gcc/testsuite/gcc.dg/torture/pr68963.c

   1 /* { dg-do run } */
   2
   3 static const float a[3] = { 1, 2, 3 };
   4 int b = 3;
   5
   6 __attribute__((noinline, noclone)) void
   7 bar (int x)
   8 {
   9   if (x != b++)
  10     __builtin_abort ();
  11 }
  12
  13 void
  14 foo (float *x, int y)
  15 {
  16   int i;
  17   for (i = 0; i < 2 * y; ++i)
  18     {
  19       if (i < y)
  20         x[i] = a[i];
  21       else
  22         {
  23           bar (i);
  24           x[i] = a[i - y];
  25         }
  26     }
  27 }
  28
  29 int
  30 main ()
  31 {
  32   float x[10];
  33   unsigned int i;
  34   for (i = 0; i < 10; ++i)
  35     x[i] = 1337;
  36   foo (x, 3);
  37   for (i = 0; i < 10; ++i)
  38     if (x[i] != (i < 6 ? (i % 3) + 1 : 1337))
  39       __builtin_abort ();
  40   return 0;
  41 }