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fc5af18133
resolve: Make disambiguators for underscore bindings module-local (take 2) The difference with https://github.com/rust-lang/rust/pull/144013 can be seen in the second commit. Now we just keep a separate disambiguator counter in every `Module`, instead of a global counter in `Resolver`. This will be ok for parallel import resolution because we'll need to lock the module anyway when updating `resolutions` and other fields in it. And for external modules the disabmiguator could be just passed as an argument to `define_extern`, without using any cells or locks, once https://github.com/rust-lang/rust/pull/143884 lands. Unblocks https://github.com/rust-lang/rust/pull/143884.