gcc/testsuite/gcc.dg/torture/pr57864.c

   1 /* { dg-do compile } */
   2
   3 union U {
   4     double val;
   5     union U *ptr;
   6 };
   7
   8 union U *d;
   9 double a;
  10 int b;
  11 int c;
  12
  13 static void fn1(union U *p1, int p2, _Bool p3)
  14 {
  15     union U *e;
  16
  17     if (p2 == 0)
  18         a = ((union U*)((unsigned long)p1 & ~1))->val;
  19
  20     if (b) {
  21         e = p1;
  22     } else if (c) {
  23         e = ((union U*)((unsigned long)p1 & ~1))->ptr;
  24         d = e;
  25     } else {
  26         e = 0;
  27         d = ((union U*)0)->ptr;
  28     }
  29
  30     fn1 (e, 0, 0);
  31     fn1 (0, 0, p3);
  32 }
  33
  34 void fn2 (void)
  35 {
  36   fn1 (0, 0, 0);
  37 }