_pragma): Don't register GCC java_exceptions pragma.
        (handle_pragma_java_exceptions): Remove.
        (retrofit_lang_decl): Don't handle lang_name_java.
        * method.c (implicitly_declare_fn): Don't handle TYPE_FOR_JAVA.
        * error.c (language_to_string): Don't handle lang_java.
        * decl.c (record_builtin_java_type): Remove.
        (initialize_predefined_identifiers): Remove Java.
        (cxx_init_decl_processing): Remove java_*_type_node.
        (cp_finish_decl): Don't handle TYPE_FOR_JAVA.
        (grokfndecl): Likewise.
        (check_special_function_return_type): Likewise.
        (grokdeclarator): Don't set TYPE_FOR_JAVA.
        (grokparms): Don't handle TYPE_FOR_JAVA.
        (xref_basetypes): Likewise.
        (check_function_type): Likewise.
        (finish_constructor_body): Likewise.
        * mangle.c (write_builtin_type): Don't handle TYPE_FOR_JAVA
        and java_*_type_node.
        (write_bare_function_type): Don't handle TYPE_FOR_JAVA.
        (write_java_integer_type_codes): Remove.
        * class.c (add_method): Don't handle TYPE_FOR_JAVA.
        (add_implicitly_declared_members, determine_key_method,
        finish_struct_1): Likewise.
        (push_lang_context): Don't handle lang_name_java.

2016-10-03  Marek Polacek  <polacek@redhat.com>

        Core 903
        * typeck.c (cp_build_binary_op): Pass original operands to
        null_ptr_cst_p, not those after the default conversions.

2016-10-03  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * parser.c (cp_parser_condition): Fix a warning.

2016-09-29  Jakub Jelinek  <jakub@redhat.com>

        Implement P0001R1 - C++17 removal of register storage class specifier
        * decl.c (cp_finish_decl): Diagnose register storage class
        on vars except when used in GNU global or local register variable
        extension.
        (grokdeclarator): Diagnose register storage class on parameters.
        * except.c (expand_start_catch_block): Set DECL_REGISTER only
        after cp_finish_decl call.

2016-09-29  Marek Polacek  <polacek@redhat.com>

        * rtti.c (involves_incomplete_p): Add fall through comment.

2016-09-28  Jakub Jelinek  <jakub@redhat.com>

        PR c++/77467
        * constexpr.c (enum constexpr_switch_state): New.
        (struct constexpr_ctx): Add css_state field.
        (label_matches): Add CTX and STMT arguments, remove I and
        DEFAULT_LABEL.  For CASE_LABEL_EXPR assert ctx->css_state != NULL,
        handle default labels according to css_state.
        (cxx_eval_statement_list): Remove statement skipping, label_matches
        and default_label handling code.
        (cxx_eval_loop_expr): Exit after first iteration even if
        switches (jump_target).
        (cxx_eval_switch_expr): Set up css_state field in ctx, if default
        label has been seen in the body, but no cases matched, evaluate
        the body second time.
        (cxx_eval_constant_expression): Handle stmt skipping and label_matches
        here.  Handle PREDICT_EXPR.  For MODIFY_EXPR or INIT_EXPR, assert
        statement is not skipped.  For COND_EXPR during skipping, don't
        evaluate condition, just the then block and if still skipping at the
        end also the else block.
        (cxx_eval_outermost_constant_expr): Adjust constexpr_ctx initializer.
        (is_sub_constant_expr): Likewise.

2016-09-27  Jakub Jelinek  <jakub@redhat.com>

        Implement P0018R3, C++17 lambda capture of *this by value as [=,*this]
        * parser.c (cp_parser_lambda_introducer): Formatting fix.  Pass
        true instead of false as by_reference_p to add_capture for 'this'.
        Parse '*this' simple-capture.
        * lambda.c (build_capture_proxy): Handle '*this' capture by value.
        (add_capture): Adjust function comment.  For id == this_identifier,
        treat by_reference_p as capturing '*this' by reference, i.e. 'this'
        by value, and !by_reference_p as capturing '*this' by value.
        (add_default_capture): For implicit 'this' capture, always pass
        by_reference_p true rather than false.

        PR c++/77722
        * cp-gimplify.c (cp_ubsan_maybe_instrument_return): Instrument also
        functions that have just a STATEMENT_LIST instead of BIND_EXPR, or
        BIND_EXPR with some statement rather than STATEMENT_LIST as body.

2016-09-26  Nathan Sidwell  <nathan@acm.org>

        * init.c (expand_default_init): Fix } indentation.
        * method.c (process_subob_fn): Simplify control structure to
        remove gotos.
        (implicitly_declare_fn): Remove duplicated lambda ctor check.

2016-09-26  Marek Polacek  <polacek@redhat.com>

        PR c/7652
        * parser.c (cp_parser_storage_class_specifier_opt): Add
        gcc_fallthrough.
        (cp_parser_skip_to_end_of_template_parameter_list): Likewise.
        (cp_parser_cache_defarg): Likewise.
        (cp_parser_omp_for_cond): Likewise.
        * semantics.c (finish_decltype_type): Likewise.
        * typeck.c (structural_comptypes): Likewise.
        (cp_build_binary_op): Likewise.
        (cp_build_modify_expr): Likewise.

2016-09-26  Marek Polacek  <polacek@redhat.com>

        PR c/7652
        * constexpr.c (cxx_eval_internal_function): Handle IFN_FALLTHROUGH.
        (potential_constant_expression_1): Likewise.
        * constraint.cc (function_concept_check_p): Check fn for null.
        * parser.c (cp_parser_expression_statement): Handle attribute
        fallthrough.
        (cp_parser_statement): Likewise.
        (cp_parser_label_for_labeled_statement): Set FALLTHROUGH_LABEL_P on
        labels.
        (cp_parser_std_attribute): Handle fallthrough attribute.
        (cp_parser_check_std_attribute): Add %< %> quotes.
        * pt.c (tsubst_copy_and_build): Handle internal functions.
        (instantiation_dependent_scope_ref_p): Return if the expression is
        null.

2016-09-24  Marek Polacek  <polacek@redhat.com>

        PR c/77490
        * typeck.c (cp_build_unary_op): Warn about bit not on expressions that
        have boolean value.

2016-09-23  Jakub Jelinek  <jakub@redhat.com>

        Implement P0138R2, C++17 construction rules for enum class values
        * cp-tree.h (is_direct_enum_init): Declare.
        * decl.c (is_direct_enum_init): New function.
        (reshape_init): Use it.
        * typeck.c (convert_for_assignment): Likewise.

        * Make-lang.in (check-c++1z): Pass RUNTESTFLAGS down to
        make check-g++.

        * constexpr.c (call_stack): Remove unnecessary
        = vNULL initialization of file scope vec.

        * name-lookup.c (store_bindings, store_class_bindings): Don't
        initialize static local bindings_need_stored to vNULL.

        * typeck2.c (process_init_constructor_record): Use
        CONSTRUCTOR_NELTS (...) instead of
        vec_safe_length (CONSTRUCTOR_ELTS (...)).
        * decl.c (reshape_init_r): Likewise.
        (check_initializer): Likewise.

2016-09-22  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/71979
        * class.c (build_base_path): Allow for lookup_base returning
        NULL_TREE.

2016-09-21  Jason Merrill  <jason@redhat.com>

        Core 903
        * call.c (null_ptr_cst_p): Check char_type_p.

2016-09-21  Jakub Jelinek  <jakub@redhat.com>

        PR c++/77651
        * init.c (build_new_1): Don't suggest to use -faligned-new if
        aligned_new_threshold is non-zero.
        (type_has_new_extended_alignment): Change aligned_new_threshhold
        to aligned_new_threshold.
        * call.c (second_parm_is_size_t, aligned_allocation_fn_p,
        aligned_deallocation_fn_p, build_op_delete_call): Likewise.
        * decl.c (cxx_init_decl_processing): Likewise.

2016-09-20  Jakub Jelinek  <jakub@redhat.com>

        PR c++/77626
        * constexpr.c (cxx_fold_indirect_ref): Don't call byte_position on
        FIELD_DECLs with error_mark_node type.  Remove useless break; after
        return.

        PR c++/77638
        * parser.c (cp_parser_template_declaration_after_parameter): For 2
        argument operator"" template set ok to false for
        parm == error_mark_node.

        PR c++/77637
        * parser.c (cp_parser_std_attribute_list): Reject ... without
        preceding attribute.

2016-09-19  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR c++/77434
        * cvt.c (cp_convert_and_check): Suppress Wint-in-bool-context here.

2016-09-16  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/77639
        * parser.c (cp_parser_class_head): When
        processing_template_parmlist, don't assume that the
        class-head may start an explicit specialization.

2016-09-16  Jakub Jelinek  <jakub@redhat.com>

        PR c++/77482
        * error.c (dump_simple_decl): Only check DECL_DECLARED_CONCEPT_P
        if DECL_LANG_SPECIFIC is non-NULL.  Fix up formatting.

        PR c++/77338
        * constexpr.c (cxx_eval_constant_expression) <case PARM_DECL>: Only
        call is_really_empty_class on complete types.

        PR c++/77375
        * class.c (check_bases): Set CLASSTYPE_HAS_MUTABLE if any
        TYPE_HAS_MUTABLE_P for any bases.

2016-09-16  Jason Merrill  <jason@redhat.com>

        * class.c (check_bases, set_one_vmethod_tm_attributes): Use
        least_bit_hwi.
        * decl.c (cxx_init_decl_processing): Use pow2p_hwi.
        * parser.c (cp_parser_cilk_simd_vectorlength): Use pow2p_hwi.

2016-09-14  Jakub Jelinek  <jakub@redhat.com>

        PR c++/77549
        * name-lookup.c (consider_binding_level): Look through TREE_LIST
        and OVERLOAD.

2016-09-14  Marek Polacek  <polacek@redhat.com>

        * typeck.c (cp_build_unary_op): Diagnose incrementing boolean
        expressions.  Tweak an error message.

2016-09-14  Marek Polacek  <polacek@redhat.com>

        * cp-tree.h (cp_build_unary_op): Change nonconvert parameter type to
        bool.
        * decl2.c (one_static_initialization_or_destruction): Use true instead
        of 1.
        * init.c (build_vec_init): Use false instead of 0.
        * pt.c (tsubst_copy_and_build): Likewise.
        * semantics.c (simplify_loop_decl_cond): Likewise.
        * typeck.c (rationalize_conditional_expr): Likewise.
        (cp_build_binary_op): Use true instead of 1.
        (cp_build_unary_op): Change nonconvert parameter type to bool.  Use true
        instead of 1.
        (build_unary_op): Change nonconvert parameter type to bool.
        (unary_complex_lvalue): Use false instead of 0.

2016-09-13  Jakub Jelinek  <jakub@redhat.com>

        Implement P0028R4, C++17 using attribute namespaces without repetition
        * parser.c (cp_parser_std_attribute): Add ATTR_NS argument.  Diagnose
        non-NULL ATTR_NS with scoped attribute token.  Handle non-NULL
        ATTR_NS with non-scoped attribute tokens.  Allow named ops in
        identifier after ::.
        (cp_parser_std_attribute_list): Add ATTR_NS argument, pass it down
        to cp_parser_std_attribute calls.
        (cp_parser_std_attribute_spec): Parse optional C++17
        attribute-using-prefix, adjust grammar in function comment.

        PR c++/77553
        * constexpr.c (cxx_fold_pointer_plus_expression): New function.
        (cxx_eval_binary_expression): Use it for POINTER_PLUS_EXPR.
        (cxx_eval_pointer_plus_expression): Remove.
        (cxx_eval_constant_expression) <case POINTER_PLUS_EXPR>: Don't
        call cxx_eval_pointer_plus_expression.

2016-09-13  David Malcolm  <dmalcolm@redhat.com>

        * parser.c (cp_parser_class_specifier_1): Update for renaming of
        add_fixit_insert to add_fixit_insert_before.
        (cp_parser_class_head): Likewise.

2016-09-12  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR c++/77496
        * call.c (build_conditional_expr_1): Call warn_for_omitted_condop.
        * class.c (instantiate_type): Look through the SAVE_EXPR.

2016-09-09  Jason Merrill  <jason@redhat.com>

        Implement P0035R4, C++17 new of over-aligned types.
        * cp-tree.h (enum cp_tree_index): Add CPTI_ALIGN_TYPE.
        (align_type_node): New macro.
        * call.c (build_operator_new_call): Handle C++17 aligned new.
        (second_parm_is_size_t, build_op_delete_call): Likewise.
        (non_placement_deallocation_fn_p): Likewise. Rename to
        usual_deallocation_fn_p.
        (aligned_allocation_fn_p, aligned_deallocation_fn_p): New.
        * decl.c (cxx_init_decl_processing): Add aligned new support.
        * init.c (type_has_new_extended_alignment): New.
        (build_new_1): Handle aligned new.
        * tree.c (vec_copy_and_insert): New.

2016-09-02  Jakub Jelinek  <jakub@redhat.com>

        PR sanitizer/77396
        * decl2.c (do_static_initialization_or_destruction): Only
        call asan_dynamic_init_call if INITP is true.

2016-09-01  Martin Sebor  <msebor@redhat.com>

        * mangle.c: Increase buffer size to guarantee it fits the output
        of the formatted function regardless of its arguments.

2016-09-01  Marek Polacek  <polacek@redhat.com>

        PR c/7652
        * error.c (dump_type): Fix falls through comment.
        (dump_decl): Likewise.
        (dump_expr): Likewise.

2016-08-30  David Malcolm  <dmalcolm@redhat.com>

        * parser.c (cp_parser_enclosed_template_argument_list): Add fix-it
        hint to ">>" within nested template argument list error.

2016-08-30  David Malcolm  <dmalcolm@redhat.com>

        * name-lookup.c (suggest_alternatives_for): Use add_fixit_replace
        rather than add_fixit_misspelled_id.
        * parser.c (cp_parser_diagnose_invalid_type_name): Likewise.

2016-08-29  Jason Merrill  <jason@redhat.com>

        PR c++/77379
        * mangle.c (maybe_check_abi_tags): Add version parm, handle thunks.
        (mangle_thunk): Add thunk parameter.
        * method.c (finish_thunk): Pass it.
        * cp-tree.h: Declare it.

2016-08-15  Jason Merrill  <jason@redhat.com>

        Avoid calling a trivial default constructor.
        * class.c (default_ctor_p): New.
        (in_class_defaulted_default_constructor): Use it.
        (type_has_non_user_provided_default_constructor): Use it.
        * call.c (build_over_call): Handle trivial default constructor.
        * cp-tree.h: Declare default_ctor_p.

        PR c++/57728
        * pt.c (do_type_instantiation): Don't mess with non-user-provided
        member functions.

2016-08-25  Marek Polacek  <polacek@redhat.com>

        * parser.c (cp_parser_binary_expression): Pass LHS to
        warn_logical_not_parentheses.

2016-08-18  Marek Polacek  <polacek@redhat.com>

        PR c/7652
        * call.c (add_builtin_candidate): Add gcc_fallthrough.
        * cxx-pretty-print.c (pp_cxx_unqualified_id): Likewise.
        * parser.c (cp_parser_skip_to_end_of_statement): Likewise.
        (cp_parser_cache_defarg): Likewise.

