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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109238

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
  c =3D realloc (p, -1);

...
                        ;
  if (c !=3D=20
          ((void *)0)
              )
    support_exit_failure_impl (1, "tst-realloc.c", 120, "realloc (p, -1)
succeeded.");

  c =3D p;
...

  p =3D realloc (p, 0);=