Daily bump.
[gcc.git] / gcc / cp / ChangeLog
index 7ad2d53f2c72fe142b3378e80e7a28a7d99e13cf..94de1c00ef70041d40d0c8527d88f80a079f90ad 100644 (file)
-2020-11-04  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/97670
-       * semantics.c (finish_omp_clauses): Look through array reductions to
-       find underlying decl to clear in the aligned_head bitmap.  Use
-       DECL_UID (t) instead of DECL_UID (OMP_CLAUSE_DECL (c)) when clearing
-       in the bitmap.  Only diagnose errors about allocate vars not being
-       privatized on the same construct on allocate clause if it has
-       a DECL_P OMP_CLAUSE_DECL.
-
-2020-11-04  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * constexpr.c (potential_constant_expression_1): Handle
-       expressions known to be non-constant for Objective-C.
-
-2020-11-03  Jason Merrill  <jason@redhat.com>
-
-       * tree.c (is_byte_access_type): Don't use char_type_p.
-
-2020-11-03  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/97663
-       * parser.c (cp_parser_init_declarator): Don't try to parse
-       C++17 deduction guides if there are any type specifiers even when
-       type is NULL.
-
-2020-11-03  Kamlesh Kumar  <kamleshbhalui@gmail.com>
-           Jason Merrill  <jason@redhat.com>
-
-       PR c++/97453
-       DR2303
-       * pt.c (get_template_base): Consider closest base in template
-       deduction when base of base also matches.
-
-2020-11-03  Nathan Sidwell  <nathan@acm.org>
-
-       * pt.c (tsubst_expr): Simplify using decl instantiation, add
-       asserts.
-
-2020-11-03  Nathan Sidwell  <nathan@acm.org>
-
-       * class.c (copy_fndecl_with_name):  Always not top level.
-       (build_cdtor_clones): Add update_methods parm, use it to
-       conditionally update the method vec.  Return void
-       (clone_cdtor): Adjust.
-       (clone_constructors_and_destructors): Adjust comment.
-
-2020-11-03  Nathan Sidwell  <nathan@acm.org>
-
-       * pt.c (primary_template_specialization_p): Use
-       VAR_OR_FUNCTION_DECL_P.
-       (tsubst_template_decl): Check for FUNCTION_DECL, not !TYPE && !VAR
-       for registering a specialization.
-
-2020-11-03  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (fixup_deferred_exception_variants): Declare.
-       * parser.c (cp_parser_class_specifier_1): Call it when
-       completing deferred parses rather than creating a variant.
-       (cp_parser_member_declaration): Move comment from ...
-       (cp_parser_noexcept_specification_opt): ... here.  Refactor the
-       deferred parse.
-       * tree.c (fixup_deferred_exception_variants): New.
-
-2020-11-03  Nathan Sidwell  <nathan@acm.org>
-
-       * pt.c (tsubst_lambda_expr): Reorder extra-scope handling to match
-       the non-template case.
-       (instantiate_body): Move a couple of declarations to their
-       initializers.
-
-2020-11-03  Nathan Sidwell  <nathan@acm.org>
-
-       * decl.c (duplicate_decls): Return error_mark_node fo extern-c
-       mismatch.
-
-2020-11-03  Marek Polacek  <polacek@redhat.com>
-
-       * constexpr.c (potential_constant_expression_1): Treat
-       __PRETTY_FUNCTION__ inside a template function as
-       potentially-constant.
-       * pt.c (uses_template_parms): Call
-       instantiation_dependent_expression_p instead of
-       value_dependent_expression_p.
-       (instantiation_dependent_expression_p): Check
-       potential_constant_expression before calling
-       value_dependent_expression_p.
-
-2020-11-03  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/97632
-       * init.c (build_new_1): Disable -Winit-list-lifetime for an unevaluated
-       operand.
-
-2020-11-03  Nathan Sidwell  <nathan@acm.org>
-
-       * tree.c (bind_template_template_parm): Mark the parm as a
-       template parm.
-       (cp_tree_equal): Refactor CALL_EXPR.  Use comp_template_args for
-       TREE_VECs.
-
-2020-11-03  Nathan Sidwell  <nathan@acm.org>
-
-       * rtti.c (init_rtti_processing): Move var decl to its init.
-       (get_tinfo_decl): Likewise.  Break out creation to called helper
-       ...
-       (get_tinfo_decl_direct): ... here.
-       (build_dynamic_cast_1): Move var decls to their initializers.
-       (tinfo_base_init): Set decl's location to BUILTINS_LOCATION.
-       (get_tinfo_desc): Only push ABI namespace when needed.  Set type's
-       context.
-
-2020-11-02  Nathan Sidwell  <nathan@acm.org>
-
-       * decl.c (start_decl_1): Refactor declarations.  Fixup some
-       whitespace.
-       (lookup_and_check_tag): Fixup some whitespace.
-
-2020-11-02  Nathan Sidwell  <nathan@acm.org>
-
-       * decl.c (duplicate_decls): Refactor some template & builtin
-       handling.
-
-2020-11-02  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (struct cxx_int_tree_map): Delete.
-       (struct cxx_int_tree_map_hasher): Delete.
-       * cp-gimplify.c (cxx_int_tree_map_hasher::equal): Delete.
-       (cxx_int_tree_map_hasher::hash): Delete.
-
-2020-11-02  Patrick Palka  <ppalka@redhat.com>
-
-       * class.c (finish_struct_1): Don't call clear_satisfaction_cache.
-       * constexpr.c (clear_cv_and_fold_caches): Likewise.  Remove bool
-       parameter.
-       * constraint.cc (clear_satisfaction_cache): Remove definition.
-       * cp-tree.h (clear_satisfaction_cache): Remove declaration.
-       (clear_cv_and_fold_caches): Remove bool parameter.
-       * typeck2.c (store_init_value): Remove argument to
-       clear_cv_and_fold_caches.
-
-2020-11-01  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * parser.c (cp_parser_objc_at_property_declaration): Use any
-       exisiting syntax error to suppress complaints about a missing
-       closing parenthesis in parsing property attributes.
-
-2020-10-30  Jakub Jelinek  <jakub@redhat.com>
-
-       * semantics.c (finish_omp_clauses) <case OMP_CLAUSE_ALLOCATE>: Handle
-       non-static members in methods.
-       * pt.c (tsubst_omp_clauses): Handle OMP_CLAUSE_ALLOCATE.
-
-2020-10-29  Marek Polacek  <polacek@redhat.com>
-
-       DR 625
-       PR c++/97479
-       * parser.c (cp_parser_type_id_1): Reject using auto as
-       a template-argument in C++20.
-
-2020-10-29  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93107
-       * pt.c (do_auto_deduction): Call resolve_nondeduced_context for
-       the elements of a { } list.
-
-2020-10-29  Marek Polacek  <polacek@redhat.com>
-
-       * typeck.c (do_warn_enum_conversions): Don't warn for SPACESHIP_EXPR.
-       (cp_build_binary_op): Reject float <=> enum or enum <=> float.  Use
-       CP_INTEGRAL_TYPE_P instead of INTEGRAL_OR_ENUMERATION_TYPE_P.
-
-2020-10-29  Patrick Palka  <ppalka@redhat.com>
-
-       * constraint.cc (get_normalized_constraints): Remove 'args'
-       parameter.  Pass NULL_TREE as the initial template arguments to
-       normalize_expression.
-       (get_normalized_constraints_from_info): Remove 'args' parameter
-       and adjust the call to get_normalized_constraints.
-       (get_normalized_constraints_from_decl): Remove 'args' local
-       variable and adjust call to get_normalized_constraints_from_info.
-       (normalize_concept_definition): Remove 'args' local variable
-       and adjust call to get_normalized_constraints.
-       (normalize_constraint_expression): Remove the two-parameter
-       overload.  Remove 'args' parameter from the three-parameter
-       overload and update function comment accordingly.  Remove
-       default argument from 'diag' parameter.  Adjust call to
-       get_normalized_constraints.
-       (finish_nested_requirement): Adjust call to
-       normalize_constraint_expression.
-       (strictly_subsumes): Remove 'args' parameter.  Adjust call to
-       get_normalized_constraints_from_info.
-       (weakly_subsumes): Likewise.
-       * cp-tree.h (strictly_subsumes): Remove 'args' parameter.
-       (weakly_subsumes): Likewise.
-       * pt.c (process_partial_specialization): Adjust call to
-       strictly_subsumes.
-       (is_compatible_template_arg): Adjust call to weakly_subsumes.
-
-2020-10-29  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/97412
-       * constraint.cc (normalize_concept_check): Don't call
-       tsubst_template_args when 'args' is NULL.
-
-2020-10-29  Jason Merrill  <jason@redhat.com>
-
-       PR c++/97388
-       * constexpr.c (cxx_eval_outermost_constant_expr): Revert to
-       original expression if evaluation sets non_constant_p.
-
-2020-10-29  Jakub Jelinek  <jakub@redhat.com>
-           Jason Merrill  <jason@redhat.com>
-
-       PR c++/97388
-       * constexpr.c (cxx_bind_parameters_in_call): Set non_constant_args
-       if the parameter type has a non-trivial destructor.
-       (cxx_eval_call_expression): Only unshare arguments if we're
-       memoizing this evaluation.
-
-2020-10-29  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/95808
-       * cp-tree.h (enum cp_tree_index): Add CPTI_HEAP_VEC_UNINIT_IDENTIFIER
-       and CPTI_HEAP_VEC_IDENTIFIER.
-       (heap_vec_uninit_identifier, heap_vec_identifier): Define.
-       * decl.c (initialize_predefined_identifiers): Initialize those
-       identifiers.
-       * constexpr.c (cxx_eval_call_expression): Reject array allocations
-       deallocated with non-array deallocation or non-array allocations
-       deallocated with array deallocation.
-       (non_const_var_error): Handle heap_vec_uninit_identifier and
-       heap_vec_identifier too.
-       (cxx_eval_constant_expression): Handle also heap_vec_uninit_identifier
-       and in that case during initialization replace it with
-       heap_vec_identifier.
-       (find_heap_var_refs): Handle heap_vec_uninit_identifier and
-       heap_vec_identifier too.
-
-2020-10-29  Nathan Sidwell  <nathan@acm.org>
-
-       * pt.c (push_template_decl): Do not give function-scope entities
-       other than implicit typedefs a template header. Do not readd
-       template info to a redeclared template.
-
-2020-10-28  Marek Polacek  <polacek@redhat.com>
-
-       * decl.c (grokdeclarator): Offer a fix-it hint for the "unnecessary
-       parentheses in declaration" warning.
-       * parser.c (cp_parser_direct_declarator): When setting
-       declarator->parenthesized, use a location range.
-
-2020-10-28  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/97573
-       * call.c (build_conditional_expr_1): Warn about the deprecated
-       enum/real type conversion in C++20.  Also warn about a non-enumerated
-       and enumerated type in ?: when -Wenum-conversion is on.
-       * typeck.c (do_warn_enum_conversions): New function.
-       (cp_build_binary_op): Call it.
-
-2020-10-28  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/96675
-       PR c++/96742
-       * pt.c (tsubst_copy_and_build): Call value_dependent_expression_p or
-       type_dependent_expression_p instead of type_dependent_expression_p_push.
-       But only call value_dependent_expression_p for expressions that are
-       potential_constant_expression.
-
-2020-10-28  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94799
-       * parser.c (cp_parser_class_name): Use parser->scope when
-       setting typename_p.
-
-2020-10-28  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/86773
-       * parser.c (cp_parser_fold_expression): Return error_mark_node
-       if a left fold is preceded by an expression.
-
-2020-10-28  Nathan Sidwell  <nathan@acm.org>
-
-       * parser.c (cp_parser_omp_declare_reduction): Set
-       DECL_LOCAL_DECL_P before push_template_decl.
-       * pt.c (instantiate_body): Nested fns do not have template_info.
-
-2020-10-28  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/95132
-       * decl2.c (mark_used): Move up the constraints_satisfied_p check
-       so that we check constraints before calling maybe_instantiate_decl.
-
-2020-10-28  Nathan Sidwell  <nathan@acm.org>
-
-       * pt.c (push_template_decl): Refactor for some RAII.
-
-2020-10-28  Jakub Jelinek  <jakub@redhat.com>
-
-       * parser.c (cp_parser_omp_clause_name): Handle allocate.
-       (cp_parser_omp_clause_allocate): New function.
-       (cp_parser_omp_all_clauses): Handle PRAGMA_OMP_CLAUSE_ALLOCATE.
-       (OMP_FOR_CLAUSE_MASK, OMP_SECTIONS_CLAUSE_MASK,
-       OMP_PARALLEL_CLAUSE_MASK, OMP_SINGLE_CLAUSE_MASK,
-       OMP_TASK_CLAUSE_MASK, OMP_TASKGROUP_CLAUSE_MASK,
-       OMP_DISTRIBUTE_CLAUSE_MASK, OMP_TEAMS_CLAUSE_MASK,
-       OMP_TARGET_CLAUSE_MASK, OMP_TASKLOOP_CLAUSE_MASK): Add
-       PRAGMA_OMP_CLAUSE_ALLOCATE.
-       * semantics.c (finish_omp_clauses): Handle OMP_CLAUSE_ALLOCATE.
-       * pt.c (tsubst_omp_clauses): Likewise.
-
-2020-10-27  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (struct lang_type): Delete nested_udts field.
-       (CLASSTYPE_NESTED_UTDS): Delete.
-       * name-lookup.h (binding_table, binding_entry): Delete typedefs.
-       (bt_foreach_proc): Likewise.
-       (struct binding_entry_s): Delete.
-       (SCOPE_DEFAULT_HT_SIZE, CLASS_SCOPE_HT_SIZE)
-       (NAMESPACE_ORDINARY_HT_SIZE, NAMESPACE_STD_HT_SIZE)
-       (GLOBAL_SCOPE_HT_SIZE): Delete.
-       (binding_table_foreach, binding_table_find): Delete declarations.
-       * name-lookup.c (ENTRY_INDEX): Delete.
-       (free_binding_entry): Delete.
-       (binding_entry_make, binding_entry_free): Delete.
-       (struct binding_table_s): Delete.
-       (binding_table_construct, binding_table_free): Delete.
-       (binding_table_new, binding_table_expand): Delete.
-       (binding_table_insert, binding_table_find): Delete.
-       (binding_table_foreach): Delete.
-       (maybe_process_template_type_declaration): Delete
-       CLASSTYPE_NESTED_UTDS insertion.
-       (do_pushtag): Likewise.
-       * decl2.c (bt_reset_linkage_1): Fold into reset_type_linkage_1.
-       (reset_type_linkage_2, bt_reset_linkage_2): Fold into
-       reset_type_linkage.
-       * pt.c (instantiate_class_template_1): Delete NESTED_UTDs comment.
-       (bt_instantiate_type_proc): Delete.
-       (do_type_instantiation): Instantiate implicit typedef fields.
-       Delete NESTED_UTD walk.
-       * search.c (lookup_field_r): Delete unreachable NESTED_UTD
-       search.
-
-2020-10-27  Nathan Sidwell  <nathan@acm.org>
-
-       * parser.c (cp_parser_explicit_instantiation): Refactor some RAII.
-       * pt.c (bt_instantiate_type_proc): DATA is the tree, pass type to
-       do_type_instantiation.
-       (do_type_instantiation): Require T to be a type.  Refactor for
-       some RAII.
-
-2020-10-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
-
-       * cp-tree.h (CPTK_IS_NOTHROW_ASSIGNABLE): New.
-       (CPTK_IS_NOTHROW_CONSTRUCTIBLE): Likewise.
-       (is_nothrow_xible): Likewise.
-       * method.c (is_nothrow_xible): New.
-       (is_trivially_xible): Tweak.
-       * parser.c (cp_parser_primary_expression): Handle the new RID_*.
-       (cp_parser_trait_expr): Likewise.
-       * semantics.c (trait_expr_value): Handle the new RID_*.
-       (finish_trait_expr): Likewise.
-
-2020-10-24  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/96241
-       * constexpr.c (cxx_eval_array_reference): Set up ctx->ctor if we
-       are initializing an aggregate.  Call free_constructor on the new
-       CONSTRUCTOR if it isn't returned from cxx_eval_constant_expression.
-
-2020-10-23  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/91741
-       * typeck.c (cp_build_binary_op): Implement -Wsizeof-array-div.
-
-2020-10-22  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/97328
-       * constexpr.c (init_subob_ctx): Don't punt on RANGE_EXPR
-       indexes, instead build a sub-aggregate initialization context
-       with no subobject.
-
-2020-10-22  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/96575
-       * constexpr.c (cxx_eval_constant_expression)
-       <case EMPTY_CLASS_EXPR>: Lower it to a CONSTRUCTOR.
-       (potential_constant_expression_1) <case COMPOUND_EXPR>: Remove
-       now-redundant handling of COMPOUND_EXPR with EMPTY_CLASS_EXPR
-       second operand.
-       <case EMPTY_CLASS_EXPR>: Return true instead of false.
-
-2020-10-22  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/97511
-       * decl.c (duplicate_decls): Return NULL_TREE if
-       DECL_TEMPLATE_PARM_P differ.
-
-2020-10-20  Nathan Sidwell  <nathan@acm.org>
-
-       * name-lookup.c (push_local_extern_decl_alias): Reconstextualize
-       alias' parm decls.  Drop any default args.
-
-2020-10-19  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/97438
-       * coroutines.cc (struct coroutine_info): Add a field to
-       record that we emitted a promise type error.
-       (coro_promise_type_found_p): Check for the case that the
-       promise type contains both return_void and return_value.
-       Emit an error if so, with information about the wrong
-       type methods.
-
-2020-10-16  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/97460
-       * pt.c (push_template_decl): Check DECL_LANG_SPECIFIC in friend
-       case.
-
-2020-10-16  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/96258
-       * parser.c (cp_parser_declaration): Make token2 point to EOF if
-       token1 was EOF.
-
-2020-10-15  Jason Merrill  <jason@redhat.com>
-
-       PR c++/95844
-       * decl.c (copy_fn_p): Return false for a function that is neither a
-       constructor nor an assignment operator.
-       (move_signature_fn_p): Likewise.
-
-2020-10-15  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/97406
-       PR c++/85901
-       * cxx-pretty-print.c (pp_cxx_type_specifier_seq): Handle OFFSET_TYPE.
-       (cxx_pretty_printer::abstract_declarator): Fix the printing of ')'.
-       (cxx_pretty_printer::direct_abstract_declarator): Handle OFFSET_TYPE.
-       (cxx_pretty_printer::type_id): Likewise.  Print the abstract declarator
-       for pointers-to-members.
-
-2020-10-14  Jason Merrill  <jason@redhat.com>
-
-       PR c++/97358
-       * pt.c (check_for_bare_parameter_packs): Diagnose use of
-       capture pack.
-
-2020-10-14  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (struct lang_decl_fn): Adjust context comment.
-       (DECL_FRIEND_P): Replace with ...
-       (DECL_UNIQUE_FRIEND_P): ... this.  Only for FUNCTION_DECLs.
-       (DECL_FRIEND_CONTEXT): Adjust.
-       * class.c (add_implicitly_declared_members): Detect friendly
-       spaceship from context.
-       * constraint.cc (remove_constraints): Use a checking assert.
-       (maybe_substitute_reqs_for): Use DECL_UNIQUE_FRIEND_P.
-       * decl.c (check_no_redeclaration_friend_default_args):
-       DECL_UNIQUE_FRIEND_P is signficant, not hiddenness.
-       (duplicate_decls): Adjust DECL_UNIQUE_FRIEND_P clearing.
-       (redeclaration_error_message): Use DECL_UNIQUE_FRIEND_P.
-       (start_preparsed_function): Correct in-class friend processing.
-       Refactor some initializers.
-       (grokmethod): Directly check friend decl-spec.
-       * decl2.c (grokfield): Check DECL_UNIQUE_FRIEND_P.
-       * friend.c (do_friend): Set DECL_UNIQUE_FRIEND_P first, remove
-       extraneous conditions.  Don't re set it afterwards.
-       * name-lookup.c (lookup_elaborated_type_1): Simplify revealing
-       code.
-       (do_pushtag): Likewise.
-       * pt.c (optimize_specialization_lookup_p): Check
-       DECL_UNIQUE_FRIEND_P.
-       (push_template_decl): Likewise.  Drop unneeded friend setting.
-       (type_dependent_expression_p): Check DECL_UNIQUE_FRIEND_P.
-
-2020-10-14  Nathan Sidwell  <nathan@acm.org>
-
-       * name-lookup.c (push_local_extern_decl_alias): Push into alias's
-       namespace and use pushdecl.
-       (do_pushdecl_with_scope): Clarify behaviour.
-
-2020-10-12  Martin Sebor  <msebor@redhat.com>
-
-       PR c++/97201
-       * error.c (dump_type_suffix): Handle both the C and C++ forms of
-       zero-length arrays.
-
-2020-10-12  Martin Sebor  <msebor@redhat.com>
-
-       PR c++/96511
-       PR middle-end/96384
-       * init.c (warn_placement_new_too_small): Call builtin_objsize instead
-       of duplicating what it does.
-
-2020-10-08  Jason Merrill  <jason@redhat.com>
-
-       PR c++/96805
-       PR c++/96199
-       * pt.c (tsubst_aggr_type): Don't build a TYPENAME_TYPE when
-       entering_scope.
-       (tsubst_template_decl): Use tsubst_aggr_type.
-
-2020-10-08  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/97052
-       * constraint.cc (build_type_constraint): Temporarily increment
-       processing_template_decl before calling build_concept_check.
-       * pt.c (make_constrained_placeholder_type): Likewise.
-
-2020-10-08  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/96229
-       * parser.c (cp_parser_class_specifier_1): Move call to
-       associate_classtype_constraints from here to ...
-       (cp_parser_class_head): ... here.
-       * pt.c (is_compatible_template_arg): Correct documentation to
-       say "argument is _no_ more constrained than the parameter".
-
-2020-10-07  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/97010
-       * pt.c (tsubst_copy_and_build) <case TEMPLATE_ID_EXPR>: Call
-       tsubst_copy_and_build explicitly instead of using the RECUR macro.
-       Handle a TEMPLATE_ID_EXPR with an IDENTIFIER_NODE as its operand.
-       <case CALL_EXPR>: Perform ADL for a TEMPLATE_ID_EXPR with an
-       IDENTIFIER_NODE as its operand.
-
-2020-10-07  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/88115
-       PR libstdc++/97273
-       * tree.c (cp_tree_equal) <case ALIGNOF_EXPR>: Return false if
-       ALIGNOF_EXPR_STD_P differ.
-
-2020-10-07  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (struct language_function): Delete extern_decl_map.
-       (DECL_LOCAL_DECL_ALIAS): New.
-       * name-lookup.h (is_local_extern): Delete.
-       * name-lookup.c (set_local_extern_decl_linkage): Replace with ...
-       (push_local_extern_decl): ... this new function.
-       (do_pushdecl): Call new function after pushing new decl.  Unhide
-       hidden non-functions.
-       (is_local_extern): Delete.
-       * decl.c (layout_var_decl): Do not allow VLA local externs.
-       * decl2.c (mark_used): Also mark DECL_LOCAL_DECL_ALIAS. Drop old
-       local-extern treatment.
-       * parser.c (cp_parser_oacc_declare): Deal with local extern aliases.
-       * pt.c (tsubst_expr): Adjust local extern instantiation.
-       * cp-gimplify.c (cp_genericize_r): Remap DECL_LOCAL_DECLs.
-
-2020-10-07  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (DECL_BUILTIN_P): Rename to ...
-       (DECL_UNDECLARED_BUILTIN_P): ... here.
-       * decl.c (duplicate_decls): Adjust.
-       * name-lookup.c (anticipated_builtin_p): Adjust.
-       (do_nonmember_using_decl): Likewise.
-
-2020-10-07  Nathan Sidwell  <nathan@acm.org>
-
-       * tree.c (build_cp_fntype_variant): Clear
-       TYPE_DEPENDENT_P_VALID if necessary.
-
-2020-10-06  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/97297
-       * parser.c (cp_parser_direct_declarator): When checking if a
-       name is a function template declaration for the P0634R3 case,
-       look in uninstantiated templates too.
-
-2020-10-05  Marek Polacek  <polacek@redhat.com>
-
-       * cp-tree.h (NON_UNION_CLASS_TYPE_P): Fix typo in a comment.
-
-2020-10-05  Richard Biener  <rguenther@suse.de>
-           Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/97197
-       * error.c (dump_expr): Handle TARGET_MEM_REF.
-
-2020-10-05  Nathan Sidwell  <nathan@acm.org>
-
-       * name-lookup.c (maybe_add_fuzzy_decl): New.
-       (maybe_add_fuzzy_binding): New.
-       (consider_binding_level): Use intermediate sortable vector for
-       namespace bindings.
-
-2020-10-02  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/97014
-       * cxx-pretty-print.c (pp_cxx_template_argument_list): If the
-       argument is template_parm_object_p, print its DECL_INITIAL.
-
-2020-10-02  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (lang_decl_base): anticipated_p is not used for
-       anticipatedness.
-       (DECL_ANTICIPATED): Delete.
-       * decl.c (duplicate_decls): Delete DECL_ANTICIPATED_management,
-       use was_hidden.
-       (cxx_builtin_function): Drop DECL_ANTICIPATED setting.
-       (xref_tag_1): Drop DECL_ANTICIPATED assert.
-       * name-lookup.c (name_lookup::adl_class_only): Drop
-       DECL_ANTICIPATED check.
-       (name_lookup::search_adl): Always dedup.
-       (anticipated_builtin_p): Reimplement.
-       (do_pushdecl): Drop DECL_ANTICIPATED asserts & update.
-       (lookup_elaborated_type_1): Drop DECL_ANTICIPATED update.
-       (do_pushtag): Drop DECL_ANTICIPATED setting.
-       * pt.c (push_template_decl): Likewise.
-       (tsubst_friend_class): Likewise.
-
-2020-10-02  Nathan Sidwell  <nathan@acm.org>
-
-       * name-lookup.c (consider_decl): New, broken out of ...
-       (consider_binding_level): ... here.  Iterate the hash table for
-       namespace bindings.
-
-2020-10-02  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (base_ctor_omit_inherited_parms): Declare.
-       * class.c (add_method): Refactor main loop, only pass fns to
-       ctor_omit_inherited_parms.
-       (build_cdtor_clones): Rename bool parms.
-       (clone_cdtor): Call base_ctor_omit_inherited_parms.
-       * method.c (base_ctor_omit_inherited_parms): New, broken out of
-       ...
-       (ctor_omit_inherited_parms): ... here, call it with
-       DECL_CLONED_FUNCTION.
-
-2020-10-02  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (cp_fname_init): Delete declaration.
-       * decl.c (cp_fname_init): Merge into only caller ...
-       (cp_make_fname): ... here & refactor.
-
-2020-10-02  Jason Merril  <jason@redhat.com>
-
-       * call.c (build_operator_new_call): Set CALL_FROM_NEW_OR_DELETE_P.
-       (build_op_delete_call): Likewise.
-       * init.c (build_new_1, build_vec_delete_1, build_delete): Not here.
-       (build_delete):
-
-2020-10-02  Jason Merril  <jason@redhat.com>
-
-       * lambda.c (call_from_lambda_thunk_p): New.
-       * cp-gimplify.c (cp_genericize_r): Use it.
-       * pt.c (tsubst_copy_and_build): Use it.
-       * typeck.c (check_return_expr): Use it.
-       * cp-tree.h: Declare it.
-       (CALL_FROM_NEW_OR_DELETE_P): Move to gcc/tree.h.
-
-2020-10-01  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (DECL_ANTICIPATED): Adjust comment.
-       (DECL_HIDDEN_P, TYPE_HIDDEN_P): Delete.
-       * tree.c (ovl_insert): Delete DECL_HIDDEN_P assert.
-       (ovl_skip_hidden): Likewise.
-
-2020-10-01  Nathan Sidwell  <nathan@acm.org>
-
-       * name-lookup.c (pushdecl_top_level): Assert incoming context is
-       null, add global_namespace context.
-       (pushdecl_top_level_and_finish): Likewise.
-       * pt.c (get_template_parm_object): Clear decl context before
-       pushing.
-       * semantics.c (finish_compound_literal): Likewise.
-
-2020-10-01  Nathan Sidwell  <nathan@acm.org>
-
-       * decl.c (lookup_and_check_tag): Refactor.
-
-2020-10-01  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/96994
-       * call.c (build_over_call): If obj_arg is non-NULL, return INIT_EXPR
-       setting obj_arg to call.
-
-2020-10-01  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/97195
-       * constexpr.c (cxx_eval_call_expression): Don't VERIFY_CONSTANT the
-       second argument.
-
-2020-10-01  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/90210
-       * pt.c (do_class_deduction): Don't prune explicit deduction guides
-       in copy-list-initialization.  In copy-list-initialization, if an
-       explicit deduction guide was selected, give an error.
-
-2020-09-30  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (struct lang_decl_fn): Remove hidden_friend_p.
-       (DECL_HIDDEN_FRIEND_P): Delete.
-       * call.c (add_function_candidate): Drop assert about anticipated
-       decl.
-       (build_new_op_1): Drop koenig lookup flagging for hidden friend.
-       * decl.c (duplicate_decls): Drop HIDDEN_FRIEND_P updating.
-       * name-lookup.c (do_pushdecl): Likewise.
-       (set_decl_namespace): Discover hiddenness from OVL_HIDDEN_P.
-       * pt.c (check_explicit_specialization): Record found_hidden
-       explicitly.
-
-2020-09-29  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94695
-       * call.c (ref_conv_binds_directly_p): New function.
-       * cp-tree.h (ref_conv_binds_directly_p): Declare.
-       * parser.c (warn_for_range_copy): New function.
-       (cp_convert_range_for): Call it.
-
-2020-09-29  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (ovl_insert): Change final parm to hidden-or-using
-       indicator.
-       * name-lookup.h (HIDDEN_TYPE_BINDING_P): New.
-       (struct cxx_binding): Add type_is_hidden flag.
-       * tree.c (ovl_insert): Change using_p parm to using_or_hidden,
-       adjust.
-       (ovl_skip_hidden): Assert we never see a naked hidden decl.
-       * decl.c (xref_tag_1): Delete unhiding friend from here (moved to
-       lookup_elaborated_type_1).
-       * name-lookup.c (STAT_TYPE_HIDDEN_P, STAT_DECL_HIDDEN_P): New.
-       (name_lookup::search_namespace_only): Check new hidden markers.
-       (cxx_binding_make): Clear HIDDEN_TYPE_BINDING_P.
-       (update_binding): Update new hidden markers.
-       (lookup_name_1): Check HIDDEN_TYPE_BINDING_P and simplify friend
-       ignoring.
-       (lookup_elaborated_type_1): Use new hidden markers.  Reveal the
-       decl here.
-
-2020-09-29  Nathan Sidwell  <nathan@acm.org>
-
-       * name-lookup.c (create_local_binding): Do not clear
-       INHERITED_VALUE_BINDING_P here.
-       (name_lookup::process_binding): Move done hidden-decl triage to ...
-       (name_lookup::search_namespace_only): ... here, its only caller.
-       (cxx_binding_make): Clear flags here.
-       (push_binding): Not here.
-       (pop_local_binding): RAII.
-       (update_binding): Refactor.
-       (do_pushdecl): Assert we're never revealing a local binding.
-       (do_pushdecl_with_scope): Directly call do_pushdecl.
-       (get_class_binding): Do not clear LOCAL_BINDING_P here.
-       * pt.c (push_template_decl): Set friend & anticipated before
-       pushing.
-
-2020-09-29  Nathan Sidwell  <nathan@acm.org>
-
-       * name-lookup.c (update_binding): We never meet two implicit
+2021-01-11  Jakub Jelinek  <jakub@redhat.com>
+
+       PR c++/98481
+       * class.c (find_abi_tags_r): Set *walk_subtrees to 2 instead of 1
+       for types.
+       (mark_abi_tags_r): Likewise.
+       * decl2.c (min_vis_r): Likewise.
+       * tree.c (cp_walk_subtrees): If *walk_subtrees_p is 2, look through
        typedefs.
-       (do_pushdecl): Adjust set_identifier_type_value_with_scope calls.
-       (set_identifier_type_value_with_scope): Do not update binding in
-       the namespace-case.  Assert it is already there.
-
-2020-09-25  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (duplicate_decls): Replace 'is_friend' with 'hiding'
-       and add 'was_hidden'.
-       * name-lookup.h (pushdecl_namespace_level): Replace 'is_friend'
-       with 'hiding'.
-       (pushdecl): Likewise.
-       (pushdecl_top_level): Drop is_friend parm.
-       * decl.c (check_no_redeclaration_friend_default_args): Rename parm
-       olddelc_hidden_p.
-       (duplicate_decls): Replace 'is_friend' with 'hiding'
-       and 'was_hidden'.  Do minimal adjustments in body.
-       (cxx_builtin_function): Pass 'hiding' to pushdecl.
-       * friend.c (do_friend): Pass 'hiding' to pushdecl.
-       * name-lookup.c (supplement_binding_1): Drop defaulted arg to
-       duplicate_decls.
-       (update_binding): Replace 'is_friend' with 'hiding'.  Drop
-       defaulted arg to duplicate_decls.
-       (do_pushdecl): Replace 'is_friend' with 'hiding'.  Assert no
-       surprise hidhing.  Adjust duplicate_decls calls to inform of old
-       decl's hiddennes.
-       (pushdecl): Replace 'is_friend' with 'hiding'.
-       (set_identifier_type_value_with_scope): Adjust update_binding
-       call.
-       (do_pushdecl_with_scope): Replace 'is_friend' with 'hiding'.
-       (pushdecl_outermost_localscope): Drop default arg to
-       do_pushdecl_with_scope.
-       (pushdecl_namespace_level): Replace 'is_friend' with 'hiding'.
-       (pushdecl_top_level): Drop is_friend parm.
-       * pt.c (register_specialization): Comment duplicate_decls call
-       args.
-       (push_template_decl): Commont pushdecl_namespace_level.
-       (tsubst_friend_function, tsubst_friend_class): Likewise.
-
-2020-09-25  Nathan Sidwell  <nathan@acm.org>
-
-       * name-lookup.h (enum tag_scope): Replace with ...
-       (enum class TAG_how): ... this.  Add HIDDEN_FRIEND value.
-       (lookup_type_scope): Replace with ...
-       (lookup_elaborated_type): ... this.
-       (pushtag): Use TAG_how, not tag_scope.
-       * cp-tree.h (xref_tag): Parameter is TAG_how, not tag_scope.
-       * decl.c (lookup_and_check_tag): Likewise.  Adjust.
-       (xref_tag_1, xref_tag): Likewise. adjust.
-       (start_enum): Adjust lookup_and_check_tag call.
-       * name-lookup.c (lookup_type_scope_1): Rename to ...
-       (lookup_elaborated_type_1) ... here. Use TAG_how, not tag_scope.
-       (lookup_type_scope): Rename to ...
-       (lookup_elaborated_type): ... here.  Use TAG_how, not tag_scope.
-       (do_pushtag): Use TAG_how, not tag_scope.  Adjust.
-       (pushtag): Likewise.
-       * parser.c (cp_parser_elaborated_type_specifier): Adjust.
-       (cp_parser_class_head): Likewise.
-
-2020-09-25  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (DECL_BUILTIN_P): New.
-       * decl.c (duplicate_decls): Use it.  Do not treat omp-udr as a
-       builtin.
-       * name-lookup.c (anticipated_builtin): Use it.
-       (set_decl_context_in_fn): Function-scope OMP UDRs have function context.
-       (do_nonmember_using_decl): Use DECL_BUILTIN_P.
-       * parser.c (cp_parser_omp_declare_reduction): Function-scope OMP
-       UDRs have function context.  Assert we never find a valid duplicate.
-       * pt.c (tsubst_expr): Function-scope OMP UDRs have function context.
-
-2020-09-24  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (duplicate_decls): Default is_friend to false.
-       (xref_tag): Default tag_scope & tpl_header_p to ts_current & false.
-       (push_template_decl_real): Default is_friend to false.  Rename to
-       ...
-       (push_template_decl): ... here.  Delete original decl.
-       * name-lookup.h (pushdecl_namespace_level): Default is_friend to
-       false.
-       (pushtag): Default tag_scope to ts_current.
-       * coroutines.cc (morph_fn_to_coro): Drop default args to xref_tag.
-       * decl.c (start_decl): Drop default args to duplicate_decls.
-       (start_enum): Drop default arg to pushtag & xref_tag.
-       (start_preparsed_function): Pass DECL_FRIEND_P to
-       push_template_decl.
-       (grokmethod): Likewise.
-       * friend.c (do_friend): Rename push_template_decl_real calls.
-       * lambda.c (begin_lamnbda_type): Drop default args to xref_tag.
-       (vla_capture_type): Likewise.
-       * name-lookup.c (maybe_process_template_type_declaration): Rename
-       push_template_decl_real call.
-       (pushdecl_top_level_and_finish): Drop default arg to
-       pushdecl_namespace_level.
-       * pt.c (push_template_decl_real): Assert no surprising friend
-       functions.  Rename to ...
-       (push_template_decl): ... here.  Delete original function.
-       (lookup_template_class_1): Drop default args from pushtag.
-       (instantiate_class_template_1): Likewise.
-       * ptree.c (debug_overload): Print hidden and using markers.
-       * rtti.c (init_rtti_processing): Drop refault args from xref_tag.
-       (build_dynamic_cast_1, tinfo_base_init): Likewise.
-       * semantics.c (begin_class_definition): Drop default args to
-       pushtag.
-
-2020-09-24  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/97186
-       * pt.c (maybe_instantiate_noexcept): Local externs are never
-       member fns.
-
-2020-09-23  Nathan Sidwell  <nathan@acm.org>
-
-       * name-lookup.h (typedef cxx_binding): Delete tdef.
-       (typedef cp_binding_level): Likewise.
-       (struct cxx_binding): Flags are bools.
-
-2020-09-23  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/97171
-       * pt.c (tsubst_copy) [FUNCTION_DECL,VAR_DECL]: Retrieve local
-       specialization for DECL_LOCAL_P decls.
-
-2020-09-22  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/95310
-       * pt.c (corresponding_template_parameter): Define.
-       (keep_template_parm): Use it to adjust the given template
-       parameter to the corresponding in-scope one from ctx_parms.
-
-2020-09-22  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (xref_tag_from_type): Don't declare.
-       * decl.c (xref_tag_from_type): Delete.
-       * pt.c (lookup_template_class_1): Erroneously located class
-       definitions just give error_mark, don't try and inject it into the
-       namespace.
-
-2020-09-22  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/97145
-       * constexpr.c (cxx_eval_builtin_function_call): Return void_node for
-       calls to __sanitize_ptr_{sub,cmp} builtins.
-
-2020-09-22  Nathan Sidwell  <nathan@acm.org>
-
-       * pt.c (instantiate_class_template_1): Do not repush and unhide
-       injected friend.
-
-2020-09-21  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/90583
-       DR 1722
-       * lambda.c (maybe_add_lambda_conv_op): Mark the conversion function
-       as noexcept.
-
-2020-09-21  Marek Polacek  <polacek@redhat.com>
-
-       * pt.c (deduction_guides_for): Add a bool parameter.  Set it.
-       (do_class_deduction): Warn when CTAD succeeds but the type doesn't
-       have any explicit deduction guides.
-
-2020-09-21  Nathan Sidwell  <nathan@acm.org>
-
-       * decl.c (xref_tag_1): Use IDENTIFIER_LAMBDA_P to detect lambdas.
-       * lambda.c (begin_lambda_type): Use ts_current to push the tag.
-       * name-lookup.h (enum tag_scope): Drop ts_lambda.
-
-2020-09-21  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/97099
-       * decl.c (redeclaration_error_message): Detect a redeclaration of
-       deduction guides.
-
-2020-09-19  Sandra Loosemore  <sandra@codesourcery.com>
-
-       * cp-gimplify.c (enum bc_t, bc_label): Move to c-family.
-       (begin_bc_block, finish_bc_block, get_bc_label): Likewise.
-       (genericize_cp_loop): Likewise.
-       (genericize_for_stmt, genericize_while_stmt): Likewise.
-       (genericize_do_stmt, genericize_switch_stmt): Likewise.
-       (genericize_continue_stmt, genericize_break_stmt): Likewise.
-       (genericize_omp_for_stmt): Likewise.
-       (cp_genericize_r): Call c_genericize_control_stmt instead of
-       above functions directly.
-       (cp_genericize): Call save_bc_state and restore_bc_state instead
-       of manipulating bc_label directly.
-       * cp-objcp-common.c (cxx_block_may_fallthru): Defer to
-       c_block_may_fallthru instead of handling SWITCH_STMT here.
-       (cp_common_init_ts): Move handling of loop and switch-related
-       statements to c-family.
-       * cp-tree.def (FOR_STMT, WHILE_STMT, DO_STMT): Move to c-family.
-       (BREAK_STMT, CONTINUE_STMT, SWITCH_STMT): Likewise.
-       * cp-tree.h (LABEL_DECL_BREAK, LABEL_DECL_CONTINUE): Likewise.
-       (WHILE_COND, WHILE_BODY): Likewise.
-       (DO_COND, DO_BODY): Likewise.
-       (FOR_INIT_STMT, FOR_COND, FOR_EXPR, FOR_BODY, FOR_SCOPE): Likewise.
-       (SWITCH_STMT_COND, SWITCH_STMT_BODY): Likewise.
-       (SWITCH_STMT_TYPE, SWITCH_STMT_SCOPE): Likewise.
-       (SWITCH_STMT_ALL_CASES_P, SWITCH_STMT_NO_BREAK_P): Likewise.
-       * cxx-pretty-print.c (cxx_pretty_printer::statement): Move code
-       to handle structured loop and switch tree nodes to c-family.
-       * dump.c (cp_dump_tree): Likewise.
-
-2020-09-19  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/96531
-       PR c++/97103
-       * constraint.cc (map_arguments): Call template_parm_to_arg
-       in the self-mapping case.
-       (finish_shorthand_constraint): No need to build a TREE_LIST
-       before calling template_parm_to_arg.
-       * pt.c (template_parm_to_arg): Rewrite to handle TEMPLATE_PARM_P
-       nodes as well as DECL_TEMPLATE_PARM_P nodes, and to make the
-       overlying TREE_LIST node optional.
-       (keep_template_parm): Don't record a BOUND_TEMPLATE_TEMPLATE_PARM,
-       instead record its corresponding TEMPLATE_TEMPLATE_PARM.
-       (convert_generic_types_to_packs): Don't call
-       template_parm_to_arg.
-
-2020-09-19  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/97051
-       * constraint.cc (satisfy_atom): Pass true as the
-       manifestly_const_eval argument to maybe_constant_value.
-
-2020-09-18  Jason Merrill  <jason@redhat.com>
-
-       PR bootstrap/97118
-       * decl.c (complete_vars): Only call layout_var_decl if completing
-       the type succeeded.
-
-2020-09-18  Jason Merrill  <jason@redhat.com>
-
-       * decl.c (complete_vars): Call layout_var_decl.
-
-2020-09-17  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/96409
-       PR c++/96410
-       * constraint.cc (tsubst_requires_expr): Use REQUIRES_EXPR_PARMS
-       and REQUIRES_EXPR_REQS.  Use REQUIRES_EXPR_EXTRA_ARGS,
-       add_extra_args and build_extra_args to defer substitution until
-       we have all the template arguments.
-       (finish_requires_expr): Adjust the call to build_min so that
-       REQUIRES_EXPR_EXTRA_ARGS gets set to NULL_TREE.
-       * cp-tree.def (REQUIRES_EXPR): Give it a third operand.
-       * cp-tree.h (REQUIRES_EXPR_PARMS, REQUIRES_EXPR_REQS,
-       REQUIRES_EXPR_EXTRA_ARGS): Define.
-       (add_extra_args, build_extra_args): Declare.
-
-2020-09-16  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (cp_check_omp_declare_reduction): Return bool.
-       * semantics.c (cp_check_omp_declare_reduction): Return true on for
-       success.
-       * pt.c (push_template_decl_real): OMP reductions do not get a
-       template header.
-       (tsubst_function_decl): Remove special casing for local decl omp
-       reductions.
-       (tsubst_expr): Call instantiate_body for a local omp reduction.
-       (instantiate_body): Add nested_p parm, and deal with such
-       instantiations.
-       (instantiate_decl): Reject FUNCTION_SCOPE entities, adjust
-       instantiate_body call.
-
-2020-09-16  Nathan Sidwell  <nathan@acm.org>
-
-       * pt.c (instantiate_body): Remove 'nested' var, simplify
-       push_to_top logic.
-
-2020-09-16  Nathan Sidwell  <nathan@acm.org>
-
-       * pt.c (instantiate_body): New, broken out of ..
-       (instantiate_decl): ... here.  Call it.
-
-2020-09-15  Nathan Sidwell  <nathan@acm.org>
-
-       * pt.c (push_template_decl_real): OMP reductions retain a template
-       header.
-       (tsubst_function_decl): Likewise.
-
-2020-09-15  Tobias Burnus  <tobias@codesourcery.com>
-
-       PR fortran/96668
-       * cp-gimplify.c (cxx_omp_finish_clause): Add bool openacc arg.
-       * cp-tree.h (cxx_omp_finish_clause): Likewise
-       * semantics.c (handle_omp_for_class_iterator): Update call.
-
-2020-09-14  Marek Polacek  <polacek@redhat.com>
-
-       * pt.c (push_template_decl_real): Use VAR_OR_FUNCTION_DECL_P.
-
-2020-09-14  Nathan Sidwell  <nathan@acm.org>
-
-       * pt.c (push_template_decl_real): Don't attach a template head to
-       local externs.
-       (tsubst_function_decl): Add support for headless local extern
-       decls.
-       (tsubst_decl): Add support for headless local extern decls.
-
-2020-09-11  Nathan Sidwell  <nathan@acm.org>
-
-       * decl.c (grokfndecl): Don't attach to local extern.
-
-2020-09-11  Nathan Sidwell  <nathan@acm.org>
-
-       * parser.c (cp_parser_objc_method_definition_list): Reimplement
-       loop, make sure we pop scope.
-
-2020-09-11  Marek Polacek  <polacek@redhat.com>
-
-       * cp-tree.h (LOOKUP_CONSTINIT): Remove.
-       (LOOKUP_REWRITTEN): Adjust.
-       * decl.c (duplicate_decls): Set DECL_DECLARED_CONSTINIT_P.
-       (check_initializer): Use DECL_DECLARED_CONSTINIT_P instead of
-       LOOKUP_CONSTINIT.
-       (cp_finish_decl): Don't set DECL_DECLARED_CONSTINIT_P.  Use
-       DECL_DECLARED_CONSTINIT_P instead of LOOKUP_CONSTINIT.
-       (grokdeclarator): Set DECL_DECLARED_CONSTINIT_P.
-       * decl2.c (grokfield): Don't handle LOOKUP_CONSTINIT.
-       * parser.c (cp_parser_decomposition_declaration): Remove
-       LOOKUP_CONSTINIT handling.
-       (cp_parser_init_declarator): Likewise.
-       * pt.c (tsubst_expr): Likewise.
-       (instantiate_decl): Likewise.
-       * typeck2.c (store_init_value): Use DECL_DECLARED_CONSTINIT_P instead
-       of LOOKUP_CONSTINIT.
-
-2020-09-10  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (TINFO_VAR_DECLARED_CONSTINIT): Replace with ...
-       (DECL_DECLARED_CONSTINIT_P): ... this.
-       * decl.c (start_decl): No need to retrofit_lang_decl for constinit
-       flag.
-       (cp_finish_decl): Use DECL_DECLARED_CONSTINIT_P.
-       * pt.c (tsubst_decl): No need to handle constinit flag
-       propagation.
-       (tsubst_expr): Or here.
-
-2020-09-10  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (DECL_LOCAL_FUNCTION_P): Rename to ...
-       (DECL_LOCAL_DECL_P): ... here.  Accept both fns and vars.
-       * decl.c (start_decl): Set DECL_LOCAL_DECL_P for local externs.
-       (omp_declare_variant_finalize_one): Use DECL_LOCAL_DECL_P.
-       (local_variable_p): Simplify.
-       * name-lookup.c (set_decl_context_in_fn): Assert DECL_LOCAL_DECL_P
-       is as expected.  Simplify.
-       (do_pushdecl): Don't set decl_context_in_fn for friends.
-       (is_local_extern): Simplify.
-       * call.c (equal_functions): Use DECL_LOCAL_DECL_P.
-       * parser.c (cp_parser_postfix_expression): Likewise.
-       (cp_parser_omp_declare_reduction): Likewise.
-       * pt.c (check_default_tmpl_args): Likewise.
-       (tsubst_expr): Assert nested reduction function is local.
-       (type_dependent_expression_p): Use DECL_LOCAL_DECL_P.
-       * semantics.c (finish_call_expr): Likewise.
-
-2020-09-09  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/77841
-       * decl.c (reshape_init): If we're initializing a char array from
-       a string-literal that is enclosed in braces, unwrap it.
-       * init.c (build_new_1): Don't handle string-initializers here.
-       (build_new): Handle new-expression with paren-init when the
-       array bound is known.  Always pass string constants to build_new_1
-       enclosed in braces.  Don't handle string-initializers in any
-       special way.
-
-2020-09-09  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/95164
-       * decl.c (reshape_init_r): When initializing an aggregate member
-       with an initializer from an initializer-list, also consider
-       COMPOUND_LITERAL_P.
-
-2020-09-09  Nathan Sidwell  <nathan@acm.org>
-
-       * parser.c (cp_parser_omp_declare_reduction): Refactor to avoid
-       code duplication.  Update DECL_TI_TEMPLATE's context.
-       * pt.c (tsubst_expr): For OMP reduction function, set context to
-       global_namespace before pushing.
-       (tsubst_omp_udr): Assert current_function_decl, add comment about
-       decl context.
-
-2020-09-09  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/96647
-       * class.c (resolve_address_of_overloaded_function): Check
-       constraints_satisfied_p and perform return-type deduction via
-       maybe_instantiate_decl when considering non-template functions
-       in the overload set.
-       * cp-tree.h (maybe_instantiate_decl): Declare.
-       * decl2.c (maybe_instantiate_decl): Remove static.
-
-2020-09-04  Jason Merrill  <jason@redhat.com>
-
-       * expr.c (mark_use): Use iloc_sentinel.
-
-2020-09-03  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/96901
-       * constexpr.c (fundef_copies_table): Change type from
-       hash_map<tree, tree> * to decl_tree_map *.
-
-2020-09-03  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/92812
-       * cp-tree.h (do_aggregate_paren_init): Declare.
-       * decl.c (do_aggregate_paren_init): New.
-       (grok_reference_init): Use it.
-       (check_initializer): Likewise.
-       * init.c (perform_member_init): Handle initializing an array from
-       a ()-list.  Use do_aggregate_paren_init.
 
