https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102931
Bug ID: 102931
Summary: ICE explicit lambda call operator without template
keyword
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: johelegp at gmail dot com
CC: johelegp at gmail dot com
Target Milestone: ---
See https://godbolt.org/z/8GGoqr9z3.
```C++
template<class T> void f() {
[]<class>() {
}.operator()<T>();
}
int main() {
f<int>();
}
```
```
<source>: In instantiation of 'void f() [with T = int]':
<source>:7:9: required from here
<source>:4:17: internal compiler error: in lookup_template_class_1, at
cp/pt.c:10017
2 | []<class>() {
| ~~~~~~~~~~~~~
3 |
|
4 | }.operator()<T>();
| ~~~~~~~~~~~~~~^
0x1ffe519 internal_error(char const*, ...)
???:0
0x7d6f1b fancy_abort(char const*, int, char const*)
???:0
0xa54df1 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
???:0
0xa4005d tsubst(tree_node*, tree_node*, int, tree_node*)
???:0
0xa45fc7 instantiate_decl(tree_node*, bool, bool)
???:0
0xa88b1b instantiate_pending_templates(int)
???:0
0x8edf99 c_parse_final_cleanups()
???:0
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 1
```