2016-08-12  Marek Polacek  <polacek@redhat.com>

        PR c/7652
        * call.c (add_builtin_candidate): Add FALLTHRU.
        (build_integral_nontype_arg_conv): Adjust fall through comment.
        (build_new_op_1): Add FALLTHRU.
        (convert_like_real): Adjust fall through comment.
        * class.c (fixed_type_or_null): Likewise.
        * constexpr.c (cxx_eval_constant_expression): Likewise.
        (potential_constant_expression_1): Likewise.  Add FALLTHRU.
        * cp-gimplify.c (cp_gimplify_expr): Adjust fall through comment.
        (cp_fold): Add FALLTHRU.
        * cvt.c (build_expr_type_conversion): Adjust fall through comment.
        * cxx-pretty-print.c (pp_cxx_unqualified_id): Add FALLTHRU.
        (pp_cxx_qualified_id): Likewise.
        (cxx_pretty_printer::constant): Adjust fall through comment.
        (cxx_pretty_printer::primary_expression): Add FALLTHRU.
        (pp_cxx_pm_expression): Adjust fall through comment.
        (cxx_pretty_printer::expression): Add FALLTHRU.
        (cxx_pretty_printer::declaration_specifiers): Reformat code.
        (pp_cxx_type_specifier_seq): Adjust fall through comment.
        (pp_cxx_ptr_operator): Likewise.  Add FALLTHRU.
        * error.c (dump_type): Adjust fall through comment.
        (dump_decl): Likewise.
        * mangle.c (write_type): Likewise.
        * method.c (synthesized_method_walk): Add FALLTHRU.
        * name-lookup.c (arg_assoc_type): Likewise.
        * parser.c (cp_lexer_print_token): Adjust fall through comment.
        (cp_parser_primary_expression): Add FALLTHRU.
        (cp_parser_operator): Likewise.
        * pt.c (find_parameter_packs_r): Likewise.
        (tsubst_aggr_type): Adjust fall through comment.
        * semantics.c (finish_omp_clauses): Add FALLTHRU.
        * tree.c (lvalue_kind): Likewise.

2016-08-12  Alexandre Oliva  <aoliva@redhat.com>

        PR debug/63240
        * cp-objcp-common.c (cp_function_decl_defaulted): New.
        (cp_function_decl_explicit_p): Const_tree-ify.
        (cp_function_decl_deleted_p): Likewise.
        * cp-objcp-common.h (cp_function_decl_defaulted): Declare.
        (cp_function_decl_explicit_p): Const_tree-ify.
        (cp_function_decl_deleted_p): Likewise.
        (LANG_HOOKS_FUNCTION_DECL_DEFAULTED): Redefine.

2016-08-11  Jakub Jelinek  <jakub@redhat.com>

        PR c++/72868
        * constexpr.c (label_matches): Handle case range expressions.

2016-08-11  Jason Merrill  <jason@redhat.com>

        PR c++/73456
        * logic.cc (non_atomic_constraint_p): Handle EXPR_PACK_EXPANSION.

2016-08-10  Jason Merrill  <jason@redhat.com>

        Implement C++17 constexpr if.
        * cp-tree.h (IF_STMT_CONSTEXPR_P): New.
        * name-lookup.c (push_to_top_level, pop_from_top_level_1): Handle it.
        * parser.h (struct cp_parser): Add in_discarded_stmt field.
        * parser.c (cp_parser_selection_statement): Handle 'if constexpr'.
        (cp_parser_jump_statement): Avoid deducing from a discarded return.
        * pt.c (tsubst_expr): Only instantiate taken branch of constexpr if.
        * semantics.c (begin_if_stmt): Set the binding level this_entity.
        (finish_if_stmt_cond): Require the condition of a
        constexpr if to be constant.
        * decl.c (level_for_constexpr_if): New.
        (named_label_entry): Add in_constexpr_if field.
        (poplevel_named_label_1): Set it.
        (check_goto): Check it.
        (check_previous_goto_1): Check level_for_constexpr_if.

2016-08-09  Jason Merrill  <jason@redhat.com>

        PR c++/68703
        * decl2.c (any_dependent_type_attributes_p): New.
        * pt.c (dependent_type_p_r, type_dependent_expression_p): Check it.
        * semantics.c (finish_id_expression): Check it.
        * typeck.c (finish_class_member_access_expr): Check it.

        PR c++/71712
        * class.c (check_abi_tags): Don't duplicate tags for conversion ops.

        Adjust mangling of ABI tags on class template member functions.
        * class.c (missing_abi_tags): New.
        (check_abi_tags): Don't check template. Add just_checking mode.
        * mangle.c (abi_flag_at_least, any_abi_below, equal_abi_tags): New.
        (sorted_abi_tags): Split out from write_abi_tags.
        (struct releasing_vec): New.
        (write_unqualified_name): Only look for the primary
        template for types.  Implement backward compatibility.

        PR c++/72849
        * constexpr.c (cxx_eval_constant_expression): Check
        COMPLETE_TYPE_P before calling is_really_empty_class.
        * class.c (is_really_empty_class): Don't call complete_type.

        PR c++/56701
        * typeck.c (cp_build_addr_expr_1): Remove special *this handling.

2016-08-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/72809
        * rtti.c (get_pseudo_ti_index): Return TK_CLASS_TYPE for
        builtin aggregate types without TYPE_BINFO.

2016-08-08  Jason Merrill  <jason@redhat.com>

        Implement C++17 constexpr lambda.
        * class.c (finalize_literal_type_property): Handle lambdas.
        * constexpr.c (is_valid_constexpr_fn): Likewise.  No longer static.
        (explain_invalid_constexpr_fn, cxx_eval_call_expression): Handle
        lambdas.
        (cxx_eval_constant_expression): Handle capture proxy.
        (var_in_constexpr_fn): Don't check for C++14.
        (var_in_maybe_constexpr_fn): New.
        (potential_constant_expression_1): Use it.  Check DECL_EXPR for
        declarations not allowed in constexpr function.  Handle
        STATIC_ASSERT, RANGE_FOR_STMT.
        * decl.c (make_rtl_for_nonlocal_decl): Use var_in_maybe_constexpr_fn.
        (finish_function): Set DECL_DECLARED_CONSTEXPR_P on lambda members.
        * lambda.c (begin_lambda_type): Set CLASSTYPE_LITERAL_P.
        (maybe_add_lambda_conv_op): Clear thunk CALL_EXPR location.
        (lambda_static_thunk_p): New.
        * parser.c (cp_keyword_starts_decl_specifier_p): Add RID_CONSTEXPR.
        (CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR): New enumerator.
        (cp_parser_decl_specifier_seq): Handle it.
        (cp_parser_lambda_declarator_opt): Use cp_parser_decl_specifier_seq.
        * pt.c (instantiate_class_template_1): Set CLASSTYPE_LITERAL_P.
        (tsubst_copy_and_build) [CALL_EXPR]: Propagate CALL_FROM_THUNK_P.
        * error.c (dump_function_decl): Check TFF_NO_TEMPLATE_BINDINGS.
        (dump_expr) [FUNCTION_DECL]: Pass it.

2016-08-08  Jason Merrill  <jason@redhat.com>

        PR c++/67131
        * class.c (is_really_empty_class): Call complete_type.
        * constexpr.c (cxx_eval_constant_expression): Check
        is_really_empty_class.
        (potential_constant_expression_1): Likewise.  Check for error type.

2016-08-08  Jakub Jelinek  <jakub@redhat.com>

        PR c++/58706
        * parser.c: Include tree-iterator.h.
        (cp_parser_omp_for_loop_init): Move lambda DECL_EXPRs from init
        to FOR_BLOCK.
        (cp_parser_omp_for_loop): Handle non-STATEMENT_LIST FOR_BLOCK
        entries.

2016-08-06  Jonathan Wakely  <jwakely@redhat.com>

        * call.c (convert_like_real): Harmonize diagnostics for invalid
        reference binding.

2016-08-05  Martin Sebor  <msebor@redhat.com>

        * constexpr.c (cxx_eval_store_expression): Remove hyphen from
        the spelling of "constant-expression" in diagnostic messages
        for consistency.
        (cxx_eval_constant_expression): Same.
        (cxx_eval_outermost_constant_expr): Same.
        (potential_constant_expression_1): Same.

2016-08-05  Nathan Sidwell  <nathan@acm.org>

        PR c++/68724
        * pt.c (unify): TRAIT_EXPR is an expr.

2016-08-04  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/72800
        * lambda.c (add_capture): Check lambda_capture_field_type return
        value for error_mark_node.

2016-08-04  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/72759
        * pt.c (tsubst_qualified_id): Return error_mark_node if
        template_args is error_mark_node.

2016-08-04  Jason Merrill  <jason@redhat.com>

        PR c++/72415
        * pt.c (tsubst_pack_expansion): Pull a single pack expansion out
        of the TREE_VEC.

        * cp-tree.h (TYPE_UNNAMED_P): Rename from TYPE_ANONYMOUS_P.
        (TYPE_WAS_UNNAMED): Rename from TYPE_WAS_ANONYMOUS.
        * class.c, decl.c, decl2.c, error.c, lambda.c, mangle.c,
        name-lookup.c, parser.c, pt.c, semantics.c, tree.c: Adjust.

        PR c++/72796
        * typeck.c (finish_class_member_access_expr): Avoid stripping
        SCOPE_REF to dependent base.

2016-08-04  Thomas Schwinge  <thomas@codesourcery.com>

        * parser.c (cp_ensure_no_oacc_routine): Improve diagnostics.
        (cp_parser_late_parsing_cilk_simd_fn_info): Fix diagnostics.
        (cp_parser_late_parsing_oacc_routine, cp_finalize_oacc_routine):
        Simplify code, and improve diagnostics.
        (cp_parser_oacc_routine): Likewise.  Move pragma context
        checking...
        (cp_parser_pragma): ... here.

        * parser.h (struct cp_omp_declare_simd_data): New.
        (struct cp_parser): Use it for oacc_routine member.
        * parser.c (cp_ensure_no_oacc_routine, cp_parser_oacc_routine)
        (cp_parser_late_parsing_oacc_routine, cp_finalize_oacc_routine):
        Use it.  Simplify code.
        (cp_parser_new): Initialize all members pointing to special
        parsing data structures.
        (cp_parser_cilk_simd_fn_vector_attrs): Initialize
        parser->cilk_simd_fn_info->clauses.
        (cp_parser_omp_declare_simd): Initialize
        parser->omp_declare_simd->clauses.
        (cp_parser_late_parsing_omp_declare_simd): Simplify code.

2016-08-04  Marek Polacek  <polacek@redhat.com>

        PR c++/70229
        * constexpr.c (check_constexpr_ctor_body_1): Allow typedef
        declarations.

2016-08-01  Jason Merrill  <jason@redhat.com>

        * mangle.c (mangle_decl): Warn about mangled name change even if
        DECL_REALLY_EXTERN.

        * mangle.c (get_abi_tags): New.
        (find_substitution, write_unqualified_name, write_abi_tags)
        (maybe_check_abi_tags): Use it.

        * mangle.c (mangle_decl): Fix mangled name change warning.

        PR c++/72766
        * constexpr.c (cxx_eval_pointer_plus_expression): Check constancy
        of nelts.
        * cp-gimplify.c (cp_fully_fold): Only maybe_constant_value in
        C++11 and up.

2016-07-30  Martin Sebor  <msebor@redhat.com>

        PR c++/60760
        PR c++/71091
        * constexpr.c (cxx_eval_binary_expression): Reject invalid expressions
        involving null pointers.
        (cxx_eval_component_reference): Reject null pointer dereferences.
        (cxx_eval_indirect_ref): Reject indirecting through null pointers.
        (cxx_eval_constant_expression): Reject invalid expressions involving
        null pointers.

2016-07-29  Marek Polacek  <polacek@redhat.com>

        PR c/71926
        * semantics.c (maybe_convert_cond): Use the location of COND for the
        parentheses warning.

2016-07-29  Jason Merrill  <jason@redhat.com>

        * decl.c (build_enumerator): Tweak diagnostic.

        PR c++/72457
        * init.c (expand_aggr_init_1): Only handle value-init of bases.
        * constexpr.c (build_data_member_initialization): Handle multiple
        initializers for the same field.

2016-07-28  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/71665
        * decl.c (build_enumerator): Check the type of the enumerator before
        calling cxx_constant_value.

2016-07-27  Jason Merrill  <jason@redhat.com>

        PR c++/71747
        * pt.c (get_partial_spec_bindings): Replace tparms and spec_args
        parameters with spec_tmpl.  Call push_tinst_level.
        (most_specialized_partial_spec): Adjust.
        (more_specialized_partial_spec): Adjust.

2016-07-25  Jason Merrill  <jason@redhat.com>

        PR c++/65970
        * cp-gimplify.c (genericize_cp_loop): Revert location change.

        PR c++/71837
        * lambda.c (add_capture): Leave a pack expansion in a TREE_LIST.
        (build_lambda_object): Call build_x_compound_expr_from_list.
        * pt.c (tsubst) [DECLTYPE_TYPE]: Likewise.

        PR c++/71833
        PR c++/54440
        * pt.c (coerce_template_parameter_pack): Fix logic for
        pack index.

        PR c++/65970
        * constexpr.c (cxx_eval_loop_expr): Count iterations.
        * cp-gimplify.c (genericize_cp_loop): Use start_locus even for
        infinite loops.

        PR c++/71972
        * constexpr.c (cxx_eval_array_reference): Handle looking for the
        value of an element we're currently modifying.

2016-07-24  Jason Merrill  <jason@redhat.com>

        PR c++/71515
        * pt.c (resolve_typename_type): Try to avoid calling
        currently_open_class.

2016-07-23  Jason Merrill  <jason@redhat.com>

        PR c++/66617
        * call.c (add_list_candidates): Handle VTT parm.
        (build_new_method_call_1): Likewise.

        PR c++/55922
        PR c++/63151
        * init.c (expand_aggr_init_1): Handle list-initialization from {}.

        PR c++/70709
        * class.c (walk_subobject_offsets): Handle 0-length array.

        PR c++/70778
        * pt.c (tsubst): Also substitute into the template of a
        BOUND_TEMPLATE_TEMPLATE_PARM.

        PR c++/71738
        * pt.c (lookup_template_class_1): Handle getting template from tsubst.

        PR c++/71350
        * decl.c (reshape_init_r): Check complain for missing braces warning.

2016-07-22  Jason Merrill  <jason@redhat.com>

        PR c++/71576
        * call.c (convert_like_real): Use lvalue_kind.

        PR c++/71748
        PR c++/52746
        * pt.c (tsubst_baselink): Call
        adjust_result_of_qualified_name_lookup for unqualified
        destructors.

2016-07-21  Jason Merrill  <jason@redhat.com>

        PR c++/69223
        * semantics.c (apply_deduced_return_type): Call
        complete_type_or_else before building the new RESULT_DECL.

        PR c++/71274
        * decl2.c (maybe_instantiate_decl): Split out from mark_used.
        (decl_constant_var_p): Use it instead.

        PR c++/71630
        * pt.c (instantiate_decl): Fix pattern_defined for namespace scope
        variable templates.

        PR c++/71913
        * call.c (unsafe_copy_elision_p): It's OK to elide when
        initializing an unknown object.

        * call.c (build_over_call): Check unsafe_copy_elision_p even for
        trivial constructors.
        * method.c (do_build_copy_constructor): Don't copy tail padding
        even in a trivial constructor.

2016-07-21  Jakub Jelinek  <jakub@redhat.com>

        PR c++/71728
        * constexpr.c (potential_constant_expression_1) <case GOTO_EXPR>:
        Replace assert with test, return false if the goto isn't break
        or continue.  Formatting fix.

2016-07-21  Richard Biener  <rguenther@suse.de>

        * vtable-class-hierarchy.c (vtv_generate_init_routine): Set
        DECL_IGNORED_P.

2016-07-21  Jakub Jelinek  <jakub@redhat.com>

        PR c++/71941
        * cp-gimplify.c (cp_genericize): For nested cp_genericize calls
        save/restore bc_label array.

2016-07-21  Jason Merrill  <jason@redhat.com>

        PR c++/70781
        * parser.c (cp_parser_lambda_expression): Unset OK if there was an
        error parsing the lambda-declarator.

        PR c++/71896
        * constexpr.c (cxx_eval_binary_expression): Handle comparison
        between lowered and unlowered PTRMEM_CST.

        PR c++/65168
        * typeck.c (cp_truthvalue_conversion): Compare pointers to nullptr.
        Don't set c_inhibit_evaluation_warnings.

        PR c++/71121
        * cp-gimplify.c (cp_fully_fold): First call maybe_constant_value.

