Const adjustments #5304
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Const adjustments #5304
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Changes the ad-hoc closure adjustment into using adjustment info instead of being separately driven from types, and likewise for autoderef. Also takes care of autoref (the cases we should be seeing in consts, at least, since we can't be doing method calls which would need the ref-to-vec mode), which didn't quite work right previously. However, "dereference" of a newtype isn't handled yet....
const-autoderef.rs is based on an example from jdm in IRC (but the quadruple-pointer part is entirely my fault).
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These changes make const translation use adjustments (autodereference, autoreference, bare-fn-to-closure), like normal code does, replacing some ad-hoc logic that wasn't always right. As a convenient side-effect, explicit dereference (both of pointers and of newtypes) is also supported in const expressions. There is also a “bonus fix” for a bug in the pretty-printer exposed by one of the added tests.
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May 2, 2020
…=flip1995 Extend `redundant_clone` to the case that cloned value is not consumed Fixes rust-lang#5303. --- changelog: Extend `redundant_clone` to the case that cloned value is not consumed
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These changes make const translation use adjustments (autodereference, autoreference, bare-fn-to-closure), like normal code does, replacing some ad-hoc logic that wasn't always right.
As a convenient side-effect, explicit dereference (both of pointers and of newtypes) is also supported in const expressions.
There is also a “bonus fix” for a bug in the pretty-printer exposed by one of the added tests.