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spurious unused_parens warning #55342

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@programmerjake

The following code produces a unused_parens warning however if the parenthesis around the mut v are removed the code doesn't compile:

pub fn f(v: &u32) -> u32 {
    let &(mut v) = v;
    v += 1;
    v
}

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A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.C-bugCategory: This is a bug.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.

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