Remove a useless ref/id/ref round-trip from pattern_from_hir
#129196
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This re-lookup of `&hir::Pat` by its ID appears to be an artifact of earlier complexity that has since been removed from the compiler.
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r? @Nadrieril rustbot has assigned @Nadrieril. Use |
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Yeah, I agree that it's correct to use @bors r+ rollup |
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…iaskrgr Rollup of 6 pull requests Successful merges: - rust-lang#128989 (Emit an error for invalid use of the linkage attribute) - rust-lang#129167 (mir/pretty: use `Option` instead of `Either<Once, Empty>`) - rust-lang#129168 (Return correct HirId when finding body owner in diagnostics) - rust-lang#129191 (rustdoc-json: Clean up serialization and printing.) - rust-lang#129192 (Remove useless attributes in merged doctest generated code) - rust-lang#129196 (Remove a useless ref/id/ref round-trip from `pattern_from_hir`) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#129196 - Zalathar:ref-id-ref, r=compiler-errors Remove a useless ref/id/ref round-trip from `pattern_from_hir` This re-lookup of `&hir::Pat` by its ID appears to be an artifact of earlier complexity that has since been removed from the compiler. Merely deleting the let/match results in borrow errors, but sprinkling `'tcx` in the signature allows it to work again, so I suspect that this code's current function is simply to compensate for overly loose lifetimes in the signature. Perhaps it made more sense at a time when HIR lifetimes were not tied to `'tcx`. I spotted this while working on some more experimental changes, which is why I've extracted it into its own PR.
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This re-lookup of
&hir::Patby its ID appears to be an artifact of earlier complexity that has since been removed from the compiler.Merely deleting the let/match results in borrow errors, but sprinkling
'tcxin the signature allows it to work again, so I suspect that this code's current function is simply to compensate for overly loose lifetimes in the signature. Perhaps it made more sense at a time when HIR lifetimes were not tied to'tcx.I spotted this while working on some more experimental changes, which is why I've extracted it into its own PR.