Fix rustc breaking change: convert to Place's new boxed slice projection #4540
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Fixes breaking change from rust-lang PR rust-lang/rust#63420
jolson88
changed the title
spastorino
approved these changes
Sep 14, 2019
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Made some comments but I was confused, this looks perfect and changes doesn't change semantics. Good to merge. |
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I can't claim any knowledge either here, but given @spastorino's approval and that there's no visible regressions I'm gonna @bors r+ Thanks! |
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📌 Commit 80822b4 has been approved by |
bors
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Sep 14, 2019
Fix rustc breaking change: convert to Place's new boxed slice projection Addressed breaking changes from rust-lang PR rust-lang/rust#63420 I'm not entirely sure the semantics are preserved as I don't have much knowledge about MIR yet. So this code was largely reverse-engineered from the PR above. I wouldn't be surprised if I did something wrong :). I followed the instructions to pull latest rustc from master and verified the build break I was seeing in my PR for cast-lossless in Travis CI. With these changes, it compiles again and all tests pass. Fixes rust-lang/rust#64440 changelog: none
llogiq
reviewed
Sep 14, 2019
| @@ -303,7 +302,7 @@ fn base_local_and_movability<'tcx>( | |||
| mut projection, | |||
| } = place.as_ref(); | |||
| if let PlaceBase::Local(local) = place_base { | |||
| while let Some(box Projection { base, elem }) = projection { | |||
| while let [base @ .., elem] = projection { | |||
| projection = base; | |||
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☀️ Test successful - checks-travis, status-appveyor |
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Addressed breaking changes from rust-lang PR rust-lang/rust#63420
I'm not entirely sure the semantics are preserved as I don't have much knowledge about MIR yet. So this code was largely reverse-engineered from the PR above. I wouldn't be surprised if I did something wrong :).
I followed the instructions to pull latest rustc from master and verified the build break I was seeing in my PR for cast-lossless in Travis CI. With these changes, it compiles again and all tests pass.
Fixes rust-lang/rust#64440
changelog: none