[Bug middle-end/91267] [10 regression] SEGV in value_range_base::equal_p

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91267

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-07-28
                 CC|                            |jakub at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Slightly cleaned up testcase for -O3:
void bar (void);
void baz (int);
char *qux (void);
int a, b;

void
foo (int f, char *d)
{
  char *e;
  while (d)
    {
      if (f)
        if (e)
          bar ();
      baz (e - (d + a));
      b = e - d;
      d = qux ();
    }
}

Indeed, started with r273792.