[Bug middle-end/22321] [4.0/4.1 Regression] &volatile_var != &volatile_var is always true

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-07-09 
17:58 -------
This fails also at -O0:
volatile int x;

int main()
{
  if (&x != &x)
   abort ();
  return 0;
}

And this testcase worked in 3.4.x too so this is defintely a fold bug.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|tree-optimization           |middle-end
            Summary|[4.0/4.1 Regression] Wrong  |[4.0/4.1 Regression]
                   |code with SSA dominator     |&volatile_var !=
                   |optimizations               |&volatile_var is always true


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22321