用于进行gcc测试

				/* { dg-do compile } */				/* { dg-options "-O2 -Wstrict-aliasing -fstrict-aliasing" } */												struct S {				  int i;				  float f;				};								int foo () {				  struct S s;				  s.i = 7;				  float* f = &s.f;  /* { dg-bogus "float included in struct S" } */				  *f = 2.0;				  return s.i + (int)s.f;				}