https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114918
--- Comment #3 from Sam James <sjames at gcc dot gnu.org> ---
Reduced (!):
```
typedef struct lispunion *object;
struct lispunion {};
object Icall_gen_error_handler_noreturn() __attribute__((noreturn));
volatile object sLblock;
void(Fblock)(volatile object) { Icall_gen_error_handler_noreturn(); }
```
