mirror of https://github.com/rust-lang/rust
40 lines
652 B
Rust
40 lines
652 B
Rust
#![allow(dead_code)]
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#![deny(unused_assignments)]
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fn f1(x: &mut isize) {
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*x = 1; // no error
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}
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fn f2() {
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let mut x: isize = 3; //~ ERROR: value assigned to `x` is never read
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x = 4;
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x.clone();
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}
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fn f3() {
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let mut x: isize = 3;
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x.clone();
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x = 4; //~ ERROR: value assigned to `x` is never read
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}
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fn f4(mut x: i32) { //~ ERROR: value passed to `x` is never read
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x = 4;
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x.clone();
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}
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fn f5(mut x: i32) {
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x.clone();
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x = 4; //~ ERROR: value assigned to `x` is never read
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}
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// #22630
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fn f6() {
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let mut done = false;
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while !done {
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done = true; // no error
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continue;
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}
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}
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fn main() {}
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