[Bug bootstrap/67030] [6 Regression] ARM bootstrap failure due to [-Werror=tautological-compare]

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67030

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Testcase:

#define A a
#define B A
#define FOO (A > B)
int
main ()
{
  int a = 4;
  if (FOO)
    return 5;
}