tests/ui/consts/const-call.rs - toolchain/rustc - Git at Google

 fn f(x: usize) -> usize {
     x
 }

 fn main() {
     let _ = [0; f(2)];
     //~^ ERROR cannot call non-const fn
 }
	fn f(x: usize) -> usize {
	x
	}

	fn main() {
	let _ = [0; f(2)];
	//~^ ERROR cannot call non-const fn
	}