[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

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase:
int foo (void);
int bar (void);
int baz (unsigned *);

int
bar (void)
{
  do
    {
      unsigned t;
      int u = baz (&t);
      if (u == 42)
        [[gnu::musttail]] return foo ();
      if (u == -42)
        break;
    }
  while (true);
  return 42;
}