gcc/testsuite/gcc.target/i386/pr54445-1.c

   1 /* { dg-do run { target tls_runtime } } */
   2 /* { dg-options "-O2" } */
   3 /* { dg-add-options tls } */
   4
   5 __thread unsigned char tls_array[64];
   6
   7 unsigned char
   8 __attribute__ ((noinline))
   9 tls_array_lookup_with_negative_constant(long long int position) {
  10   return tls_array[position - 1];
  11 }
  12
  13 int
  14 main ()
  15 {
  16   int i;
  17
  18   for (i = 0; i < sizeof (tls_array) / sizeof (tls_array[0]); i++)
  19     tls_array[i] = i;
  20
  21   for (i = 0; i < sizeof (tls_array) / sizeof (tls_array[0]); i++)
  22     if (i != tls_array_lookup_with_negative_constant (i + 1))
  23       __builtin_abort ();
  24   return 0;
  25 }