gcc/testsuite/c-c++-common/torture/pr87248.c

   1 /* PR middle-end/87248 */
   2 /* { dg-do run } */
   3
   4 void
   5 foo (signed char *p, int q)
   6 {
   7   *p = q & (-__SCHAR_MAX__ - 1) ? (-__SCHAR_MAX__ - 1) : 0;
   8 }
   9
  10 int
  11 bar (long long x)
  12 {
  13   return x & (-__INT_MAX__ - 1) ? (-__INT_MAX__ - 1) : 0;
  14 }
  15
  16 int
  17 main ()
  18 {
  19 #if __INT_MAX__ > 4 * __SCHAR_MAX__
  20   signed char a[4];
  21   foo (a, __SCHAR_MAX__ + 1U);
  22   foo (a + 1, 2 * (__SCHAR_MAX__ + 1U));
  23   foo (a + 2, -__INT_MAX__ - 1);
  24   foo (a + 3, (__SCHAR_MAX__ + 1U) / 2);
  25   if (a[0] != (-__SCHAR_MAX__ - 1) || a[1] != a[0] || a[2] != a[0] || a[3] != 0)
  26     __builtin_abort ();
  27 #endif
  28 #if __LONG_LONG_MAX__ > 4 * __INT_MAX__
  29   if (bar (__INT_MAX__ + 1LL) != (-__INT_MAX__ - 1)
  30       || bar (2 * (__INT_MAX__ + 1LL)) != (-__INT_MAX__ - 1)
  31       || bar (-__LONG_LONG_MAX__ - 1) != (-__INT_MAX__ - 1)
  32       || bar ((__INT_MAX__ + 1LL) / 2) != 0)
  33     __builtin_abort ();
  34 #endif
  35   return 0;
  36 }