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// Issue #50124 - Test warning for unused operator expressions
//@ check-pass
#![warn(unused_must_use)]
#![feature(never_type)]
fn deref_never(x: &!) {
// Don't lint for uninhabited types
*x;
}
fn main() {
let val = 1;
let val_pointer = &val;
// Comparison Operators
val == 1; //~ WARNING unused comparison
val < 1; //~ WARNING unused comparison
val <= 1; //~ WARNING unused comparison
val != 1; //~ WARNING unused comparison
val >= 1; //~ WARNING unused comparison
val > 1; //~ WARNING unused comparison
// Arithmetic Operators
val + 2; //~ WARNING unused arithmetic operation
val - 2; //~ WARNING unused arithmetic operation
val / 2; //~ WARNING unused arithmetic operation
val * 2; //~ WARNING unused arithmetic operation
val % 2; //~ WARNING unused arithmetic operation
// Logical Operators
true && true; //~ WARNING unused logical operation
false || true; //~ WARNING unused logical operation
// Bitwise Operators
5 ^ val; //~ WARNING unused bitwise operation
5 & val; //~ WARNING unused bitwise operation
5 | val; //~ WARNING unused bitwise operation
5 << val; //~ WARNING unused bitwise operation
5 >> val; //~ WARNING unused bitwise operation
// Unary Operators
!val; //~ WARNING unused unary operation
-val; //~ WARNING unused unary operation
*val_pointer; //~ WARNING unused unary operation
if false {
deref_never(&panic!());
}
}
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