gcc/testsuite/gcc.dg/ipa/pr114247.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -fsigned-char -fno-strict-aliasing -fwrapv" } */
   3
   4 union a {
   5   unsigned short b;
   6   int c;
   7   signed short d;
   8 };
   9 int e, f = 1, g;
  10 long h;
  11 const int **i;
  12 void j(union a k, int l, unsigned m) {
  13   const int *a[100];
  14   i = &a[0];
  15   h = k.d;
  16 }
  17 static int o(union a k) {
  18   k.d = -1;
  19   while (1)
  20     if (f)
  21       break;
  22   j(k, g, e);
  23   return 0;
  24 }
  25 int main() {
  26   union a n = {1};
  27   o(n);
  28   if (h != -1)
  29     __builtin_abort();
  30   return 0;
  31 }