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/* PR rtl-optimization/27671.
   The combiner used to simplify "a ^ b == a" to "a" via
   simplify_relational_operation_1 in simplify-rtx.c.  */
 
extern void abort (void) __attribute__ ((noreturn));
extern void exit (int) __attribute__ ((noreturn));
 
static int __attribute__((noinline))
foo (int a, int b)
{
  int c = a ^ b;
  if (c == a)
    abort ();
}
 
int
main (void)
{
  foo (0, 1);
  exit (0);
}