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
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>
PR c++/96862
* constexpr.c (cxx_eval_outermost_constant_expr): Temporarily disable
flag_rounding_math during manifestly constant evaluation.
2020-09-01 Marek Polacek <polacek@redhat.com>
PR c++/77841
* init.c (build_new_1): Call reshape_init.
2020-09-01 Jakub Jelinek <jakub@redhat.com>
PR c++/96867
* semantics.c (handle_omp_array_sections_1): Test
DECL_ARRAY_PARAMETER_P only on PARM_DECLs.
2020-08-31 Marek Polacek <polacek@redhat.com>
Jason Merrill <jason@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.
2020-08-27 Martin Liska <mliska@suse.cz>
* 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.
2020-08-26 Nathan Sidwell <nathan@acm.org>
* 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.
2020-08-25 Tobias Burnus <tobias@codesourcery.com>
PR c/96678
* semantics.c (handle_omp_array_sections_1): Talk about
array function parameter in the error message.
2020-08-25 Jakub Jelinek <jakub@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.
2020-08-25 Jason Merrill <jason@redhat.com>
PR c++/95428
* optimize.c (populate_clone_array): Revert PR70462 change.
(maybe_clone_body): Likewise.
2020-08-24 Nathan Sidwell <nathan@acm.org>
* ptree.c (debug_overload): New.
2020-08-19 Jason Merrill <jason@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 ‘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++/93046
* cp-gimplify.c (cp_gimplify_init_expr): Don't look through
TARGET_EXPR if it has been gimplified already.
2020-01-03 Jason Merrill <jason@redhat.com>
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.
2020-01-02 Jason Merrill <jason@redhat.com>
* pt.c (invalid_nontype_parm_type_p): Reject class placeholder in
C++17.
2020-01-02 Jakub Jelinek <jakub@redhat.com>
PR c/90677
* cp-objcp-common.c (identifier_global_tag): Return NULL_TREE if name
has not been found, rather than error_mark_node.
2020-01-01 Jakub Jelinek <jakub@redhat.com>
Update copyright years.
Copyright (C) 2020 Free Software Foundation, Inc.
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.