[Bug c/43385] [4.5 Regression] glibc regex testsuite failures

[jakub at gcc dot gnu dot org]

------- Comment #27 from jakub at gcc dot gnu dot org  2010-03-25 06:53 -------
More complete testcase:
/* PR c/43385 */

extern void abort (void);

int e;

__attribute__((noinline, noclone)) void
foo (int x, int y)
{
  if (__builtin_expect (x, 0) && y != 0)
    e++;
}

__attribute__((noinline, noclone)) int
bar (int x, int y)
{
  if (__builtin_expect (x, 0) && y != 0)
    return 1;
  else
    return 0;
}

int
main (void)
{
  int z = 0;
  asm ("" : "+r" (z));
  foo (z + 2, z + 1);
  if (e != 1)
    abort ();
  foo (z + 2, z);
  if (e != 1)
    abort ();
  foo (z + 1, z + 1);
  if (e != 2)
    abort ();
  foo (z + 1, z);
  if (e != 2)
    abort ();
  foo (z, z + 1);
  if (e != 2)
    abort ();
  foo (z, z);
  if (e != 2)
    abort ();
  if (bar (z + 2, z + 1) != 1)
    abort ();
  if (bar (z + 2, z) != 0)
    abort ();
  if (bar (z + 1, z + 1) != 1)
    abort ();
  if (bar (z + 1, z) != 0)
    abort ();
  if (bar (z, z + 1) != 0)
    abort ();
  if (bar (z, z) != 0)
    abort ();
  return 0;
}
this one fails even on x86_64-linux without the patch.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43385