-2020-09-03  Jakub Jelinek  <jakub@redhat.com>
+2021-01-08  Patrick Palka  <ppalka@redhat.com>
 
-       PR c++/96862
-       * constexpr.c (cxx_eval_outermost_constant_expr): Temporarily disable
-       flag_rounding_math during manifestly constant evaluation.
+       PR c++/98551
+       * constexpr.c (cxx_eval_call_expression): Check CLASS_TYPE_P
+       instead of AGGREGATE_TYPE_P before calling replace_result_decl.
 
-2020-09-01  Marek Polacek  <polacek@redhat.com>
+2021-01-08  Patrick Palka  <ppalka@redhat.com>
 
-       PR c++/77841
-       * init.c (build_new_1): Call reshape_init.
+       PR c++/98515
+       * semantics.c (check_accessibility_of_qualified_id): Punt if
+       we're checking access of a scoped non-static member inside a
+       class template.
 
-2020-09-01  Jakub Jelinek  <jakub@redhat.com>
+2021-01-07  Jakub Jelinek  <jakub@redhat.com>
 
-       PR c++/96867
-       * semantics.c (handle_omp_array_sections_1): Test
-       DECL_ARRAY_PARAMETER_P only on PARM_DECLs.
+       PR c++/98329
+       * pt.c (tsubst_copy) <case BIT_CAST_EXPR>: Don't call
+       cp_build_bit_cast here, instead just build_min a BIT_CAST_EXPR and set
+       its location.
+       (tsubst_copy_and_build): Handle BIT_CAST_EXPR.
 
