[Bug c/123429] GCC trunk segfaults while parsing a file-scope __builtin_c23_va_start

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123429

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2026-01-07

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced testcase:
```
typedef __builtin_va_list __gnuc_va_list;
typedef __gnuc_va_list va_list;
__gnuc_va_list t;
int const_1 = __builtin_c23_va_start(t, t);
```