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[rfc 2229] Drop fully captured upvars in the same order as the regular drop code Currently, with the new 2021 edition, if a closure captures all of the fields of an upvar, we'll drop those fields in the order they are used within the closure instead of the normal drop order (the definition order of the fields in the type). This changes that so we sort the captured fields by the definition order which causes them to drop in that same order as well. Fixes rust-lang/project-rfc-2229#42 r? `@nikomatsakis` |
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For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.