-2020-08-31  Marek Polacek  <polacek@redhat.com>
-           Jason Merrill  <jason@redhat.com>
+2021-01-07  Marek Polacek  <polacek@redhat.com>
 
-       PR c++/93529
-       * call.c (build_new_method_call_1): Use build_constructor_from_vec
-       instead of build_tree_list_vec + build_constructor_from_list.
-       * init.c (build_new_1): Handle new char[]{"foo"}.  Use
-       build_constructor_from_vec instead of build_tree_list_vec +
-       build_constructor_from_list.
-       (build_new): Deduce the array size in new-expression if not
-       present.  Handle ()-init.  Handle initializing an array from
-       a string literal.
-       * parser.c (cp_parser_new_type_id): Leave [] alone.
-       (cp_parser_direct_new_declarator): Allow [].
-       * pt.c (type_dependent_expression_p): In a NEW_EXPR, consider
-       array types whose dimension has to be deduced type-dependent.
+       PR c++/98441
+       * decl.c (grokdeclarator): Move the !funcdecl_p check inside the
+       !late_return_type block.
 
-2020-08-27  Martin Liska  <mliska@suse.cz>
+2021-01-07  Jason Merrill  <jason@redhat.com>
 
-       * class.c (build_vtbl_initializer): Set exact argument of a vector
-       growth function to true.
-       * constraint.cc (get_mapped_args): Likewise.
-       * decl.c (cp_maybe_mangle_decomp): Likewise.
-       (cp_finish_decomp): Likewise.
-       * parser.c (cp_parser_omp_for_loop): Likewise.
-       * pt.c (canonical_type_parameter): Likewise.
-       * rtti.c (get_pseudo_ti_init): Likewise.
+       * constexpr.c (cxx_bind_parameters_in_call): Add comment.
+       (cxx_eval_store_expression): Add comment.
 
-2020-08-26  Nathan Sidwell  <nathan@acm.org>
+2021-01-07  Jason Merrill  <jason@redhat.com>
 
-       * decl.c (poplevel): A local-binding tree list holds the name in
-       TREE_PURPOSE.
-       * name-lookup.c (update_local_overload): Add id to TREE_PURPOSE.
-       (lookup_name_1): Deal with local-binding error_mark_node marker.
-       (op_unqualified_lookup): Return error_mark_node for 'nothing
-       found'.  Retain global binding, check class binding here.
-       (maybe_save_operator_binding): Reimplement to always cache a
-       result.
-       (push_operator_bindings): Deal with 'ignore' marker.
+       * call.c (has_next): Factor out from...
+       (next_conversion): ...here.
+       (strip_standard_conversion): And here.
+       (is_subseq): And here.
+       (build_conv): Check it.
+       (standard_conversion): Don't call build_conv
+       for ck_identity.
 
-2020-08-25  Tobias Burnus  <tobias@codesourcery.com>
+2021-01-06  Martin Sebor  <msebor@redhat.com>
 
-       PR c/96678
-       * semantics.c (handle_omp_array_sections_1): Talk about
-       array function parameter in the error message.
+       PR c++/95768
+       * error.c (dump_expr): Call c_pretty_printer::unary_expression.
 
-2020-08-25  Jakub Jelinek  <jakub@redhat.com>
+2021-01-05  Patrick Palka  <ppalka@redhat.com>
 
-       PR c++/96721
-       * cp-tree.h (build_trivial_dtor_call): Add bool argument defaulted
-       to false.
-       * call.c (build_trivial_dtor_call): Add NO_PTR_DEREF argument.  If
-       instance is a pointer and NO_PTR_DEREF is true, clobber the pointer
-       rather than what it points to.
-       * semantics.c (finish_call_expr): Call build_trivial_dtor_call with
-       true as NO_PTR_DEREF.
+       * pt.c (unify) <case TEMPLATE_PARM_INDEX>: After walking into
+       the type of the NTTP, substitute into the type again.  If the
+       type is still dependent, don't unify the NTTP.
 
-2020-08-25  Jason Merrill  <jason@redhat.com>
+2021-01-05  Jakub Jelinek  <jakub@redhat.com>
 
-       PR c++/95428
-       * optimize.c (populate_clone_array): Revert PR70462 change.
-       (maybe_clone_body): Likewise.
+       * Make-lang.in (cc1plus-checksum, cc1plus$(exeext): Add
+       $(CODYLIB) after $(BACKEND).
 
-2020-08-24  Nathan Sidwell  <nathan@acm.org>
+2021-01-05  Jakub Jelinek  <jakub@redhat.com>
 
-       * ptree.c (debug_overload): New.
+       PR c++/98469
+       * constexpr.c (cxx_eval_constant_expression) <case BIT_CAST_EXPR>:
+       Punt if lval is true.
+       * semantics.c (cp_build_bit_cast): Call get_target_expr_sfinae on
+       the result if it has a class type.
 
-2020-08-19  Jason Merrill  <jason@redhat.com>
+2021-01-05  Marek Polacek  <polacek@redhat.com>
 
