[Bug middle-end/121389] [15/16 regression] Failed musttail with -fsanitize=address -O0 (error: cannot tail-call: return value changed after call)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121389

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Modified testcase which uses finally_tmp.N from 0 to 5.
int foo (void);
int bar (void);
int baz (unsigned *);

int
bar (void)
{
  for (int a = 0; a < 420; ++a)
    {
      for (int b = 0; b < 420; ++b)
        {
          for (int c = 0; c < 420; ++c)
            {
              unsigned t;
              int u = baz (&t);
              if (u == 42)
                [[gnu::musttail]] return foo ();
              if (u == -42)
                break;
              if (u == 16)
                goto l1;
              if (u == 18)
                goto l2;
              if (u == 20)
                goto l3;
            }
          l3:;
        }
      l2:;
    }
  l1:;
  return 42;
}