re PR c/7652 (-Wswitch-break : Warn if a switch case falls through)

[gcc.git] / gcc / cp / ChangeLog

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
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