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https://github.com/rust-lang/rust-clippy
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aa8a82ec26
---- UPDATE: add async block into test. FIX: no_effect Fixed asynchronous function parameter names with underscores so that warnings are not displayed when underscores are added to parameter names ADD: test case
50 lines
1.2 KiB
Rust
50 lines
1.2 KiB
Rust
#![warn(clippy::no_effect_underscore_binding)]
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#![no_main]
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trait AsyncTrait {
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async fn bar(i: u64);
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}
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struct Bar;
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impl AsyncTrait for Bar {
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// Shouldn't lint `binding to `_` prefixed variable with no side-effect`
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async fn bar(_i: u64) {
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let _a = 0;
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//~^ ERROR: binding to `_` prefixed variable with no side-effect
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// Shouldn't lint `binding to `_` prefixed variable with no side-effect`
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let _b = num();
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let _ = async {
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let _c = 0;
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//~^ ERROR: binding to `_` prefixed variable with no side-effect
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// Shouldn't lint `binding to `_` prefixed variable with no side-effect`
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let _d = num();
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}
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.await;
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}
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}
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// Shouldn't lint `binding to `_` prefixed variable with no side-effect`
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async fn foo(_i: u64) {
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let _a = 0;
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//~^ ERROR: binding to `_` prefixed variable with no side-effect
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// Shouldn't lint `binding to `_` prefixed variable with no side-effect`
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let _b = num();
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let _ = async {
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let _c = 0;
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//~^ ERROR: binding to `_` prefixed variable with no side-effect
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// Shouldn't lint `binding to `_` prefixed variable with no side-effect`
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let _d = num();
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}
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.await;
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}
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fn num() -> usize {
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0
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}
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