clang-tests/gcc-4_2-testsuite/src/g++.dg/warn/Wstrict-aliasing-1.C

/* { dg-do compile } */
/* APPLE LOCAL begin radar 4872051 */
/* { dg-options "-Wstrict-aliasing=2 -O2 -fstrict-aliasing" } */
/* APPLE LOCAL end radar 4872051 */

double x;
int *foo(void)
{
  return (int *)&x; /* { dg-warning "strict-aliasing" } */
}