[Bug gcov-profile/119618] Python PGO vs musttail (error: cannot tail-call: memory reference or volatile after call)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119618

--- Comment #5 from Sam James <sjames at gcc dot gnu.org> ---
This one fails at > -O0 with -g:
```
typedef struct {
} a;

_Bool b();

int *c() {
  if (b())
    return 0;
  {
    a d;
    do
      [[clang::musttail]] return ((int *(*)(int, a *, int, int, int))1)(1, 0,
1,
                                                                        1, 1);
    while (0);
  }
}
```