2016-07-21  Andrew Sutton  <andrew.n.sutton@gmail.com>
            Jason Merrill  <jason@redhat.com>

        Improving concepts performance and diagnostics.
        PR c++/67565
        PR c++/67579
        PR c++/71843
        * cp-tree.def (CHECK_CONSTR): New.
        * cp-tree.h (CHECK_CONSTR_CONCEPT): New.
        (CHECK_CONSTR_ARGS): New.
        * constraint.cc (make_predicate_constraint): Remove in favor of
        normalize_expression.
        (resolve_constraint_check): Actually return error_mark_node when
        resolution fails.
        (resolve_variable_concept_check): Perform coercion as if processing
        a template. Also return errors on resolution failure.
        (lift_*): Remove all of these functions. Don't unnecessarily inline
        concepts.
        (learn_*): Add facilities to memoize implications for subsumption
        during normalization.
        (expanding_concept): New.
        (expand_concept): New. Return the inlined and normalized definition
        of a concept when needed.
        (transform_*, xform_*): Rename to normalize_* to better reflect the
        responsibility of those functions.
        (normalize_template_id_expression): Check for non-boolean operands
        when possible. Generate check constraints instead of normal variable
        references.
        (normalize_call_expression): Report errors when resolution fails.
        (check_for_logical_overloads): Rewrite this check to more accurately
        report the error.
        (normalize_atom): Check for overloaded calls and invalid types before
        determining if the expression refers to a concept.
        (build_constraints): Don't cache normalized constraints or decomposed
        assumptions.
        (finish_shorthand_constraint): Return a normalized expression instead
        of a predicate constraint.
        (finish_template_introduction): Same.
        (placeholder_extract_concept_and_args): Rewrite this since we only
        ever get check constraints here.
        (equivalent_placeholder_constraints): Rewrite in terms of check
        constraints, and handle error_mark_nodes correctly.
        (tsubst_check_constraint, tsubst_expr_constr, tsubst_type_constr)
        (tsubst_implicit_conversion_constr)
        (tsubst_argument_deduction_constr, tsubst_exception_constr)
        (tsubst_parameterized_constraint, tsubst_constraint): New.
        (tsbust_conjunection): Replace with tsubst_logical_operator and
        actually generate the right kind of constraint.
        (tsubst_requirement_body): Reverse the order of substituted arguments
        so that they appear in the order written (helps diagnostics).
        (satisfy_check_constraint): New.
        (satisfy_conjunction): Simplify.
        (satisfy_disjunction): Same.
        (satisfy_constraint_1): Handle check constraints.
        (eval_constr): New (private) global state.
        (evaluating_constraints_sentinel): New. Manages eval_constr.
        (satisfy_constraint): Add timing variables.
        (satisfy_associated_constraints): Add hooks for memoization.
        (evaluate_function_concept): Build a check constraint instead of
        normalizing its definition.
        (evaluate_variable_concept): Same.
        (evaluate_constraint_expression): Normalize, but in the current
        declaration processing context.
        (evaluating_constraints_p): New.
        (elide_constraint_failure_p): Actually emit constraint_thresh errors.
        (diagnose_*): Remove artificial indentation. Add a new parameter to
        each that tracks the current (complete) constraint prior to any
        substitutions.
        (diagnose_expression): Removed.
        (diagnose_call_expression): Same.
        (diagnose_template_id): Same.
        (diagnose_template_id): New.
        (diagnose_logical_constraint): New.
        (diagnose_expression_constraint): Show the original expression.
        (diagnose_type_constraint): Show the original type.
        (diagnose_implicit_conversion_constraint): Be specific about
        failures, don't re-diagnose a known-to-be-failed substitutions,
        and manage elisions properly.
        (diagnose_argument_deduction_constraint): Same.
        (diagnose_exception_constraint): Same.
        (diagnose_parameterized_constraint): Same.
        (constraint_p): Allow EXPR_PACK_EXPANSION.
        * logic.cc (next_by_distance): Removed. No longer used.
        (any_p): Renamed from any_of.
        (term_entry, term_hasher): New.
        (term_list): Rewrite to include a hash table for quick lookup.
        Also, make less stateful.
        (proof_state): Extend to allow goals to be discharged once
        satisfied.
        (non_atomic_constraint_p): New.
        (any_non_atomic_constraints_p): New.
        (...rest...): Previous implementation completely replaced with an
        iterative algorithm that opportunistically prunes the search space
        before committing to using more memory.
        * parser.c: (cp_parser_type_parameter): Normalize constraints.
        (cp_parser_explicit_template_declaration): Same.
        * pt.c: (finish_template_variable): Be less redundant with this error
        message.
        (template_args_equal): No longer static.
        (tsubst_decl): Don't try to find specializations of variables that
        have already been instantiated.
        (build_non_dependent_expr): Avoid infinite recursion during concept
        expansion.
        (make_constrained_auto): Normalize constraints.
        (do_auto_deduction): When doing auto deduction from a
        partial-concept-id, be sure to include the explicit args checking
        the constraints.
        (constraint_sat_*): New. Memoize satisfied constraints.
        (concept_spec_*): New. Memoize expressions associated with a concept
        specialization.
        (constraint_memos, concept_memos): New.
        (lookup_constraint_satisfaction, memoize_constraint_satisfaction): New.
        (lookup_concept_satisfaction, memoize_concept_satisfaction): New.
        (get_concept_expansion, save_concept_expansion): New.
        (hash_subsumption_args): New.
        (comp_subsumption_args): New.
        (subsumption_*): New. Memoize parts of the subsumption relation.
        (lookup_subsumption_result, save_subsumption_result): New.
        (init_constraint_processing): Initialize memo tables.
        (get_constraints): Shortcut if !flag_concepts.
        * decl.c (grokfndecl): Normalize constraints.
        * error.c (dump_simple_decl): Print "concept" when appropriate.
        (dump_function_decl): Same.
        (dump_template_decl): Don't write requirements when we're not
        printing the header.
        (dump_expr): Handle fold expressions.
        * cxx-pretty-print.c (cxx_pretty_printer::expression): Handle
        fold expressions.
        (get_fold_operator): New.
        (pp_cxx_unary_left_fold_expression): New.
        (pp_cxx_unary_right_fold_expression): New.
        (pp_cxx_binary_fold_expression): New.
        (pp_cxx_check_constraint): New.
        (pp_cxx_*_constraint): Rewrite the grammar of internal constraints
        to make them easier to read when debugging.
        * search.c (accessible_p): Don't shortcut when evaluating constraints.
        * tree.c (cp_tree_equal): Handle CHECK_CONSTR.

2016-07-20  David Malcolm  <dmalcolm@redhat.com>

        PR c/70339
        PR c/71858
        * name-lookup.c: Include gcc-rich-location.h, spellcheck-tree.h,
        and parser.h.
        (suggest_alternatives_for): If no candidates are found, try
        lookup_name_fuzzy and report if if finds a suggestion.
        (consider_binding_level): New function.
        (lookup_name_fuzzy) New function.
        * parser.c: Include gcc-rich-location.h.
        (cp_lexer_next_token_is_decl_specifier_keyword): Move most of
        logic into...
        (cp_keyword_starts_decl_specifier_p): ...this new function.
        (cp_parser_diagnose_invalid_type_name): When issuing
        "does not name a type" errors, attempt to make a suggestion using
        lookup_name_fuzzy.
        * parser.h (cp_keyword_starts_decl_specifier_p): New prototype.
        * search.c (lookup_field_fuzzy_info::fuzzy_lookup_field): Reject
        types that are not CLASS_TYPE_P, rather than rejecting individual
        tree codes.

2016-07-20  Jakub Jelinek  <jakub@redhat.com>

        PR c++/71909
        * parser.c (cp_parser_save_member_function_body): Consume
        __transaction_relaxed or __transaction_atomic with optional
        attribute.  Only skip catch with block if try keyword is seen.

        PR c++/50060
        * constexpr.c (cxx_eval_builtin_function_call): Pass false as lval
        when evaluating call arguments.  Use fold_builtin_call_array instead
        of fold_build_call_array_loc, return t if it returns NULL.  Otherwise
        check the result with potential_constant_expression and call
        cxx_eval_constant_expression on it.

2016-07-19  Jason Merrill  <jason@redhat.com>

        PR c++/67164
        * pt.c (iterative_hash_template_arg, template_args_equal): Don't
        handle ARGUMENT_PACK_SELECT.

2016-07-18  Jakub Jelinek  <jakub@redhat.com>

        PR c++/70869
        PR c++/71054
        * cp-gimplify.c (cp_genericize_r): Revert the 2016-07-07 change.
        * tree.c (cp_walk_subtrees): For DECL_EXPR on DECL_ARTIFICIAL
        non-static VAR_DECL, walk the decl's DECL_INITIAL, DECL_SIZE and
        DECL_SIZE_UNIT.

        PR c++/71835
        * call.c (build_op_call_1): Use convert_like_with_context only
        if cand->fn is a decl.

        PR c++/71828
        * constexpr.c (cxx_eval_constant_expression) <case REALPART_EXPR>:
        For lval don't use cxx_eval_unary_expression and instead recurse
        and if needed rebuild the reference.

        PR c++/71826
        * pt.c (tsubst_baselink): Only set BASELINK_OPTYPE for BASELINK_P.

        PR c++/71822
        * cp-gimplify.c (cp_gimplify_expr) <case VEC_INIT_EXPR>: Recursively
        fold *expr_p before genericizing it.

        PR c++/71871
        * typeck.c (build_x_conditional_expr): Revert the 2012-10-25 change.

2016-07-15  Jason Merrill  <jason@redhat.com>

        PR c++/71495
        * call.c (convert_like_real): Mask complain.
        * semantics.c (perform_koenig_lookup): Likewise.

        PR c++/71092
        * constexpr.c (cxx_eval_call_expression): Fail quietly when cgraph
        threw away DECL_SAVED_TREE.

        PR c++/71117
        Core 2189
        * call.c (add_template_conv_candidate): Disable if there are
        viable candidates.

        PR c++/71511
        * typeck2.c (cxx_incomplete_type_diagnostic): Handle DECLTYPE_TYPE.

        PR c++/71513
        * pt.c (tsubst_attributes): Fix loop logic.

        PR c++/71604
        PR c++/54430
        * parser.c (cp_parser_range_for): Modify IDENTIFIER_BINDING directly.
        (cp_parser_simple_declaration): Diagnose type definition in
        for-range-declaration.

        PR c++/71711
        * operators.def: Add *_FOLD_EXPR.
        * cp-tree.h (FOLD_EXPR_P): Parenthesize.
        * mangle.c (write_expression): Handle fold-expressions.
        * pt.c (tsubst_unary_left_fold, tsubst_binary_left_fold)
        (tsubst_unary_right_fold, tsubst_binary_right_fold): Handle
        partial instantiation.

        PR c++/71814
        * mangle.c (write_expression): Handle sizeof... an argument pack.

        PR c++/71718
        * pt.c (push_tinst_level_loc): Set at_eof before fatal_error.

        PR c++/70824
        * init.c (constant_value_1): Don't instantiated DECL_INITIAL of
        artificial variables.

2016-07-15  Cesar Philippidis  <cesar@codesourcery.com>

        * parser.c (cp_parser_oacc_declare): Don't scan for
        GOMP_MAP_POINTER.
        * semantics.c (handle_omp_array_sections): Mark data clauses with
        GOMP_MAP_FORCE_{PRESENT,TO,FROM,TOFROM} as potentially having
        zero-length subarrays.

2016-07-11  Jason Merrill  <jason@redhat.com>

        * decl.c (store_parm_decls): Remove check for void parm.

2016-07-08  Jason Merrill  <jason@redhat.com>

        * cp-tree.h: Unpoison lvalue_p.
        * call.c, class.c, constexpr.c, cvt.c, init.c, lambda.c, pt.c,
        tree.c, typeck.c, typeck2.c: Use lvalue_p instead of
        real_lvalue_p.

        * tree.c (obvalue_p): Rename from lvalue_p.
        (lvalue_p): Define for c-common.
        * call.c, cp-tree.h, cvt.c, init.c: Adjust.
        * typeck.c: Adjust.
        (cp_build_addr_expr_1): Remove obsolete code.

        * tree.c (glvalue_p): Rename from lvalue_or_rvalue_with_address_p.
        * call.c, cp-tree.h, typeck.c: Adjust.

        * lambda.c (maybe_add_lambda_conv_op): Fix null object argument.

        P0145R2: Refining Expression Order for C++.
        * cp-gimplify.c (lvalue_has_side_effects): New.
        (cp_gimplify_expr): Implement assignment ordering.
        * call.c (op_is_ordered, build_over_call): Adjust for
        -fargs-in-order renaming to -fstrong-eval-order.
        * cp-gimplify.c (cp_gimplify_expr): Likewise.

2016-07-07  Jakub Jelinek  <jakub@redhat.com>
            Kai Tietz  <ktietz70@googlemail.com>

        PR c++/70869
        PR c++/71054
        * cp-gimplify.c (cp_genericize_r): For DECL_EXPR for non-static
        artificial vars, genericize their initializers.

2016-07-05  David Malcolm  <dmalcolm@redhat.com>

        PR c++/62314
        * parser.c (cp_parser_class_specifier_1): When reporting
        missing semicolons, use a fixit-hint to suggest insertion
        of a semicolon immediately after the closing brace,
        offsetting the reported column accordingly.

2016-07-04  Jan Beulich  <jbeulich@suse.com>

        * lang-specs.h ("@c++-header"): Conditionalize "-o".

2016-06-29  Thomas Schwinge  <thomas@codesourcery.com>

        * parser.c (cp_parser_pragma) <PRAGMA_OMP_CANCELLATION_POINT>:
        Move pragma context checking into...
        (cp_parser_omp_cancellation_point): ... here, and improve
        diagnostic messages.
        * semantics.c (finish_omp_cancel, finish_omp_cancellation_point):
        Improve diagnostic messages.

2016-06-28  Jakub Jelinek  <jakub@redhat.com>

        * Make-lang.in: Don't cat ../stage_current if it does not exist.

2016-06-24  Jason Merrill  <jason@redhat.com>

        P0145R2: Refining Expression Order for C++.
        * typeck.c (cp_build_modify_expr): Leave COMPOUND_EXPR on LHS.

        * tree.c (get_target_expr_sfinae): Handle bit-fields.
        (build_target_expr): Call mark_rvalue_use.

2016-06-24  Jakub Jelinek  <jakub@redhat.com>

        * call.c (magic_varargs_p): Return 3 for __builtin_*_overflow_p.
        (build_over_call): For magic == 3, do no conversion only on 3rd
        argument.

2016-06-23  Andi Kleen  <ak@linux.intel.com>

        * Make-lang.in: Add support for autofdo.

2016-06-21  Jason Merrill  <jason@redhat.com>

        * constraint.cc (constraints_satisfied_p): Keep as many levels of
        args as our template has levels of parms.

        * pt.c (template_parm_outer_level, uses_outer_template_parms): New.
        (type_dependent_expression_p): Use uses_outer_template_parms.

2016-06-20  David Malcolm  <dmalcolm@redhat.com>

        * parser.c (cp_parser_string_literal): Convert non-standard
        concatenation error to directly use a rich_location, and
        use that to add the location of the first literal to the
        diagnostic.

2016-06-17  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (validate_constexpr_redeclaration): Change pair of errors
        to error + inform.
        * error.c (dump_function_decl): Save the constexpr specifier too.

2016-06-17  Jakub Jelinek  <jakub@redhat.com>

        * tree.c (builtin_valid_in_constant_expr_p): Test for
        DECL_BUILT_IN_CLASS equal to BUILT_IN_NORMAL instead of just
        DECL_BUILT_IN.
        (bot_manip): Likewise.
        * call.c (magic_varargs_p): Likewise.

2016-06-17  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grokfndecl): Change pair of errors to error + inform.

2016-06-17  Jason Merrill  <jason@redhat.com>

        PR c++/71209
        * typeck.c (finish_class_member_access_expr): Avoid "not a base"
        warning when there are dependent bases.

2016-06-17  Jakub Jelinek  <jakub@redhat.com>

        * semantics.c (handle_omp_array_sections_1): Don't ICE when
        processing_template_decl when checking for bitfields and unions.
        Look through REFERENCE_REF_P as base of COMPONENT_REF.
        (finish_omp_clauses): Look through REFERENCE_REF_P even for
        array sections with COMPONENT_REF bases.

2016-06-16  Jakub Jelinek  <jakub@redhat.com>

        * parser.c (cp_parser_omp_var_list_no_open): Call
        convert_from_reference before cp_parser_postfix_dot_deref_expression.
        * semantics.c (finish_omp_clauses): Don't ICE when
        processing_template_decl when checking for bitfields and unions.
        Look through REFERENCE_REF_P as base of COMPONENT_REF.

