gcc/testsuite/g++.dg/tree-ssa/pr22615.C

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2" } */
   3
   4 /* Ensure that we don't crash when people decide to return the address of padding.  */
   5
   6 struct A
   7 {
   8     char c;
   9       int i;
  10 };
  11
  12 A a;
  13
  14 struct B
  15 {
  16     char c, d;
  17 };
  18
  19 union C
  20 {
  21     A *p;
  22       B *q;
  23
  24         C() : p(&a) {}
  25           char& foo() { return q->d; }
  26 };
  27 void bar() { C().foo() = 0; }
  28