view gcc/testsuite/g++.dg/warn/Wstrict-aliasing-bogus-union.C @ 131:84e7813d76e9

gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children
line wrap: on
line source

/* { dg-do compile } */
/* { dg-options "-O2 -Wstrict-aliasing -fstrict-aliasing" } */


union U {
  int i;
  float f;
};

float foo () {
  union U u;
  float* f = &u.f;  /* { dg-bogus "unions are holy in GCC" } */
  u.i = 2;
  return *f;
}