2016-06-15  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (wrapup_globals_for_namespace): Use DECL_SOURCE_LOCATION and
        "%qF" in warning_at instead of "%q+F" in warning.
        (check_redeclaration_exception_specification): Likewise in pedwarn
        (and error, inform, for consistency).
        * call.c (joust): Likewise.

2016-06-15  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/70202
        * decl.c (xref_basetypes): Revert r117839 changes; add fix-up
        code at the end of the for loop; also revert r159637 changes,
        add back the gcc_assert.
        * cp-tree.h (xref_basetypes): Adjust declaration.
        * parser.c (cp_parser_class_head): Adjust xref_basetypes call.

2016-06-14  David Malcolm  <dmalcolm@redhat.com>

        * search.c: Include spellcheck-tree.h rather than spellcheck.h.

2016-06-14  David Malcolm  <dmalcolm@redhat.com>

        * typeck.c: Include "gcc-rich-location.h".
        (finish_class_member_access_expr): Simplify fixit code by
        using gcc_rich_location::add_fixit_misspelled_id.

2016-06-14  Jason Merrill  <jason@redhat.com>

        P0145R2: Refining Expression Order for C++.
        * cp-tree.h (CALL_EXPR_OPERATOR_SYNTAX, CALL_EXPR_ORDERED_ARGS)
        (CALL_EXPR_REVERSE_ARGS): New.
        * call.c (build_new_op_1): Set them.
        (extract_call_expr, op_is_ordered): New.
        (build_over_call): Set CALL_EXPR_ORDERED_ARGS.
        * cp-gimplify.c (cp_gimplify_expr) [CALL_EXPR]: Handle new flags.
        * pt.c (tsubst_copy_and_build): Copy new flags.
        * semantics.c (simplify_aggr_init_expr): Likewise.
        * tree.c (build_aggr_init_expr): Likewise.
        (build_min_non_dep_op_overload): Likewise.

2016-06-14  Jakub Jelinek  <jakub@redhat.com>

        PR c++/71528
        * decl.c (duplicate_decls): For DECL_INITIALIZED_P non-external
        olddecl vars, preserve their TREE_READONLY bit.

        PR c++/71516
        * decl.c (complete_vars): Handle gracefully type == error_mark_node.

2016-06-14  Paolo Carlini  <paolo.carlini@oracle.com>

        * typeck2.c (digest_init_r): Use EXPR_LOC_OR_LOC on init.

2016-06-13  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (grokdeclarator): Fix typo in pedwarn text.

2016-06-10  Thomas Schwinge  <thomas@codesourcery.com>

        PR c/71381
        * parser.c (cp_parser_omp_var_list_no_open) <OMP_CLAUSE__CACHE_>:
        Loosen checking.

2016-06-09  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/71465
        Revert:
        2016-06-04  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/70202
        * parser.c (cp_parser_class_head): When xref_basetypes fails and
        emits an error do not zero the type.

2016-06-08  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (maybe_deduce_size_from_array_init): Use
        DECL_SOURCE_LOCATION in error_at.
        (layout_var_decl): Likewise.
        (check_array_initializer): Likewise.
        (check_initializer): Likewise.
        (duplicate_decls, check_elaborated_type_specifier): Tidy.

2016-06-08  Martin Sebor  <msebor@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR c++/70507
        PR c/68120
        * constexpr.c: Include gimple-fold.h.
        (cxx_eval_internal_function): New function.
        (cxx_eval_call_expression): Call it.
        (potential_constant_expression_1): Handle integer arithmetic
        overflow built-ins.
        * tree.c (builtin_valid_in_constant_expr_p): Handle
        BUILT_IN_{ADD,SUB,MUL}_OVERFLOW_P.

2016-06-08  Paolo Carlini  <paolo.carlini@oracle.com>

        * pt.c (tsubst, case TYPENAME_TYPE): Don't delay checking the
        return value of tsubst_aggr_type for error_mark_node.

2016-06-08  Jakub Jelinek  <jakub@redhat.com>

        PR c++/71442
        * pt.c (tsubst_copy): Only set TREE_USED on DECLs.

2016-06-06  Jakub Jelinek  <jakub@redhat.com>
            Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70847
        PR c++/71330
        PR c++/71393
        * cp-gimplify.c (cp_fold_r): Set *walk_subtrees = 0 and return NULL
        right after cp_fold call if cp_fold has returned the same stmt
        already in some earlier cp_fold_r call.
        (cp_fold_function): Add pset automatic variable, pass its address
        to cp_walk_tree.

2016-06-04  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/70202
        * parser.c (cp_parser_class_head): When xref_basetypes fails and
        emits an error do not zero the type.

2016-06-03  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/27100
        * decl.c (duplicate_decls): Properly copy the
        DECL_PENDING_INLINE_P, DECL_PENDING_INLINE_INFO and
        DECL_SAVED_FUNCTION_DATA fields from OLDDECL to NEWDECL.

2016-06-03  Chung-Lin Tang  <cltang@codesourcery.com>

        * semantics.c (finish_omp_clauses): Mark OpenACC reduction
        arguments as addressable when async clause exists.

2016-06-02  Jan Hubicka  <jh@suse.cz>

        * cp-gimplify.c (genericize_continue_stmt): Force addition of
        predict stmt.

2016-06-02  Paolo Carlini  <paolo.carlini@oracle.com>

        * decl.c (xref_tag_1): Change pairs of errors to error + inform.
        (start_enum): Likewise.
        * parser.c (cp_parser_class_head): Likewise.

2016-06-02  Jakub Jelinek  <jakub@redhat.com>

        PR c++/71372
        * cp-gimplify.c (cp_fold): For INDIRECT_REF, if the folded expression
        is INDIRECT_REF or MEM_REF, copy over TREE_READONLY, TREE_SIDE_EFFECTS
        and TREE_THIS_VOLATILE flags.  For ARRAY_REF and ARRAY_RANGE_REF, copy
        over TREE_READONLY, TREE_SIDE_EFFECTS and TREE_THIS_VOLATILE flags
        to the newly built tree.

2016-05-31  Jason Merrill  <jason@redhat.com>

        * pt.c (instantiate_decl): Avoid recalculation.

        PR c++/60095
        PR c++/69515
        PR c++/69009
        * pt.c (instantiate_template_1): Don't put the partial
        specialization in DECL_TI_TEMPLATE.
        (partial_specialization_p, impartial_args): Remove.
        (regenerate_decl_from_template): Add args parm.
        (instantiate_decl): Look up the partial specialization again.

        PR c++/71227
        * pt.c (check_explicit_specialization): Give better diagnostic about
        specializing a hidden friend.

2016-05-31  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/71248
        * decl.c (check_static_variable_definition): Use DECL_SOURCE_LOCATION
        to obtain correct locations; avoid redundant diagnostics on
        out-of-class definitions.

2016-05-30  Martin Sebor  <msebor@redhat.com>

        PR c++/71306
        * init.c (warn_placement_new_too_small): Handle placement new arguments
        that are elements of arrays more carefully.  Remove a pointless loop.

2016-05-30  Jakub Jelinek  <jakub@redhat.com>

        PR c++/71349
        * parser.c (cp_parser_omp_for): Don't disallow nowait clause
        when combined with target construct.
        (cp_parser_omp_parallel): Pass cclauses == NULL as last argument
        to cp_parser_omp_all_clauses.

2016-05-30  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/71238
        * lex.c (unqualified_name_lookup_error): Take a location too.
        (unqualified_fn_lookup_error): Take a cp_expr.
        * cp-tree.h (unqualified_name_lookup_error,
        unqualified_fn_lookup_error): Adjust declarations.
        * semantics.c (perform_koenig_lookup): Adjust
        unqualified_fn_lookup_error call, pass the location of
        the identifier too as part of a cp_expr.

2016-05-30  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/71099
        * parser.c (cp_parser_function_specifier_opt): Use current_class_type
        to improve the diagnostic about wrong uses of 'virtual'.

2016-05-29  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/71105
        * lambda.c (maybe_add_lambda_conv_op): Early return also when
        LAMBDA_EXPR_DEFAULT_CAPTURE_MODE != CPLD_NONE.

2016-05-28  Ville Voutilainen  <ville.voutilainen@gmail.com>

        Revert:
        PR c++/69855
        * name-lookup.c (pushdecl_maybe_friend_1): Push local function
        decls into the global scope after stripping template bits
        and setting DECL_ANTICIPATED.

2016-05-27  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/60385
        * name-lookup.c (push_namespace): Return bool, false when pushdecl
        fails.
        * name-lookup.h (push_namespace): Adjust declaration.
        * parser.c (cp_parser_namespace_definition): Check push_namespace
        return value.

2016-05-27  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR c++/69855
        * name-lookup.c (pushdecl_maybe_friend_1): Push local function
        decls into the global scope after stripping template bits
        and setting DECL_ANTICIPATED.

2016-05-26  Jakub Jelinek  <jakub@redhat.com>

        * semantics.c (finish_omp_clauses) <case OMP_CLAUSE_SCHEDULE>: Warn
        if OMP_CLAUSE_SCHEDULE_CHUNK_EXPR is known not to be positive.

2016-05-26  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70822
        PR c++/70106
        * cp-tree.h (REF_PARENTHESIZED_P): Make this flag apply to
        SCOPE_REFs too.
        * pt.c (tsubst_qualified_id): If REF_PARENTHESIZED_P is set
        on the qualified_id then propagate it to the resulting
        expression.
        (do_auto_deduction): Check REF_PARENTHESIZED_P on SCOPE_REFs
        too.
        * semantics.c (force_paren_expr): If given a SCOPE_REF, just set
        its REF_PARENTHESIZED_P flag.

2016-05-25  Jason Merrill  <jason@redhat.com>

        PR c++/71173
        PR c++/70522
        * cp-tree.h (enum tag_types): Add scope_type.
        * parser.c (cp_parser_class_name): Use scope_type.
        (prefer_type_arg): Handle scope_type.
        (cp_parser_lookup_name): Use prefer_type_arg.
        * name-lookup.c (lookup_qualified_name): Change bool is_type_p to
        int prefer_type, use lookup_flags.
        * name-lookup.h: Adjust.

2016-05-24  Cesar Philippidis  <cesar@codesourcery.com>

        * parser.c (cp_parser_oacc_declare): Add support for
        GOMP_MAP_FIRSTPRIVATE_POINTER.
        * semantics.c (handle_omp_array_sections_1): Replace bool is_omp
        argument with enum c_omp_region_type ort.  Don't privatize OpenACC
        non-static members.
        (handle_omp_array_sections): Replace bool is_omp argument with enum
        c_omp_region_type ort.  Update call to handle_omp_array_sections_1.
        (finish_omp_clauses): Add specific errors and warning messages for
        OpenACC.  Use firsrtprivate pointers for OpenACC subarrays.  Update
        call to handle_omp_array_sections.

2016-05-24  Jason Merrill  <jason@redhat.com>

        PR c++/70584
        * cp-gimplify.c (cp_fold_maybe_rvalue): Loop in case cp_fold
        returns a decl.
        (cp_fold) [INDIRECT_REF]: Don't fold to an rvalue.

2016-05-24  Martin Sebor  <msebor@redhat.com>

        PR c++/71147
        * decl.c (layout_var_decl, grokdeclarator): Use complete_or_array_type_p.
        * pt.c (instantiate_class_template_1): Try to complete the element
        type of a flexible array member.
        (can_complete_type_without_circularity): Handle arrays of unknown bound.
        * typeck.c (complete_type): Also complete the type of the elements of
        arrays with an unspecified bound.

2016-05-24  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/69872
        * typeck2.c (check_narrowing): Check pedwarn return value.

2016-05-24  Jakub Jelinek  <jakub@redhat.com>

        PR c++/71257
        * semantics.c (finish_omp_clauses) <case OMP_CLAUSE_LINEAR>:
        For OMP_CLAUSE_LINEAR_REF don't require type to be
        integral or pointer.

2016-05-24  Richard Biener  <rguenther@suse.de>

        PR middle-end/70434
        PR c/69504
        * expr.c (mark_exp_read): Handle VIEW_CONVERT_EXPR.
        * constexpr.c (cxx_eval_array_reference): Handle indexed
        vectors.
        * typeck.c (cp_build_array_ref): Adjust.

2016-05-23  Jason Merrill  <jason@redhat.com>

        PR c++/70344
        * constexpr.c (cxx_eval_call_expression): Check for
        fun == current_function_decl again.

        PR c++/70584
        * cp-gimplify.c (cp_fold) [INDIRECT_REF]: Call
        maybe_undo_parenthesized_ref.

        PR c++/70735
        * pt.c (tsubst_copy): Just return a local variable from
        non-template context.  Don't call rest_of_decl_compilation for
        duplicated static locals.
        (tsubst_decl): Set DECL_CONTEXT of local static from another
        function.

2016-05-23  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/70972
        * method.c (forward_parm): Use cp_build_reference_type.

2016-05-23  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/69095
        * parser.c (cp_parser_initializer): Use check_for_bare_parameter_packs.

2016-05-23  Paolo Carlini  <paolo.carlini@oracle.com>

        * pt.c (check_for_bare_parameter_packs): Improve error message
        location for expressions.

2016-05-20  Nathan Sidwell  <nathan@acm.org>

        * constexpr.c (cxx_bind_parameters_in_call): Avoid gratuitous if
        ... goto.
        (cxx_eval_call_expression): Fix comment grammar.

2016-05-20  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/70572
        * decl.c (cp_finish_decl): Check do_auto_deduction return value
        and return immediately in case of erroneous code.

2016-05-19  Marek Polacek  <polacek@redhat.com>

        PR c++/71075
        * pt.c (unify_template_argument_mismatch): Use %qE instead of %qD.

2016-05-19  Jason Merrill  <jason@redhat.com>

        PR c++/10200
        * pt.c (fn_type_unification): Add outer template args if needed.
        (type_unification_real): Handle getting full args.

2016-05-19  David Malcolm  <dmalcolm@redhat.com>

        PR c++/71184
        * parser.c (cp_parser_operator): For array new/delete, check that
        cp_parser_require returned a non-NULL token before dereferencing
        it.

2016-05-19  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * decl.c (finish_enum_value_list): Use the specified mode.

2016-05-18  Jason Merrill  <jason@redhat.com>

        * pt.c (value_dependent_expression_p): Tweak new cases to better
        match the wording in the standard.

2016-05-18  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/69793
        * parser.c (cp_parser_template_id): Don't call cp_lexer_peek_nth_token
        when the previous cp_lexer_peek_token returns CPP_EOF.

2016-05-18  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/70466
        * call.c (convert_like_real): Check that we are actually converting
        from an init list.

2016-05-16  Matthew Wahab  <matthew.wahab@arm.com>

        * decl.c (grokdeclarator): Remove errmsg and use of
        targetm.invalid_return_type.
        (grokparms): Remove errmsg and use of
        targetm.invalid_parameter_type.

2016-05-13  Jason Merrill  <jason@redhat.com>

        PR c++/10200
        PR c++/69753
        * pt.c (tsubst_decl): Use uses_template_parms.
        (instantiate_template_1): Handle non-dependent calls in templates.
        (value_dependent_expression_p): Handle BASELINK, FUNCTION_DECL.
        (type_dependent_expression_p): Only consider innermost template args.
        (dependent_template_arg_p): Check enclosing class of a template here.
        (dependent_template_p): Not here.
        (type_dependent_object_expression_p): New.
        * typeck.c (finish_class_member_access_expr): Use it.
        * parser.c (cp_parser_postfix_expression): Use it.
        (cp_parser_postfix_dot_deref_expression): Use it.  Use comptypes
        to detect the current instantiation.
        (cp_parser_lookup_name): Really implement DR 141.
        * search.c (lookup_field_r): Prefer a dependent using-declaration.
        (any_dependent_bases_p): Split out from...
        * name-lookup.c (do_class_using_decl): ...here.
        * call.c (build_new_method_call_1): Use it.
        * semantics.c (finish_call_expr): 'this' doesn't make a call dependent.
        * tree.c (non_static_member_function_p): Remove.
        * typeck2.c (build_x_arrow): Use dependent_scope_p.

