rustc: Eliminate a derived error in check::_match #8479
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graydon
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rustc: Eliminate a derived error in check::_match
flip1995
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Mar 14, 2022
Fix some `unnecessary_filter_map` false positives This is a proposed fix for rust-lang#4433. It moves `clone_or_copy_needed` out of `unnecessary_iter_cloned.rs` and into `methods::utils`. It then adds a check of this function to `unnecessary_filter_map::check`. Fixes rust-lang#4433 changelog: none
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r? @graydon or @bblum, whoever gets there first