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Fix private::exclusive_unwrap_conflict test. Fixes #4689. #5078

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@bblum bblum commented Feb 22, 2013

r? @brson

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brson commented Feb 22, 2013

@bblum After reading your comments on that issue I don't understand why adding the assert has any effect here. Are there some checks for failure embedded in the assert somewhere?

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bblum commented Feb 22, 2013

The assert does not have an inherent check for linked failure per se; the design is that the condition itself will trip if linked failure doesn't. In fact I think with this fix the spawn could even be unlinked.

Think about it this way: either the child succeeds to unwrap, in which case the parent fails, or the child fails, in which case the parent gets through the unwrap but trips the assert. They can't both get through the unwrap successfully.

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brson commented Feb 22, 2013

Oh, that's funny. I get it. Thanks.

bors added a commit that referenced this pull request Feb 22, 2013
@bors bors closed this Feb 22, 2013
flip1995 pushed a commit to flip1995/rust that referenced this pull request Feb 25, 2021
Rework use_self impl based on ty::Ty comparison rust-lang#3410 | Take 2

This builds on top of rust-lang#5531

I already reviewed and approved the commits by `@montrivo.` So only the review of my commits should be necessary.

I would also appreciate your review `@montrivo,` since you are familiar with the challenges here.

Fixes rust-lang#3410 and Fixes rust-lang#4143 (same problem)
Fixes rust-lang#2843
Fixes rust-lang#3859
Fixes rust-lang#4734 and fixes rust-lang#6221
Fixes rust-lang#4305
Fixes rust-lang#5078 (even at expression level now 🎉)
Fixes rust-lang#3881 and Fixes rust-lang#4887 (same problem)
Fixes rust-lang#3909

Not yet: rust-lang#4140 (test added)

All the credit for the fixes goes to `@montrivo.` I only refactored and copy and pasted his code.

changelog: rewrite [`use_self`] lint and fix multiple (8) FPs. One to go.
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