-       DR 2369
-       * cp-tree.h (push_tinst_level, push_tinst_level_loc): Declare.
-       * constraint.cc (satisfy_declaration_constraints):
-       Use add_outermost_template_args and push_tinst_level.
-       * pt.c (add_outermost_template_args): Handle getting
-       a TEMPLATE_DECL as the first argument.
-       (push_tinst_level, push_tinst_level_loc): No longer static.
-       (fn_type_unification): Check satisfaction before non-dependent
-       conversions.
-
-2020-08-18  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (SET_TYPE_TEMPLTE_INFO): Do not deal with ALIAS templates.
-       * pt.c (lookup_template_class_1): Special-case alias template
-       template_info setting.
-
-2020-08-18  Jason Merrill  <jason@redhat.com>
-
-       PR c++/96199
-       * pt.c (tsubst_aggr_type): Rewrite in C++17, too.
-       (maybe_dependent_member_ref): Likewise.
-       (build_deduction_guide): Re-substitute template parms.
-       * cp-tree.h (struct push_nested_class_guard): New.
-       * constraint.cc (get_normalized_constraints_from_decl): Use it.
-
-2020-08-18  Jason Merrill  <jason@redhat.com>
-
-       PR c++/96199
-       * pt.c (maybe_dependent_member_ref): New.
-       (tsubst_copy) [CONST_DECL]: Use it.
-       [VAR_DECL]: Likewise.
-       (tsubst_aggr_type): Handle nested type.
-
-2020-08-18  Nathan Sidwell  <nathan@acm.org>
-
-       * name-lookup.c (qualify_lookup): Drop lambda checking here.
-       Reorder namespace & type checking.
-       (lookup_name_1): Do hidden lambda checking here.
-
-2020-08-14  Nathan Sidwell  <nathan@acm.org>
-
-       * name-lookup.h (lookup_name_real, lookup_name_nonclass): Rename
-       to ...
-       (lookup_name): ... these new overloads.
-       * name-lookup.c (identifier_type_value_1): Rename lookup_name_real
-       call.
-       (lookup_name_real_1): Rename to ...
-       (lookup_name_1): ... here.
-       (lookup_name_real): Rename to ...
-       (lookup_name): ... here.  Rename lookup_name_real_1 call.
-       (lookup_name_nonclass): Delete.
-       * call.c (build_operator_new_call): Rename lookup_name_real call.
-       (add_operator_candidates): Likewise.
-       (build_op_delete_call): Rename lookup_name_nonclass call.
-       * parser.c (cp_parser_lookup_name): Likewise.
-       * pt.c (tsubst_friend_class, lookup_init_capture_pack): Likewise.
-       (tsubst_expr): Likewise.
-       * semantics.c (capture_decltype): Likewise.
-
-2020-08-14  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (LOOKUP_HIDDEN): Delete.
-       (LOOKUP_PREFER_RVALUE): Adjust initializer.
-       * name-lookup.h (enum class LOOK_want): Add HIDDEN_FRIEND and
-       HIDDEN_LAMBDA flags.
-       (lookup_name_real): Drop flags parm.
-       (lookup_qualified_name): Drop find_hidden parm.
-       * name-lookup.c (class name_lookup): Drop hidden field, adjust
-       ctors.
-       (name_lookup::add_overload): Check want for hiddenness.
-       (name_lookup::process_binding): Likewise.
-       (name_lookup::search_unqualified): Likewise.
-       (identifier_type_value_1): Adjust lookup_name_real call.
-       (set_decl_namespace): Adjust name_lookup ctor.
-       (qualify_lookup): Drop flags parm, use want for hiddenness.
-       (lookup_qualified_name): Drop find_hidden parm.
-       (lookup_name_real_1): Drop flags parm, adjust qualify_lookup
-       calls.
-       (lookup_name_real): Drop flags parm.
-       (lookup_name_nonclass, lookup_name): Adjust lookup_name_real
-       calls.
-       (lookup_type_scope_1): Adjust qualify_lookup calls.
-       * call.c (build_operator_new_call): Adjust lookup_name_real call.
-       (add_operator_candidates): Likewise.
-       * coroutines.cc (morph_fn_to_coro): Adjust lookup_qualified_name
-       call.
-       * parser.c (cp_parser_lookup_name): Adjust lookup_name_real calls.
-       * pt.c (check_explicit_specialization): Adjust
-       lookup_qualified_name call.
-       (deduction_guides_for): Likewise.
-       (tsubst_friend_class): Adjust lookup_name_real call.
-       (lookup_init_capture_pack): Likewise.
-       (tsubst_expr): Likewise, don't look in namespaces.
-       * semantics.c (capture_decltype): Adjust lookup_name_real.  Don't
-       look in namespaces.
-
-2020-08-14  Jason Merrill  <jason@redhat.com>
-
-       PR c++/90254
-       PR c++/93711
-       * cp-tree.h (unsafe_return_slot_p): Declare.
-       * call.c (is_base_field_ref): Rename to unsafe_return_slot_p.
-       (build_over_call): Check unsafe_return_slot_p.
-       (build_special_member_call): Likewise.
-       * init.c (expand_default_init): Likewise.
-       * typeck2.c (split_nonconstant_init_1): Likewise.
-
-2020-08-14  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (LOOKUP_PREFER_TYPES, LOOKUP_PREFER_NAMESPACES)
-       (LOOKUP_NAMESPACES_ONLY, LOOKUP_TYPES_ONLY)
-       (LOOKUP_QUALIFIERS_ONL): Delete.
-       (LOOKUP_HIDDEN): Adjust.
-       * name-lookup.h (enum class LOOK_want): New.
-       (operator|, operator&): Overloads for it.
-       (lookup_name_real): Replace prefer_type & namespaces_only with
-       LOOK_want parm.
-       (lookup_qualified_name): Replace prefer_type with LOOK_want.
-       (lookup_name_prefer_type): Replace with ...
-       (lookup_name): ... this.  New overload with LOOK_want parm.
-       * name-lookup.c (struct name_lookup): Replace flags with want and
-       hidden fields.  Adjust constructors.
-       (name_lookyp::add_overload): Correct hidden stripping test.  Update
-       for new LOOK_want type.
-       (name_lookup::process_binding): Likewise.
-       (name_lookup::search_unqualified): Use hidden flag.
-       (identifier_type_value_1): Adjust lookup_name_real call.
-       (set_decl_namespace): Adjust name_lookup ctor.
-       (lookup_flags): Delete.
-       (qualify_lookup): Add LOOK_want parm, adjust.
-       (lookup_qualified_name): Replace prefer_type parm with LOOK_want.
-       (lookup_name_real_1): Replace prefer_type and namespaces_only with
-       LOOK_want parm.
-       (lookup_name_real): Likewise.
-       (lookup_name_nonclass, lookup_name): Adjust lookup_name_real call.
-       (lookup_name_prefer_type): Rename to ...
-       (lookup_name): ... here.  New overload with LOOK_want parm.
-       (lookup_type_scope_1): Adjust qualify_lookup calls.
-       * call.c (build_operator_new_call)
-       (add_operator_candidates): Adjust lookup_name_real calls.
-       * coroutines.cc (find_coro_traits_template_decl)
-       (find_coro_handle_template_decl, morph_fn_to_coro): Adjust
-       lookup_qualified_name calls.
-       * cp-objcp-common.c (identifier_global_tag): Likewise.
-       * decl.c (get_tuple_size, get_tuple_decomp_init): Likewise.
-       (lookup_and_check_tag): Use lookup_name overload.
-       * parser.c (cp_parser_userdef_numeric_literal): Adjust
-       lookup_qualified_name call.
-       (prefer_arg_type): Drop template_mem_access parm, return LOOK_want
-       value.
-       (cp_parser_lookup_name): Adjust lookup_member, lookup_name_real
-       calls.
-       * pt.c (check_explicit_specialization): Adjust lookup_qualified_name
-       call.
-       (tsubst_copy_and_build, tsubst_qualified_name): Likewise
-       (deduction_guides_for): Likewise.
-       (tsubst_friend_class): Adjust lookup_name_real call.
-       (lookup_init_capture, tsubst_expr): Likewise.
-       * rtti.c (emit_support_tinfos): Adjust lookup_qualified_name call.
-       * semantics.c (omp_reduction_lookup): Likewise.
-       (capture_decltype): Adjust lookup_name_real call.
-
-2020-08-13  Nathan Sidwell  <nathan@acm.org>
-
-       * name-lookup.h (enum class LOOK_where): New.
-       (operator|, operator&): Overloads for it.
-       (lookup_name_real): Replace NONCLASS & BLOCK_P parms with WHERE.
-       * name-lookup.c (identifier_type_value_w): Adjust
-       lookup_name_real call.
-       (lookup_name_real_1): Replace NONCLASS and BLOCK_P parameters
-       with WHERE bitmask. Don't search namespaces if not asked to.
-       (lookup_name_real): Adjust lookup_name_real_1 call.
-       (lookup_name_nonclass, lookup_name)
-       (lookup_name_prefer_type): Likewise.
-       * call.c (build_operator_new_call)
-       (add_operator_candidates): Adjust lookup_name_real calls.
-       * parser.c (cp_parser_lookup_name): Likewise.
-       * pt.c (tsubst_friend_class, lookup_init_capture_pack)
-       (tsubst_expr): Likewise.
-       * semantics.c (capture_decltype): Likewise.
-
-2020-08-13  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/92812
-       * typeck.c (build_static_cast_1): Implement P1975R0 by allowing
-       static_cast to aggregate type.
-
-2020-08-10  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/96497
-       * constexpr.c (cxx_eval_binary_expression): For SPACESHIP_EXPR, tail
-       call cxx_eval_constant_expression after genericize_spaceship to avoid
-       undesirable further VERIFY_CONSTANT.
-
-2020-08-10  Patrick Palka  <ppalka@redhat.com>
-
-       * pt.c (resolve_overloaded_unification): Drop functions with
-       unsatisfied constraints.
-       (resolve_nondeduced_context): Likewise.
-
-2020-08-05  Patrick Palka  <ppalka@redhat.com>
-           Jason Merrill  <jason@redhat.com>
-
-       PR c++/96282
-       * constexpr.c (cxx_eval_vec_init_1): Truncate ctx->ctor and
-       then clear CONSTRUCTOR_NO_CLEARING on each appended element
-       initializer if we're initializing a previously zero-initialized
-       array object.
-
-2020-08-04  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/96082
-       * parser.c (cp_parser_elaborated_type_specifier): Allow
-       'template' following ::.
-
-2020-08-04  Nathan Sidwell  <nathan@acm.org>
-
-       * parser.c (cp_parser_explicit_specialization): Refactor
-       to avoid leak of num_template_parameter_lists value.
-
-2020-08-04  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94024
-       * init.c (sort_mem_initializers): Preserve TREE_TYPE of the
-       member initializer list node.
-       (emit_mem_initializers): Set input_location when performing each
-       member initialization.
-       * parser.c (cp_parser_mem_initializer): Attach the source
-       location of this initializer to a dummy EMPTY_CLASS_EXPR
-       within the TREE_TYPE of the list node.
-       * pt.c (tsubst_initializer_list): Preserve TREE_TYPE of the
-       member initializer list node.
-
-2020-08-03  Marek Polacek  <polacek@redhat.com>
-
-       * cp-tree.h (after_nsdmi_defaulted_late_checks): Remove.
-
-2020-08-03  Marek Polacek  <polacek@redhat.com>
-
-       DR 2032
-       PR c++/96218
-       * pt.c (check_default_tmpl_args): Also consider variable
-       templates.
-
-2020-07-31  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/96182
-       * decl.c (finish_function): In constexpr functions use for C++14 and
-       later error instead of warning if no return statement is present and
-       diagnose it regardless of warn_return_type.  Move the warn_return_type
-       diagnostics earlier in the function.
-
-2020-07-31  Martin Sebor  <msebor@redhat.com>
-
-       PR c++/96003
-       * class.c (build_base_path): Set no-warning bit on the synthesized
-       conditional expression in static_cast.
-
-2020-07-31  Richard Biener  <rguenther@suse.de>
-
-       PR debug/96383
-       * cp-objcp-common.h (LANG_HOOKS_FINALIZE_EARLY_DEBUG):
-       Define to c_common_finalize_early_debug.
-
-2020-07-31  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/96197
-       * constexpr.c (cxx_eval_constant_expression) <case CONST_DECL>:
-       Pass false to decl_constant_value and decl_really_constant_value
-       so that they don't unshare their result.
-       * cp-tree.h (decl_constant_value): New declaration with an added
-       bool parameter.
-       (decl_really_constant_value): Add bool parameter defaulting to
-       true to existing declaration.
-       * init.c (constant_value_1): Add bool parameter which controls
-       whether to unshare the initializer before returning.  Call
-       unshare_expr at most once.
-       (scalar_constant_value): Pass true to constant_value_1's new
-       bool parameter.
-       (decl_really_constant_value): Add bool parameter and forward it
-       to constant_value_1.
-       (decl_constant_value): Likewise, but instead define a new
-       overload with an added bool parameter.
-
-2020-07-30  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/64194
-       * pt.c (resolve_overloaded_unification): If the function
-       template specialization has a placeholder return type,
-       then instantiate it before attempting unification.
-
-2020-07-30  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/95486
-       * pt.c (alias_ctad_tweaks): Call remove_constraints before
-       calling set_constraints.
-
-2020-07-30  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/96106
-       * pt.c (reduce_template_parm_level): Propagate DECL_VIRTUAL_P
-       from the original TEMPLATE_PARM_DECL to the new lowered one.
-
-2020-07-30  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/96164
-       * constraint.cc (constraints_satisfied_p): Return true if
-       !flags_concepts.
-       * pt.c (do_type_instantiation): Update a paragraph taken from
-       [temp.explicit] to reflect the latest specification.  Don't
-       instantiate a member with unsatisfied constraints.
-
-2020-07-29  Jason Merrill  <jason@redhat.com>
-
-       PR c++/91427
-       * cp-tree.h (IMPLICIT_RVALUE_P): New.
-       (enum cp_lvalue_kind_flags): Add clk_implicit_rval.
-       (implicit_rvalue_p, set_implicit_rvalue_p): New.
-       * call.c (reference_binding): Check clk_implicit_rval.
-       (build_over_call): Adjust C++20 implicit move.
-       * coroutines.cc (finish_co_return_stmt): Simplify implicit move.
-       * except.c (build_throw): Adjust C++20 implicit move.
-       * pt.c (tsubst_copy_and_build) [STATIC_CAST_EXPR]: Propagate
-       IMPLICIT_RVALUE_P.
-       * tree.c (lvalue_kind): Set clk_implicit_rval.
-       * typeck.c (treat_lvalue_as_rvalue_p): Overhaul.
-       (maybe_warn_pessimizing_move): Adjust.
-       (check_return_expr): Adjust C++20 implicit move.
-
-2020-07-29  Jason Merrill  <jason@redhat.com>
-
-       PR c++/91212
-       * call.c (build_over_call): Don't call a const ref
-       overload for implicit move.
-
-2020-07-28  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-gimplify.c (cp_genericize_r): Set IMPORTED_DECL's context.
-       * cp-objcp-common.c (cp_pushdecl): Set decl's context.
-       * decl.c (grokfndecl): Make DECL_CONTEXT setting clearer.
-
-2020-07-28  Nathan Sidwell  <nathan@acm.org>
-
-       * class.c (fixup_type_variants): Copy TYPE_SIZE and
-       TYPE_SIZE_UINIT.
-       (finish_struct): Call it.
-
-2020-07-28  Nathan Sidwell  <nathan@acm.org>
-
-       * ptree.c (cxx_print_decl): Better indentation.
-
-2020-07-28  Jakub Jelinek  <jakub@redhat.com>
-           Mark Wielaard  <mark@klomp.org>
-
-       PR c++/96328
-       * parser.c (cp_lexer_safe_previous_token): Don't call
-       cp_lexer_previous_token, instead inline it by hand and return NULL
-       instead of failing assertion if all previous tokens until the first
-       one are purged.
-       (cp_parser_error_1): Optimize - only call cp_lexer_safe_previous_token
-       if token->type is CPP_NAME.  Use cp_lexer_safe_previous_token instead
-       of cp_lexer_previous_token for the missing_token_desc != RT_NONE
-       case too.
-
-2020-07-27  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (enum cp_tree_index): Add CPTI_AS_BASE_IDENTIFIER.
-       (as_base_identifier): Define.
-       * decl.c (initialize_predifined_identifiers): Initialize as_base
-       identifier.
-       * class.c (layout_class_type): Name the as-base type.  Zap
-       NSDMI its fields may have.
-
-2020-07-22  Nathan Sidwell  <nathan@acm.org>
-
-       * class.c (maybe_add_class_template_decl_list): Don't add CONST_DECLs.
-
-2020-07-22  Nathan Sidwell  <nathan@acm.org>
-
-       * typeck.c (structural_comptypes): [DECLTYPE_TYPE] break
-       apart complex if.
-       [UNDERLYING_TYPE]: Use an if.
-       [TYPEOF_TYPE]: New.
-
-2020-07-22  Nathan Sidwell  <nathan@acm.org>
-
-       * decl.c (decls_match): Move variables into scopes
-       they're needed in.
-       (duplicate_decls): Use STRIP_TEMPLATE.
-       (build_typename_type): Move var decls to their assignments.
-       (begin_function_body): Likewise.
-       * decl2.c (get_guard): Likewise.
-       (mark_used): Use true for truthiness.
-       * error.c (dump_aggr_type): Hold the decl in a var called
-       'decl', not 'name'.
-
-2020-07-22  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (struct tree_lambda_expr): Shrink
-       default_capture_mode & discriminator.
-
-2020-07-22  Nathan Sidwell  <nathan@acm.org>
-
-       * mangle.c (decl_is_template_id): Rename to ...
-       (maybe_template_info): ... here.  Return the template info,
-       rather than use a pointer.  Adjust all callers.
-       (find_substitution): Use template_args_equal, rather than
-       local check.
-
-2020-07-22  Tobias Burnus  <tobias@codesourcery.com>
-
-       * parser.c (cp_parser_omp_clause_hint): Require nonnegative hint.
-       (cp_parser_omp_critical): Permit hint(0) clause without named critical.
-       * pt.c (tsubst_expr): Re-check the latter for templates.
-
-2020-07-21  Sunil K Pandey  <skpgkp2@gmail.com>
-
-       PR target/95237
-       * decl.c (cp_finish_decl): Call target hook
-       lower_local_decl_alignment to lower local decl alignment.
-
-2020-07-21  Nathan Sidwell  <nathan@acm.org>
-
-       * parser.c (cp_lexer_consume_token): Drop PRAGMA_EOL assert.
-       (cp_parser_skip_to_closing_parenthesis_1): Only pass start token
-       to pragma skipper if recovering.
-       (cp_parser_skip_to_pragma_eol): Only purge and change pragma
-       state when recovering.
-
-2020-07-20  Jason Merrill  <jason@redhat.com>
-
-       * pt.c (type_dependent_expression_p): A pseudo-dtor can be
-       dependent.
-       * semantics.c (finish_call_expr): Use build_trivial_dtor_call for
-       pseudo-destructor.
-       (finish_pseudo_destructor_expr): Leave type NULL for dependent arg.
-
-2020-07-20  Jason Merrill  <jason@redhat.com>
-
-       * mangle.c (write_base_ref): New.
-       (write_expression): Use it for base field COMPONENT_REFs.
-       * pt.c (invalid_tparm_referent_p): Canonicalize the type
-       of array offsets.  Allow subobjects.
-
-2020-07-20  Jason Merrill  <jason@redhat.com>
-
-       * pt.c (collect_ctor_idx_types): Add 'const' when deducing from
-       a string constant.
-
-2020-07-17  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/79815
-       * decl.c (grokdeclarator): Detect cv-qual decltype(auto).
-       * pt.c (do_auto_deduction): Likewise.
-
-2020-07-16  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95591
-       PR c++/95599
-       PR c++/95823
-       PR c++/95824
-       PR c++/95895
-       * coroutines.cc (struct coro_ret_data): Delete.
-       (coro_maybe_expand_co_return): Delete.
-       (co_return_expander): Delete.
-       (expand_co_returns): Delete.
-       (co_await_find_in_subtree): Remove unused name.
-       (build_actor_fn): Remove unused parm, remove handling
-       for co_return expansion.
-       (register_await_info): Demote duplicate info message to a
-       warning.
-       (coro_make_frame_entry): Move closer to use site.
-       (struct susp_frame_data): Add fields for final suspend label
-       and a flag to indicate await expressions with initializers.
-       (captures_temporary): Delete.
-       (register_awaits): Remove unused code, update comments.
-       (find_any_await): New.
-       (tmp_target_expr_p): New.
-       (struct interesting): New.
-       (find_interesting_subtree): New.
-       (struct var_nest_node): New.
-       (flatten_await_stmt): New.
-       (handle_nested_conditionals): New.
-       (process_conditional): New.
-       (replace_statement_captures): Rename to...
-       (maybe_promote_temps): ... this.
-       (maybe_promote_captured_temps): Delete.
-       (analyze_expression_awaits): Check for await expressions with
-       initializers.  Simplify handling for truth-and/or-if.
-       (expand_one_truth_if): Simplify (map cases that need expansion
-       to COND_EXPR).
-       (await_statement_walker): Handle CO_RETURN_EXPR. Simplify the
-       handling for truth-and/or-if expressions.
-       (register_local_var_uses): Ensure that we create names in the
-       implementation namespace.
-       (morph_fn_to_coro): Add final suspend label to suspend frame
-       callback data and remove it from the build_actor_fn call.
-
-2020-07-16  Marek Polacek  <polacek@redhat.com>
-
-       * call.c (convert_like): Remove macro and introduce a new
-       wrapper instead.
-       (convert_like_with_context): Likewise.
-       (convert_like_real): Rename to convert_like.
-       (convert_like_real_1): Rename to convert_like_internal.  Call
-       convert_like instead of convert_like_real therein.
-       (perform_direct_initialization_if_possible): Call convert_like
-       instead of convert_like_real.
-
-2020-07-16  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc: Correct some spelling errors
-       in comments.
-
-2020-07-15  Nathan Sidwell  <nathan@acm.org>
-
-       * parser.c (cp_parser_declaration): Avoid copying tokens.
-       (cp_parser_block_declaration): RAII token pointer.
-
-2020-07-15  Nathan Sidwell  <nathan@acm.org>
-
-       * parser.c (cp_parser_skip_to_closing_parenthesis_1): Deal with
-       meeting a deferred pragma.
-       (cp_parser_skip_to_end_of_statement): Likewise.
-       (cp_parser_skip_to_end_of_block_or_statement): Likewise.
-       (cp_parser_skip_to_pragma_eol): We should never meet EOF.
-       (cp_parser_omp_declare_simd): Likewise.
-       (cp_parser_omp_declare_reduction, cp_parser_oacc_routine)
-       (pragma_lex): Likewise.
-
-2020-07-14  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/95789
-       PR c++/96104
-       PR c++/96179
-       * call.c (convert_like_real_1): Renamed from convert_like_real.
-       (convert_like_real): New wrapper for convert_like_real_1.
-
-2020-07-14  Nathan Sidwell  <nathan@acm.org>
-
-       * parser.c (cp_lexer_alloc): Do not deal with PCH here.
-       (cp_lexer_new_main): Deal with PCH here.  Store the tokens directly
-       into the buffer.
-       (cp_lexer_new_from_tokens): Assert last token isn't purged either.
-       (cp_lexer_get_preprocessor_token): Change first arg to flags, adjust.
-       (cp_parser_new): Pass the lexer in, don't create it here.
-       (cp_parser_translation_unit): Initialize access checks here.
-       (cp_parser_initial_pragma): First token is provided by caller,
-       don't deal with PCH stopping here.  Adjust error message.
-       (c_parse_file): Adjust, change error message to avoid C++20 module
-       confusion.
-
-2020-07-14  Nathan Sidwell  <nathan@acm.org>
-
-       * ptree.c (cxx_print_type): Add TYPEOF_TYPE and BASES.
-
-2020-07-14  Nathan Sidwell  <nathan@acm.org>
-
-       * class.c (build_base_field_1): Cache CLASSTYPE_AS_BASE.
-       (build_self_reference): Rename value -> decl.
-       (dump_class_hierarchy_1): Cache CLASSTYPE_AS_BASE.
-
-2020-07-14  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/95820
-       * decl.c (grokdeclarator) <case cdk_function>: Check also
-       pointers/references/... to functions.
-
-2020-07-14  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h: Correct some tree lang flag comments,
-       reformat some structure definitions.  Note some structure
-       sizes.  Clarify some comments.
-       (yyungetc): Delete.  Not been a thing for some time.
-       * class.c (copy_fndecl_with_name): Comment.
-       (check_bases_and_members): Unnecessary {}.
-       (layout_class_type): Comment.
-       * cp-tree.def (UNBOUND_CLASS_TEMPLATE): Adjust comment.
-       * decl.c:  Fix some formatting & whitespace issues.
-       (function_requirements_equivalent_p): Note why
-       substitutions are needed.
-       * decl2.c (no_linkage_error): Note that heroics about
-       'typedef struct { ... };' are no longer needed.
-       * method.c: Whitespace.
-       * name-lookup.c: Whitespace.
-       (add_decl_to_level): Reformat a line.
-       (print_binding_stack): Mark as DEBUG_FUNCTION.
-       (has_using_namespace_std_directive_p): Delete comment.
-       * pt.c: Whitespace
-       * ptree.c: Whitespace.
-       * rtti.c: Whitespace & comment.
-       * tree.c: Comment.
-       * typeck.c (structural_comptypes): Add comment.
-
-2020-07-13  Nathan Sidwell  <nathan@acm.org>
-
-       * Make-lang.in (c++.disclean): Likewise.
-
-2020-07-13  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/96077
-       * parser.c (cp_parser_enum_specifier): Commit to tentative parse
-       after we've seen an opening brace.
-
-2020-07-10  Jason Merrill  <jason@redhat.com>
-
-       * tree.c (structural_type_p): Allow unions.
-       * mangle.c (write_expression): Express unions with a designator.
-
-2020-07-10  Jason Merrill  <jason@redhat.com>
-
-       * pt.c (convert_nontype_argument): Handle REAL_TYPE.
-       (invalid_nontype_parm_type_p): Allow all structural types.
-       * tree.c (structural_type_p): Use SCALAR_TYPE_P.
-
-2020-07-10  Jason Merrill  <jason@redhat.com>
-
-       PR c++/96105
-       PR c++/96052
-       PR c++/95976
-       * class.c (check_field_decls): An array of empty classes is not an
-       empty data member.
-       (layout_empty_base_or_field): Handle explicit alignment.
-       Fix union handling.
-
-2020-07-09  Julian Brown  <julian@codesourcery.com>
-           Thomas Schwinge  <thomas@codesourcery.com>
-
-       PR middle-end/95270
-       * semantics.c (finish_omp_clauses): Likewise.
-
-2020-07-09  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/96132
-       * constexpr.c (potential_constant_expression_1) <case PARM_DECL>:
-       Restore dependent_type_p check that guarded the call to
-       is_really_empty_class.
-
-2020-07-08  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/95497
-       * constexpr.c (potential_constant_expression_1) <case PARM_DECL>:
-       When processing_template_decl, check COMPLETE_TYPE_P before
-       calling is_really_empty_class.  Don't check dependent_type_p.
-
-2020-07-08  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/96103
-       * parser.c (cp_parser_decltype): Print error about using decltype(auto)
-       in C++11.  Check that the token following "auto" is ")".
-
-2020-07-07  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/95303
-       * cxx-pretty-print.c (pp_cxx_unqualified_id): Check
-       PRIMARY_TEMPLATE_P before printing the innermost template
-       arguments.
-
-2020-07-07  Martin Sebor  <msebor@redhat.com>
-
-       PR c++/96063
-       * parser.c (class_decl_loc_t::diag_mismatched_tags): Print notes only
-       if warning_at returns nonzero.
-
-2020-07-06  Martin Sebor  <msebor@redhat.com>
-
-       PR c++/95984
-       * call.c (build_over_call): Check calls only when tf_warning is set.
-
-2020-07-06  Nathan Sidwell  <nathan@acm.org>
-
-       * decl.c (push_library_fn): Return the decl pushdecl_toplevel returns.
-       * except.c (verify_library_fn): Replace with ...
-       (declare_library_fn_1): ... this fn.  Always push the fn.
-       (declare_library_fn): Call it.
-       (build_throw): Call declare_library_fn_1.
-
-2020-07-06  Jonathan Wakely  <jwakely@redhat.com>
-
-       PR c++/96068
-       * parser.c (cp_parser_toplevel_declaration): Only do pedwarn for
-       empty-declaration in C++98.
-
-2020-07-02  Jason Merrill  <jason@redhat.com>
-           Jakub Jelinek  <jakub@redhat.com>
-
-       * decl.c (grokfndecl): Allow consteval virtual.
-       * search.c (check_final_overrider): Check consteval mismatch.
-       * constexpr.c (cxx_eval_thunk_call): New.
-       (cxx_eval_call_expression): Call it.
-       * cvt.c (cp_get_fndecl_from_callee): Handle FDESC_EXPR.
-       * decl2.c (mark_vtable_entries): Track vtables with consteval.
-       (maybe_emit_vtables): Pass consteval_vtables through.
-       (clear_consteval_vfns): Replace consteval with nullptr.
-       (c_parse_final_cleanups): Call it.
-
-2020-07-01  Nathan Sidwell  <nathan@acm.org>
-
-       * class.c (copy_fndecl_with_name): Add additional predicate args, do
-       not deduce them locally.
-       (copy_operator_fn): Adjust copy_fndecl_with_name call.
-       (build_clone): Add vtt and inherited predicate args.  Pass through
-       to copy_fndecl_with_name call.
-       (build_cdtor_clones): Likewise, pass through to build_clone as
-       needed.
-       (build_cdtor): Determine vtt and inherited here.
-       * cp-tree.h (DECL_NEEDS_CTT_PARM_P): Delete.
-
-2020-06-30  Nathan Sidwell  <nathan@acm.org>
-
-       * cp-tree.h (copy_fndecl_with_name): Rename to ...
-       (copy_operatorn_fn): ... this.  Change arg type.
-       (clone_function_decl): Rename to ...
-       (clone_cdtor): ... this.
-       * class.c (copy_fndecl_with_name): Make static.
-       (copy_operator_fn): New wrapper.
-       (build_clones): Rename to ...
-       (build_cdtor_clones): ... this.
-       (clone_function_decl): Rename to ...
-       (clone_cdtor): ... this.  Adjust build_clones calls.
-       (clone_constructors_and_destructors): Adjust clone_function_decl
-       calls.
-       * method.c (implicitly_declare_fn): Adjust copy_fndecl_with_name
-       call.
-       (lazily_declare_fn): Adjust clone_function_decl call.
-       * pt.c (tsubst_function_decl): Likewise.
-       (instantiate_template_1): Likewise.
-
-2020-06-30  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (morph_fn_to_coro): Remove trailing
-       space in a diagnostic.
-
-2020-06-30  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (expand_one_await_expression): Remove
-       code dealing with initial suspend.
-       (build_actor_fn): Remove code special-casing initial
-       and final suspend. Handle the final suspend and marking
-       of the coroutine as done.
-       (coro_rewrite_function_body): New.
-       (bind_expr_find_in_subtree): Remove.
-       (coro_body_contains_bind_expr_p): Remove.
-       (morph_fn_to_coro): Split the rewrite of the original
-       function into coro_rewrite_function_body and call it.
-
-2020-06-29  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94553
-       * decl.c (duplicate_decls): Make sure a concept or a variable
-       template is unique in its declarative region.
-
-2020-06-29  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/95568
-       * pt.c (collect_ctor_idx_types): Use TREE_TYPE.
-
-2020-06-28  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95711
-       * coroutines.cc (register_local_var_uses): Skip past
-       namespace decls.
-
-2020-06-27  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95736
-       * coroutines.cc (get_awaitable_var): New helper.
-       (build_co_await): Check more carefully before
-       copying an awaitable.
-       (expand_one_await_expression): No initializer
-       is required when the awaitable is not a temp.
-       (register_awaits): Remove handling that is now
-       completed when the await expression is built.
-
-2020-06-27  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (morph_fn_to_coro): Diagnose unavailable
-       get_return_object_on_allocation_failure.
-
-2020-06-26  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95519
-       * coroutines.cc (struct coroutine_info):Add a field
-       to hold computed p.return_void expressions.
-       (coro_build_promise_expression): New.
-       (get_coroutine_return_void_expr): New.
-       (finish_co_yield_expr): Build the promise expression
-       using coro_build_promise_expression.
-       (finish_co_return_stmt): Likewise.
-       (build_init_or_final_await): Likewise.
-       (morph_fn_to_coro): Likewise, for several cases.
-
-2020-06-26  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (morph_fn_to_coro): Handle error
-       returns in building g-r-o-o-a-f expressions.
-
-2020-06-24  Nicholas Krause  <xerofoify@gmail.com>
-
-       PR c++/95672
-       * typeck2.c (cxx_incomplete_type_diagnostic): Add missing
-       TYPE_EXPANSION_PACK check for diagnosing incomplete types in
-       cxx_incomplete_type_diagnostic.
-
-2020-06-24  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95518
-       PR c++/95813
-       * coroutines.cc (act_des_fn): Copy function
-       attributes onto the outlined coroutine helpers.
-
-2020-06-24  Jason Merrill  <jason@redhat.com>
-
-       * call.c (build_over_call): Only call build_base_path once.
-
-2020-06-24  Jason Merrill  <jason@redhat.com>
-
-       PR c++/95719
-       * call.c (build_over_call): Look up the overrider in base_binfo.
-       * class.c (lookup_vfn_in_binfo): Look through BINFO_PRIMARY_P.
-
-2020-06-23  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93976
-       Implement C++20 P2082R1, Fixing CTAD for aggregates.
-       * cp-tree.h (TPARMS_PRIMARY_TEMPLATE): Split out from...
-       (DECL_PRIMARY_TEMPLATE): ...here.
-       (builtin_guide_p): Declare.
-       * decl.c (reshape_init_class): Handle bases of a template.
-       (reshape_init_r): An array with dependent bound takes a single
-       initializer.
-       * pt.c (tsubst_default_argument): Shortcut {}.
-       (unify_pack_expansion): Allow omitted arguments to trailing pack.
-       (builtin_guide_p): New.
-       (collect_ctor_idx_types): Give a trailing pack a {} default
-       argument.  Handle arrays better.
-
-2020-06-23  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95477
-       * coroutines.cc (morph_fn_to_coro): Apply a cleanup to
-       the get return object when the DTOR is non-trivial.
-
-2020-06-20  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95505
-       * coroutines.cc (morph_fn_to_coro): Update handling of
-       get-return-object-on-allocation-fail and diagnose missing
-       std::nothrow.
-
-2020-06-20  Jason Merrill  <jason@redhat.com>
-
-       * call.c (joust): Only compare constraints for non-template
-       candidates with matching parameters.
-       * pt.c (tsubst_pack_expansion): Fix getting a type parameter
-       pack.
-       (more_specialized_fn): Only compare constraints for candidates with
-       matching parameters.
-
-2020-06-19  Jason Merrill  <jason@redhat.com>
-
-       * method.c (early_check_defaulted_comparison): Allow defaulting
-       comparison outside class.  Complain if non-member operator isn't a
-       friend.
-
-2020-06-18  Jason Merrill  <jason@redhat.com>
-
-       * method.c (early_check_defaulted_comparison): Check for &&.
-       (build_comparison_op): Allow empty union.  Diagnose non-category
-       type.
-       (common_comparison_type): Remove handling for non-category type.
-
-2020-06-18  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/95735
-       * pt.c (finish_template_variable): Return if
-       coerce_innermost_template_parms return error_mark_node.
-
-2020-06-18  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/95728
-       * pt.c (tsubst_copy_and_build) <case NEW_EXPR>: Return error_mark_node
-       if placement is erroneous.
-
-2020-06-17  Jonathan Wakely  <jwakely@redhat.com>
-
-       PR c++/66159
-       * parser.c (cp_parser_elaborated_type_specifier): Do not warn
-       unless in a declaration.
-
-2020-06-17  Jason Merrill  <jason@redhat.com>
-
-       * cp-tree.h (copy_fndecl_with_name): Declare.
-       * class.c (copy_fndecl_with_name): Split out from...
-       (build_clone): ...here.
-       (add_implicitly_declared_members): Add op== to TYPE_FIELDS.
-       * method.c (implicitly_declare_fn): Use copy_fndecl_with_name.
-
-2020-06-17  Jason Merrill  <jason@redhat.com>
-
-       * call.c (build_new_op_1): Don't look for a CALL_EXPR when
-       calling a consteval function.
-
-2020-06-17  Jason Merrill  <jason@redhat.com>
-
-       * decl2.c (grokfield): Pass SD_DEFAULTED and SD_DELETED.
-       * decl.c (duplicate_decls): Reduce error for delete
-       after earlier declaration to pedwarn.
-
-2020-06-17  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/95508
-       * constexpr.c (maybe_fold_non_dependent_expr): New.
-       * cp-tree.h (maybe_fold_non_dependent_expr): Declare.
-       * typeck.c (cp_build_array_ref): Call maybe_fold_non_dependent_expr
-       instead of maybe_constant_value.
-
-2020-06-16  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/95369
-       * call.c (add_list_candidates): Return if a designated initializer
-       is used with a non-aggregate.
-       (implicit_conversion_error): Give an error for the case above.
-
-2020-06-16  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/95560
-       * name-lookup.c (check_local_shadow): Check if types are
-       non-null before calling same_type_p.
-
-2020-06-16  Jakub Jelinek  <jakub@redhat.com>
-
-       * semantics.c (handle_omp_for_class_iterator): Adjust
-       c_omp_check_loop_iv_exprs caller.
-       (finish_omp_for): Likewise.  Don't call fold_build_cleanup_point_expr
-       before calling c_finish_omp_for and c_omp_check_loop_iv, move it
-       after those calls.
-       * pt.c (tsubst_omp_for_iterator): Handle non-rectangular loops.
-
-2020-06-16  Jakub Jelinek  <jakub@redhat.com>
-
-       * parser.c (cp_parser_omp_clause_schedule): Reject modifier separated
-       from kind by comma rather than colon.
-
-2020-06-16  Patrick Palka  <ppalka@redhat.com>
-
-       * pt.c (perform_instantiation_time_access_checks): No need to
-       tsubst into decl.
-       * semantics.c (enforce_access): Verify that decl is not
-       dependent.
-
-2020-06-16  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/41437
-       PR c++/47346
-       * cp-tree.h (qualified_typedef_usage_s): Delete.
-       (qualified_typedef_usage_t): Delete.
-       (deferred_access_check): Move up in file.
-       (tree_template_info::typedefs_needing_access_checking): Delete.
-       (tree_template_info::deferred_access_checks): New field.
