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Spurious "unused lifetime parameter" warning with async function #64493

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varkor opened this issue Sep 15, 2019 · 2 comments · Fixed by #64603
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Spurious "unused lifetime parameter" warning with async function #64493

varkor opened this issue Sep 15, 2019 · 2 comments · Fixed by #64603
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A-async-await Area: Async & Await A-lint Area: Lints (warnings about flaws in source code) such as unused_mut. C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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varkor commented Sep 15, 2019 •
edited by rustbot
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#![warn(unused_lifetimes)]

async fn async_fn(&ref mut s: &[i32]) {} //~ WARN lifetime parameter `'_` never used
@varkor varkor added A-lint Area: Lints (warnings about flaws in source code) such as unused_mut. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. C-bug Category: This is a bug. A-async-await Area: Async & Await labels Sep 15, 2019
@varkor varkor mentioned this issue Sep 15, 2019
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This was referenced Sep 17, 2019
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varkor commented Sep 19, 2019

Duplicate of #61115.

@varkor varkor closed this as completed Sep 19, 2019
Centril added a commit to Centril/rust that referenced this issue Oct 15, 2019
@Centril
Rollup merge of rust-lang#64603 - gilescope:unused-lifetime-warning, …
c1f51b6 
…r=matthewjasper

Reducing spurious unused lifetime warnings.

Fixes rust-lang#61115, fixes rust-lang#64493.
tmandry added a commit to tmandry/rust that referenced this issue Oct 15, 2019
@tmandry
Rollup merge of rust-lang#64603 - gilescope:unused-lifetime-warning, …
fcef4b1 
…r=matthewjasper

Reducing spurious unused lifetime warnings.

Fixes rust-lang#61115, fixes rust-lang#64493.
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A-async-await Area: Async & Await A-lint Area: Lints (warnings about flaws in source code) such as unused_mut. C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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Reducing spurious unused lifetime warnings. gilescope/rust
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