        * parser.c (cp_parser_postfix_dot_deref_expression): Use
        complete_type_or_else for unknown_type_node, too.

2016-05-12  Marek Polacek  <polacek@redhat.com>

        PR c/70756
        * call.c (build_new_op_1): Pass LOC to cp_build_modify_expr.
        * cp-tree.h (cp_build_modify_expr): Update declaration.
        (cxx_incomplete_type_error, cxx_incomplete_type_diagnostic): New inline
        overloads.
        * cp-ubsan.c (cp_ubsan_dfs_initialize_vtbl_ptrs): Pass INPUT_LOCATION to
        cp_build_modify_expr.
        * decl2.c (set_guard): Likewise.
        (handle_tls_init): Likewise.
        * init.c (perform_member_init): Likewise.
        (expand_virtual_init): Likewise.
        (build_new_1): Likewise.
        (build_vec_delete_1): Likewise.
        (get_temp_regvar): Likewise.
        (build_vec_init): Likewise.
        * method.c (do_build_copy_assign): Likewise.
        (assignable_expr): Likewise.
        * semantics.c (finish_omp_for): Likewise.
        * typeck.c (cp_build_binary_op): Pass LOCATION to pointer_diff and
        cp_pointer_int_sum.
        (cp_pointer_int_sum): Add location parameter.  Pass it down to
        pointer_int_sum.
        (pointer_diff): Add location parameter.  Use it.
        (build_modify_expr): Pass location down to cp_build_modify_expr.
        (cp_build_modify_expr): Add location parameter.  Use it.
        (build_x_modify_expr): Pass location down to cp_build_modify_expr.
        * typeck2.c (cxx_incomplete_type_diagnostic,
        cxx_incomplete_type_error): Add location parameter.

2016-05-11  Marek Polacek  <polacek@redhat.com>

        PR c++/71024
        * decl.c (duplicate_decls): Call diagnose_mismatched_decls.

2016-05-05  Jakub Jelinek  <jakub@redhat.com>

        * parser.c (cp_parser_selection_statement): For RID_SWITCH,
        pass if_p instead of NULL to cp_parser_implicitly_scoped_statement.

2016-05-04  Marek Polacek  <polacek@redhat.com>

        * parser.c (cp_parser_selection_statement): Replace OPT_Wparentheses
        with OPT_Wdangling_else.

2016-05-03  Martin Sebor  <msebor@redhat.com>

        PR c++/66561
        * tree.c (builtin_valid_in_constant_expr_p): Treat BUILT_IN_FILE,
        BUILT_IN_FUNCTION, and BUILT_IN_LINE as constant expressions.

2016-05-03  Marek Polacek  <polacek@redhat.com>

        PR c/70859
        * call.c (build_cxx_call): Pass location and vNULL down to
        check_builtin_function_arguments.

2016-05-03  Richard Biener  <rguenther@suse.de>

        * Make-lang.in (cc1plus-checksum.c): For stage-final re-use
        the checksum from the previous stage.

2016-05-02  David Malcolm  <dmalcolm@redhat.com>

        PR c++/62314
        * typeck.c (finish_class_member_access_expr): When
        giving a hint about a possibly-misspelled member name,
        add a fix-it replacement hint.

2016-05-02  Cesar Philippidis  <cesar@codesourcery.com>

        * cp-tree.h (finish_omp_clauses): Update prototype.
        * parser.c (cp_parser_oacc_all_clauses): Update call to
        finish_omp_clauses.
        (cp_parser_omp_all_clauses): Likewise.
        (cp_parser_omp_for_loop): Likewise.
        (cp_omp_split_clauses): Likewise.
        (cp_parser_oacc_cache): Likewise.
        (cp_parser_oacc_loop): Likewise.
        (cp_parser_omp_declare_target):
        (cp_parser_cilk_simd_all_clauses): Likewise.
        (cp_parser_cilk_for): Likewise.
        * pt.c (tsubst_omp_clauses): Replace allow_fields and declare_simd
        arguments with enum c_omp_region_type ort.
        (tsubst_omp_clauses): Update calls to finish_omp_clauses.
        (tsubst_omp_attribute): Update calls to tsubst_omp_clauses.
        (tsubst_omp_for_iterator): Update calls to finish_omp_clauses.
        (tsubst_expr): Update calls to tsubst_omp_clauses.
        * semantics.c (finish_omp_clauses): Replace bool arguments
        allow_fields, declare_simd, and is_cilk with bitmask ort.
        (finish_omp_for): Update call to finish_omp_clauses.

2016-05-02  David Malcolm  <dmalcolm@redhat.com>

        PR c++/62314
        * parser.c (cp_parser_class_head): Capture the start location;
        use it to emit a fix-it insertion hint when complaining
        about missing "template <> " in explicit specializations.

2016-05-02  Richard Sandiford  <richard.sandiford@arm.com>

        * init.c (build_new_1): Use shift operators instead of wi:: shifts.

2016-05-02  Richard Biener  <rguenther@suse.de>

        * decl.c (grokdeclarator): Properly insert a DECL_EXPR for
        anonymous VLAs.

2016-04-29  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/66644
        * class.c (check_field_decl): Remove final int* parameter, change
        the return type to bool; fix logic in order not to reject multiple
        initialized fields in anonymous struct.
        (check_field_decls): Adjust call.

2016-04-29  Cesar Philippidis  <cesar@codesourcery.com>

        PR middle-end/70626
        * parser.c (cp_parser_oacc_loop): Don't augment mask with
        OACC_LOOP_CLAUSE_MASK.
        (cp_parser_oacc_kernels_parallel): Update call to
        c_oacc_split_loop_clauses.

2016-04-28  Jason Merrill  <jason@redhat.com>

        Implement C++17 [[nodiscard]] attribute.
        PR c++/38172
        PR c++/54379
        * parser.c (cp_parser_std_attribute): Handle [[nodiscard]].
        * tree.c (handle_nodiscard_attribute): New.
        (cxx_attribute_table): Add [[nodiscard]].
        * cvt.c (cp_get_fndecl_from_callee, cp_get_callee_fndecl): New.
        (maybe_warn_nodiscard): New.
        (convert_to_void): Call it.

        * cvt.c (cp_get_callee): New.
        * constexpr.c (get_function_named_in_call): Use it.
        * cxx-pretty-print.c (postfix_expression): Use it.
        * except.c (check_noexcept_r): Use it.
        * method.c (check_nontriv): Use it.
        * tree.c (build_aggr_init_expr): Use it.
        * cp-tree.h: Declare it.

2015-04-27  Ryan Burn  <contact@rnburn.com>
            Jeff Law  <law@redhat.com>

        PR c++/69024
        PR c++/68997
        * cp-gimplify.c (cp_gimplify_expr): Call cilk_cp_detect_spawn_and_unwrap
        instead of cilk_detect_spawn_and_unwrap.
        * cp-cilkplus.c (is_conversion_operator_function_decl_p): New.
        (find_spawn): New.
        (cilk_cp_detect_spawn_and_unwrap): New.
        * lambda.c: Include cp-cilkplus.h.
        * parser.c: Include cp-cilkplus.h.
        * cp-tree.h (cpp_validate_cilk_plus_loop): Move prototype into...
        * cp-cilkpus.h: New file.

2016-04-27  Nathan Sidwell  <nathan@acm.org>

        * constexpr.c (get_fundef_copy): Use the original function for
        non-recursive evaluations.
        (save_fundef_copy): Always expect a slot to be available.

2016-04-27  Bernd Schmidt  <bschmidt@redhat.com>

        * parser.c (cp_parser_postfix_expression): Call
        warn_for_memset instead of warning directly here.

2016-04-26  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70241
        * decl.c (build_enumerator): Set current_access_specifier when
        declaring an enumerator belonging to an in-class enumeration.
        * parser.c (cp_parser_check_access_in_redecleration): Also
        consider in-class enumerations.

2016-04-26  Marek Polacek  <polacek@redhat.com>

        PR c++/70744
        * call.c (build_conditional_expr_1): Call cp_stabilize_reference
        instead of stabilize_reference.
        (build_over_call): Likewise.
        * cp-tree.h (cp_stabilize_reference): Declare.
        * tree.c (cp_stabilize_reference): New function.
        * typeck.c (cp_build_unary_op): Call cp_stabilize_reference instead of
        stabilize_reference.
        (unary_complex_lvalue): Likewise.
        (cp_build_modify_expr): Likewise.

2016-04-26  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/70704
        * pt.c (build_non_dependent_expr): Use flag_checking > 1 instead of
        just flag_checking.

2016-04-25  Jason Merrill  <jason@redhat.com>

        * tree.c (std_attribute_table): New.
        (init_tree): Register it.

2016-04-22  Jason Merrill  <jason@redhat.com>

        * parser.c (cp_parser_perform_range_for_lookup): Decay the array.

2016-04-21  Patrick Palka  <ppalka@gcc.gnu.org>

        * name-lookup.c (free_saved_scope): New free list of saved_scope
        structures.
        (push_to_top_level): Attempt to reuse a saved_scope struct
        from free_saved_scope instead of allocating a new one each time.
        (pop_from_top_level_1): Chain the now-unused saved_scope structure
        onto free_saved_scope.

2016-04-21  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/70540
        * semantics.c (process_outer_var_ref): Unconditionally return
        error_mark_node when mark_used returns false.

2016-04-21  Marek Polacek  <polacek@redhat.com>

        PR c++/70513
        * parser.c (cp_parser_enum_specifier): Check and possibly error for
        extra qualification.

2016-04-20  Nathan Sidwell  <nathan@acm.org>

        PR c++/55635
        * init.c (build_vec_delete_1): Protect operator delete call in try
        finally.
        (build_delete): Likewise.
        * optimize.c (build_delete_destructor_body): Likewise.

2016-04-20  Ilya Verbin  <ilya.verbin@intel.com>

        PR c++/69363
        * cp-tree.h (finish_omp_clauses): Add new default argument.
        * parser.c (cp_parser_cilk_simd_all_clauses): Use finish_omp_clauses
        instead of c_finish_cilk_clauses.
        * semantics.c (finish_omp_clauses): Add new argument.  Allow
        floating-point variables in the linear clause for Cilk Plus.

2016-04-20  Nathan Sidwell  <nathan@acm.org>

        * semantics.c (finish_compound_lteral): Don't wrap VECTOR_TYPEs in a
        TARGET_EXPR.

2016-04-19  Jason Merrill  <jason@redhat.com>

        PR c++/66543
        * expr.c (mark_exp_read): Handle NON_DEPENDENT_EXPR.
        * pt.c (make_pack_expansion): Call mark_exp_read.
        * semantics.c (finish_id_expression): Call mark_type_use in
        unevaluated context.

        DR 2137
        * call.c (implicit_conversion): If we choose a copy constructor
        for list-initialization from the same type, the conversion is an
        exact match.

        * constexpr.c (breaks): Handle EXIT_EXPR.
        (cxx_eval_loop_expr): Handle COMPOUND_EXPR body.
        (cxx_eval_constant_expression): Handle EXIT_EXPR, improve handling
        of COMPOUND_EXPR.

        PR c++/68206
        PR c++/68530
        * constexpr.c (potential_constant_expression_1): Handle LOOP_EXPR
        and GOTO_EXPR.

        * pt.c (tsubst_expr): Remove shadowing declaration.
        (tsubst_pack_expansion): Add assert.

        * semantics.c (add_decl_expr): Use DECL_SOURCE_LOCATION.

        PR c++/70522
        * name-lookup.c (qualified_lookup_using_namespace): Look through
        hidden names.

2016-04-18  Michael Matz  <matz@suse.de>

        * class.c (build_vtable): Use SET_DECL_ALIGN and SET_TYPE_ALIGN.
        (layout_class_type): Ditto.
        (build_base_field): Use SET_DECL_ALIGN.
        (fixup_attribute_variants): Use SET_TYPE_ALIGN.
        * decl.c (duplicate_decls): Use SET_DECL_ALIGN.
        (record_unknown_type): Use SET_TYPE_ALIGN.
        (cxx_init_decl_processing): Ditto.
        (copy_type_enum): Ditto.
        (grokfndecl): Use SET_DECL_ALIGN.
        (copy_type_enum): Use SET_TYPE_ALIGN.
        * pt.c (instantiate_class_template_1): Use SET_TYPE_ALIGN.
        (tsubst): Ditto.
        * tree.c (cp_build_qualified_type_real): Use SET_TYPE_ALIGN.
        * lambda.c (maybe_add_lambda_conv_op): Use SET_DECL_ALIGN.
        * method.c (implicitly_declare_fn): Use SET_DECL_ALIGN.
        * rtti.c (emit_tinfo_decl): Ditto.

2016-04-18  Jason Merrill  <jason@redhat.com>

        PR c++/70690
        PR c++/70528
        * class.c (type_maybe_constexpr_default_constructor): New.
        (type_has_constexpr_default_constructor): Revert.

2016-04-16  Sandra Loosemore  <sandra@codesourcery.com>

        PR target/1078

        * tree.c (cxx_attribute_table): Remove "com_interface" entry.
        (handle_com_interface_attribute): Delete.

2016-04-15  Jason Merrill  <jason@redhat.com>

        PR c++/70685
        * constexpr.c (get_fundef_copy): Handle null *slot.

        PR c++/70505
        * pt.c (tsubst_baselink): Give the new TEMPLATE_ID_EXPR
        unknown_type_node, too.

2016-04-15  Jason Merrill  <jason@redhat.com>
            Nathan Sidwell  <nathan@acm.org>

        PR c++/70594
        * constexpr.c (constexpr_call_table): Preserve in GC.
        (struct fundef_copy, struct fundef_copies_table_t):     Delete.
        (fundef_copies_table): Preserve in GC. Change to pointer to
        tree->tree hash.
        (maybe_initialize_fundef_copies_table): Adjust.
        (get_fundef_copy): Return a TREE_LIST.  Use non-inserting search.
        (save_fundef_copy): Adjust for a TREE_LIST.
        (cxx_eval_call_expression): Adjust for a fundef_copy TREE_LIST.
        (fini_constexpr): New.
        * cp-tree.h (fini_constexpr): Declare.
        * decl2.c (c_parse_final_cleanups): Call fini_constexpr.

2016-04-15  Jakub Jelinek  <jakub@redhat.com>

        PR c/70436
        * parser.c (cp_parser_pragma): Add IF_P argument, pass it down
        where needed.
        (cp_parser_declaration_seq_opt, cp_parser_member_specification_opt,
        cp_parser_objc_interstitial_code, cp_parser_omp_declare_simd,
        cp_parser_oacc_routine): Adjust cp_parser_pragma callers.
        (cp_parser_statement): Likewise.  Adjust cp_parser_cilk_for caller.
        (cp_parser_omp_structured_block): Add IF_P argument, pass it down to
        cp_parser_statement.
        (cp_parser_oacc_data, cp_parser_oacc_host_data, cp_parser_oacc_loop,
        cp_parser_oacc_kernels_parallel, cp_parser_omp_critical,
        cp_parser_omp_simd, cp_parser_omp_for, cp_parser_omp_master,
        cp_parser_omp_ordered, cp_parser_omp_parallel, cp_parser_omp_single,
        cp_parser_omp_task, cp_parser_omp_taskgroup, cp_parser_omp_distribute,
        cp_parser_omp_teams, cp_parser_omp_target_data, cp_parser_omp_target,
        cp_parser_omp_taskloop, cp_parser_omp_construct,
        cp_parser_cilk_grainsize, cp_parser_cilk_simd, cp_parser_cilk_for):
        Add IF_P argument, pass it down where needed.
        (cp_parser_omp_for_loop): Likewise.  Clear IF_P if nbraces.
        (cp_parser_omp_sections_scope): Adjust cp_parser_omp_structured_block
        calls.

2016-04-14  Jason Merrill  <jason@redhat.com>

        PR c++/70494
        * decl.c (cxx_maybe_build_cleanup): Handle non-decls.
        * typeck2.c (split_nonconstant_init_1): Use it.

        PR c++/70528
        * class.c (type_has_constexpr_default_constructor): Return true
        for an implicitly declared constructor.

        PR c++/70622
        * parser.c (cp_parser_init_declarator): Add auto_result parm.
        (cp_parser_simple_declaration): Pass it.
        (strip_declarator_types): New.