-       (TI_TYPEDEFS_NEEDING_ACCESS_CHECKING): Rename to ...
-       (TI_DEFERRED_ACCESS_CHECKS): ... this, and adjust accordingly.
-       * pt.c (perform_typedefs_access_check): Rename to ...
-       (perform_instantiation_time_access_checks): ... this, and adjust
-       accordingly.  Remove unnecessary tree tests.
-       (instantiate_class_template_1): Adjust accordingly.
-       (instantiate_decl): Likewise.
-       * semantics.c (enforce_access): Likewise.
-
-2020-06-16  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/41437
-       PR c++/47346
-       * call.c (enforce_access): Move to semantics.c.
-       * cp-tree.h (enforce_access): Delete.
-       (get_types_needing_access_check): Delete.
-       (add_typedef_to_current_template_for_access_check): Delete.
-       * decl.c (make_typename_type): Adjust accordingly.  Use
-       check_accessibility_of_qualified_id instead of directly using
-       perform_or_defer_access_check.
-       * parser.c (cp_parser_template_declaration_after_parameters):
-       Don't push a dk_no_check access state when parsing a template.
-       * pt.c (get_types_needing_access_check): Delete.
-       (append_type_to_template_for_access_check_1): Delete.
-       (perform_typedefs_access_check): Adjust.  If type_decl is a
-       FIELD_DECL, also check its DECL_CONTEXT for dependence. Use
-       tsubst_copy instead of tsubst to substitute into type_decl so
-       that we substitute into the DECL_CONTEXT of a FIELD_DECL.
-       (append_type_to_template_for_access_check): Delete.
-       * search.c (accessible_p): Remove the processing_template_decl
-       early exit.
-       * semantics.c (enforce_access): Moved from call.c.  If we're
-       parsing a template and the access check failed, add the check to
-       TI_TYPEDEFS_NEEDING_ACCESS_CHECKING.
-       (perform_or_defer_access_check): Adjust comment.
-       (add_typedef_to_current_template_for_access_check): Delete.
-       (check_accessibility_of_qualified_id):  Adjust accordingly.
-       Exit early if the scope is dependent.
-
-2020-06-11  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/93467
-       * constraint.cc (associate_classtype_constraints): If there is a
-       discrepancy between the current template depth and the template
-       depth of the original declaration, then adjust the template
-       parameter depth within the current constraints appropriately.
-       * pt.c (tsubst_friend_class): Substitute into and set the
-       constraints on the injected declaration.
-
-2020-06-11  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (instantiate_coro_traits): Pass a reference
-       to lambda closure objects to traits instantiation.
-       (morph_fn_to_coro): Likewise for promise parameter
-       preview and allocator lookup.
-
-2020-06-10  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95440
-       * call.c (add_candidates): Use vec_safe_length() for
-       testing the arguments list.
-       (build_new_method_call_1): Use vec_safe_is_empty() when
-       checking for an empty args list.
-
-2020-06-10  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/95562
-       * parser.c (cp_parser_direct_declarator): Clear
-       CP_PARSER_FLAGS_DELAY_NOEXCEPT if the declarator kind is not
-       cdk_id.
-
-2020-06-09  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95137
-       * coroutines.cc (expand_one_await_expression): Build separate
-       DTOR trees for the awaitable object on the destroy and resume
-       paths.
-
-2020-06-09  Jason Merrill  <jason@redhat.com>
-
-       PR c++/95552
-       * cp-gimplify.c (predeclare_vla): Only predeclare a VLA if it's
-       wrapped in a pointer type.
-
-2020-06-05  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/95369
-       * call.c (build_converted_constant_expr_internal): Allow
-       list-initialization.
-
-2020-06-05  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * cp-tree.def (CO_RETURN_EXPR): Correct the class
-       to use tcc_statement.
-
-2020-06-05  Jason Merrill  <jason@redhat.com>
-
-       * error.c (dump_binary_op): Handle negative operand to
-       POINTER_PLUS_EXPR.
-
-2020-06-04  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93310
-       * constexpr.c (cxx_eval_constant_expression) [OBJ_TYPE_REF]:
-       Evaluate OBJ_TYPE_REF_EXPR.
-
-2020-06-04  Jason Merrill  <jason@redhat.com>
-
-       PR c++/95158
-       * class.c (lookup_vfn_in_binfo): New.
-       * call.c (build_over_call): Use it.
-       * cp-tree.h (resolves_to_fixed_type_p): Add default argument.
-       (lookup_vfn_in_binfo): Declare.
-
-2020-06-04  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95346
-       * coroutines.cc (morph_fn_to_coro): Ensure that the get-
-       return-object is constructed correctly; When it is not the
-       final return value, pass it to the CTOR of the return type
-       as an rvalue, per the standard comment.
-
-2020-06-04  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/82304
-       PR c++/95307
-       * constexpr.c (cxx_eval_constant_expression): Diagnose CONVERT_EXPR
-       conversions from pointer types to arithmetic types here...
-       (cxx_eval_outermost_constant_expr): ... instead of here.
-
-2020-06-03  Mark Wielaard  <mark@klomp.org>
-
-       * parser.c (cp_lexer_safe_previous_token): New function.
-       (cp_parser_error_1): Add name_hint if the previous token is
-       a string literal and next token is a CPP_NAME and we have a
-       missing header suggestion for the name.
-
-2020-06-03  Patrick Palka  <ppalka@redhat.com>
-
-       * pt.c (process_partial_specialization): Pass the full set of
-       generic template arguments to strictly_subsumes.
-
-2020-06-03  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/92103
-       * pt.c (most_specialized_partial_spec): Reorganize the loop over
-       DECL_TEMPLATE_SPECIALIZATIONS.  Check constraints_satisfied_p on
-       the original template declaration, not on the tsubsted one.
-
-2020-06-03  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95345
-       * coroutines.cc (finish_co_await_expr): Revise to allow for
-       parameter packs.
-       (finish_co_yield_expr): Likewise.
-
-2020-06-03  Jason Merrill  <jason@redhat.com>
-
-       PR c++/95232
-       * cp-tree.h (predeclare_vla): Declare.
-       * cp-gimplify.c (predeclare_vla): Handle getting a decl.
-       * pt.c (tsubst_expr) [DECL_EXPR]: Use it.
-
-2020-06-03  Tobias Burnus  <tobias@codesourcery.com>
-
-       * cp-gimplify.c (cxx_omp_predetermined_mapping): New.
-       * cp-objcp-common.h (LANG_HOOKS_OMP_PREDETERMINED_MAPPING): Redfine.
-       * cp-tree.h (cxx_omp_predetermined_mapping): Declare.
-
-2020-06-02  Jason Merrill  <jason@redhat.com>
-
-       PR c++/95193
-       * pt.c (tsubst_decl): Relax assert.
-
-2020-06-02  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95050
-       * coroutines.cc (build_co_await): Wrap the co_await expression
-       in a TARGET_EXPR, where needed.
-       (finish_co_yield_expr): Likewise.
-
-2020-06-02  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/92633
-       PR c++/92838
-       * pt.c (tsubst_function_decl): Don't do set_constraints when
-       regenerating a lambda.
-       (tsubst_lambda_expr): Substitute into the lambda's constraints
-       and do set_constraints here.
-
-2020-06-01  Jason Merrill  <jason@redhat.com>
-
-       PR c++/95466
-       PR c++/95311
-       PR c++/95221
-       * class.c (build_vfn_ref): Revert 95311 change.
-       * cp-ubsan.c (cp_ubsan_maybe_instrument_member_call): Build a
-       COMPOUND_EXPR.
-
-2020-06-01  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95350
-       * coroutines.cc (struct param_info): Remove rv_ref field.
-       (build_actor_fn): Remove specifial rvalue ref handling.
-       (morph_fn_to_coro): Likewise.
-
-2020-05-31  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95087
-       * coroutines.cc (morph_fn_to_coro): If we see an
-       early fatal error, drop the erroneous function body.
-
-2020-05-31  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (build_co_await): Remove unused
-       variable.
-       (finish_co_await_expr): Likewise.
-       (finish_co_yield_expr): Likewise; revise comment.
-
-2020-05-30  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (morph_fn_to_coro): Revise initialization
-       of the frame pointer to avoid an unused value.
-
-2020-05-30  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/95386
-       * constraint.cc (satisfaction_value): Accept INTEGER_CST of any
-       boolean type.
-
-2020-05-29  Patrick Palka  <ppalka@redhat.com>
-           Jason Merrill  <jason@redhat.com>
-
-       PR c++/95181
-       * class.c (add_method): Let special member function templates
-       coexist if they are not equivalently constrained, or in a class
-       template.
-
-2020-05-29  Jason Merrill  <jason@redhat.com>
-
-       PR c++/95371
-       * pt.c (process_template_parm): Set DECL_TEMPLATE_INFO
-       on the DECL_TEMPLATE_RESULT.
-
-2020-05-29  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/95344
-       * cp-gimplify.c (cp_fold) <case MODIFY_EXPR>: Don't set
-       TREE_THIS_VOLATILE here.
-       (cp_fold): Set it here along with TREE_NO_WARNING.
-
-2020-05-29  Jason Merrill  <jason@redhat.com>
-
-       PR c++/95311
-       PR c++/95221
-       * class.c (build_vfn_ref): Don't fold the INDIRECT_REF.
-
-2020-05-29  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/92652
-       PR c++/93698
-       PR c++/94128
-       * parser.c (cp_parser_requires_clause_expression): Temporarily
-       increment processing_template_decl only if it is 0.
-       (cp_parser_constraint_expression): Likewise.
-       (cp_parser_requires_expression): Likewise.
-
-2020-05-29  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/95241
-       * constexpr.c (get_or_insert_ctor_field): Add limited support
-       for RANGE_EXPR index lookups.
-
-2020-05-28  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/95328
-       * decl.c (cp_finish_decomp): Call complete_type before checking
-       COMPLETE_TYPE_P.
-
-2020-05-28  Jason Merrill  <jason@redhat.com>
-
-       PR c++/94926
-       * decl.c (cp_finish_decl): Revert r9-297 change.
-       (check_static_variable_definition): Likewise.
-       * constexpr.c (ensure_literal_type_for_constexpr_object): Likewise.
-       * pt.c (instantiate_decl): Return early on type error.
-
-2020-05-27  Jason Merrill  <jason@redhat.com>
-
-       PR c++/95319
-       * decl.c (reshape_init_array_1): Don't reuse in overload context.
-
-2020-05-27  Jason Merrill  <jason@redhat.com>
-
-       PR c++/95242
-       * call.c (build_new_op_1): Suppress
-       warn_zero_as_null_pointer_constant across comparison of <=> result
-       to 0.
-
-2020-05-27  Jason Merrill  <jason@redhat.com>
-
-       PR c++/95222
-       * decl.c (grokdeclarator): Don't shift attributes in TYPENAME
-       context.
-
-2020-05-27  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/95263
-       * pt.c (lookup_template_class_1): Restore alias template mutation.
-
-2020-05-26  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/95197
-       * cp-gimplify.c: Include omp-general.h.
-       (cp_genericize_r) <case OMP_DISTRIBUTE>: For class iteration
-       variables in composite distribute parallel for, instantiate copy
-       ctor of their types.
-
-2020-05-23  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94038
-       * constexpr.c (cxx_eval_constant_expression)
-       <case TEMPLATE_ID_EXPR>: Don't evaluate the concept when
-       constexpr evaluation is uid-sensitive.
-
-2020-05-22  Jason Merrill  <jason@redhat.com>
-
-       * cp-gimplify.c (cp_gimplify_expr) [CALL_EXPR]: Don't preevaluate
-       the function address if the call used operator syntax.
-
-2020-05-21  Jason Merrill  <jason@redhat.com>
-
-       PR c++/95221
-       * cp-ubsan.c (cp_ubsan_maybe_instrument_member_call): For a virtual
-       call, instrument the OBJ_TYPE_REF.
-
-       * decl.c (compute_array_index_type_loc): Diagnose expressions
-       in a template that can't be constant.
-       * parser.c (cp_parser_direct_declarator): Don't check
-       non-constant array bounds here.
-
-       * cp-tree.h (is_rvalue_constant_expression): Declare.
-       * constexpr.c (is_rvalue_constant_expression): New.
-       * parser.c (cp_parser_constant_expression): Use it.
-       * decl.c (cp_finish_decl): Try to treat a constexpr initializer in a
-       template as constant.
-
-       * typeck.c (build_x_modify_expr): Handle error_mark_node arguments.
-
-       * decl.c (grokparms): Return NULL_TREE if any parms were erroneous.
-
-2020-05-21  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (finish_co_return_stmt): Revert change to use
-       finish_expr_stmt.
-
-2020-05-21  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94038
-       * constexpr.c (constexpr_ctx::uid_sensitive): Remove field.
-       (uid_sensitive_constexpr_evaluation_value): Define.
-       (uid_sensitive_constexpr_evaluation_true_counter): Define.
-       (uid_sensitive_constexpr_evaluation_p): Define.
-       (uid_sensitive_constexpr_evaluation_sentinel): Define its
-       constructor.
-       (uid_sensitive_constexpr_evaluation_checker): Define its
-       constructor and its evaluation_restricted_p method.
-       (get_fundef_copy): Remove 'ctx' parameter.  Use u_s_c_e_p
-       instead of constexpr_ctx::uid_sensitive.
-       (cxx_eval_call_expression): Use u_s_c_e_p instead, and test it
-       last.  Adjust call to get_fundef_copy.
-       (instantiate_cx_fn_r): Test u_s_c_e_p so that we increment the
-       counter if necessary.
-       (cxx_eval_outermost_constant_expr): Remove 'uid_sensitive'
-       parameter.  Adjust function body accordingly.
-       (maybe_constant_value): Remove 'uid_sensitive' parameter and
-       adjust function body accordingly.  Set up a
-       uid_sensitive_constexpr_evaluation_checker, and use it to
-       conditionally update the cv_cache.
-       * cp-gimplify.c (cp_fold): Set up a
-       uid_sensitive_constexpr_evaluation_checker, and use it to
-       conditionally update the fold_cache.
-       * cp-tree.h (maybe_constant_value): Update declaration.
-       (struct uid_sensitive_constexpr_evaluation_sentinel): Define.
-       (struct sensitive_constexpr_evaluation_checker): Define.
-       * expr.c (fold_for_warn): Set up a
-       uid_sensitive_constexpr_evaluation_sentinel before calling
-       the folding subroutines.  Drop all but the first argument to
-       maybe_constant_value.
-
-2020-05-20  Marek Polacek  <polacek@redhat.com>
-
-       DR 2237
-       * parser.c (cp_parser_unqualified_id): Reject simple-template-id as
-       the declarator-id of a destructor.
-       (cp_parser_constructor_declarator_p): Reject simple-template-id as
-       the declarator-id of a constructor.
-
-2020-05-20  Marek Polacek  <polacek@redhat.com>
-
-       DR 2289
-       PR c++/94553
-       * cp-tree.h (SD_DECOMPOSITION): New flag.
-       * decl.c (duplicate_decls): Make sure a structured binding is unique
-       in its declarative region.
-       (start_decl): If INITIALIZED is SD_DECOMPOSITION, call
-       fit_decomposition_lang_decl.
-       (grokdeclarator): Compare INITIALIZED directly to SD_* flags.
-       * parser.c (cp_parser_decomposition_declaration): Pass SD_DECOMPOSITION
-       to start_decl.
-
-2020-05-20  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/95223
-       * typeck.c (structural_comptypes): Don't perform
-       context-dependent resolution of TYPENAME_TYPEs when
-       comparing_specializations.
-
-2020-05-19  Nathan Sidwell  <nathan@acm.org>
-
-       * pt.c (lookup_template_class_1): Do not reinit template_info of an
-       alias here.
-
-2020-05-18  Martin Sebor  <msebor@redhat.com>
-
-       PR c++/94923
-       * call.c ((maybe_warn_class_memaccess): Use is_byte_access_type.
-       * cp-tree.h (is_dummy_object): Return bool.
-       (is_byte_access_type): Declare new function.
-       * tree.c (is_dummy_object): Return bool.
-       (is_byte_access_type): Define new function.
-
-2020-05-19  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/87847
-       * pt.c (init_template_processing): Enable sanitization for
-       decl_specializations and type_specializations.
-
-       PR c++/66439
-       * pt.c (fn_type_unification): Pass 'fn' instead of NULL_TREE as
-       the 'in_decl' parameter to coerce_template_parms.
-
-2020-05-18  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94955
-       * typeck.c (cp_build_binary_op): Use fold_for_warn instead of
-       cp_fold_rvalue.
-
-2020-05-18  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94937
-       * cvt.c (cp_get_fndecl_from_callee): Return NULL_TREE if the function
-       type is not INDIRECT_TYPE_P.
-       * decl.c (omp_declare_variant_finalize_one): Call
-       cp_get_callee_fndecl_nofold instead of looking for the function decl
-       manually.
-
-2020-05-18  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/90915
-       * parser.c (cp_parser_has_attribute_expression): Sorry on a
-       type-dependent argument.
-
-2020-05-18  Marek Polacek  <polacek@redhat.com>
-
-       DR 1512
-       PR c++/87699
-       * call.c (add_builtin_candidate) <case EQ_EXPR>: Create candidate
-       operator functions when type is std::nullptr_t for ==/!=.
-       * typeck.c (composite_pointer_type_r): Add a bool * parameter.  Use it
-       to maybe add "const" to the pointer type.
-       (composite_pointer_type): Update the call to composite_pointer_type_r.
-       (cp_build_binary_op): Turn two warning_at into error_at.  Print the
-       types.
-
-2020-05-18  Jason Merrill  <jason@redhat.com>
-
-       * call.c (build_over_call): Remove unnecessary
-       cp_stabilize_reference.
-
-2020-05-18  Marek Polacek  <polacek@redhat.com>
-
-       * call.c (add_builtin_candidate): Don't create a builtin overload
-       candidate for ++ when type is bool in C++17.
-
-2020-05-18  Marek Polacek  <polacek@redhat.com>
-
-       * cfns.h: Regenerated.
-
-2020-05-17  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (morph_fn_to_coro): Initialize the gro variable.
-
-2020-05-16  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (finish_co_return_stmt): Implement rules
-       from [class.copy.elision] /3.
-
-2020-05-16  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/57943
-       * semantics.c (finish_decltype_type): Call
-       instantiate_non_dependent_expr_sfinae on the expression.
-
-2020-05-15  Patrick Palka  <ppalka@redhat.com>
-
-       Revert:
-
-       2020-04-07  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/90996
-       * typeck2.c (process_init_constructor_array): Propagate
-       CONSTRUCTOR_PLACEHOLDER_BOUNDARY up from each element initializer to
-       the array initializer.
-
-2020-05-15  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93286 - ICE with __is_constructible and variadic template.
-       * pt.c (tsubst_tree_list): New.
-       (tsubst, tsubst_copy_and_build): Use it.
-       * decl2.c (is_late_template_attribute): Handle error_mark_node args.
-
-2020-05-15  Nathan Sidwell  <nathan@acm.org>
-
-       * pt.c (template_args_equal): Fix thinkos in previous 'cleanup'.
-
-2020-05-14  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93901
-       * pt.c (maybe_instantiate_noexcept): Change clone handling.
-
-2020-05-14  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/78446
-       * call.c (build_op_call): Pass complain to lookup_fnfields.
-       (build_special_member_call): Likewise.
-       * class.c (type_requires_array_cookie): Pass tf_warning_or_error
-       to lookup_fnfields.
-       * cp-tree.h (lookup_fnfields): Add tsubst_flags_t parameter.
-       * except.c (build_throw): Pass tf_warning_or_error to
-       lookup_fnfields.
-       * init.c (build_new_1): Pass complain to lookup_fnfields.
-       * method.c (locate_fn_flags): Likewise.
-       * name-lookup.c (lookup_name_real_1): Pass tf_warning_or_error
-       to lookup_fnfields.
-       * pt.c (tsubst_baselink): Pass complain to lookup_fnfields.
-       * search.c (lookup_fnfields): New 'complain' parameter.  Pass it
-       to lookup_member.
-
-2020-05-14  Nathan Sidwell  <nathan@acm.org>
-
-       * parser.c (cp_parser_diagnose_invalid_typename): Mention
-       std=c++20 not 2a, reformat dependent binfo inform loops.
-
-       * pt.c (tsubst_template_decl): Reorder and commonize some control
-       paths.
-
-       * pt.c (tsubst_friend_function): Simplify control flow.
-
-       * pt.c (lookup_template_class_1): Remove unnecessary else by
-       simply grabbing TYPE_NAME earlier.
-
-       * pt.c (push_template_decl_real): Adjust friend pushing logic.
-       Reinit template type.
-
-       * pt.c (build_template_decl): Init DECL_TEMPLATE_RESULT &
-       TREE_TYPE here ...
-       (process_partial_specialization): ... not here ...
-       (push_template_decl_real, add_inherited_template_parms)
-       (build_deduction_guide): ... or here.
-
-2020-05-14  Jakub Jelinek  <jakub@redhat.com>
-
-       * cp-gimplify.c (cp_genericize_r): Set cfun->has_omp_target.
-
-2020-05-13  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/79706
-       * init.c (build_vec_delete_1): Just return error_mark_node if
-       deallocate_expr is error_mark_node.
-       (build_delete): Just return error_mark_node if do_delete is
-       error_mark_node.
-
-2020-05-13  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/95020
-       * constraint.cc (tsubst_requires_expr): Produce a new
-       requires-expression when processing_template_decl, even if
-       template arguments are not dependent.
-
-2020-05-13  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/95066
-       * decl.c (duplicate_decls): Set DECL_HAS_DEPENDENT_EXPLICIT_SPEC_P.
-
-2020-05-13  Nathan Sidwell  <nathan@acm.org>
-
-       * pt.c (template_args_equal): Reorder category checking for
-       clarity.
-
-       * pt.c (perform_typedefs_access_check): Cache expensively
-       calculated object references.
-       (check_auto_in_tmpl_args): Just assert we do not get unexpected
-       nodes, rather than silently do nothing.
-       (append_type_to_template_for_access): Likewise, cache expensie
-       object reference.
-
-       * pt.c (canonical_type_parameter): Simplify.
-
-       Formatting fixups & some simplifications.
-       * pt.c (spec_hash_table): New typedef.
-       (decl_specializations, type_specializations): Use it.
-       (retrieve_specialization): Likewise.
-       (register_specialization): Remove unnecessary casts.
-       (push_template_decl_real): Reformat.
-       (instantiate_class_template_1): Use more RAII.
-       (make_argument_pack): Simplify.
-       (instantiate_template_1): Use gcc_checking_assert for expensive
-       asserts.
-       (instantiate_decl): Likewise.
-       (resolve_typename_type): Reformat comment.
-       * semantics.c (struct deferred_access): Remove unnecessary GTY on
-       member.
-       (begin_class_definition): Fix formatting.
-
-2020-05-13  Jason Merrill  <jason@redhat.com>
-
-       * call.c, class.c, constexpr.c, constraint.cc, decl.c, init.c,
-       lambda.c, lex.c, method.c, name-lookup.c, parser.c, pt.c, tree.c,
-       typeck2.c: Change cxx2a to cxx20.
-
-2020-05-12  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/95074
-       * parser.c (cp_parser_postfix_expression) <case CPP_OPEN_PAREN>: When
-       looking for a block-scope function declaration, look through the whole
-       set, not just the first function in the overload set.
-
-2020-05-12  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/95063
-       * pt.c (tsubst_decl): Deal with DECL_OMP_PRIVATIZED_MEMBER for
-       a bit-field.
-
-2020-05-11  Jason Merrill  <jason@redhat.com>
-
-       Resolve C++20 NB comment CA104
-       * pt.c (determine_specialization): Compare constraints for
-       specialization of member template of class instantiation.
-
-2020-05-11  Jason Merrill  <jason@redhat.com>
-
-       PR c++/92583
-       PR c++/92654
-       * tree.c (cp_walk_subtrees): Stop at typedefs.
-       Handle TYPENAME_TYPE here.
-       * pt.c (find_parameter_packs_r): Not here.
-       (for_each_template_parm_r): Clear *walk_subtrees.
-       * decl2.c (min_vis_r): Look through typedefs.
-
-2020-05-11  Jason Merrill  <jason@redhat.com>
-
-       * call.c (implicit_conversion_error): Split out from...
-       (perform_implicit_conversion_flags): ...here.
-       (build_converted_constant_expr_internal): Use it.
-
-2020-05-11  Jason Merrill  <jason@redhat.com>
-
-       PR c++/90748
-       * parser.c (inject_parm_decls): Set current_class_ptr here.
-       (cp_parser_direct_declarator): And here.
-       (cp_parser_late_return_type_opt): Not here.
-       (cp_parser_noexcept_specification_opt): Nor here.
-       (cp_parser_exception_specification_opt)
-       (cp_parser_late_noexcept_specifier): Remove unneeded parameters.
-
-2020-05-11  Jason Merrill  <jason@redhat.com>
-
-       * decl.c (cxx_init_decl_processing): Call declare_weak for
-       __cxa_pure_virtual.
-
-2020-05-11  Jason Merrill  <jason@redhat.com>
-
-       * pt.c (instantiate_class_template_1): Call tsubst_expr for
-       STATIC_ASSERT member.
-       * ptree.c (cxx_print_xnode): Handle STATIC_ASSERT.
-
-2020-05-11  Jason Merrill  <jason@redhat.com>
-
-       * pt.c (find_parameter_packs_r) [LAMBDA_EXPR]: Remove redundant
-       walking of capture list.
-
-2020-05-11  Jason Merrill  <jason@redhat.com>
-
-       * cp-tree.h (LOOKUP_EXPLICIT_TMPL_ARGS): Remove.
-       * call.c (build_new_function_call): Don't set it.
-       (build_new_method_call_1): Likewise.
-       (build_over_call): Check cand->explicit_targs instead.
-
-2020-05-11  Jason Merrill  <jason@redhat.com>
-
-       * decl.c (compute_array_index_type_loc): Stabilize before building
-       the MINUS_EXPR.
-
-2020-05-11  Jason Merrill  <jason@redhat.com>
-
-       * decl.c (grokdeclarator): Adjust deprecated_state here.
-       (start_decl): Not here.
-
-2020-05-08  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/95003
-       * coroutines.cc (build_actor_fn): Ensure that bind scopes
-       are marked as having side-effects where necessary.
-       (replace_statement_captures): Likewise.
-       (morph_fn_to_coro): Likewise.
-
-2020-05-08  Nathan Sidwell  <nathan@acm.org>
-
-       * NEWS: Delete, it is so stale.
-
-       * parser.c (cp_lexer_set_source_position_from_token): EOF has a
-       location too.
-
-2020-05-07  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/94817
-       PR c++/94829
-       * coroutines.cc (morph_fn_to_coro): Set unformed outline
-       functions to error_mark_node.  For early error returns suppress
-       warnings about missing ramp return values.  Fix reinstatement
-       of the function body on pre-existing initial error.
-       * decl.c (finish_function): Use the normal error path for fails
-       in the ramp function, do not try to compile the helpers if the
-       transform fails.
-
-2020-05-07  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94590 - Detect long double -> double narrowing.
-       * typeck2.c (check_narrowing): Detect long double -> double
-       narrowing even when double and long double have the same
-       precision.  Make it handle conversions to float too.
-
-2020-05-07  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94255
-       * parser.c (cp_parser_class_specifier_1): Check that the scope is
-       nested inside current scope before pushing it.
-
-2020-05-07  Marek Polacek  <polacek@redhat.com>
-
-         P1957R2
-         * typeck2.c (check_narrowing): Consider T* to bool narrowing
-         in C++11 and up.
-
-2020-05-07  Marek Polacek  <polacek@redhat.com>
-
-       * decl.c (grok_op_properties): Fix spelling of non-static.
-       * typeck.c (build_class_member_access_expr): Likewise.
-
-2020-05-07  Richard Biener  <rguenther@suse.de>
-
-       PR middle-end/94703
-       * optimize.c (update_cloned_parm): Copy DECL_NOT_GIMPLE_REG_P.
-
-2020-05-06  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94938
-       * pt.c (tsubst_copy_and_build): Call type_dependent_expression_p_push
-       instead of uses_template_parms.  Move the warning_sentinels after the
-       RECURs.
-
-2020-05-06  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/94951
-       * typeck.c (cp_strict_aliasing_warning): New function.
-       (cp_build_indirect_ref_1, build_reinterpret_cast_1): Use
-       it instead of strict_aliasing_warning.
-
-       PR c++/94907
-       * method.c (defaulted_late_check): Don't call synthesize_method
-       on constexpr sfk_comparison if it has been called on it already.
-
-2020-05-06  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/94946
-       * decl.c (grokdeclarator): Don't splice template attributes in
-       parm context -- they can apply to the parm.
-
-2020-05-05  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc: Remove references to n4849 throughout.
-
-2020-05-05  Jason Merrill  <jason@redhat.com>
-
-       CWG 2235
-       * pt.c (more_specialized_fn): Do consider parms with no deducible
-       template parameters.
-
-2020-05-05  Jason Merrill  <jason@redhat.com>
-
-       PR c++/90212
-       * constexpr.c (potential_constant_expression_1): In a lambda
-       function, consider a captured variable directly.
-
-2020-05-05  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (transform_await_wrapper): Check that we have
-       no unlowered co_yields.
-       (captures_temporary): Likewise.
-       (register_awaits): Likewise.
-
-2020-05-05  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/94807
-       * coroutines.cc (morph_fn_to_coro): Just check for
-       closure_identifier.
-       * pt.c (tsubst_function_decl): Update lambda fn's this_ptr name.
-
-2020-05-05  Marek Polacek  <polacek@redhat.com>
-           Jason Merrill  <jason@redhat.com>
-
-       PR c++/94799
-       * parser.c (cp_parser_postfix_dot_deref_expression): If we have
-       a type-dependent object of class type, stash it to
-       parser->context->object_type.  If the postfix expression doesn't have
-       a type, use typeof.
-       (cp_parser_class_name): Consider object scope too.
-       (cp_parser_lookup_name): Remove code dealing with the case when
-       object_type is unknown_type_node.
-
-2020-05-04  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94038
-       * cp-gimplify.c (cp_fold) <case CALL_EXPR>: Move some variable
-       declarations closer to their uses.  Copy the CALL_EXPR only
-       when one of its arguments has changed.
-       <case TREE_VEC>: Instead of first collecting the folded
-       arguments into a releasing_vec, just make a copy of the TREE_VEC
-       as soon as folding changes one of its arguments.
-
-2020-05-04  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (morph_fn_to_coro): Mark the coro.gro variable
-       as artificial and ignored.
-
-2020-05-04  Nathan Sidwell  <nathan@acm.org>
-
-       pt.c (process_template_parm): Don't walk the template list twice,
-       remember the final node instead.
-       (end_template_parm_list): Refactor.  Comment on why we do a pop
-       and a push.
-
-       PR c++/94827 -- don't save parms in nested requirement
-       * constraint.cc (tsubst_nested_requirement): TYPE directly holds
-       notmalized requirement.
-       (finish_nested_requirement): Don't stash current tpl parms into
-       the requirement.
-       (diagnose_nested_requirement): TYPE directly holds notmalized
-       requirement.
-
-2020-05-01  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/90880
-       * cp-tree.h (check_accessibility_of_qualified_id): Add
-       tsubst_flags_t parameter and change return type to bool.
-       * parser.c (cp_parser_lookup_name): Pass tf_warning_to_error to
-       check_accessibility_of_qualified_id.
-       * pt.c (tsubst_qualified_id): Return error_mark_node if
-       check_accessibility_of_qualified_id returns false.
-       * semantics.c (check_accessibility_of_qualified_id): Add
-       complain parameter.  Pass complain instead of
-       tf_warning_or_error to perform_or_defer_access_check.  Return
-       true unless perform_or_defer_access_check returns false.
-
-2020-05-01  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94885
-       * typeck2.c (process_init_constructor_record): Return PICFLAG_ERRONEOUS
-       if an initializer element was erroneous.
-
-2020-05-01  Jason Merrill  <jason@redhat.com>
-
-       PR c++/90479
-       * init.c (get_nsdmi): Don't push_to_top_level for a local class.
-
-2020-05-01  Jason Merrill  <jason@redhat.com>
-
-       PR c++/91529
-       * decl.c (cp_finish_decl): Also clear TREE_READONLY if
-       -fmerge-all-constants.
-
-2020-05-01  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93822
-       * pt.c (tsubst_decl): Make sure DECL_VALUE_EXPR continues to have
-       the same type as the variable.
-
-2020-04-30  Jason Merrill  <jason@redhat.com>
-           Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/94827
-       * constraint.cc (map_arguments): If ARGS is null, it's a
-       self-mapping of parms.
-       (finish_nested_requirement): Do not pass argified
-       current_template_parms to normalization.
-       (tsubst_nested_requirement): Don't assert no template parms.
-
-2020-04-30  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/94886
-       * coroutines.cc (transform_local_var_uses): Defer walking
-       the DECL_INITIALs of BIND_EXPR vars until all the frame
-       allocations have been made.
-
-2020-04-30  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/94883
-       * coroutines.cc (register_awaits): Update target
-       expressions for awaitable and suspend handle
-       initializers.
-
-2020-04-30  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/94879
-       * coroutines.cc (build_co_await): Account for variables
-       with DECL_VALUE_EXPRs.
-       (captures_temporary): Likewise.
-       (register_awaits): Likewise.
-
-2020-04-29  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94830
-       * pt.c (find_template_parameter_info::parm_list): New field.
-       (keep_template_parm): Use the new field to build up the
-       parameter list here instead of ...
-       (find_template_parameters): ... here.  Return ftpi.parm_list.
-
-2020-04-29  Jakub Jelinek  <jakub@redhat.com>
-
-       PR target/94707
-       * class.c (build_base_field): Set DECL_FIELD_ABI_IGNORED on C++17 empty
-       base artificial FIELD_DECLs.
-       (layout_class_type): Set DECL_FIELD_ABI_IGNORED on empty class
-       field_poverlapping_p FIELD_DECLs.
-
-2020-04-29  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94819
-       * constraint.cc (satisfy_declaration_constraints): Use saved_t
-       instead of t as the key to decl_satisfied_cache.
-
-       PR c++/94808
-       * error.c (print_requires_expression_info): Print the dependent
-       form of the parameter list with its template parameter mapping,
-       rather than printing the substituted form.
-
-2020-04-28  Jason Merrill  <jason@redhat.com>
-
-       PR c++/94583
-       * decl.c (use_eh_spec_block): Check nothrow type after
-       DECL_DEFAULTED_FN.
-       * pt.c (maybe_instantiate_noexcept): Call synthesize_method for
-       DECL_MAYBE_DELETED fns here.
-       * decl2.c (mark_used): Not here.
-       * method.c (get_defaulted_eh_spec): Reject DECL_MAYBE_DELETED here.
-
-2020-04-28  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/94760
-       * coroutines.cc (instantiate_coro_traits): Pass a reference to
-       object type rather than a pointer type for 'this', for method
-       coroutines.
-       (struct param_info): Add a field to hold that the parm is a lambda
-       closure pointer.
-       (morph_fn_to_coro): Check for lambda closure pointers in the
-       args.  Use a reference to *this when building the args list for the
-       promise allocator lookup.
-
-2020-04-28  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/94759
-       * coroutines.cc (coro_promise_type_found_p): Do not
-       exclude non-classes here (this needs to be handled in the
-       coroutine header).
-       (morph_fn_to_coro):  Allow for the case where the coroutine
-       returns void.
-
-2020-04-27  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/94701
-       * coroutines.cc (struct local_var_info): Add fields for static
-       variables and those with DECL_VALUE_EXPR redirection.
-       (transform_local_var_uses): Skip past typedefs and static vars
-       and then account for redirected variables.
-       (register_local_var_uses): Likewise.
-
-2020-04-27  Jason Merrill  <jason@redhat.com>
-
-       PR c++/90750
-       PR c++/79585
-       * decl.c (grokdeclarator): Move dependent attribute to decl.
-       * decl2.c (splice_template_attributes): No longer static.
-
-2020-04-27  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94772
-       * constexpr.c (cxx_eval_call_expression): Don't set new_obj if we're
-       evaluating the target constructor of a delegating constructor.
-       (cxx_eval_store_expression): Don't set TREE_READONLY if the LHS of the
-       INIT_EXPR is '*this'.
-
-2020-04-26  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/90320
-       * call.c (struct conversion): Add copy_init_p.
-       (standard_conversion): Set copy_init_p in ck_base and ck_rvalue
-       if FLAGS demands LOOKUP_ONLYCONVERTING.
-       (convert_like_real) <case ck_base>: If copy_init_p is set, or
-       LOOKUP_ONLYCONVERTING into FLAGS.
-
-2020-04-26  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/94752
-       * coroutines.cc (morph_fn_to_coro): Ensure that
-       unnamed function params have a usable and distinct
-       frame field name.
-
-2020-04-24  Jason Merrill  <jason@redhat.com>
-
-       PR c++/94583
-       * decl.c (redeclaration_error_message): Reject defaulted comparison
-       operator that has been previously declared.
