https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105229
Bug ID: 105229
Summary: [11/12 Regression] ICE in lookup_template_class_1, at
cp/pt.cc:10111
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
Started between 20200503 and 20200510 :
$ cat z1.cc
template <typename> void bar ()
{
[] <int> {}.operator () <> ();
}
void foo ()
{
bar<int> ();
}
$ g++-12-20220410 -c z1.cc
z1.cc: In instantiation of 'void bar() [with <template-parameter-1-1> = int]':
z1.cc:7:12: required from here
z1.cc:3:28: internal compiler error: in lookup_template_class_1, at
cp/pt.cc:10111
3 | [] <int> {}.operator () <> ();
| ~~~~~~~~~~~~~~~~~~~~~~~~~^
0x990981 lookup_template_class_1
../../gcc/cp/pt.cc:10111
0x990981 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
../../gcc/cp/pt.cc:10350
0x990cb2 tsubst_aggr_type
../../gcc/cp/pt.cc:13738
0x97a962 tsubst(tree_node*, tree_node*, int, tree_node*)
../../gcc/cp/pt.cc:15649
0x9a717b tsubst_baselink
../../gcc/cp/pt.cc:16453
0x976d2b tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/cp/pt.cc:21028
0x975385 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/cp/pt.cc:20658
0x99b274 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/cp/pt.cc:19473
0x99918d tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/cp/pt.cc:18486
0x999b9f tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/cp/pt.cc:18458
0x99b233 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/cp/pt.cc:18815
0x97f679 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/cp/pt.cc:18444
0x97f679 instantiate_body
../../gcc/cp/pt.cc:26393
0x980da7 instantiate_decl(tree_node*, bool, bool)
../../gcc/cp/pt.cc:26685
0x9c780b instantiate_pending_templates(int)
../../gcc/cp/pt.cc:26764
0x8281e6 c_parse_final_cleanups()
../../gcc/cp/decl2.cc:5113
