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authorbors[bot] <26634292+bors[bot]@users.noreply.github.com>2020-02-22 12:31:30 +0000
committerGitHub <[email protected]>2020-02-22 12:31:30 +0000
commit2cbe8a4c4be2a69b27c248ab96341c2336f983cd (patch)
treeee1a32b47f889ed132a314286cd90a07f3700216 /LICENSE-APACHE
parent7836720f2e9a7fa01ae09ff9d51413ecd5877139 (diff)
parent5a6e770f99d1549432c1e8a1abb1aada09ad2590 (diff)
Merge #3263
3263: Implement unsizing coercions using Chalk r=matklad a=flodiebold These are coercions like `&[T; n] -> &[T]`, which are handled by the `Unsize` and `CoerceUnsized` traits. The impls for `Unsize` are all built in to the compiler and require special handling, so we need to provide them to Chalk. This adds the following `Unsize` impls: - `Unsize<[T]> for [T; _]` - `Unsize<dyn Trait> for T where T: Trait` - `Unsize<dyn SuperTrait> for dyn SubTrait` Hence we are still missing the 'unsizing the last field of a generic struct' case. Co-authored-by: Florian Diebold <[email protected]> Co-authored-by: Florian Diebold <[email protected]>
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