https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120311
Bug ID: 120311
Summary: internal compiler error: in lookup_base, at
cp/search.cc:251
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mario.rodriguezb1 at um dot es
Target Milestone: ---
ICE internal compiler error: in lookup_base, at cp/search.cc:251 since g++ 4.6.
It only occurs in c++ not in c although it uses no libraries.
```
int main(int argc, char *argv[])
{
int x = ((struct {
struct {
char c;
};
}) {0}).c;
}
```
```
<source>:7:12: internal compiler error: in lookup_base, at cp/search.cc:251
7 | }) {0}).c;
| ^
0x2943295 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
???:0
0x2961006 internal_error(char const*, ...)
???:0
0xad8afe fancy_abort(char const*, int, char const*)
???:0
0xdd2527 build_class_member_access_expr(cp_expr, tree_node*, tree_node*, bool,
int)
???:0
0xddba82 finish_class_member_access_expr(cp_expr, tree_node*, bool, int)
???:0
0xcfced3 c_parse_file()
???:0
0xe5f9d9 c_common_parse_file()
???:0
```
To reproduce:
https://godbolt.org/z/3aWbsnjrK
```