        PR c++/70543
        * pt.c (value_dependent_expression_p) [VAR_DECL]: A type-dependent
        initializer also makes the variable value-dependent.

        PR c++/70648
        * constexpr.c (cxx_eval_store_expression): Also copy
        CONSTRUCTOR_NO_IMPLICIT_ZERO.

2016-04-14  Martin Sebor  <msebor@redhat.com>

        PR c++/69517
        PR c++/70019
        PR c++/70588
        * cp-tree.h, decl.c, init.c, typeck2.c: Revert.

2016-04-14  Jason Merrill  <jason@redhat.com>

        * call.c, decl.c, error.c, cp-tree.h, decl.c: Revert empty
        parameter ABI change.

2016-04-13  Martin Sebor  <msebor@redhat.com>

        PR c++/69517
        PR c++/70019
        PR c++/70588
        * cp-tree.h (throw_bad_array_length, build_vla_check): Declare new
        functions.
        * decl.c (check_initializer, cp_finish_decl): Call them.
        (reshape_init_r): Reject incompletely braced intializer-lists
        for VLAs.
        * init.c (throw_bad_array_length, build_vla_check)
        (build_vla_size_check, build_vla_init_check): Define new functions.
        * typeck2.c (split_nonconstant_init_1): Use variably_modified_type_p()
        to detect a VLA.
        (store_init_value): Same.

2016-04-13  Jason Merrill  <jason@redhat.com>

        Warn about empty parameter ABI with -Wabi=9.
        * call.c (empty_class_msg, mark_for_abi_warning)
        (warn_empty_class_abi): New.
        (build_call_a): Use them.
        * decl.c (store_parm_decls): Use mark_for_abi_warning.
        * error.c (pp_format_to_string): New.

        Pass empty class parameters like C.
        * call.c (pass_as_empty_struct, empty_class_arg): New.
        (type_passed_as, build_x_va_arg): Use pass_as_empty_struct.
        (build_call_a): Use empty_class_arg.
        * cp-tree.h (CPTI_EMPTY_STRUCT, empty_struct_type): New.
        * decl.c (cxx_init_decl_processing): Create empty_struct_type.

2016-04-13  Jason Merrill  <jason@redhat.com>

        PR c++/70627
        * decl.c (start_enum): Don't change an existing ENUM_UNDERLYING_TYPE.

2016-04-13  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/70635
        * pt.c (resolve_typename_type): Fix typos in infinite recursion
        avoidance mechanism.

2016-04-13  Jason Merrill  <jason@redhat.com>

        PR c++/70634
        * pt.c (instantiation_dependent_uneval_expression_p): Split out
        from instantiation_dependent_expression_p.
        (value_dependent_expression_p): Use it for unevaluated operands.
        (instantiation_dependent_r): Don't check value-dependence.
        (instantiation_dependent_expression_p): Check
        value-dependence of the expression as a whole.
        * cp-tree.h: Declare instantiation_dependent_uneval_expression_p.
        * semantics.c (finish_decltype_type): Use it.

        * constexpr.c (potential_nondependent_constant_expression): New.
        (potential_nondependent_static_init_expression): New.
        (maybe_constant_value_1, fold_non_dependent_expr)
        (maybe_constant_init): Use them.
        * pt.c (instantiate_non_dependent_expr_sfinae)
        (instantiate_non_dependent_or_null, convert_nontype_argument): Use
        them.
        * cp-tree.h: Declare them.

2016-04-13  Jakub Jelinek  <jakub@redhat.com>

        PR c++/70594
        * decl.c (pop_labels_1): Removed.
        (note_label, sort_labels): New functions.
        (pop_labels): During named_labels traversal, just push the slot
        pointers into a vector, then qsort it by DECL_UID and only then
        call pop_label and chain it into BLOCK_VARS.

2016-04-13  Jason Merrill  <jason@redhat.com>

        PR c++/70615
        * cp-gimplify.c (cp_genericize_r): Expand PTRMEM_CST here.
        (cp_gimplify_expr): Not here.

2016-04-12  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70610
        * tree.c (lvalue_kind) [NON_DEPENDENT_EXPR]: Unconditionally
        recurse into it.
        * typeck.c (build_x_conditional_expr): Unconditionally remember
        that the result is an lvalue or xvalue.

2016-04-12  Jason Merrill  <jason@redhat.com>

        * class.c (is_really_empty_class): A zero-length array is empty.
        An unnamed bit-field doesn't make a class non-empty.

2016-04-12  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/68722
        * parser.c (cp_parser_cache_defarg): When file ends in default
        argument simply return error_mark_node.

2016-04-12  Nathan Sidwell  <nathan@acm.org>

        PR c++/70501
        * constexpr.c (cxx_eval_bare_aggregate): Handle VECTOR_TYPE
        similarly to PMF.

2016-04-11  Jason Merrill  <jason@redhat.com>

        * mangle.c (decl_is_template_id): The template itself counts as a
        template-id.

2016-04-08  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70590
        PR c++/70452
        * constexpr.c (cxx_eval_outermost_expression): Call unshare_expr
        on the result if it's not a CONSTRUCTOR.

2016-04-07  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70452
        * constexpr.c (find_constructor): New function.
        (unshare_constructor): New function.
        (cxx_eval_call_expression): Use unshare_constructor instead of
        unshare_expr.
        (find_array_ctor_elt): Likewise.
        (cxx_eval_vec_init_1): Likewise.
        (cxx_eval_store_expression): Likewise.
        (cxx_eval_constant_expression): Likewise.

2016-04-06  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c/70436
        * cp-tree.h (FOR_EACH_CLONE): Restructure macro to avoid
        potentially generating a future -Wparentheses warning in its
        callers.

2016-04-06  Jason Merrill  <jason@redhat.com>

        * class.c (check_abi_tags): Fix function template handling.

2016-04-05  Nathan Sidwell  <nathan@acm.org>

        PR c++/70512
        * class.c (fixup_may_alias): New.
        (fixup_attribute_variants): Call it.

2016-04-05  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70452
        * constexpr.c (struct fundef_copy): New struct.
        (struct fundef_copies_table_t): New struct.
        (fundef_copies_table): New static variable.
        (maybe_initialize_fundef_copies_table): New static function.
        (get_fundef_copy): New static function.
        (save_fundef_copy): New static function.
        (cxx_eval_call_expression): Use get_fundef_copy, and
        save_fundef_copy.
        (constexpr_call_table): Add "deletable" GTY marker.

2016-04-05  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70452
        * cp-tree.h (class cache_map): Remove.
        * constexpr.c (cv_cache): Change type to
        GTY((deletable)) hash_map<tree, tree> *.
        (maybe_constant_value): Adjust following the change to cv_cache.
        (clear_cv_cache): New static function.
        (clear_cv_and_fold_caches): Use it.
        * cp-gimplify.c (fold_cache): Change type to
        GTY((deletable)) hash_map<tree, tree> *.
        (clear_fold_cache): Adjust following the change to fold_cache.
        (cp_fold): Likewise.

2016-04-02  Martin Sebor  <msebor@redhat.com>

        PR c++/67376
        PR c++/70170
        PR c++/70172
        PR c++/70228
        * constexpr.c (diag_array_subscript): New function.
        (cxx_eval_array_reference): Detect out of bounds array indices.

2016-04-01  Jason Merrill  <jason@redhat.com>

        PR c++/70449
        PR c++/70344
        * pt.c (instantiate_decl): A function isn't fully defined if
        DECL_INITIAL is error_mark_node.
        * constexpr.c (cxx_eval_call_expression): Likewise.

2016-04-01  Jakub Jelinek  <jakub@redhat.com>
            Marek Polacek  <polacek@redhat.com>

        PR c++/70488
        * init.c (warn_placement_new_too_small): Test whether
        DECL_SIZE_UNIT or TYPE_SIZE_UNIT are integers that fit into uhwi.

2016-04-01  Nathan Sidwell  <nathan@acm.org>

        PR c++/68475
        * decl.c (check_redeclaration_exception_specification): Check
        regardless of -fno-exceptions.
        * typeck2.c (merge_exception_specifiers): Relax assert by checking
        flag_exceptions too.

2016-03-31  Nathan Sidwell  <nathan@acm.org>

        * decl.c (start_preparsed_function): Remove unnecessary bracing.
        (finish_destructor_body): Don't emit operator delete here.

2016-03-31  Nathan Sidwell  <nathan@acm.org>

        PR c++/70393
        * constexpr.c (cxx_eval_store_expression): Keep CONSTRUCTOR
        elements in field order.

2016-03-31  Marek Polacek  <polacek@redhat.com>

        PR c/70297
        * decl.c (duplicate_decls): Also set TYPE_ALIGN and TYPE_USER_ALIGN.

2016-03-31  Richard Biener  <rguenther@suse.de>

        PR c++/70430
        * typeck.c (cp_build_binary_op): Fix operand order of vector
        conditional in truth op handling.

2016-03-29  Jason Merrill  <jason@redhat.com>

        PR c++/70353
        * decl.c (make_rtl_for_nonlocal_decl): Don't defer local statics
        in constexpr functions.

2016-03-28  Jason Merrill  <jason@redhat.com>

        PR c++/70422
        PR c++/64266
        PR c++/70353
        * decl.c, pt.c, constexpr.c: Revert last patch.

2016-03-25  Jason Merrill  <jason@redhat.com>
            Martin Liška  <mliska@suse.cz>

        PR c++/64266
        PR c++/70353
        Core issue 1962
        * decl.c (cp_fname_init): Decay the initializer to pointer.
        (cp_make_fname_decl): Set DECL_DECLARED_CONSTEXPR_P,
        DECL_VALUE_EXPR, DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P.
        Don't call cp_finish_decl.
        * pt.c (tsubst_expr) [DECL_EXPR]: Set DECL_VALUE_EXPR,
        DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P.  Don't call cp_finish_decl.
        * constexpr.c (cxx_eval_constant_expression) [VAR_DECL]:
        Handle DECL_VALUE_EXPR.

2016-03-24  Jason Merrill  <jason@redhat.com>

        PR c++/70386
        * constexpr.c (cxx_eval_bare_aggregate): Handle PMFs.

        PR c++/70323
        * constexpr.c (cxx_eval_call_expression): Don't cache result if
        *overflow_p.

2016-03-24  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/62212
        * tree.c (build_cplus_array_type): Determine type-dependentess
        with uses_template_parms instead of with dependent_type_p.

2016-03-23  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70347
        * typeck.c (process_init_constructor_union): If the initializer
        is empty, use the union's NSDMI if it has one.

2016-03-23  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70332
        * pt.c (tsubst_copy) [PARM_DECL]: Handle the use of 'this' in an
        NSDMI that's part of an aggregrate initialization.

2016-03-23  Jakub Jelinek  <jakub@redhat.com>

        PR c++/70001
        * constexpr.c (cxx_eval_vec_init_1): Reuse CONSTRUCTOR initializers
        for 1..max even for multi-dimensional arrays.  Call unshare_expr
        on it.

        PR c++/70323
        * constexpr.c (cxx_eval_constant_expression): Diagnose overflow
        on TREE_OVERFLOW constants.

        PR c++/70376
        * cp-gimplify.c (genericize_omp_for_stmt): Don't walk OMP_FOR_CLAUSES
        for OMP_TASKLOOP here.
        (cp_genericize_r): Handle OMP_TASKLOOP like OMP_TASK, except do call
        genericize_omp_for_stmt instead of cp_walk_tree on OMP_BODY.

2016-03-23  Alexandre Oliva  <aoliva@redhat.com>
            Jason Merrill  <jason@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR c++/69315
        * cp-tree.h (defer_mark_used_calls, deferred_mark_used_calls): Remove.
        * decl.c (defer_mark_used_calls, deferred_mark_used_calls): Remove.
        (finish_function): Don't set or test them.
        * decl2.c (mark_used): Don't handle defer_mark_used_calls.

2016-03-23  Jason Merrill  <jason@redhat.com>

        PR c++/70344
        * constexpr.c (cxx_eval_call_expression): Catch invalid recursion.

2016-03-23  Marek Polacek  <polacek@redhat.com>

        PR c++/69884
        * pt.c (canonicalize_type_argument): Use OPT_Wignored_attributes.

2016-03-22  Ilya Enkovich  <enkovich.gnu@gmail.com>

        * call.c (build_conditional_expr_1): Always use original
        condition type for vector type checks and build.

2016-03-22  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70096
        * pt.c (tsubst_decl): Clear the DECL_MODE of the new decl.

2016-03-22  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70204
        * constexpr.c (non_const_var_error): Check
        DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P.

2016-03-21  Richard Henderson  <rth@redhat.com>

        PR c++/70273
        * decl.c (notice_forced_label_r): New.
        (cp_finish_decl): Use it.

2016-03-21  Jason Merrill  <jason@redhat.com>

        PR c++/70285
        * cp-gimplify.c (cp_fold) [COND_EXPR]: Handle bit-fields.

2016-03-18  Jason Merrill  <jason@redhat.com>

        PR c++/70139
        * constexpr.c (cxx_eval_call_expression): Fix trivial copy.

        PR c++/70147
        * class.c (vptr_via_virtual_p): New.
        (most_primary_binfo): Factor out of build_rtti_vtbl_entries.
        * cp-ubsan.c (cp_ubsan_dfs_initialize_vtbl_ptrs): Don't clear
        a vptr from any virtual base in a not-in-charge 'structor.

        * decl.c (build_clobber_this): Factor out of
        start_preparsed_function and begin_destructor_body.  Handle
        virtual bases better.

        * class.c (build_if_in_charge): Split out from build_base_path.
        * init.c (expand_virtual_init, expand_default_init): Use it.
        * call.c (build_special_member_call): Use it.

2016-03-18  Jakub Jelinek  <jakub@redhat.com>

        PR c++/70267
        * init.c (build_new_1): Complain and return error_mark_node
        if alloc_fn is not _Jv_AllocObject function returning pointer.

2016-03-18  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70205
        * search.c (adjust_result_of_qualified_name_lookup): Don't
        update the BASELINK_BINFO of DECL if the second call
        to lookup_base fails.

2016-03-18  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70218
        * parser.c (cp_parser_lambda_expression): Move call to
        pop_deferring_access_checks ahead of the call to
        cp_parser_end_tentative_firewall.

2016-03-17  Jakub Jelinek  <jakub@redhat.com>

        PR c++/70144
        * cp-tree.h (magic_varargs_p): Return int instead of bool.
        * call.c (magic_varargs_p): Return int instead of bool, return 2 for
        Cilk+ reductions, otherwise 1 for magic varargs and 0 for normal
        varargs.
        (build_over_call): If magic_varargs_p == 2, call reject_gcc_builtin,
        if magic_varargs_p == 1, call decay_conversion
        instead of mark_type_use.  Don't store error_mark_node arguments to
        argarray, instead return error_mark_node.

        PR c++/70272
        * decl.c (begin_destructor_body): Don't insert clobber if
        is_empty_class (current_class_type).

2016-03-17  Marek Polacek  <polacek@redhat.com>

        PR c++/70194
        * typeck.c (warn_for_null_address): New function.
        (cp_build_binary_op): Call it.

2016-03-16  Jason Merrill  <jason@redhat.com>

        PR c++/70259
        * decl.c (start_preparsed_function): Don't clobber an empty base.

2016-03-16  Jakub Jelinek  <jakub@redhat.com>

        PR c++/70147
        * cp-ubsan.c (cp_ubsan_dfs_initialize_vtbl_ptrs): Conditionalize
        BINFO_VIRTUAL_P vtable clearing on current_in_charge_parm.

        PR c++/70147
        * cp-ubsan.c (cp_ubsan_maybe_initialize_vtbl_ptrs): Temporarily
        set in_base_initializer.

2016-03-15  Marek Polacek  <polacek@redhat.com>

        PR c++/70209
        * tree.c (strip_typedefs): Call strip_typedefs again on the
        DECL_ORIGINAL_TYPE result.

2016-03-15  Jason Merrill  <jason@redhat.com>

        PR c++/70095
        * pt.c (instantiate_decl): Fix call to variable_template_p.

        PR c++/70141
        * pt.c (for_each_template_parm_r): Always walk into TYPENAME_TYPE.

