src/test/ui/error-codes/E0395.rs - third_party/rust - Git at Google

 static FOO: i32 = 42;
 static BAR: i32 = 42;

 static BAZ: bool = unsafe { (&FOO as *const i32) == (&BAR as *const i32) };
 //~^ ERROR pointers cannot be reliably compared during const eval

 fn main() {
 }
	static FOO: i32 = 42;
	static BAR: i32 = 42;

	static BAZ: bool = unsafe { (&FOO as const i32) == (&BAR as const i32) };
	//~^ ERROR pointers cannot be reliably compared during const eval

	fn main() {
	}