-
-2020-04-25  Patrick Palka  <ppalka@redhat.com>
-
-       * parser.c (cp_parser_diagnose_invalid_type_name): Suggest enabling
-       concepts if the invalid identifier is 'requires'.
-
-2020-04-25  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/94742
-       * semantics.c (finish_call_expr): When looking if all overloads
-       are noreturn, use STRIP_TEMPLATE to look through TEMPLATE_DECLs.
-
-2020-04-24  Martin Liska  <mliska@suse.cz>
-
-       * coroutines.cc: Fix compilation error for release checking
-       where we miss declaration of â€˜coro_body_contains_bind_expr_p’.
-
-2020-04-23  Patrick Palka  <ppalka@redhat.com>
-
-       * tree.c (zero_init_expr_p): Use uses_template_parms instead of
-       dependent_type_p.
-
-       PR c++/94645
-       * pt.c (template_class_depth): Walk into the DECL_FRIEND_CONTEXT of a
-       friend declaration rather than into its CP_DECL_CONTEXT.
-
-2020-04-23 Iain Sandoe <iain@sandoe.co.uk>
-
-       PR c++/94288
-       * coroutines.cc (await_statement_expander): Simplify cases.
-       (struct susp_frame_data): Add fields for truth and/or if
-       cases, rename one field.
-       (analyze_expression_awaits): New.
-       (expand_one_truth_if): New.
-       (add_var_to_bind): New helper.
-       (coro_build_add_if_not_cond_break): New helper.
-       (await_statement_walker): Handle conditional expressions,
-       handle expansion of truth-and/or-if cases.
-       (bind_expr_find_in_subtree): New, checking-only.
-       (coro_body_contains_bind_expr_p): New, checking-only.
-       (morph_fn_to_coro): Ensure that we have a top level bind
-       expression.
-
-2020-04-22  Jonathan Wakely  <jwakely@redhat.com>
-
-       PR translation/94698
-       * class.c (check_field_decls): Change "define" to "declare" in
-       -Weffc++ diagnostics.
-
-2020-04-22  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94719
-       PR c++/94549
-       * constraint.cc (satisfy_declaration_constraints): If the inherited
-       constructor points to an instantiation of a constructor template,
-       remember and use its attached template arguments.
-
-2020-04-22  Jonathan Wakely  <jwakely@redhat.com>
-
-       PR translation/94698
-       * class.c (check_field_decls): Change "override" to "define" in
-       -Weffc++ diagnostics.
-
-2020-04-22 Iain Sandoe <iain@sandoe.co.uk>
-
-       PR c++/94682
-       * coroutines.cc (struct param_info): Add a field to note that
-       the param is 'this'.
-       (morph_fn_to_coro): Convert this to a reference before using it
-       in the promise parameter preview.
-
-2020-04-22  Jason Merrill  <jason@redhat.com>
-
-       PR c++/94546
-       * pt.c (register_parameter_specializations): If the instantiation is
-       still a parameter pack, don't wrap it in a NONTYPE_ARGUMENT_PACK.
-       (tsubst_pack_expansion, tsubst_expr): Adjust.
-
-2020-04-22  Martin Sebor  <msebor@redhat.com>
-           Jason Merrill  <jason@redhat.com>
-
-       PR c++/94510
-       * decl.c (reshape_init_array_1): Avoid stripping redundant trailing
-       zero initializers...
-       * mangle.c (write_expression): ...and handle them here even for
-       pointers to members by calling zero_init_expr_p.
-       * cp-tree.h (zero_init_expr_p): Declare.
-       * tree.c (zero_init_expr_p): Define.
-       (type_initializer_zero_p): Remove.
-       * pt.c (tparm_obj_values): New hash_map.
-       (get_template_parm_object): Store to it.
-       (tparm_object_argument): New.
-
-2020-04-22  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/67825
-       * constraint.cc (diagnose_valid_expression): Check convert_to_void here
-       as well as in tsubst_valid_expression_requirement.
-
-2020-04-21  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94549
-       * constraint.cc (satisfy_declaration_constraints): Don't strip the
-       inherited constructor if it already has template information.
-
-       PR c++/94597
-       * pt.c (any_template_parm_r) <case IDENTIFIER_NODE>: New case.  If this
-       is a conversion operator, visit its TREE_TYPE.
-
-2020-04-21  Nathan Sidwell  <nathan@acm.org>
-
-       * pt.c (tsubst_copy_and_build) [POINTER_PLUS_EXPR]: Check for
-       error_mark_node.
-
-2020-04-21 Iain Sandoe <iain@sandoe.co.uk>
-
-       PR c++/94661
-       * coroutines.cc (morph_fn_to_coro): Simplify return
-       value computation.
-
-2020-04-17  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94592
-       * constexpr.c (cxx_eval_outermost_constant_expr): Return when T is
-       a BRACE_ENCLOSED_INITIALIZER_P.
-       (is_nondependent_constant_expression): Don't check
-       BRACE_ENCLOSED_INITIALIZER_P.
-       (is_nondependent_static_init_expression): Likewise.
-
-2020-04-20  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94628
-       * cp-tree.h (lss_policy::lss_nop): New enumerator.
-       * pt.c (local_specialization_stack::local_specialization_stack): Handle
-       an lss_nop policy.
-       (local_specialization_stack::~local_specialization_stack): Likewise.
-       (tsubst_pack_expansion): Use a local_specialization_stack instead of
-       manually saving and restoring local_specializations.  Conditionally
-       replace local_specializations sooner, before the handling of the
-       unsubstituted_packs case.
-
-2020-04-20  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94505 - bogus -Wparentheses warning with fold-expression.
-       * pt.c (fold_expression): Add warning_sentinel for -Wparentheses
-       before calling build_x_binary_op.
-
-2020-04-20  Marek Polacek  <polacek@redhat.com>
-
-       * coroutines.cc (captures_temporary): Don't assign the result of
-       STRIP_NOPS to the same variable.
-
-2020-04-20  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/94454 - tpl-tpl-parms are not canonicalizable types
-       * pt.c (canonical_type_parameter): Assert not a tpl-tpl-parm.
-       (process_template_parm): tpl-tpl-parms are structural.
-       (rewrite_template_parm): Propagate structuralness.
-
-       PR c++/94454 - Expr pack expansion equality
-       * tree.c (cp_tree_equal) [TEMPLATE_ID_EXPR, default]: Refactor.
-       [EXPR_PACK_EXPANSION]: Add.
-
-       PR c++/94454 Template Argument Hashing
-       * pt.c (iterative_hash_template_arg): Strip nodes as
-       template_args_equal does.
-       [ARGUMENT_PACK_SELECT, TREE_VEC, CONSTRUCTOR]: Refactor.
-       [node_class:TEMPLATE_TEMPLATE_PARM]: Hash by level & index.
-       [node_class:default]: Refactor.
-
-2020-04-18  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94632
-       * tree.c (cp_tree_equal) <case PARM_DECL>: Ignore
-       comparing_specializations if the parameters' contexts are identical.
-
-       PR c++/92187
-       * pt.c (splice_late_return_type): Propagate cv-qualifiers and
-       PLACEHOLDER_TYPE_CONSTRAINTS from the original auto node to the new one.
-
-2020-04-17  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94483
-       * lambda.c (lambda_capture_field_type): Avoid doing auto deduction if
-       the explicit initializer has parameter packs.
-
-       PR c++/88754
-       * parser.c (cp_parser_check_template_parameters): Before issuing a hard
-       error, first try simulating an error instead.
-
-2020-04-17  Jakub Jelinek  <jakub@redhat.com>
-
-       PR other/94629
-       * call.c (build_conditional_expr_1): Remove redundant assignment to
-       arg2.
-
-2020-04-16  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94475
-       * cvt.c (ocp_convert): If the result of scalar_constant_value is
-       erroneous, ignore it and use the original expression.
-
-2020-04-16  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/94571
-       * parser.c (cp_parser_simple_declaration): Fix up a pasto in
-       diagnostics.
-
-2020-04-15  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c/94593
-       * parser.c (cp_parser_pragma) <case PRAGMA_OMP_REQUIRES>: Reject
-       requires directive when not at file or namespace scope.
-
-2020-04-14  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/94359
-       * coroutines.cc (build_actor_fn): Check that the target can
-       support the resume tailcall before mandating it.
-
-2020-04-14  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/85278
-       * cxx-pretty-print.c (cxx_pretty_printer:simple_type_specifier)
-       <case DECLTYPE_TYPE>: Handle DECLTYPE_TYPE here instead of ...
-       (pp_cxx_type_specifier_seq) <case DECLTYPE_TYPE>: ... here.
-       (cxx_pretty_printer::direct_abstract_declarator) <case DECLTYPE_TYPE>:
-       New no-op case.
-
-       PR c++/94034
-       * constexpr.c (replace_result_decl_data): New struct.
-       (replace_result_decl_data_r): New function.
-       (replace_result_decl): New function.
-       (cxx_eval_call_expression): Use it.
-       * tree.c (build_aggr_init_expr): Set the location of the AGGR_INIT_EXPR
-       to that of its initializer.
-
-2020-04-13  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94588
-       * name-lookup.c (check_local_shadow): Add an inform call.
-
-2020-04-13  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94521
-       * error.c (dump_scope): Pass TFF_NO_FUNCTION_ARGUMENTS to
-       dump_function_decl when printing a function template instantiation as a
-       scope.
-
-       PR c++/94470
-       * constexpr.c (get_or_insert_ctor_field): Set default value of parameter
-       'pos_hint' to -1.
-       (cxx_eval_bare_aggregate): Use get_or_insert_ctor_field instead of
-       assuming the the next index belongs at the end of the new CONSTRUCTOR.
-       (cxx_eval_store_expression): Revert PR c++/78572 fix.
-
-2020-04-13  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/94426  lambdas with internal linkage are different to no-linkage
-       * decl2.c (determine_visibility): A lambda's visibility is
-       affected by its extra scope.
-       * pt.c (instantiate_decl): Determine var's visibility before
-       instantiating its initializer.
-       * tree.c (no_linkage_check): Revert code looking at visibility of
-       lambda's extra scope.
-`
-2020-04-10  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/94528
-       * coroutines.cc (co_await_expander): Remove.
-       (expand_one_await_expression): New.
-       (process_one_statement): New.
-       (await_statement_expander): New.
-       (build_actor_fn): Revise to use per-statement expander.
-       (struct susp_frame_data): Reorder and comment.
-       (register_awaits): Factor code.
-       (replace_statement_captures): New, factored from...
-       (maybe_promote_captured_temps):.. here.
-       (await_statement_walker): Revise to process per statement.
-       (morph_fn_to_coro): Use revised susp_frame_data layout.
-
-2020-04-10  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94149
-       * method.c (constructible_expr): In C++20, try using parenthesized
-       initialization of aggregates to determine the result of
-       __is_constructible.
-
-2020-04-10  Bin Cheng  <bin.cheng@linux.alibaba.com>
-
-       * coroutines.cc (co_await_expander): Simplify.
-
-2020-04-09  Jason Merrill  <jason@redhat.com>
-
-       PR c++/94523
-       * constexpr.c (cxx_eval_constant_expression) [VAR_DECL]: Look at
-       ctx->object and ctx->global->values first.
-
-2020-04-09  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93790
-       * call.c (initialize_reference): If the reference binding failed, maybe
-       try initializing from { }.
-       * decl.c (grok_reference_init): For T& t(e), set
-       LOOKUP_AGGREGATE_PAREN_INIT but don't build up a constructor yet.
-
-2020-04-08  Iain Sandoe  <iain@sandoe.co.uk>
-           Jun Ma  <JunMa@linux.alibaba.com>
-
-       * coroutines.cc (maybe_promote_captured_temps): Add a cleanup
-       expression, if needed, to any call from which we promoted
-       temporaries captured by reference.
-
-2020-04-08  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94507 - ICE-on-invalid with lambda template.
-       * pt.c (tsubst_lambda_expr): Cope when tsubst_template_decl or
-       tsubst_function_decl returns error_mark_node.
-
-2020-04-08  Martin Liska  <mliska@suse.cz>
-
-       PR c++/94314
-       * decl.c (duplicate_decls): Duplicate also DECL_IS_REPLACEABLE_OPERATOR.
-       (cxx_init_decl_processing): Mark replaceable all implicitly defined
-       operators.
-
-2020-04-08  Patrick Palka  <ppalka@redhat.com>
-
-       Core issues 1001 and 1322
-       PR c++/92010
-       * pt.c (rebuild_function_or_method_type): Split function out from ...
-       (tsubst_function_type): ... here.
-       (maybe_rebuild_function_decl_type): New function.
-       (tsubst_function_decl): Use it.
-
-2020-04-08  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/94325
-       * decl.c (begin_destructor_body): For CLASSTYPE_VBASECLASSES class
-       dtors, if CLASSTYPE_PRIMARY_BINFO is non-NULL, but not BINFO_VIRTUAL_P,
-       look at CLASSTYPE_PRIMARY_BINFO of its BINFO_TYPE if it is not
-       BINFO_VIRTUAL_P, and so on.
-
-2020-04-08  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94478 - ICE with defaulted comparison operator
-       * method.c (early_check_defaulted_comparison): Give an error when the
-       context is null.
-
-2020-04-08  Tobias Burnus  <tobias@codesourcery.com>
-
-       PR middle-end/94120
-       * paser.c (cp_parser_oacc_declare): Add check that variables
-       are declared in the same scope as the directive.
-
-2020-04-07  Jason Merrill  <jason@redhat.com>
-
-       PR c++/94480
-       * parser.c (cp_parser_requires_expression): Use tentative_firewall.
-
-       PR c++/94481
-       * parser.c (cp_parser_placeholder_type_specifier): Use
-       matching_parens.
-
-2020-04-07  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (maybe_promote_captured_temps): Ensure that
-       reference capture placeholder vars are properly declared.
-
-2020-04-07  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/90996
-       * tree.c (replace_placeholders): Look through all handled components,
-       not just COMPONENT_REFs.
-       * typeck2.c (process_init_constructor_array): Propagate
-       CONSTRUCTOR_PLACEHOLDER_BOUNDARY up from each element initializer to
-       the array initializer.
-
-2020-04-07  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/94512
-       * parser.c (cp_parser_omp_parallel): Set OMP_PARALLEL_COMBINED
-       if cp_parser_omp_master succeeded.
-
-2020-04-06  Jason Merrill  <jason@redhat.com>
-
-       PR c++/94462
-       * decl.c (duplicate_decls): Fix handling of DECL_HIDDEN_FRIEND_P.
-
-2020-04-04  Marek Polacek  <polacek@redhat.com>
-           Jason Merrill  <jason@redhat.com>
-
-       PR c++/94155 - crash in gimplifier with paren init of aggregates.
-       * init.c (build_vec_init): Fill in indexes.
-
-2020-04-04  Jason Merrill  <jason@redhat.com>
-
-       PR c++/91377
-       * mangle.c (write_expression): Skip IMPLICIT_CONV_EXPR.
-
-2020-04-04  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94205
-       PR c++/79937
-       * constexpr.c (struct constexpr_ctx): New field 'parent'.
-       (cxx_eval_bare_aggregate): Propagate CONSTRUCTOR_PLACEHOLDER_BOUNDARY
-       flag from the original constructor to the reduced constructor.
-       (lookup_placeholder): Prefer to return the outermost matching object
-       by recursively calling lookup_placeholder on the 'parent' context,
-       but don't cross CONSTRUCTOR_PLACEHOLDER_BOUNDARY constructors.
-       (cxx_eval_constant_expression): Link the 'ctx' context to the 'new_ctx'
-       context via 'new_ctx.parent' when being expanded without an explicit
-       target.  Don't call replace_placeholders.
-       (cxx_eval_outermost_constant_expr): Initialize 'ctx.parent' to NULL.
-
-       PR c++/94219
-       PR c++/94205
-       * constexpr.c (get_or_insert_ctor_field): Split out (while adding
-       support for VECTOR_TYPEs, and optimizations for the common case)
-       from ...
-       (cxx_eval_store_expression): ... here.  Rename local variable
-       'changed_active_union_member_p' to 'activated_union_member_p'.  Record
-       the sequence of indexes into 'indexes' that yields the subobject we're
-       assigning to.  Record the integer offsets of the constructor indexes
-       we're assigning through into 'index_pos_hints'.  After evaluating the
-       initializer of the store expression, recompute 'valp' using 'indexes'
-       and using 'index_pos_hints' as hints.
-       (cxx_eval_bare_aggregate): Tweak comments.  Use get_or_insert_ctor_field
-       to recompute the constructor_elt pointer we're assigning through after
-       evaluating each initializer.
-
-2020-04-04  Jason Merrill  <jason@redhat.com>
-
-       PR c++/67825
-       * constraint.cc (tsubst_valid_expression_requirement): Call
-       convert_to_void.
-
-2020-04-04  Jason Merrill  <jason@redhat.com>
-
-       PR c++/94453
-       * constexpr.c (maybe_constant_value): Use break_out_target_exprs.
-       * expr.c (mark_use) [VIEW_CONVERT_EXPR]: Don't wrap a TARGET_EXPR in
-       NON_LVALUE_EXPR.
-
-2020-04-04  Jakub Jelinek  <jakub@redhat.com>
-
-       PR debug/94441
-       * parser.c (cp_parser_omp_for_loop): Use
-       protected_set_expr_location_if_unset.
-       * cp-gimplify.c (genericize_if_stmt, genericize_cp_loop): Likewise.
-
-       PR c++/94477
-       * pt.c (tsubst_expr) <case OMP_MASTER>: Clear
-       omp_parallel_combined_clauses.
-
-2020-04-03  Jason Merrill  <jason@redhat.com>
-
-       PR c++/91966
-       * pt.c (complex_pack_expansion_r): New.
-       (complex_alias_template_p): Use it.
-
-2020-03-31  Jason Merrill  <jason@redhat.com>
-
-       PR c++/94205
-       * constexpr.c (cxx_eval_constant_expression) [TARGET_EXPR]: Call
-       replace_placeholders.
-       * typeck2.c (store_init_value): Fix arguments to
-       fold_non_dependent_expr.
-
-2020-03-31  Jason Merrill  <jason@redhat.com>
-
-       * constexpr.c (cxx_eval_constant_expression) [TARGET_EXPR]: Use
-       local variables.
-
-2020-03-30  Jason Merrill  <jason@redhat.com>
-
-       PR c++/90711
-       * tree.c (cp_tree_equal) [CALL_EXPR]: Compare KOENIG_LOOKUP_P.
-       (called_fns_equal): Check DECL_CONTEXT.
-
-2020-03-30  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/94385
-       * semantics.c (add_stmt): Only set STMT_IS_FULL_EXPR_P on trees with
-       STATEMENT_CODE_P code.
-
-2020-03-28  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94306
-       * parser.c (cp_parser_requires_clause_opt): Diagnose and recover from
-       "requires {" when "requires requires {" was probably intended.
-
-       PR c++/94252
-       * constraint.cc (tsubst_compound_requirement): Always suppress errors
-       from type_deducible_p and expression_convertible_p, as they're not
-       substitution errors.
-       (diagnose_atomic_constraint) <case INTEGER_CST>: Remove this case so
-       that we diagnose INTEGER_CST expressions of non-bool type via the
-       default case.
-       * cp-gimplify.c (cp_genericize_r) <case REQUIRES_EXPR>: New case.
-       * parser.c (cp_parser_requires_expression): Always parse the requirement
-       body as if we're processing a template, by temporarily incrementing
-       processing_template_decl.  Afterwards, if we're not actually in a
-       template context, perform semantic processing to diagnose any invalid
-       types and expressions.
-       * pt.c (tsubst_copy_and_build) <case REQUIRES_EXPR>: Remove dead code.
-       * semantics.c (finish_static_assert): Explain an assertion failure
-       when the condition is a REQUIRES_EXPR like we do when it is a concept
-       check.
-
-       * constraint.cc (diagnose_compound_requirement): When diagnosing a
-       compound requirement, maybe replay the satisfaction failure, subject to
-       the current diagnosis depth.
-
-       * constraint.cc (finish_constraint_binary_op): Set the location of EXPR
-       as well as its range, because build_x_binary_op doesn't always do so.
-       (current_constraint_diagnosis_depth): New.
-       (concepts_diagnostics_max_depth_exceeded_p): New.
-       (collect_operands_of_disjunction): New.
-       (satisfy_disjunction): When diagnosing a satisfaction failure, maybe
-       replay each branch of the disjunction, subject to the current diagnosis
-       depth.
-       (diagnose_valid_expression): When diagnosing a satisfaction failure,
-       maybe replay the substitution error, subject to the current diagnosis
-       recursion.
-       (diagnose_valid_type): Likewise.
-       (diagnose_nested_requiremnet): Likewise.
-       (diagnosing_failed_constraint::diagnosing_failed_constraint): Increment
-       current_constraint_diagnosis_depth when diagnosing.
-       (diagnosing_failed_constraint::~diagnosing_failed_constraint): Decrement
-       current_constraint_diagnosis_depth when diagnosing.
-       (diagnosing_failed_constraint::replay_errors_p): New static member
-       function.
-       (diagnose_constraints): Don't diagnose if concepts_diagnostics_max_depth
-       is 0.  Emit a one-off note to increase -fconcepts-diagnostics-depth if
-       the limit was exceeded.
-       * cp-tree.h (diagnosing_failed_constraint::replay_errors_p): Declare.
-
-2020-03-27  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/84733
-       * name-lookup.c (do_pushdecl): Look through cleanp levels.
-
-2020-03-27  Martin Sebor  <msebor@redhat.com>
-
-       PR c++/94078
-       PR c++/93824
-       PR c++/93810
-       * cp-tree.h (most_specialized_partial_spec): Declare.
-       * parser.c (cp_parser_elaborated_type_specifier): Distinguish alias
-       from declarations.
-       (specialization_of): New function.
-       (cp_parser_check_class_key): Move code...
-       (class_decl_loc_t::add): ...to here.  Add parameters.  Avoid issuing
-       -Wredundant-tags on first-time declarations in other declarators.
-       Correct handling of template specializations.
-       (class_decl_loc_t::diag_mismatched_tags): Also expect to be called
-       when -Wredundant-tags is enabled.  Use primary template or partial
-       specialization as the guide for uses of implicit instantiations.
-       * pt.c (most_specialized_partial_spec): Declare extern.
-
-2020-03-27  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/94257
-       * name-lookup.c (push_namespace): Triage ambiguous lookups that
-       contain namespaces.
-
-2020-03-27  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/94326
-       * call.c (set_flags_from_callee): Don't update
-       cp_function_chain->can_throw or current_function_returns_abnormally
-       if cp_unevaluated_operand.
-
-       PR c++/94339
-       * cvt.c (ocp_convert): Handle COMPOUND_EXPR by recursion on the second
-       operand and creating a new COMPOUND_EXPR if anything changed.
-
-2020-03-26  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94336 - template keyword accepted before destructor names.
-       * parser.c (cp_parser_unqualified_id): Give an error when 'template'
-       is followed by a destructor name.
-
-2020-03-27  Patrick Palka  <ppalka@redhat.com>
-
-       * decl.c (compute_array_index_type_loc): Remove redundant
-       type_dependent_expression_p check that is subsumed by
-       value_dependent_expression_p.
-       * decl2.c (is_late_template_attribute): Likewise.
-       * pt.c (uses_template_parms): Likewise.
-       (dependent_template_arg_p): Likewise.
-
-2020-03-26  Marek Polacek  <polacek@redhat.com>
-
-       DR 1710
-       PR c++/94057 - template keyword in a typename-specifier.
-       * parser.c (check_template_keyword_in_nested_name_spec): New.
-       (cp_parser_nested_name_specifier_opt): Implement DR1710, optional
-       'template'.  Call check_template_keyword_in_nested_name_spec.
-       (cp_parser_simple_type_specifier): Assume that a <
-       following a qualified-id in a typename-specifier begins
-       a template argument list.
-
-2020-03-26  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (coro_init_identifiers): Initialize an identifier
-       for the cororoutine handle 'address' method name.
-       (struct coro_aw_data): Add fields to cover the continuations.
-       (co_await_expander): Determine the kind of await_suspend in use.
-       If we have the case that returns a continuation handle, then save
-       this and make the target for 'scope exit without cleanup' be the
-       continuation resume label.
-       (expand_co_awaits): Remove.
-       (struct suspend_point_info): Remove fields that kept the returned
-       await_suspend handle type.
-       (transform_await_expr): Remove code tracking continuation handles.
-       (build_actor_fn): Add the continuation handle as an actor-function
-       scope var.  Build the symmetric transfer continuation point. Call
-       the tree walk for co_await expansion directly, rather than via a 
-       trivial shim function.
-       (register_await_info): Remove fields tracking continuation handles.
-       (get_await_suspend_return_type): Remove.
-       (register_awaits): Remove code tracking continuation handles.
-       (morph_fn_to_coro): Remove code tracking continuation handles.
-
-2020-03-26  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (co_await_expander): If we are expanding the
-       initial await expression, set a boolean flag to show that we
-       have now reached the initial await_resume() method call.
-       (expand_co_awaits): Handle the 'initial await resume called' flag.
-       (build_actor_fn): Insert the initial await expression into the
-       start of the user-authored function-body. Handle the 'initial await
-       resume called' flag.
-       (morph_fn_to_coro): Initialise the 'initial await resume called'
-       flag.  Modify the unhandled exception catch clause to recognise
-       exceptions that occur before the initial await_resume() and re-
-       throw them.
-
-2020-03-26  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/81349
-       * class.c (user_provided_p): Use STRIP_TEMPLATE instead of returning
-       true for all TEMPLATE_DECLs.
-
-       PR c++/94272
-       * cp-gimplify.c (cp_genericize_r): Handle STATEMENT_LIST.
-
-2020-03-25  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94265
-       * parser.c (cp_parser_selection_statement) <case RID_IF>: Invalidate the
-       current condition chain when the if-statement has a non-empty
-       init-statement.
-
-2020-03-25  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/94319
-       * coroutines.cc (captures_temporary): Fix a missing dereference.
-
-2020-03-24  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94190 - wrong no post-decrement operator error in template.
-       * call.c (convert_like_real): Use convert_from_reference on the result.
-
-2020-03-24  Jason Merrill  <jason@redhat.com>
-
-       PR c++/94186
-       * constraint.cc (constraint_satisfaction_value): Repeat noisily on
-       error.
-       (tsubst_nested_requirement): Likewise.
-       (get_constraint_error_location): Allow missing context.
-       (diagnose_atomic_constraint): Diagnose non-bool constraint here.
-       (satisfy_atom): Not here.  Only diagnose non-constant when noisy.
-
-2020-03-24  Jason Merrill  <jason@redhat.com>
-
-       * pt.c (any_template_parm_r): Look into the type of a non-type
-       template parm.
-
-2020-03-24  Jason Merrill  <jason@redhat.com>
-
-       * cp-tree.h (cp_expr): When constructing from an expr and a
-       location, call protected_set_expr_location.
-
-2020-03-23  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/93805
-       * except.c (maybe_noexcept_warning): Add TODO.
-       * method.c (walk_field_subobs): Pass tf_none to expr_noexcept_p.
-
-2020-03-23  nathans  <nathan@acm.org>
-
-       PR c++/94044
-       * tree.c (cp_tree_equal) [SIZEOF_EXPR]: Detect argument pack
-       operand.
-
-2020-03-21  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/94066
-       * constexpr.c (reduced_constant_expression_p) [CONSTRUCTOR]: Properly
-       handle unions without an initializer.
-       (cxx_eval_component_reference): Emit a different diagnostic when the
-       constructor element corresponding to a union member is NULL.
-       (cxx_eval_bare_aggregate): When constructing a union, always set the
-       active union member before evaluating the initializer.  Relax assertion
-       that verifies the index of the constructor element we're initializing
-       hasn't been changed.
-       (cxx_eval_store_expression): Diagnose changing the active union member
-       while the union is in the process of being initialized.  After setting
-       an active union member, clear CONSTRUCTOR_NO_CLEARING on the underlying
-       CONSTRUCTOR.
-       (cxx_eval_constant_expression) [PLACEHOLDER_EXPR]: Don't re-reduce a
-       CONSTRUCTOR returned by lookup_placeholder.
-
-2020-03-20  Patrick Palka  <ppalka@redhat.com>
-
-       * cxx-pretty-print.c (pp_cxx_parameter_mapping): Make extern.  Move
-       the "[with ]" bits to here from ...
-       (pp_cxx_atomic_constraint): ... here.
-       * cxx-pretty-print.h (pp_cxx_parameter_mapping): Declare.
-       * error.c (rebuild_concept_check): Delete.
-       (print_concept_check_info): Print the dependent form of the constraint and the
-       preferably substituted parameter mapping alongside it.
-
-2020-03-19  Jason Merrill  <jason@redhat.com>
-
-       PR c++/94175
-       * cp-gimplify.c (simple_empty_class_p): Look through
-       SIMPLE_TARGET_EXPR_P.
-       (cp_gimplify_expr) [MODIFY_EXPR]: Likewise.
-       [RETURN_EXPR]: Avoid producing 'return *retval;'.
-       * call.c (build_call_a): Strip TARGET_EXPR from empty class arg.
-       * cp-tree.h (SIMPLE_TARGET_EXPR_P): Check that TARGET_EXPR_INITIAL
-       is non-null.
-
-2020-03-19  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/93931
-       * parser.c (cp_parser_omp_var_list_no_open): Call process_outer_var_ref
-       on outer_automatic_var_p decls.
-       * cp-gimplify.c (cxx_omp_disregard_value_expr): Return true also for
-       capture proxy decls.
-
-2020-03-18  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/94147 - mangling of lambdas assigned to globals
-       * parser.c (cp_parser_init_declarator): Namespace-scope variables
-       provide a lambda scope.
-       * tree.c (no_linkage_check): Lambdas with a variable for extra
-       scope have a linkage from the variable.
-
-2020-03-18  Jakub Jelinek  <jakub@redhat.com>
-
-       * constraint.cc (resolve_function_concept_check, subsumes_constraints,
-       strictly_subsumes): Fix up duplicated word issue in a comment.
-       * coroutines.cc (build_init_or_final_await, captures_temporary):
-       Likewise.
-       * logic.cc (dnf_size_r, cnf_size_r): Likewise.
-       * pt.c (append_type_to_template_for_access_check): Likewise.
-
-       PR c++/91759
-       * decl.c (grokfndecl): Restore old diagnostics about deduction
-       guide declared in different scope if in_namespace is NULL_TREE.
-
-2020-03-17  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/90995
-       * parser.c (cp_parser_enum_specifier): Use temp_override for
-       parser->colon_corrects_to_scope_p, replace goto out with return.
-       If scoped enum or enum with underlying type is not followed by
-       { or ;, call cp_parser_commit_to_tentative_parse before calling
-       cp_parser_error and make sure to return error_mark_node instead of
-       NULL_TREE.  Formatting fixes.
-
-2020-03-17  Ville Voutilainen  <ville.voutilainen@gmail.com>
-
-       PR c++/94197
-       * method.c (assignable_expr): Use cp_unevaluated.
-       (is_xible_helper): Push a non-deferred access check for
-       the stub objects created by assignable_expr and constructible_expr.
-
-2020-03-17  Jakub Jelinek  <jakub@redhat.com>
-
-       * pt.c (tsubst): Fix up duplicated word issue in a diagnostic message.
-       (lookup_template_class_1, tsubst_expr): Fix up duplicated word issue
-       in a comment.
-       * parser.c (cp_parser_statement, cp_parser_linkage_specification,
-       cp_parser_placeholder_type_specifier,
-       cp_parser_constraint_requires_parens): Likewise.
-       * name-lookup.c (suggest_alternative_in_explicit_scope): Likewise.
-
-2020-03-15  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (co_await_expander): Fix indentation.
-
-2020-03-14  Jason Merrill  <jason@redhat.com>
-
-       PR c++/92068
-       * pt.c (process_partial_specialization): Error rather than crash on
-       extra pack expansion.
-
-2020-03-14  Jason Merrill  <jason@redhat.com>
-
-       PR c++/92909
-       * pt.c (find_parameter_packs_r): [DECL_EXPR]: Walk
-       DECL_ORIGINAL_TYPE of a typedef.
-
-2020-03-14  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93248
-       * pt.c (build_deduction_guide): Clear cp_unevaluated_operand for
-       substituting DECL_ARGUMENTS.
-
-2020-03-14  Jakub Jelinek  <jakub@redhat.com>
-
-       * logic.cc (formula::formula): Change "a an" to "an" in a comment.
-       * parser.c (cp_debug_parser): Change "a an" to "an" in a string
-       literal.
-
-2020-03-13  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/67960
-       * call.c (build_over_call): Use a warning_sentinel to disable
-       warn_deprecated_decl before calling build_addr_func.
-
-2020-03-12  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/94124
-       * decl.c (reshape_init_array_1): Don't unshare constructor if there
-       aren't any trailing zero elts, otherwise only unshare the first
-       nelts.
-
-2020-03-11  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93907
-       * constraint.cc (tsubst_parameter_mapping): Canonicalize type
-       argument.
-
-2020-03-11  Marek Polacek  <polacek@redhat.com>
-           Jason Merrill  <jason@redhat.com>
-
-       PR c++/94074 - wrong modifying const object error for COMPONENT_REF.
-       * constexpr.c (cref_has_const_field): New function.
-       (modifying_const_object_p): Consider a COMPONENT_REF
-       const only if any of its fields are const.
-       (cxx_eval_store_expression): Mark a CONSTRUCTOR of a const type
-       as readonly after its initialization has been done.
-
-2020-03-10  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94124 - wrong conversion error with non-viable overload.
-       * decl.c (reshape_init_array_1): Unshare a constructor if we
-       stripped trailing zero-initializers.
-
-2020-03-10  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93901
-       * pt.c (maybe_instantiate_noexcept): Always update clones.
-
-2020-03-10  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93596
-       * pt.c (maybe_aggr_guide): Check BRACE_ENCLOSED_INITIALIZER_P.
-
-2020-03-10  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93922
-       PR c++/94041
-       PR c++/52320
-       PR c++/66139
-       * cp-gimplify.c (cp_gimplify_init_expr): Partially revert patch for
-       66139: Don't split_nonconstant_init.  Remove pre_p parameter.
-
-2020-03-09  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/92031 - bogus taking address of rvalue error.
-       PR c++/91465 - ICE with template codes in check_narrowing.
-       PR c++/93870 - wrong error when converting template non-type arg.
-       PR c++/94068 - ICE with template codes in check_narrowing.
-       * call.c (convert_like_real): Return IMPLICIT_CONV_EXPR
-       in a template when not ck_identity and we're dealing with a class.
-       (convert_like_real) <case ck_ref_bind>: Return IMPLICIT_CONV_EXPR
-       in a template if we need a temporary.
-       * decl.c (compute_array_index_type_loc): Remove
-       instantiate_non_dependent_expr_sfinae call.  Call
-       fold_non_dependent_expr instead of maybe_constant_value.
-       (build_explicit_specifier): Don't instantiate or create a sentinel
-       before converting the expression.
-       * except.c (build_noexcept_spec): Likewise.
-       * pt.c (convert_nontype_argument): Don't build IMPLICIT_CONV_EXPR.
-       Set IMPLICIT_CONV_EXPR_NONTYPE_ARG if that's what
-       build_converted_constant_expr returned.
-       * typeck2.c (check_narrowing): Call fold_non_dependent_expr instead
-       of maybe_constant_value.
-
-2020-03-09  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/94067
-       Revert
-       2019-10-11  Paolo Carlini  <paolo.carlini@oracle.com>
-
-       * constexpr.c (cxx_eval_constant_expression): Do not handle
-       RROTATE_EXPR and LROTATE_EXPR.
-
-2020-03-09  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/94050 - ABI issue with alignas on armv7hl.
-       * class.c (layout_class_type): Don't replace a class's
-       CLASSTYPE_AS_BASE if their TYPE_USER_ALIGN don't match.
-
-2020-03-09  Bin Cheng  <bin.cheng@linux.alibaba.com>
-
-       * coroutines.cc (build_actor_fn): Factor out code inserting the
-       default return_void call to...
-       (morph_fn_to_coro): ...here, also hoist local var declarations.
-
-2020-03-08  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/93729
-       * call.c (convert_like_real): Check complain before emitting an error
-       about binding a bit-field to a reference.
-
-       * cxx-pretty-print.c (cxx_pretty_printer::simple_type_specifier)
-       [TYPENAME_TYPE]: Print the TYPENAME_TYPE_FULLNAME instead of the
-       TYPE_NAME.
-
-2020-03-06  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/94027
-       * mangle.c (find_substitution): Don't call same_type_p on template
-       args that cannot match.
-
-2020-03-04  Martin Sebor  <msebor@redhat.com>
-
-       PR c++/90938
-       * tree.c (type_initializer_zero_p): Fail for structs initialized
-       with non-structs.
-
-2020-03-04  Jason Merrill  <jason@redhat.com>
-
-       PR c++/90432
-       * init.c (perform_member_init): Don't do aggregate initialization of
-       empty field.
-       * constexpr.c (cx_check_missing_mem_inits): Don't enforce
-       initialization of empty field.
-
-2020-03-04  Martin Liska  <mliska@suse.cz>
-
-       * method.c: Wrap array in ctor with braces in order
