gcc/testsuite/gcc.dg/pr110080.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 void foo(void);
   5 static unsigned char a = 131;
   6 static int *b;
   7 static int **c = &b;
   8 static void d(int e, unsigned f) {
   9     int *g;
  10     if (f != 131) {
  11         __builtin_unreachable();
  12     }
  13     if (!e){
  14         for (; a; ++a)
  15             for (e = 0; 0;)
  16                 ;
  17         g = &e;
  18         int **h = &g;
  19         if (**h) {
  20             foo();
  21         }
  22     }
  23     *c = &e;
  24 }
  25 int main() { d(4 & a, a); }
  26
  27 /* { dg-final { scan-tree-dump-not "foo" "optimized" } } */