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c++: Various small fixes 

A copy-paste error, a couple of missed checks to guard undefined accesses,
and we don't need to use type_uses_auto to extract the auto node we just
built.

gcc/cp/ChangeLog:

	* coroutines.cc (flatten_await_stmt): Fix copyo.
	* decl.c (reshape_init_class): Simplify.
	* module.cc (module_state::read_language): Add null check.
	* parser.c (build_range_temp): Avoid type_uses_auto.
	(cp_parser_class_specifier_1): Add null check.
This commit is contained in:
Jason Merrill 2021-08-25 15:10:21 -04:00
parent e4cb3bb9ac
commit 9c6344c10d
4 changed files with 10 additions and 12 deletions
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2
gcc/cp/coroutines.cc
View File

@ -2905,7 +2905,7 @@ flatten_await_stmt (var_nest_node *n, hash_set<tree> *promoted,
tree else_cl = COND_EXPR_ELSE (old_expr);
if (!VOID_TYPE_P (TREE_TYPE (else_cl)))
{
gcc_checking_assert (TREE_CODE (then_cl) != STATEMENT_LIST);
gcc_checking_assert (TREE_CODE (else_cl) != STATEMENT_LIST);
else_cl
= build2 (init_expr ? INIT_EXPR : MODIFY_EXPR, var_type,
var, else_cl);

3
gcc/cp/decl.c
View File

@ -6563,8 +6563,7 @@ reshape_init_class (tree type, reshape_iter *d, bool first_initializer_p,
continue_:
if (base_binfo)
{
BINFO_BASE_ITERATE (binfo, ++binfo_idx, base_binfo);
if (base_binfo)
if (BINFO_BASE_ITERATE (binfo, ++binfo_idx, base_binfo))
field = base_binfo;
else
field = next_initializable_field (TYPE_FIELDS (type));

2
gcc/cp/module.cc
View File

@ -17977,7 +17977,7 @@ module_state::read_language (bool outermost)
function_depth++; /* Prevent unexpected GCs. */
if (counts[MSC_entities] != entity_num)
if (ok && counts[MSC_entities] != entity_num)
ok = false;
if (ok && counts[MSC_entities]
&& !read_entities (counts[MSC_entities],

15
gcc/cp/parser.c
View File

@ -13474,17 +13474,15 @@ cp_parser_range_for (cp_parser *parser, tree scope, tree init, tree range_decl,
static tree
build_range_temp (tree range_expr)
{
tree range_type, range_temp;
/* Find out the type deduced by the declaration
`auto &&__range = range_expr'. */
range_type = cp_build_reference_type (make_auto (), true);
range_type = do_auto_deduction (range_type, range_expr,
type_uses_auto (range_type));
tree auto_node = make_auto ();
tree range_type = cp_build_reference_type (auto_node, true);
range_type = do_auto_deduction (range_type, range_expr, auto_node);
/* Create the __range variable. */
range_temp = build_decl (input_location, VAR_DECL, for_range__identifier,
range_type);
tree range_temp = build_decl (input_location, VAR_DECL,
for_range__identifier, range_type);
TREE_USED (range_temp) = 1;
DECL_ARTIFICIAL (range_temp) = 1;
@ -25910,7 +25908,8 @@ cp_parser_class_specifier_1 (cp_parser* parser)
so that maybe_instantiate_noexcept can tsubst the NOEXCEPT_EXPR
in the pattern. */
for (tree i : DEFPARSE_INSTANTIATIONS (def_parse))
DEFERRED_NOEXCEPT_PATTERN (TREE_PURPOSE (i)) = TREE_PURPOSE (spec);
DEFERRED_NOEXCEPT_PATTERN (TREE_PURPOSE (i))
= spec ? TREE_PURPOSE (spec) : error_mark_node;
/* Restore the state of local_variables_forbidden_p. */
parser->local_variables_forbidden_p = local_variables_forbidden_p;