2016-03-14  Casey Carter  <casey@carter.net>
            Jason Merrill  <jason@redhat.com>

        P0184R0: Generalizing the Range-Based For Loop
        * parser.c (cp_convert_range_for): Set the type of __end separately.
        (cp_parser_perform_range_for_lookup): Allow different begin/end
        types if they are comparable.

2016-03-12  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/70106
        * semantics.c (force_paren_expr): Just build a PAREN_EXPR when
        processing_template_decl and EXPR is a SCOPE_REF.

2016-03-10  Patrick Palka  <ppalka@gcc.gnu.org>
            Jakub Jelinek  <jakub@redhat.com>

        PR c++/70001
        * constexpr.c (cxx_eval_vec_init_1): For pre_init case, reuse
        return value from cxx_eval_constant_expression from earlier
        elements if it is valid constant initializer requiring no
        relocations.

2016-03-10  Marek Polacek  <polacek@redhat.com>

        PR c++/70153
        * cp-gimplify.c (cp_fold): Handle UNARY_PLUS_EXPR.

2016-03-09  Cesar Philippidis  <cesar@codesourcery.com>

        * parser.c (cp_parser_oacc_loop): Update cclauses and clauses
        when calling c_finish_omp_clauses.

2016-03-08  Jason Merrill  <jason@redhat.com>

        * parser.c (cp_parser_diagnose_invalid_type_name): Give helpful
        diagnostic for use of "concept".
        (cp_parser_requires_clause_opt): And "requires".
        (cp_parser_type_parameter, cp_parser_late_return_type_opt)
        (cp_parser_explicit_template_declaration): Adjust.
        * Make-lang.in (check-c++-all): Add "concepts" to std list.

        P0036R0: Unary Folds and Empty Parameter Packs
        * pt.c (expand_empty_fold): Remove special cases for *,+,&,|.

2016-03-08  Jakub Jelinek  <jakub@redhat.com>

        PR c++/70135
        * constexpr.c (cxx_eval_loop_expr): Forget saved values of SAVE_EXPRs
        even after the last iteration of the loop.

        * decl.c (duplicate_decls): Fix spelling - becuase -> because.

2016-03-07  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/66786
        * pt.c (get_template_info): Handle PARM_DECL.
        (template_class_depth): Check DECL_P instead of
        VAR_OR_FUNCTION_DECL_P.

2016-03-05  Jason Merrill  <jason@redhat.com>

        PR c++/67364
        * constexpr.c (cxx_eval_store_expression): Replace
        CONSTRUCTOR_ELTS in nested CONSTRUCTORs, too.

2016-03-05  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/66786
        * pt.c (template_class_depth): Given a lambda type, iterate
        into its LAMBDA_TYPE_EXTRA_SCOPE field instead of its
        TYPE_CONTEXT.  Given a VAR_DECL, iterate into its
        CP_DECL_CONTEXT.

2016-03-04  Jason Merrill  <jason@redhat.com>

        PR c++/69203
        * cp-tree.h (COND_EXPR_IS_VEC_DELETE): New.
        * init.c (build_vec_delete_1): Set it.
        * constexpr.c (potential_constant_expression_1) [COND_EXPR]: Check it.

2016-03-04  Jakub Jelinek  <jakub@redhat.com>

        * decl.c (start_preparsed_function): Don't emit start clobber at the
        start of constructor clones.

        PR c++/70035
        * cp-tree.h (cp_ubsan_maybe_initialize_vtbl_ptrs): New prototype.
        * decl.c (start_preparsed_function): Call
        cp_ubsan_maybe_initialize_vtbl_ptrs if needed.
        * cp-ubsan.c (cp_ubsan_dfs_initialize_vtbl_ptrs,
        cp_ubsan_maybe_initialize_vtbl_ptrs): New functions.

2016-03-04  Jason Merrill  <jason@redhat.com>

        PR c++/67364
        * constexpr.c (cxx_eval_component_reference): Further tweak.

        * constexpr.c (struct constexpr_ctx): Add save_exprs field.
        (cxx_eval_loop_expr): Discard SAVE_EXPR values before looping.
        (cxx_eval_constant_expression) [SAVE_EXPR]: Add it to the set.
        (cxx_eval_outermost_constant_expr, is_sub_constant_expr): Initialize.

        PR c++/70067
        * tree.c (strip_typedefs): Handle TYPENAME_TYPE lookup finding the
        same type.

2016-03-03  Jason Merrill  <jason@redhat.com>

        * method.c (synthesized_method_walk): operator= can also be constexpr.

        * pt.c (tsubst_copy_and_build) [LAMBDA_EXPR]: Get
        LAMBDA_EXPR_RETURN_TYPE from the instantiated closure.

        PR c++/67164
        * pt.c (copy_template_args): New.
        (tsubst_pack_expansion): Use it.

        * call.c (build_aggr_conv): Use get_nsdmi.

        PR c++/51406
        * typeck.c (build_static_cast_1): Avoid folding back to lvalue.

        PR c++/67364
        * constexpr.c (cxx_eval_component_reference): Just return an empty
        CONSTRUCTOR for an empty class.

2016-03-01  Jason Merrill  <jason@redhat.com>

        PR c++/70036
        * parser.c (cp_parser_requires_clause): Call
        check_for_bare_parameter_packs.

        PR c++/51489
        * constexpr.c (cxx_eval_binary_expression): Don't VERIFY_CONSTANT
        the operands.

        PR c++/69995
        * constexpr.c (cxx_eval_call_expression): Unshare arg.
        (cxx_eval_constant_expression) [DECL_EXPR]: Unshare init.
        [TARGET_EXPR]: Unshare init.

2016-03-01  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/68948
        PR c++/69961
        * pt.c (tsubst_baselink): Reinstate the check for an invalid
        constructor call.

2016-02-28  Jason Merrill  <jason@redhat.com>

        PR c++/69995
        * constexpr.c (cxx_eval_store_expression): Unshare init.

2016-02-26  Jason Merrill  <jason@redhat.com>

        PR c++/69958
        * pt.c (make_argument_pack): New.
        (tsubst_copy) [SIZEOF_EXPR]: Handle partial expansion.
        (tsubst_copy_and_build): Likewise.

2016-02-25  Jason Merrill  <jason@redhat.com>

        PR c++/69889
        * cp-tree.h (AGGR_INIT_FROM_THUNK_P): New.
        * tree.c (build_aggr_init_expr): Set it.
        * semantics.c (simplify_aggr_init_expr): Check it.
        * cp-gimplify.c (cp_genericize_r): Don't walk into
        a call/aggr_init from a thunk.

        PR c++/69842
        * method.c (forward_parm): Handle parameter packs.
        * lambda.c (maybe_add_lambda_conv_op): Use it for them.

        PR c++/67364
        * constexpr.c (cxx_eval_component_reference): Don't complain about
        unevaluated empty classes.

        PR c++/68049
        * tree.c (strip_typedefs): Use DECL_ORIGINAL_TYPE.

2016-02-25  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/69736
        * cp-tree.h (REF_PARENTHESIZED_P): Adjust documentation.
        (maybe_undo_parenthesized_ref): Declare.
        * semantics.c (maybe_undo_parenthesized_ref): Split out from
        check_return_expr.
        (finish_call_expr): Use it.
        * typeck.c (check_return_expr): Use it.
        * pt.c (tsubst_copy_and_build) [INDIRECT_REF]: Retain the
        REF_PARENTHESIZED_P flag.

2016-02-24  Jakub Jelinek  <jakub@redhat.com>

        PR c++/69922
        * class.c (build_base_path): Set TREE_NO_WARNING on the null_test.
        Avoid folding it.
        * init.c (build_vec_delete_1, build_delete): Don't fold the non-NULL
        tests.
        * cp-gimplify.c (cp_fold): For TREE_NO_WARNING comparisons with NULL,
        unless they are folded into INTEGER_CST, error_mark_node or some
        comparison with NULL, avoid folding them and use either the original
        comparison or non-folded comparison of folded arguments.
        * cp-ubsan.c (cp_ubsan_instrument_vptr): Set TREE_NO_WARNING on the
        comparison, don't fold the comparison right away.

2016-02-24  Jason Merrill  <jason@redhat.com>

        PR c++/69323
        * friend.c (make_friend_class): Likewise.
        * decl.c (lookup_and_check_tag): Diagnose invalid dependent friend.

2016-02-24  Jason Merrill  <jason@redhat.com>

        PR c++/69323
        * pt.c (instantiate_class_template_1): Set
        processing_template_decl before substituting friend_type.

016-02-24  Martin Sebor  <msebor@redhat.com>

        PR c++/69912
        * tree.c (build_ctor_subob_ref): Compare types' main variants
        instead of the types as they are.

2016-02-24  Jason Merrill  <jason@redhat.com>

        * decl.c (start_preparsed_function): Condition ctor clobber on
        flag_lifetime_dse > 1.

        * cp-gimplify.c (cp_fold): Don't fold constexpr calls if -fno-inline.

2016-02-19  Jason Merrill  <jason@redhat.com>

        PR c++/69743
        * call.c (remaining_arguments): No longer static.
        * cp-tree.h: Declare it.
        * pt.c (more_specialized_fn): Use it.

2016-02-19  Jakub Jelinek  <jakub@redhat.com>
            Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * Make-lang.in: Invoke gperf with -L C++.
        * cfns.gperf: Remove prototypes for hash and libc_name_p
        inlines.
        * cfns.h: Regenerated.
        * except.c (nothrow_libfn_p): Adjust.

2016-02-19  Jakub Jelinek  <jakub@redhat.com>

        PR c++/69850
        * rtti.c (ifnonnull): Set TREE_NO_WARNING on the condition, use
        NE_EXPR instead of EQ_EXPR and swap last two arguments on COND_EXPR.

2016-02-19  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/68948
        * pt.c (tsubst_baselink): Don't diagnose an invalid constructor
        call here.
        * semantics.c (finish_call_expr): Don't assume a constructor
        call is dependent if only the "this" pointer is dependent.  When
        building a constructor call, always use a dummy object.

2016-02-19  Jakub Jelinek  <jakub@redhat.com>

        PR c++/69850
        * init.c (build_vec_delete_1): Set TREE_NO_WARNING on the NE_EXPR
        condition.
        * cp-gimplify.c (cp_fold): Propagate TREE_NO_WARNING from binary
        operators if folding preserved the binop, just with different
        arguments.

        PR c++/67767
        * parser.c (cp_parser_std_attribute_spec_seq): Don't assume
        attr_spec is always single element chain, chain all the attributes
        properly together in the right order.

2016-02-18  Jason Merrill  <jason@redhat.com>

        * mangle.c (maybe_check_abi_tags): Add for_decl parm.  Call
        mangle_decl.
        (mangle_decl): Call maybe_check_abi_tags for function scope.
        (mangle_guard_variable): Call maybe_check_abi_tags here.
        (write_guarded_var_name): Not here.

2016-02-17  Jason Merrill  <jason@redhat.com>

        PR c++/65985
        * constexpr.c (build_constexpr_constructor_member_initializers):
        Handle an additional STATEMENT_LIST.

        PR c++/68585
        * constexpr.c (cxx_eval_bare_aggregate): Fix 'changed' detection.

        PR c++/68679
        * decl2.c (reset_type_linkage_2): Look through member templates.

2016-02-17  Jakub Jelinek  <jakub@redhat.com>

        PR c++/69850
        * init.c (build_delete): Set TREE_NO_WARNING on ifexp.

2016-02-17  Jason Merrill  <jason@redhat.com>

        PR c++/69842
        * method.c (forward_parm): Split out from...
        (add_one_base_init): ...here.
        * lambda.c (maybe_add_lambda_conv_op): Use it.

2016-02-16  Jason Merrill  <jason@redhat.com>

        PR c++/10200
        PR c++/69753
        * call.c, cp-tree.h, name-lookup.c, pt.c, search.c, semantics.c,
        tree.c, typeck2.c: Revert earlier changes.
        * parser.c (cp_parser_lookup_name): Ignore namespace-scope
        non-type templates after -> or .

2016-02-16  Jakub Jelinek  <jakub@redhat.com>

        PR c/69835
        * typeck.c (cp_build_binary_op): Revert 2015-09-09 change.

2016-02-16  Jason Merrill  <jason@redhat.com>

        PR c++/69657
        * name-lookup.c (lookup_qualified_name): Add find_hidden parm.
        (set_decl_namespace): Pass it.  Complain about finding a hidden friend.
        * name-lookup.h: Adjust.

2016-02-16  James Norris  <jnorris@codesourcery.com>

        * parser.c (cp_parser_oacc_data_clause_deviceptr): Remove checking.
        * semantics.c (finish_omp_clauses): Add deviceptr checking.

2016-02-15  Jakub Jelinek  <jakub@redhat.com>

        PR c++/69658
        * init.c (expand_default_init): Only call reshape_init
        in the direct-initialization from an initializer list case.

2016-02-15  Jason Merrill  <jason@redhat.com>

        PR c++/69753
        * semantics.c (finish_call_expr): Implicit 'this' does not make
        the call dependent.
        * search.c (any_dependent_bases_p): Split out...
        * name-lookup.c (do_class_using_decl): ...from here.
        * call.c (build_new_method_call_1): Don't complain about missing object
        if there are dependent bases.  Tweak error.
        * tree.c (non_static_member_function_p): Remove.
        * pt.c (type_dependent_expression_p): A member template of a
        dependent type is dependent.
        * cp-tree.h: Adjust.

        PR c++/68890
        * constexpr.c (verify_ctor_sanity): Remove CONSTRUCTOR_NELTS check.

2016-02-12  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/69098
        * pt.c (lookup_and_finish_template_variable): New function,
        extracted from ...
        (tsubst_copy_and_build) [TEMPLATE_ID_EXPR]: ... here.  Use it.
        (tsubst_qualified_id): Consider that EXPR might be a variable
        template.
        * typeck.c (check_template_keyword): Don't emit an error
        if DECL is a variable template.

2016-02-12  Jakub Jelinek  <jakub@redhat.com>

        * error.c: Spelling fixes - behaviour -> behavior and
        neighbour -> neighbor.
        * decl.c: Likewise.
        * typeck.c (cp_build_binary_op): Fix up behavior spelling in
        diagnostics.
        * init.c (build_delete): Likewise.

2016-02-11  Jakub Jelinek  <jakub@redhat.com>

        PR c/69768
        * typeck.c (cp_build_binary_op): cp_fully_fold integer_zerop
        arguments for -Waddress warning.  Fix up formatting.

2016-02-11  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/68726
        * pt.c (lookup_template_class_1): Check tsubst return value for
        error_mark_node.

2016-02-10  Jason Merrill  <jason@redhat.com>

        PR c++/68926
        * pt.c (resolve_nondeduced_context): Add complain parm.
        (do_auto_deduction): Pass it.
        * cvt.c (convert_to_void): Likewise.
        * decl.c (cp_finish_decl): Likewise.
        * init.c (build_new): Likewise.
        * rtti.c (get_tinfo_decl_dynamic): Likewise.
        * semantics.c (finish_decltype_type): Likewise.
        * typeck.c (decay_conversion): Likewise.
        * cp-tree.h: Adjust declaration.
        * call.c (standard_conversion): Add complain parm, pass it along.
        (implicit_conversion): Pass it.

        PR c++/69657
        * name-lookup.c (ambiguous_decl): Call remove_hidden_names.
        (lookup_name_real_1): Likewise.
        (remove_hidden_names): Handle non-functions too.

        PR c++/10200
        * parser.c (cp_parser_lookup_name): When looking for a template
        after . or ->, only consider class templates.
        (cp_parser_postfix_dot_deref_expression): Handle the current
        instantiation.  Remember a dependent object expression.
        * typeck2.c (build_x_arrow): Handle the current instantiation.

        * ptree.c (debug_tree): Implement for cp_expr.

2016-02-08  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/69139
        * parser.c (cp_parser_simple_type_specifier): Make the check
        for disambiguating between an 'auto' placeholder and an implicit
        template parameter more robust.

2016-02-08  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/69283
        PR c++/67835
        * decl2.c (mark_used): When given a TEMPLATE_DECL, return after
        setting its TREE_USED flag.

2016-02-08  Jason Merrill  <jason@redhat.com>

        PR c++/69657
        * name-lookup.c (do_nonmember_using_decl): Leave anticipated
        built-ins alone.

