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Fix variance of BTreeMap and its companion structs. #30980

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Merged
merged 2 commits into from
Jan 18, 2016

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gereeter
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This takes the approach of making NodeRef universally covariant.

Fixes #30979.

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Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @nikomatsakis (or someone else) soon.

If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes.

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cc @apasel422 @gankro

@gereeter gereeter force-pushed the fix-btree-iter-variance branch from 3938a30 to fae75c9 Compare January 17, 2016 16:09
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Gankra commented Jan 17, 2016

r? @apasel422 (seems good to me, but might as well cross-check)

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I guess you can't use macros to automate things in compile-fail tests.

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@bors: r+ 7a9c4a4

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bors commented Jan 18, 2016

⌛ Testing commit 7a9c4a4 with merge 257d324...

bors added a commit that referenced this pull request Jan 18, 2016
This takes the approach of making `NodeRef` universally covariant.

 Fixes #30979.
@bors bors merged commit 7a9c4a4 into rust-lang:master Jan 18, 2016
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6 participants