tests/ui/invalid/invalid-path-in-const.rs - toolchain/rustc - Git at Google

 fn main() {
     fn f(a: [u8; u32::DOESNOTEXIST]) {}
     //~^ ERROR no associated item named `DOESNOTEXIST` found for type `u32`
 }
	fn main() {
	fn f(a: [u8; u32::DOESNOTEXIST]) {}
	//~^ ERROR no associated item named `DOESNOTEXIST` found for type `u32`
	}