rust/tests/ui/lint/unused/unused-parens-issue-106413.rs

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//@ check-pass
#![warn(unused_parens)]
fn id<T>(t: T) -> T { t }
fn main() {
// This should not warn
let _ = 1 as (i32) < 2;
let _ = id(1 as (i32) < 2);
let _ = id(1 as i32)
as (i32) < 2;
// These should warn
let _ = 1 as ((i32)) < 2; //~WARN unnecessary parentheses
let _ = 1 as (i32); //~WARN unnecessary parentheses
let _ = 1 as (i32) > 2; //~WARN unnecessary parentheses
let _ = id(1 as (i32)) //~WARN unnecessary parentheses
as (i32) < 2;
let _ = id(1 as (i32)) < 2; //~WARN unnecessary parentheses
// This should not warn
let _ = 1 as (i32) << 2;
let _ = id(1 as (i32) << 2);
let _ = id(1 as i32)
as (i32) << 2;
// These should warn
let _ = 1 as ((i32)) << 2; //~WARN unnecessary parentheses
let _ = 1 as (i32); //~WARN unnecessary parentheses
let _ = 1 as (i32) >> 2; //~WARN unnecessary parentheses
let _ = id(1 as (i32)) //~WARN unnecessary parentheses
as (i32) << 2;
let _ = id(1 as (i32)) << 2; //~WARN unnecessary parentheses
}