tests/ui/lint/unused/issue-119383-if-let-guard.rs - toolchain/rustc - Git at Google

 #![feature(if_let_guard)]
 #![deny(unused_variables)]

 fn main() {
     match () {
         () if let Some(b) = Some(()) => {} //~ ERROR unused variable: `b`
         _ => {}
     }
 }
	#![feature(if_let_guard)]
	#![deny(unused_variables)]

	fn main() {
	match () {
	() if let Some(b) = Some(()) => {} //~ ERROR unused variable: `b`
	_ => {}
	}
	}