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Disable the evaluation cache when in intercrate mode by Aaron1011 · Pull Request...
source link: https://github.com/rust-lang/rust/pull/88994
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It's possible to use the same InferCtxt with both
an intercrate and non-intercrate SelectionContext. However,
the local (inferctxt) evaluation cache is not aware of this
distinction, so this kind of InferCtxt re-use will pollute
the cache wth bad results.
This commit avoids the issue by disabling the evaluation cache
entirely during intercrate mode.
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