gcc/testsuite/gcc.dg/pr47383.c

   1 /* { dg-do run { target fpic } } */
   2 /* { dg-options "-O2 -fPIC" } */
   3
   4 static int heap[2*(256 +1+29)+1];
   5 static int heap_len;
   6 static int heap_max;
   7 void
   8 __attribute__ ((noinline))
   9 foo (int elems)
  10 {
  11   int n, m;
  12   int max_code = -1;
  13   int node = elems;
  14   heap_len = 0, heap_max = (2*(256 +1+29)+1);
  15   for (n = 0; n < elems; n++)
  16     heap[++heap_len] = max_code = n;
  17   do {
  18     n = heap[1];
  19     heap[1] = heap[heap_len--];
  20     m = heap[1];
  21     heap[--heap_max] = n;
  22     heap[--heap_max] = m;
  23   } while (heap_len >= 2);
  24 }
  25
  26 int
  27 main ()
  28 {
  29   foo (286);
  30   return 0;
  31 }