gcc/testsuite/g++.dg/warn/Wstrict-aliasing-bogus-base-derived.C

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -Wstrict-aliasing -fstrict-aliasing" } */
   3
   4
   5 class base {
   6  public:
   7   int x;
   8 };
   9
  10 class derived: public base {
  11  public:
  12   int y;
  13 };
  14
  15 base foo () {
  16   derived d;
  17   base* pb = &d;  /* { dg-bogus "base vs. derived" } */
  18   pb->x = 1;
  19
  20   return d;
  21 }