rust/tests/compile-fail/needless_update.rs

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#![feature(plugin)]
#![plugin(clippy)]
#![deny(needless_update)]
2015-10-28 17:50:00 +01:00
#![allow(no_effect)]
struct S {
pub a: i32,
pub b: i32,
}
fn main() {
let base = S { a: 0, b: 0 };
S { ..base }; // no error
S { a: 1, ..base }; // no error
S { a: 1, b: 1, ..base }; //~ERROR struct update has no effect
}