-       to silent clang warnings.
-
-2020-03-03  Jason Merrill  <jason@redhat.com>
-           Marek Polacek  <polacek@redhat.com>
-
-       PR c++/90505 - mismatch in template argument deduction.
-       * pt.c (tsubst): Don't reduce the template level of template
-       parameters when tf_partial.
-
-2020-03-03  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/93998
-       * constexpr.c (cxx_eval_constant_expression)
-       <case TARGET_EXPR, case SAVE_EXPR>: Don't record anything if
-       *non_constant_p is true.
-
-2020-03-03  Jun Ma  <JunMa@linux.alibaba.com>
-
-       * coroutines.cc (captures_temporary): Strip component_ref
-       to its base object.
-
-2020-03-03  Jun Ma  <JunMa@linux.alibaba.com>
-
-       * coroutines.cc (finish_co_await_expr): Build co_await_expr
-       with unknown_type_node.
-       (finish_co_yield_expr): Ditto.
-       *pt.c (type_dependent_expression_p): Set co_await/yield_expr
-       with unknown type as dependent.
-
-2020-03-02  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (struct local_var_info): Adjust to remove the
-       reference to the captured var, and just to note that this is a
-       lambda capture proxy.
-       (transform_local_var_uses): Handle lambda captures specially.
-       (struct param_frame_data): Add a visited set.
-       (register_param_uses): Also check for param uses in lambda
-       capture proxies.
-       (struct local_vars_frame_data): Remove captures list.
-       (register_local_var_uses): Handle lambda capture proxies by
-       noting and bypassing them.
-       (morph_fn_to_coro): Update to remove lifetime extension of
-       lambda capture-by-copy vars.
-
-2020-03-02  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (build_co_await): Do not build frame
-       awaitable proxy vars when the co_await expression is
-       a function parameter or local var.
-       (co_await_expander): Do not initialise a frame var with
-       itself.
-       (transform_await_expr): Only substitute the awaitable
-       frame var if it's needed.
-       (register_awaits): Do not make frame copies for param
-       or local vars that are awaitables.
-
-2020-02-28  Jason Merrill  <jason@redhat.com>
-
-       Implement P2092R0, Disambiguating Nested-Requirements
-       * parser.c (cp_parser_requirement_parameter_list): Pass
-       CP_PARSER_FLAGS_TYPENAME_OPTIONAL.
-
-       * call.c (build_user_type_conversion_1): Don't look at the second
-       conversion of a non-viable candidate.
-
-2020-02-28  Jakub Jelinek  <jakub@redhat.com>
-
-       P1937R2 - Fixing inconsistencies between const{expr,eval} functions
-       * typeck.c (cp_build_addr_expr_1): Allow taking address of immediate
-       functions in unevaluated contexts.
-
-2020-02-27  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/93933
-       * pt.c (template_args_equal): Pass ARGUMENT_PACKS through to
-       cp_tree_equal.
-       * tree.c (cp_tree_equal): Compare ARGUMENT_PACKS here,
-       * typeck.c (comptypes): Assert we don't get any argument packs.
-
-       * class.c (adjust_clone_args): Correct arg-checking assert.
-       * typeck.c (comptypes): Assert not nulls.
-
-2020-02-26  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93789 - ICE with invalid array bounds.
-       * decl.c (compute_array_index_type_loc): Don't use the folded
-       size when folding cleared TREE_CONSTANT.
-
-2020-02-26  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * class.c (classtype_has_non_deleted_copy_ctor): New.
-       * coroutines.cc (struct param_info): Keep track of params
-       that are references, and cache the original type and whether
-       the DTOR is trivial.
-       (build_actor_fn): Handle param copies always, and adjust the
-       handling for references.
-       (register_param_uses): Only handle uses here.
-       (classtype_has_non_deleted_copy_ctor): New.
-       (morph_fn_to_coro): Adjust param copy handling to match n4849
-       by reordering ahead of the promise CTOR and always making a
-       frame copy, even if the param is unused in the coroutine body.
-       * cp-tree.h (classtype_has_non_deleted_copy_ctor): New.
-
-2020-02-26  Patrick Palka  <ppalka@redhat.com>
-
-       * constraint.cc (finish_constraint_binary_op): Set expr's location range
-       to the range of its operands.
-       (satisfy_atom): Pass MAP instead of ARGS to diagnose_atomic_constraint.
-       (diagnose_trait_expr): Take the instantiated parameter mapping MAP
-       instead of the corresponding template arguments ARGS and adjust body
-       accordingly.
-       (diagnose_requires_expr): Likewise.
-       (diagnose_atomic_constraint): Likewise.  When printing an atomic
-       constraint expression, print the instantiated parameter mapping
-       alongside it.
-       * cxx-pretty-print.cc (cxx_pretty_printer::expression)
-       [NONTYPE_ARGUMENT_PACK]: Print braces around a NONTYPE_ARGUMENT_PACK.
-       (cxx_pretty_printer::type_id): Handle TYPE_ARGUMENT_PACK.
-
-2020-02-26  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93676 - value-init crash in template.
-       * init.c (build_new_1): Don't call build_vec_init in a template.
-
-2020-02-26  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93862 - ICE with static_cast when converting from int[].
-       * call.c (reference_compatible_p): No longer static.
-       * cp-tree.h (reference_compatible_p): Declare.
-       * typeck.c (build_static_cast_1): Use reference_compatible_p instead
-       of reference_related_p.
-
-2020-02-26  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93803 - ICE with constexpr init and [[no_unique_address]].
-       * constexpr.c (reduced_constant_expression_p): Don't crash on a null
-       field.
-
-2020-02-24  Martin Sebor  <msebor@redhat.com>
-
-       PR c++/93804
-       * parser.c (cp_parser_check_class_key): Avoid issuing -Wredundant-tags
-       in shared C/C++ code in headers.
-       Remove a duplicate hunk of code.
-
-2020-02-24  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93869 - ICE with -Wmismatched-tags.
-       * parser.c (cp_parser_check_class_key): Check class_key earlier.
-
-2020-02-24  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93712 - ICE with ill-formed array list-initialization.
-       * call.c (next_conversion): Return NULL for ck_aggr.
-       (build_aggr_conv): Set u.expr instead of u.next.
-       (build_array_conv): Likewise.
-       (build_complex_conv): Likewise.
-       (conv_get_original_expr): Handle ck_aggr.
-
-2020-02-24  Jakub Jelinek  <jakub@redhat.com>
-
-       P1937R2 - Fixing inconsistencies between const{expr,eval} functions
-       * call.c (build_over_call): Don't evaluate immediate functions in
-       unevaluated operands.
-
-2020-02-24  Jason Merrill  <jason@redhat.com>
-
-       P0780R2: Resolve lambda init-capture pack grammar.
-       * parser.c (cp_parser_lambda_introducer): Expect &...x=y rather than
-       ...&x=y.
-
-2020-02-22  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93882
-       * decl.c (grokdeclarator): Use %qs in a diagnostic message.
-
-2020-02-21  Martin Sebor  <msebor@redhat.com>
-
-       PR gcov-profile/93753
-       * class.c (check_flexarrays): Tighten up a test for potential members
-       of anonymous structs or unions.
-
-2020-02-20  Martin Sebor  <msebor@redhat.com>
-
-       PR c++/93801
-       * parser.c (cp_parser_check_class_key): Only handle true C++ class-keys.
-
-2020-02-20  Martin Liska  <mliska@suse.cz>
-
-       PR translation/93841
-       * config/or1k/or1k.opt: Remove superfluous word.
-       * doc/invoke.texi: Likewise.
-
-2020-02-20  Martin Liska  <mliska@suse.cz>
-
-       PR translation/93838
-       * parser.c (cp_parser_decl_specifier_seq): Remove trailing space.
-
-2020-02-19  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93169 - wrong-code with a non-constexpr constructor.
-       * constexpr.c (cxx_eval_call_expression): Only set TREE_READONLY
-       on constant CONSTRUCTORs.
-
-2020-02-15  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93710 - poor diagnostic for array initializer.
-       * call.c (build_user_type_conversion_1): Use cp_expr_loc_or_input_loc
-       for an error call.
-
-2020-02-15  Jason Merrill  <jason@redhat.com>
-
-       PR c++/92556
-       * pt.c (any_template_parm_r): Look into lambda body.
-
-       PR c++/92583
-       * pt.c (any_template_parm_r): Remove CONSTRUCTOR handling.
-
-2020-02-14  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/61414
-       * class.c (enum_min_precision): Change prec type from int to int &.
-
-       PR libstdc++/92906
-       * cp-tree.h (enum cp_tree_index): Add CPTI_FALLBACK_DFLOAT32_TYPE,
-       CPTI_FALLBACK_DFLOAT64_TYPE and CPTI_FALLBACK_DFLOAT128_TYPE.
-       (fallback_dfloat32_type, fallback_dfloat64_type,
-       fallback_dfloat128_type): Define.
-       * mangle.c (write_builtin_type): Handle fallback_dfloat*_type like
-       dfloat*_type_node.
-       * rtti.c (emit_support_tinfos): Emit DFP typeinfos even when dfp
-       is disabled for compatibility.
-
-2020-02-13  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93713
-       * name-lookup.c (matching_fn_p): A function does not match a
-       template.
-
-       PR c++/93643
-       PR c++/91476
-       * tree.c (decl_linkage): Always lk_none for locals.
-
-2020-02-12  Jason Merrill  <jason@redhat.com>
-
-       PR c++/92583
-       PR c++/92654
-       * tree.c (cp_walk_subtrees): Walk CONSTRUCTOR types here.
-       * pt.c (find_parameter_packs_r): Not here.
-
-2020-02-12 Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (build_actor_fn): Implement deallocation function
-       selection per n4849, dcl.fct.def.coroutine bullet 12.
-       (morph_fn_to_coro): Implement allocation function selection per
-       n4849, dcl.fct.def.coroutine bullets 9 and 10.
-
-2020-02-12  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93684 - ICE-on-invalid with broken attribute.
-       * parser.c (cp_parser_std_attribute): Peek a token first before
-       consuming it.
-
-2020-02-11  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93675
-       * class.c (add_implicitly_declared_members): Use do_friend.
-       * method.c (implicitly_declare_fn): Fix friend handling.
-       (decl_remember_implicit_trigger_p): New.
-       (synthesize_method): Use it.
-       * decl2.c (mark_used): Use it.
-
-2020-02-11  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93650
-       PR c++/90691
-       * constexpr.c (maybe_constant_value): Correct earlier change.
-       (cxx_eval_binary_expression) [SPACESHIP_EXPR]: Pass lval through.
-       * method.c (genericize_spaceship): Wrap result in TARGET_EXPR.
-
-2020-02-12  Patrick Palka  <ppalka@redhat.com>
-
-       PR c++/69448
-       PR c++/80471
-       * type-utils.h (find_type_usage): Refactor to take a tree * and to
-       return a tree *, and update documentation accordingly.
-       * pt.c (make_auto_1): Set AUTO_IS_DECLTYPE when building a
-       decltype(auto) node.
-       (make_constrained_decltype_auto): No need to explicitly set
-       AUTO_IS_DECLTYPE anymore.
-       (splice_late_return_type): Use find_type_usage to find and
-       replace a possibly nested auto node instead of using is_auto.
-       Check test for is_auto into an assert when deciding whether
-       to late_return_type.
-       (type_uses_auto): Adjust the call to find_type_usage.
-       * parser.c (cp_parser_decltype): No need to explicitly set
-       AUTO_IS_DECLTYPE anymore.
-
-       * error.c (dump_decl) [CONCEPT_DECL]: Use dump_simple_decl.
-       (dump_simple_decl): Handle standard concept definitions as well as
-       variable concept definitions.
-
-2020-02-10  Jakub Jelinek  <jakub@redhat.com>
-
-       PR other/93641
-       * error.c (dump_decl_name): Fix up last argument to strncmp.
-
-2020-02-10  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93618
-       * tree.c (array_of_unknown_bound_p): New.
-       * init.c (perform_member_init): Do nothing for flexible arrays.
-
-2020-02-09  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/93633
-       * constexpr.c (cxx_eval_constant_expression): If obj is heap var with
-       ARRAY_TYPE, use the element type.  Punt if objtype after that is not
-       a class type.
-
-2020-02-08  Jason Merrill  <jason@redhat.com>
-
-       PR c++/90691
-       * expr.c (fold_for_warn): Call maybe_constant_value.
-       * constexpr.c (struct constexpr_ctx): Add uid_sensitive bit-field.
-       (maybe_constant_value): Add uid_sensitive parm.
-       (get_fundef_copy): Don't copy if it's true.
-       (cxx_eval_call_expression): Don't instantiate if it's true.
-       (cxx_eval_outermost_constant_expr): Likewise.
-
-       PR c++/92852
-       * constexpr.c (maybe_constant_value): Don't unshare if the cached
-       value is the same as the argument.
-
-       * typeck.c (maybe_warn_about_returning_address_of_local): Add
-       location parameter.
-
-       * typeck2.c (process_init_constructor): Also clear TREE_SIDE_EFFECTS
-       if appropriate.
-
-2020-02-08  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/93549
-       * constexpr.c (find_array_ctor_elt): If last element has no index,
-       for flag_checking verify all elts have no index.  If i is within the
-       elts, return it directly, if it is right after the last elt, append
-       if NULL index, otherwise force indexes on all elts.
-       (cxx_eval_store_expression): Allow cep->index to be NULL.
-
-2020-02-07  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/92947 - Paren init of aggregates in unevaluated context.
-       * call.c (build_new_method_call_1): Don't check
-       cp_unevaluated_operand.  Check the return value of digest_init.
-
-2020-02-06  Jason Merrill  <jason@redhat.com>
-
-       PR c++/92654
-       * tree.c (cp_walk_subtrees): Walk into type template arguments.
-       * cp-tree.h (TYPE_TEMPLATE_INFO_MAYBE_ALIAS): Use typedef_variant_p
-       instead of TYPE_ALIAS_P.
-       * pt.c (push_template_decl_real): Likewise.
-       (find_parameter_packs_r): Likewise.  Remove dead code.
-       * error.c (find_typenames_r): Remove dead code.
-
-2020-02-06  Jason Merrill  <jason@redhat.com>
-
-       PR c++/92517
-       * parser.c (cp_parser_constraint_primary_expression): Do the main
-       parse non-tentatively.
-
-2020-02-06  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93597 - ICE with lambda in operator function.
-       * name-lookup.c (maybe_save_operator_binding): Check is_overloaded_fn.
-
-2020-02-05  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93140
-       * pt.c (tsubst_decl) [PARM_DECL]: Check cp_unevaluated_operand in
-       handling of TREE_CHAIN for empty pack.
-
-2020-02-05  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/93557
-       * semantics.c (cp_build_vec_convert): Call decay_conversion on arg
-       prior to passing it to c_build_vec_convert.
-
-2020-02-05  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93559 - ICE with CONSTRUCTOR flags verification.
-       * decl.c (reshape_init_array_1): Don't reuse a CONSTRUCTOR with
-       TREE_SIDE_EFFECTS.
-
-2020-02-05  Jason Merrill  <jason@redhat.com>
-
-       PR c++/92593
-       * decl.c (grokdeclarator): Reject field of current class type even
-       in a template.
-
-2020-02-05  Bin Cheng  <bin.cheng@linux.alibaba.com>
-
-       * coroutines.cc (maybe_promote_captured_temps): Increase the index
-       number for temporary variables' name.
-
-2020-02-05  Jun Ma  <JunMa@linux.alibaba.com>
-
-       * coroutines.cc (build_co_await): Call convert_from_reference
-       to wrap co_await_expr with indirect_ref which avoid
-       reference/non-reference type confusion.
-
-       (co_await_expander):  Sink to call_expr if await_resume
-       is wrapped by indirect_ref.
-
-2020-02-04  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93551
-       * constraint.cc (satisfy_declaration_constraints): Check return
-       value of push_tinst_level.
-
-       PR c++/90951
-       * constexpr.c (cxx_eval_array_reference): {}-initialize missing
-       elements instead of value-initializing them.
-
-       PR c++/86917
-       * init.c (perform_member_init): Simplify.
-       * constexpr.c (cx_check_missing_mem_inits): Allow uninitialized
-       flexarray.
-       (cxx_eval_vec_init_1): Handle CONSTRUCTOR.
-
-2020-02-04  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * coroutines.cc (find_promise_type): Delete unused forward
-       declaration.
-       (struct coroutine_info): Add a bool for no promise type error.
-       (coro_promise_type_found_p): Only emit the error for a missing
-       promise once in each affected coroutine.
-
-2020-02-03  Jason Merrill  <jason@redhat.com>
-
-       PR c++/66477
-       * constexpr.c (cxx_eval_constant_expression) [PARM_DECL]: Don't
-       defer loading the value of a reference.
-
-2020-02-03  Jason Merrill  <jason@redhat.com>
-
-       PR c++/91953
-       * constexpr.c (potential_constant_expression_1) [PARM_DECL]: Allow
-       empty class type.
-       [COMPONENT_REF]: A member function reference doesn't use the object
-       as an rvalue.
-
-2020-02-03  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/93458
-       * coroutines.cc (struct coroutine_info): Add a bool flag to note
-       that we emitted an error for a bad function return type.
-       (get_coroutine_info): Tolerate an unset info table in case of
-       missing traits.
-       (find_coro_traits_template_decl): In case of error or if we didn't
-       find a type template, note we emitted the error and suppress
-       duplicates.
-       (find_coro_handle_template_decl): Likewise.
-       (instantiate_coro_traits): Only check for error_mark_node in the
-       return from lookup_qualified_name. 
-       (coro_promise_type_found_p): Reorder initialization so that we check
-       for the traits and their usability before allocation of the info
-       table.  Check for a suitable return type and emit a diagnostic for
-       here instead of relying on the lookup machinery.  This allows the
-       error to have a better location, and means we can suppress multiple
-       copies.
-       (coro_function_valid_p): Re-check for a valid promise (and thus the
-       traits) before proceeding.  Tolerate missing info as a fatal error.
-
-2020-02-03  Jason Merrill  <jason@redhat.com>
-
-       PR c++/88256
-       * cp-gimplify.c (predeclare_vla): New.
-       (cp_genericize_r) [NOP_EXPR]: Call it.
-
-2020-02-03  Jun Ma  <JunMa@linux.alibaba.com>
-
-       * coroutines.cc (transform_await_wrapper): Set actor funcion as
-       new context of label_decl.
-       (build_actor_fn): Fill new field of await_xform_data.
-
-2020-02-02  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93530 - ICE on invalid alignas in a template.
-       * decl.c (grokdeclarator): Call cplus_decl_attributes instead of
-       decl_attributes.
-
-2020-01-31  Jason Merrill  <jason@redhat.com>
-
-       PR c++/86216
-       * semantics.c (process_outer_var_ref): Capture VLAs even in
-       unevaluated context.
-
-       PR c++/14179
-       * decl.c (reshape_init_array_1): Reuse a single CONSTRUCTOR with
-       non-aggregate elements.
-       (reshape_init_array): Add first_initializer_p parm.
-       (reshape_init_r): Change first_initializer_p from bool to tree.
-       (reshape_init): Pass init to it.
-
-       PR c++/14179
-       * parser.c (cp_parser_initializer_list): Suppress location wrappers
-       after 256 elements.
-
-2020-01-29  Jason Merrill  <jason@redhat.com>
-
-       PR c++/82521
-       * pt.c (tsubst_copy_and_build) [EQ_EXPR]: Only suppress warnings if
-       the expression was dependent before substitution.
-
-2020-01-30  Bin Cheng  <bin.cheng@linux.alibaba.com>
-
-       * coroutines.cc (act_des_fn): New.
-       (morph_fn_to_coro): Call act_des_fn to build actor/destroy decls.
-       Access promise via actor function's frame pointer argument.
-       (build_actor_fn, build_destroy_fn): Use frame pointer argument.
-
-2020-01-30  Bin Cheng  <bin.cheng@linux.alibaba.com>
-
-       * coroutines.cc (co_await_expander): Handle type conversion case.
-
-2020-01-29  Jason Merrill  <jason@redhat.com>
-
-       PR c++/90333
-       PR c++/89640
-       PR c++/60503
-       * parser.c (cp_parser_type_specifier_seq): Don't parse attributes in
-       a trailing return type.
-       (cp_parser_lambda_declarator_opt): Parse C++11 attributes before
-       parens.
-
-2020-01-29  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/91754 - Fix template arguments comparison with class NTTP.
-       * pt.c (class_nttp_const_wrapper_p): New.
-       (template_args_equal): See through class_nttp_const_wrapper_p
-       arguments.
-
-2020-01-29  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/92948 - Fix class NTTP with template arguments.
-       * pt.c (convert_nontype_argument): Use IMPLICIT_CONV_EXPR when
-       converting a value-dependent expression to a class type.
-       (tsubst_copy) <case VIEW_CONVERT_EXPR>: Allow IMPLICIT_CONV_EXPR
-       as the result of the tsubst_copy call.
-
-2020-01-29  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/91118
-       * cp-gimplify.c (cxx_omp_predetermined_sharing): Return
-       OMP_CLAUSE_DEFAULT_SHARED for typeinfo decls.
-
-2020-01-28  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93442
-       * parser.c (cp_parser_lambda_expression): Clear in_discarded_stmt.
-
-       PR c++/93477
-       PR c++/91476
-       * decl2.c (copy_linkage): Do copy DECL_ONE_ONLY and DECL_WEAK.
-
-       PR c++/90546
-       * call.c (build_user_type_conversion_1): Allow a template conversion
-       returning an rvalue reference to bind directly to an lvalue.
-
-       PR c++/90731
-       * decl.c (grokdeclarator): Propagate eh spec from typedef.
-
-2020-01-28  Martin Liska  <mliska@suse.cz>
-
-       PR c++/92440
-       * pt.c (redeclare_class_template): Group couple of
-       errors and inform messages with auto_diagnostic_group.
-
-2020-01-28  Martin Liska  <mliska@suse.cz>
-
-       PR c++/92440
-       * pt.c (redeclare_class_template): Use inform
-       for the second location.
-
-2020-01-27  Jason Merrill  <jason@redhat.com>
-
-       PR c++/90966
-       * pt.c (tsubst_copy) [STRING_CST]: Don't use fold_convert.
-
-2020-01-27  Iain Sandoe  <iain@sandoe.co.uk>
-
-       PR c++/93443
-       * coroutines.cc (morph_fn_to_coro): Check the ramp return
-       value when it is constructed from the 'get return object'.
-
-2020-01-27  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/91826
-       * name-lookup.c (is_ancestor): Allow CHILD to be a namespace alias.
-
-2020-01-26  Jason Merrill  <jason@redhat.com>
-
-       PR c++/90992
-       * except.c (maybe_noexcept_warning): Check DECL_IN_SYSTEM_HEADER and
-       temporarily enable -Wsystem-headers.  Change second warning to
-       conditional inform.
-
-       PR c++/90997
-       * semantics.c (finish_call_expr): Don't call
-       instantiate_non_dependent_expr before warn_for_memset.
-
-2020-01-25  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93414 - poor diagnostic for dynamic_cast in constexpr context.
-       * constexpr.c (cxx_eval_dynamic_cast_fn): Add a reference
-       dynamic_cast diagnostic.
-
-2020-01-24  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93400 - ICE with constrained friend.
-       * constraint.cc (maybe_substitute_reqs_for): New.
-       * decl.c (function_requirements_equivalent_p): Call it.
-       * pt.c (tsubst_friend_function): Only substitute
-       TEMPLATE_PARMS_CONSTRAINTS.
-       (tsubst_template_parms): Copy constraints.
-
-2020-01-24  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93279 - ICE with lambda in member operator.
-       * name-lookup.c (maybe_save_operator_binding): Don't remember
-       class-scope bindings.
-
-2020-01-24  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93377 - ICE with member alias in constraint.
-       * pt.c (any_template_parm_r): Look at template arguments for all
-       aliases, not only alias templates.
-
-2020-01-24  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93299 - ICE in tsubst_copy with parenthesized expression.
-       * pt.c (tsubst_copy): Handle a REF_PARENTHESIZED_P VIEW_CONVERT_EXPR.
-
-2020-01-24  Jason Merrill  <jason@redhat.com>
-
-       PR c++/92852 - ICE with generic lambda and reference var.
-       * constexpr.c (maybe_constant_value): Likewise.
-
-2020-01-23  Paolo Carlini  <paolo.carlini@oracle.com>
-
-       PR c++/92804
-       * parser.c (cp_parser_nested_name_specifier_opt): Properly
-       diagnose concept-ids.
-
-2020-01-23  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93331 - ICE with __builtin_strchr.
-       * constexpr.c (cxx_eval_builtin_function_call): Use the original
-       argument if we didn't manage to extract a STRING_CST.
-
-       PR c++/93345 - ICE with defaulted dtor and template.
-       PR c++/33799
-       * decl.c (cxx_maybe_build_cleanup): Don't try to set
-       throwing_cleanup in a template.
-
-2020-01-22  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/92907 - noexcept does not consider "const" in member functions.
-       * g++.dg/cpp0x/noexcept56.C: New test.
-
-2020-01-22  Marek Polacek  <polacek@redhat.com>
-
-       PR c++/93324 - ICE with -Wall on constexpr if.
-       * semantics.c (is_std_constant_evaluated_p): Check fndecl.
-
-2020-01-22  Patrick Palka  <ppalka@redhat.com>
-
-       * constraint.cc (get_mapped_args): Avoid using auto_vec
-       as a vector element.  Release the vectors inside the lists
-       vector.
-       * parser.c (cp_literal_operator_id): Free the buffer.
-
-2020-01-22  Jun Ma  <JunMa@linux.alibaba.com>
-
-       * coroutines.cc (finish_co_await_expr): Add error check on return
-       value of build_co_await.
-       (finish_co_yield_expr,): Ditto.
-
-2020-01-22  Jun Ma  <JunMa@linux.alibaba.com>
-
-       * coroutines.cc (lookup_awaitable_member): Lookup an awaitable member.
-       (lookup_promise_method): Emit diagnostic when get NULL_TREE back only.
-       (build_co_await): Use lookup_awaitable_member instead of lookup_member.
-
-2020-01-21  Jason Merrill  <jason@redhat.com>
-
-       PR c++/60855 - ICE with sizeof VLA capture.
-       * lambda.c (is_lambda_ignored_entity): Don't look past VLA capture.
-
-       PR c++/90732 - ICE with VLA capture and generic lambda.
-       * pt.c (tsubst_lambda_expr): Repeat add_capture for VLAs.
-
-2020-01-21  Iain Sandoe  <iain@sandoe.co.uk>
-           Bin Cheng  <bin.cheng@linux.alibaba.com>
-
-       * coroutines.cc (coro_promise_type_found_p): Check for NULL return
-       from complete_type_or_else.
-       (register_param_uses): Likewise.
-       (build_co_await): Do not try to use complete_type_or_else for void
-       types, otherwise for incomplete types, check for NULL return from
-       complete_type_or_else.
-
-2020-01-21  Jason Merrill  <jason@redhat.com>
-
-       PR c++/91476 - anon-namespace reference temp clash between TUs.
-       * decl2.c (copy_linkage): Factor out of get_guard.
-       * call.c (make_temporary_var_for_ref_to_temp): Use it.
-       * decl.c (cp_finish_decomp): Use it.
-       (cp_finish_decl): determine_visibility sooner.
-
-2020-01-21  Bin Cheng  <bin.cheng@linux.alibaba.com>
-
-       * coroutines.cc (finish_co_await_expr): Set return value flag.
-       (finish_co_yield_expr, morph_fn_to_coro): Ditto.
-
-2020-01-19  Jason Merrill  <jason@redhat.com>
-
-       PR c++/33799 - destroy return value, take 2.
-       * cp-tree.h (current_retval_sentinel): New macro.
-       (struct language_function): Add throwing_cleanup bitfield.
-       * decl.c (cxx_maybe_build_cleanup): Set it.
-       * except.c (maybe_set_retval_sentinel)
-       (maybe_splice_retval_cleanup): New functions.
-       * parser.c (cp_parser_compound_statement): Call
-       maybe_splice_retval_cleanup.
-       * typeck.c (check_return_expr): Call maybe_set_retval_sentinel.
-
-       * parser.c (cp_parser_lambda_body): Use cp_parser_function_body.
-
-2020-01-18  Jakub Jelinek  <jakub@redhat.com>
-
-       * coroutines.cc (get_fn_local_identifier): Fix NO_DOT_IN_LABEL
-       but non-NO_DOLLAR_IN_LABEL case build.
-
-2020-01-18  Iain Sandoe  <iain@sandoe.co.uk>
-
-       * Make-lang.in: Add coroutines.o.
-       * cp-tree.h (lang_decl-fn): coroutine_p, new bit.
-       (DECL_COROUTINE_P): New.
-       * lex.c (init_reswords): Enable keywords when the coroutine flag
-       is set,
-       * operators.def (co_await): New operator.
-       * call.c (add_builtin_candidates): Handle CO_AWAIT_EXPR.
-       (op_error): Likewise.
-       (build_new_op_1): Likewise.
-       (build_new_function_call): Validate coroutine builtin arguments.
-       * constexpr.c (potential_constant_expression_1): Handle
-       CO_AWAIT_EXPR, CO_YIELD_EXPR, CO_RETURN_EXPR.
-       * coroutines.cc: New file.
-       * cp-objcp-common.c (cp_common_init_ts): Add CO_AWAIT_EXPR,
-       CO_YIELD_EXPR, CO_RETRN_EXPR as TS expressions.
-       * cp-tree.def (CO_AWAIT_EXPR, CO_YIELD_EXPR, (CO_RETURN_EXPR): New.
-       * cp-tree.h (coro_validate_builtin_call): New.
-       * decl.c (emit_coro_helper): New.
-       (finish_function): Handle the case when a function is found to
-       be a coroutine, perform the outlining and emit the outlined
-       functions. Set a bit to signal that this is a coroutine component.
-       * parser.c (enum required_token): New enumeration RT_CO_YIELD.
-       (cp_parser_unary_expression): Handle co_await.
-       (cp_parser_assignment_expression): Handle co_yield.
-       (cp_parser_statement): Handle RID_CO_RETURN.
-       (cp_parser_jump_statement): Handle co_return.
-       (cp_parser_operator): Handle co_await operator.
-       (cp_parser_yield_expression): New.
-       (cp_parser_required_error): Handle RT_CO_YIELD.
-       * pt.c (tsubst_copy): Handle CO_AWAIT_EXPR.
-       (tsubst_expr): Handle CO_AWAIT_EXPR, CO_YIELD_EXPR and
-       CO_RETURN_EXPRs.
-       * tree.c (cp_walk_subtrees): Likewise.
-
-2020-01-17  Jason Merrill  <jason@redhat.com>
-
-       PR c++/92531 - ICE with noexcept(lambda).
-       * pt.c (uses_template_parms): Don't try to enumerate all the
-       expression cases.
-
-2020-01-17  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/93228
-       * parser.c (cp_parser_template_name): Look up deprecated attribute
-       in DECL_TEMPLATE_RESULT or its type's attributes.
-
-2020-01-16  Jason Merrill  <jason@redhat.com>
-
-       PR c++/93286 - ICE with __is_constructible and variadic template.
-       * pt.c (tsubst) [TREE_LIST]: Handle pack expansion.
-       (tsubst_copy_and_build) [TRAIT_EXPR]: Always use tsubst for type2.
-
-       PR c++/93280 - ICE with aggregate assignment and DMI.
-       * init.c (get_nsdmi): Set TARGET_EXPR_DIRECT_INIT_P here.
-       * typeck2.c (digest_nsdmi_init): Not here.
-
-2020-01-15  Paolo Carlini  <paolo.carlini@oracle.com>
-
-       PR c++/91073
-       * cp-tree.h (is_constrained_auto): New.
-       * parser.c (cp_parser_maybe_commit_to_declaration): Correctly
-       handle concept-check expressions; take a cp_decl_specifier_seq*
-       instead of a bool.
-       (cp_parser_condition): Update call.
-       (cp_parser_simple_declaration): Likewise.
-       (cp_parser_placeholder_type_specifier): Correctly handle
-       concept-check expressions.
-
-2020-01-15  Jason Merrill  <jason@redhat.com>
-
-       Revert
-       PR c++/33799 - destroy return value if local cleanup throws.
-       * cp-tree.h (current_retval_sentinel): New macro.
-       * decl.c (start_preparsed_function): Set up cleanup for retval.
-       * typeck.c (check_return_expr): Set current_retval_sentinel.
-
-       PR c++/93257 - consteval void function.
-       * constexpr.c (verify_constant): Allow void_node.
-
-       PR c++/92871 - bad code with xvalue and GNU ?: extension.
-       * call.c (prevent_lifetime_extension): New.
-       (build_conditional_expr_1): Use it.
-
-2020-01-14  Nathan Sidwell  <nathan@acm.org>
-
-       PR c++/90916
-       * pt.c (retrieve_specialization): Use get_template_info, not open
-       coding access.
-
-       PR c++/90916
-       * pt.c (retrieve_specialization): Get the TI from the decl or the
-       classtype as appropriate.
-
-2020-01-14  David Malcolm  <dmalcolm@redhat.com>
-
-       * cp-gimplify.c (source_location_table_entry_hash::empty_zero_p):
-       New static constant.
-       * cp-tree.h (named_decl_hash::empty_zero_p): Likewise.
-       (struct named_label_hash::empty_zero_p): Likewise.
-       * decl2.c (mangled_decl_hash::empty_zero_p): Likewise.
-
-2020-01-14  Jason Merrill  <jason@redhat.com>
-
-       PR c++/92590 - wrong handling of inherited default ctor.
-       * class.c (add_method): A constrained inherited ctor doesn't hide an
-       implicit derived ctor.
-       Revert:
-       PR c++/92552 - ICE with inherited constrained default ctor.
-       * pt.c (instantiate_class_template_1): Copy
-       TYPE_HAS_USER_CONSTRUCTOR.
-       PR c++/91930 - ICE with constrained inherited default ctor.
-       * name-lookup.c (do_class_using_decl): Set TYPE_HAS_USER_CONSTRUCTOR
-       for inherited constructor.
-       PR c++/92594 - ICE with inherited trivial default ctor.
-       * method.c (trivial_fn_p): Treat an inherited default constructor
-       like a normal default constructor.
-
-       PR c++/92594 - ICE with inherited trivial default ctor.
-       * method.c (trivial_fn_p): Treat an inherited default constructor
-       like a normal default constructor.
-
-       PR c++/92009 - ICE with punning of typeid.
-       * rtti.c (get_tinfo_desc): Call xref_basetypes.
-       * constexpr.c (cxx_fold_indirect_ref): Don't strip
-       REINTERPRET_CAST_P.
-
-2020-01-13  Jason Merrill  <jason@redhat.com>
-
-       PR c++/92746 - ICE with noexcept of function concept check.
-       * except.c (check_noexcept_r): Handle concept-check.
-
-       PR c++/92582 - ICE with member template as requirement.
-       * pt.c (struct find_template_parameter_info): Add ctx_parms.
-       (any_template_parm_r): Handle TEMPLATE_DECL.
-       (find_template_parameters): Take parms instead of their depth.
-       * constraint.cc (build_parameter_mapping): Pass them.
-
-       PR c++/33799 - destroy return value if local cleanup throws.
-       * cp-tree.h (current_retval_sentinel): New macro.
-       * decl.c (start_preparsed_function): Set up cleanup for retval.
-       * typeck.c (check_return_expr): Set current_retval_sentinel.
-
-       PR c++/93238 - short right-shift with enum.
-       * typeck.c (cp_build_binary_op): Use folded op1 for short_shift.
-
-2020-01-10  Jason Merrill  <jason@redhat.com>
-
-       * typeck.c (cp_build_binary_op): Restore short_shift code.
-
-       PR c++/93143 - incorrect tree sharing with constexpr.
-       * constexpr.c (cxx_eval_outermost_constant_expr): Don't assume
-       CONSTRUCTORs are already unshared.
-
-       PR c++/93173 - incorrect tree sharing.
-       PR c++/93033
-       * cp-gimplify.c (cp_gimplify_init_expr, cp_gimplify_expr): Use
-       copy_if_shared after cp_genericize_tree.
-       * typeck2.c (split_nonconstant_init): Don't unshare here.
-
-2020-01-08  Jason Merrill  <jason@redhat.com>
-
-       * cp-gimplify.c (cp_gimplify_expr) [TARGET_EXPR]: Check
-       TARGET_EXPR_DIRECT_INIT_P.
-       * constexpr.c (cxx_eval_constant_expression): Likewise.
-
-2020-01-08  Jason Merrill  <jason@redhat.com>
-
-       PR c++/91369 - constexpr destructor and member initializer.
-       * constexpr.c (cxx_eval_store_expression): Look through TARGET_EXPR
-       when not preevaluating.
-
-2020-01-08  Jason Merrill  <jason@redhat.com>
-
-       * constexpr.c (cxx_eval_call_expression): Remove DECL_BY_REFERENCE
-       support.
-
-2020-01-07  Paolo Carlini  <paolo.carlini@oracle.com>
-
-       * init.c (build_new): Add location_t parameter and use it throughout.
-       (build_raw_new_expr): Likewise.
-       * parser.c (cp_parser_new_expression): Pass the combined_loc.
-       * pt.c (tsubst_copy_and_build): Adjust call.
-       * cp-tree.h: Update declarations.
-
-2020-01-07  Jason Merrill  <jason@redhat.com>
-
-       PR c++/47877 - -fvisibility-inlines-hidden and member templates.
-       * decl2.c (determine_visibility): -fvisibility-inlines-hidden beats
-       explicit class visibility for a template.
-
-2020-01-07  Richard Sandiford  <richard.sandiford@arm.com>
-
-       * mangle.c (mangle_type_attribute_p): New function, split out from...
-       (write_CV_qualifiers_for_type): ...here.  Don't mangle attributes
-       that contain a space.
-
-2020-01-07  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/91369
-       * constexpr.c (struct constexpr_global_ctx): Add heap_alloc_count
-       member, initialize it to zero in ctor.
-       (cxx_eval_call_expression): Bump heap_dealloc_count when deleting
-       a heap object.  Don't cache calls to functions which allocate some
-       heap objects and don't deallocate them or deallocate some heap
-       objects they didn't allocate.
-
-2020-01-06  Jason Merrill  <jason@redhat.com>
-
-       PR c++/92552 - ICE with inherited constrained default ctor.
-       * pt.c (instantiate_class_template_1): Copy
-       TYPE_HAS_USER_CONSTRUCTOR.
-       * class.c (one_inherited_ctor): Don't set it here.
-
-2020-01-06  Andrew Sutton  <asutton@lock3software.com>
-
-       PR c++/92739 - parsing requires clause with attributes.
-       * parser.c (cp_parser_constraint_requires_parens): Exclude
-       attributes as postfix expressions.
-
-2020-01-05  Jakub Jelinek  <jakub@redhat.com>
-
-       PR c++/93138
-       * parser.c (cp_parser_check_class_key): Disable access checks for the
-       simple name lookup.
-       (cp_parser_maybe_warn_enum_key): Likewise.  Return early if
-       !warn_redundant_tags.
-
-2010-01-05  Jakub Jelinek  <jakub@redhat.com>
+       PR c++/82099
+       * pt.c (resolve_overloaded_unification): Call
+       maybe_instantiate_noexcept after instantiating the function
+       decl.
 