2016-02-08  Jakub Jelinek  <jakub@redhat.com>

        PR c++/59627
        * parser.c (cp_parser_omp_declare_reduction): Set assembler name
        of the DECL_OMP_DECLARE_REDUCTION_P decls.

2016-02-08  Marek Polacek  <polacek@redhat.com>

        PR c++/69688
        * constexpr.c (clear_cv_and_fold_caches): Renamed from clear_cv_cache.
        Call clear_fold_cache.
        * cp-tree.h: Adjust declaration.
        * decl.c (finish_enum_value_list): Call clear_cv_and_fold_caches
        rather than clear_cv_cache and clear_fold_cache.
        * typeck2.c (store_init_value): Call clear_cv_and_fold_caches.

2016-02-08  Jason Merrill  <jason@redhat.com>

        * cp-tree.h (CONV_FOLD, CONV_BACKEND_CONVERT): New.
        * cvt.c (convert): Pass CONV_BACKEND_CONVERT.
        (ocp_convert): Use *_maybe_fold.
        (cp_convert_to_pointer): Add dofold parameter.
        * cp-gimplify.c (cp_fold) [CONVERT_EXPR]: Call convert.

2016-02-05  Martin Sebor  <msebor@redhat.com>

        PR c++/69662
        * init.c (find_field_init): New function.
        (warn_placement_new_too_small): Call it.  Handle one-element arrays
        at ends of structures special.

2016-02-05  Jason Merrill  <jason@redhat.com>

        PR c++/68948
        * semantics.c (finish_expr_stmt): If expr is error_mark_node,
        make sure we've seen_error().

2016-02-05  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/68948
        * pt.c (tsubst_baselink): Diagnose an invalid constructor call
        if lookup_fnfields returns NULL_TREE and the name being looked
        up has the form A::A.

2016-02-04  Patrick Palka  <ppalka@gcc.gnu.org>

        * constexpr.c (cxx_eval_binary_expression): Fold equality
        comparisons involving PTRMEM_CSTs.

2016-02-04  Jakub Jelinek  <jakub@redhat.com>

        * class.c (find_flexarrays): Don't declare dom variable.
        (diagnose_flexarray): Likewise.

2016-02-02  Martain Sebor  <msebor@redhat.com>

        PR c++/69251
        PR c++/69253
        PR c++/69290
        PR c++/69277
        PR c++/69349
        * class.c (walk_subobject_offsets): Avoid testing the upper bound
        of a flexible array member for equality to null.
        (find_flexarrays): Remove spurious whitespace introduced in r231665.
        (diagnose_flexarrays): Avoid checking the upper bound of arrays.
        (check_flexarrays): Same.
        * decl.c (compute_array_index_type): Avoid special case for flexible
        array members.
        (grokdeclarator): Avoid calling compute_array_index_type for flexible
        array members.
        * error.c (dump_type_suffix): Revert changes introduced in r231665
        and rendered unnecessary by the changes above.
        * pt.c (tsubst):  Same.
        * tree.c (build_ctor_subob_ref): Handle flexible array members.
        * typeck2.c (digest_init_r): Revert changes introduced in r231665.
        (process_init_constructor_array): Same.
        (process_init_constructor_record): Same.

2016-02-03  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/69056
        * pt.c (try_one_overload): Handle comparing argument packs so
        that there is no conflict if we deduced more arguments of an
        argument pack than were explicitly specified.

2016-01-31  Jakub Jelinek  <jakub@redhat.com>
            Jason Merrill  <jason@redhat.com>

        PR c++/68763
        * tree.c (strip_typedefs) [FUNCTION_TYPE]: Avoid building a new
        function type if nothing is changing.

2016-01-31  Jason Merrill  <jason@redhat.com>

        PR c++/69009
        * pt.c (partial_specialization_p, impartial_args): New.
        (instantiate_decl): Call impartial_args.

        * mangle.c (maybe_check_abi_tags): New.
        (write_guarded_var_name): Call it.
        (mangle_ref_init_variable): Call check_abi_tags.

        * pt.c (lookup_template_class_1): Don't share TYPE_ATTRIBUTES
        between template and instantiation.

2016-01-29  Jakub Jelinek  <jakub@redhat.com>

        PR debug/66869
        * decl.c (wrapup_globals_for_namespace): Warn about unused static
        function declarations.

2016-01-29  Marek Polacek  <polacek@redhat.com>

        PR c++/69509
        PR c++/69516
        * constexpr.c (cxx_eval_array_reference): Give the "array subscript
        out of bound" error earlier.
        * init.c (build_vec_init): Change NE_EXPR into GT_EXPR.  Update the
        commentary.

2016-01-29  Patrick Palka  <ppalka@gcc.gnu.org>

        * name-lookup.c (begin_scope): After reusing a cp_binding_level
        structure, update free_binding_level before the structure's
        level_chain field gets cleared, not after.

2016-01-28  Jason Merrill  <jason@redhat.com>

        PR c++/67407
        * search.c (dfs_walk_once, dfs_walk_once_r)
        (dfs_walk_once_accessible_r, dfs_walk_once_accessible): Use
        hash_set instead of BINFO_MARKED.
        (dfs_unmark_r): Remove.

2016-01-28  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/24208
        * parser.c (LEXER_DEBUGGING_ENABLED_P): New macro.
        (cp_lexer_debugging_p): Use it.
        (cp_lexer_start_debugging): Likewise.
        (cp_lexer_stop_debugging): Likewise.

2016-01-27  Marek Polacek  <polacek@redhat.com>

        PR c/68062
        * typeck.c (cp_build_binary_op): Promote operand to unsigned, if
        needed.  Add -Wsign-compare warning.

2016-01-27  Ryan Burn  <contact@rnburn.com>

        PR cilkplus/69267
        * cp-gimplify.c (cilk_cp_gimplify_call_params_in_spawned_fn): Removed
        superfluous post_p argument in call to
        cilk_gimplify_call_params_in_spawned_fn.

2016-01-27  Marek Polacek  <polacek@redhat.com>

        PR c++/69379
        * constexpr.c (cxx_eval_constant_expression): Handle PTRMEM_CSTs
        wrapped in NOP_EXPRs.

2016-01-27  Martin Sebor  <msebor@redhat.com>

        PR c++/69317
        * mangle.c (mangle_decl): Reference the correct (saved) version
        of the ABI in -Wabi diagnostics.

2016-01-27  Marek Polacek  <polacek@redhat.com>

        PR c++/69496
        * constexpr.c (cxx_eval_array_reference): Evaluate the number of
        elements of the array.

2016-01-26  Jason Merrill  <jason@redhat.com>

        PR c++/68949
        * constexpr.c (register_constexpr_fundef): Keep the un-massaged body.
        (cxx_eval_call_expression): Don't look through clones.
        * optimize.c (maybe_clone_body): Clear DECL_SAVED_TREE of the alias.
        * semantics.c (expand_or_defer_fn_1): Keep DECL_SAVED_TREE of
        maybe-in-charge *tor.

2016-01-26  Jason Merrill  <jason@redhat.com>

        PR c++/68782
        * constexpr.c (cxx_eval_bare_aggregate): Update TREE_CONSTANT
        and TREE_SIDE_EFFECTS.
        (cxx_eval_constant_expression) [CONSTRUCTOR]: Call
        verify_constructor_flags.

2016-01-26  Jakub Jelinek  <jakub@redhat.com>

        PR c++/68357
        * cp-gimplify.c (cp_fold): If some operand folds to error_mark_node,
        return error_mark_node instead of building trees with error_mark_node
        operands.

2016-01-26  David Malcolm  <dmalcolm@redhat.com>

        PR other/69006
        * error.c (print_instantiation_partial_context_line): Add missing
        newlines from output for the t == NULL case.
        (print_instantiation_partial_context): Remove call to pp_newline.

2016-01-24  Patrick Palka  <ppalka@gcc.gnu.org>

        Revert:
        2016-01-18  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/11858
        PR c++/24663
        PR c++/24664
        * decl.c (grokdeclarator): Don't decay array parameter type to
        a pointer type if it's dependent.
        (grokparms): Invoke strip_top_quals instead of directly invoking
        cp_build_qualified_type.
        * pt.c (decay_dependent_array_parm_type): New static function.
        (type_unification_real): Call decay_dependent_array_parm_type
        to decay a dependent array parameter type to its corresponding
        pointer type before unification.
        (more_specialized_fn): Likewise.
        (get_bindings): Likewise.
        * tree.c (cp_build_qualified_type): Trivial typofix in
        documentation.

2016-01-23  Martin Sebor  <msebor@redhat.com>

        PR c++/58109
        PR c++/69022
        * decl2.c (is_late_template_attribute): Handle dependent argument
        to attribute align and attribute vector_size.

2016-01-21  Jason Merrill  <jason@redhat.com>

        PR c++/69392
        * lambda.c (lambda_capture_field_type): Handle 'this' specially
        for init-capture, too.

        PR c++/65687
        * decl.c (type_is_deprecated): Don't look into a typedef.

        PR c++/40751
        PR c++/64987
        * decl.c (copy_type_enum): Respect TYPE_USER_ALIGN.

        PR c++/43407
        * decl.c (start_enum): Add attributes parameter.
        * parser.c (cp_parser_enum_specifier): Pass it.
        * pt.c (lookup_template_class_1): Pass it.
        * cp-tree.h: Adjust.

2016-01-19  Jason Merrill  <jason@redhat.com>

        PR c++/59759
        * pt.c (convert_template_argument): Handle VAR_DECL properly.

2016-01-19  Marek Polacek  <polacek@redhat.com>

        PR c++/68586
        * constexpr.c (clear_cv_cache): New.
        * cp-gimplify.c (clear_fold_cache): New.
        * cp-tree.h (clear_cv_cache, clear_fold_cache): Declare.
        * decl.c (finish_enum_value_list): Call them.

        PR c++/68965
        * pt.c (tsubst_copy): Mark elements in expanded vector as used.

2016-01-18  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/11858
        PR c++/24663
        PR c++/24664
        * decl.c (grokdeclarator): Don't decay array parameter type to
        a pointer type if it's dependent.
        (grokparms): Invoke strip_top_quals instead of directly invoking
        cp_build_qualified_type.
        * pt.c (decay_dependent_array_parm_type): New static function.
        (type_unification_real): Call decay_dependent_array_parm_type
        to decay a dependent array parameter type to its corresponding
        pointer type before unification.
        (more_specialized_fn): Likewise.
        (get_bindings): Likewise.
        * tree.c (cp_build_qualified_type): Trivial typofix in
        documentation.

2016-01-18  Jason Merrill  <jason@redhat.com>

        * cp-gimplify.c (cp_fold) [CONSTRUCTOR]: Don't clobber the input.

        * cp-gimplify.c (cp_fold): Remove unnecessary special cases.

        PR c++/68767
        * cp-gimplify.c (cp_fold) [COND_EXPR]: Simplify.  Do fold COND_EXPR.
        (contains_label_1, contains_label_p): Remove.

2016-01-16  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/69091
        * pt.c (type_dependent_expression_p): For a function template
        specialization, a type is dependent iff any of its template
        arguments are.

2016-01-16  Patrick Palka  <ppalka@gcc.gnu.org>

        * cp-array-notation.c (cp_expand_cond_array_notations): Return
        error_mark_node only if find_rank failed, not if it was
        successful.

2016-01-16  Patrick Palka  <ppalka@gcc.gnu.org>

        PR c++/68936
        * tree.c (build_min_non_dep_call_vec): Don't retain the
        KOENIG_LOOKUP_P flag of the non-dependent expression that's
        been built.
        (build_min_non_dep_op_overload): Instead, do it here.

2016-01-15  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/68271
        * parser.h (cp_token): Remove pragma_kind field.  Add comment
        with number of unused bits.
        * parser.c (eof_token): Remove pragma_kind field initializer.
        (cp_lexer_get_preprocessor_token): Don't set pragma_kind
        field, don't clear CPP_PRAGMA u.value.
        (cp_parser_pragma_kind): New function.
        (cp_parser_omp_sections_scope, cp_parser_oacc_kernels_parallel,
        cp_parser_omp_construct, cp_parser_initial_pragma,
        cp_parser_pragma): Use cp_parser_pragma_kind instead of accessing
        pragma_kind field.

2016-01-15  Jason Merrill  <jason@redhat.com>

        PR c++/68847
        * call.c (build_cxx_call): Use fold_non_dependent_expr.

        * typeck2.c (cxx_incomplete_type_diagnostic): Use the location of
        value.

        PR c++/69257
        * typeck.c (decay_conversion): Don't call mark_rvalue_use for
        array/function-to-pointer conversion.  Call
        complete_type_or_maybe_complain for lvalue-to-rvalue conversion.
        * call.c (convert_like_real): Print call context if
        decay_conversion errors.

2016-01-14  Tom de Vries  <tom@codesourcery.com>

        PR tree-optimization/68773
        * parser.c (cp_parser_oacc_declare, cp_parser_omp_declare_target): Don't
        set force_output.

2016-01-14  Jason Merrill  <jason@redhat.com>

        PR c++/69261
        * constexpr.c (find_array_ctor_elt): Handle splitting RANGE_EXPR.

2016-01-12  Marek Polacek  <polacek@redhat.com>

        PR c++/68979
        * constexpr.c (cxx_eval_check_shift_p): Use permerror rather than
        error_at and adjust the return value.

2016-01-12  Jakub Jelinek  <jakub@redhat.com>

        PR objc++/68511
        PR c++/69213
        * cp-gimplify.c (cp_gimplify_expr) <case INIT_EXPR>: Don't return
        GS_ERROR whenever seen_error (), only if *expr_p contains
        cilk spawn stmt, but cilk_detect_spawn_and_unwrap failed.

        PR c++/66808
        PR c++/69000
        * pt.c (tsubst_decl): If not local_p, clear DECL_TEMPLATE_INFO.

2016-01-11  Jason Merrill  <jason@redhat.com>

        PR c++/69131
        * method.c (walk_field_subobs): Add dtor_from_ctor parm.
        (process_subob_fn): Likewise.  Don't consider triviality if true.
        (synthesize_method_walk): Pass it.

2016-01-11  David Malcolm  <dmalcolm@redhat.com>

        PR c++/68795
        * parser.c (cp_parser_postfix_expression): Initialize
        close_paren_loc to UNKNOWN_LOCATION; only use it if
        it has been written to by
        cp_parser_parenthesized_expression_list.
        (cp_parser_parenthesized_expression_list): Document the behavior
        with respect to the CLOSE_PAREN_LOC param.

2016-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR c++/69211
        * cp-gimplify.c (cp_fold): If COMPOUND_EXPR or MODIFY_EXPR
        folded operands have side-effects, but folding changed any of them,
        build a new tree with the folded operands instead of returning the
        unfolded tree.

2016-01-09  Marek Polacek  <polacek@redhat.com>

        PR c++/69113
        * decl2.c (comdat_linkage): Only set DECL_COMDAT if TREE_PUBLIC is set.

2016-01-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/69164
        * class.c (layout_class_type): Use copy_node to copy FIELD_DECLs.

2016-01-08  Jason Merrill  <jason@redhat.com>

        PR c++/69158
        * constexpr.c (cxx_fold_indirect_ref): Handle array type differing
        in completion.

2016-01-08  Marek Polacek  <polacek@redhat.com>

        PR c++/68449
        * constexpr.c (cxx_eval_constant_expression): Handle NULL initializer.

2016-01-08  Jason Merrill  <jason@redhat.com>

        * constexpr.c (cxx_eval_call_expression): Remove convert_to_void
        workaround.

        PR c++/68983
        PR c++/67557
        * cvt.c (convert_to_void): Don't strip a TARGET_EXPR of
        TREE_ADDRESSABLE type.

        PR c++/68983
        PR c++/67557
        * call.c (unsafe_copy_elision_p): Look through COMPOUND_EXPR.

2016-01-05  Nathan Sidwell  <nathan@acm.org>

        PR c++/58583
        * pt.c (build_non_dependent_expr): Don't try a checking fold when
        parsing an nsdmi.

2016-01-04  Jakub Jelinek  <jakub@redhat.com>

        Update copyright years.
\f
Copyright (C) 2016 Free Software Foundation, Inc.

Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.