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Anonymize binders for `refining_impl_trait` check by compiler-errors · Pull Requ...
source link: https://github.com/rust-lang/rust/pull/116149
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We're naively using the equality impl for ty::Clause in the refinement check, which is okay except for binders, which carry some information about where they come from in the AST. Those locations are not gonna be equal between traits and impls, so anonymize those clauses so that this doesn't matter.
Fixes #116135
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