-       PR c++/93046
-       * cp-gimplify.c (cp_gimplify_init_expr): Don't look through
-       TARGET_EXPR if it has been gimplified already.
+2021-01-05  Nathan Sidwell  <nathan@acm.org>
 
-2020-01-03  Jason Merrill  <jason@redhat.com>
+       * parser.c (cp_parser_module_declaration): Alter diagnostic
+       text to say where is permissable.
 
-       PR c++/93033 - incorrect tree node sharing with array init.
-       * typeck2.c (split_nonconstant_init): Unshare non-decl.
-       * cp-gimplify.c (cp_gimplify_init_expr): Only split if -fexceptions.
+2021-01-05  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
-2020-01-02  Jason Merrill  <jason@redhat.com>
+       PR c++/98316
+       * Make-lang.in (cc1plus$(exeext)): Add $(CODYLIB), $(NETLIBS).
 
-       * pt.c (invalid_nontype_parm_type_p): Reject class placeholder in
-       C++17.
+2021-01-02  Jan Hubicka  <jh@suse.cz>
 
-2020-01-02  Jakub Jelinek  <jakub@redhat.com>
+       * cp-tree.h (cp_tree_c_finish_parsing): Declare.
+       * decl2.c (c_parse_final_cleanups): Call cp_tree_c_finish_parsing.
+       * tree.c (cp_tree_c_finish_parsing): New function.
 
-       PR c/90677
-       * cp-objcp-common.c (identifier_global_tag): Return NULL_TREE if name
-       has not been found, rather than error_mark_node.
+2021-01-01  Jakub Jelinek  <jakub@redhat.com>
 
-2020-01-01  Jakub Jelinek  <jakub@redhat.com>
+       * ChangeLog-2020: Rotate ChangeLog.  New file.
 
-       Update copyright years.
 \f
-Copyright (C) 2020 Free Software Foundation, Inc.
+Copyright (C) 2021 Free Software Foundation, Inc.
 
 Copying and distribution of this file, with or without modification,
 are permitted in any medium without royalty provided the copyright