linux下编程用 编译软件

				/* { dg-do compile } */				/* { dg-options "-Wstrict-aliasing -O2" } */								int a[2];								double *foo1(void)				{				  return (double *)a; /* { dg-warning "strict-aliasing" } */				}								double *foo2(void)				{				  return (double *)&a[0]; /* { dg-warning "strict-aliasing" } */				}								__complex__ double x;				int *bar(void)				{				  return (int *)&__imag__ x; /* { dg-warning "strict-aliasing" } */				}