gcc/testsuite/gcc.dg/torture/20211118-1.c

   1 /* { dg-do run } */
   2
   3 unsigned p[3];
   4 void __attribute__((noipa))
   5 bar (float *q, int n, int m)
   6 {
   7   for (int i = 0; i < m; ++i)
   8     {
   9       if (i == n)
  10         {
  11           unsigned a = p[1];
  12           p[1] = a + 1;
  13           *q = 1.;
  14         }
  15       q++;
  16     }
  17 }
  18
  19 int main()
  20 {
  21 #if __SIZEOF_FLOAT__ == __SIZEOF_INT__
  22   bar ((float *)p, 1, 3);
  23   if (((float *)p)[1] != 1.)
  24     __builtin_abort ();
  25 #endif
  26   return 0;
  27 }