gcc/testsuite/gcc.c-torture/execute/memset-4.c

   1 /* Test to make sure memset of small old size works
   2    correctly. */
   3 #define SIZE 15
   4
   5 void f(char *a) __attribute__((noinline));
   6 void f(char *a)
   7 {
   8   __builtin_memset (a, 0, SIZE);
   9 }
  10
  11
  12 int main(void)
  13 {
  14   int i;
  15   char b[SIZE];
  16   for(i = 0; i < sizeof(b); i++)
  17     {
  18       b[i] = i;
  19     }
  20   f(b);
  21   for(i = 0; i < sizeof(b); i++)
  22     {
  23       if (0 != b[i])
  24         __builtin_abort ();
  25     }
  26   return 0;
  27 }