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rustc --explain E0487 is inconsistent and unclear #67040

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ryanswilson59 opened this issue Dec 5, 2019 · 2 comments
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rustc --explain E0487 is inconsistent and unclear #67040

ryanswilson59 opened this issue Dec 5, 2019 · 2 comments
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A-docs Area: documentation for any part of the project, including the compiler, standard library, and tools C-bug Category: This is a bug.

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@ryanswilson59
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In the text visible at https://doc.rust-lang.org/1.25.0/error-index.html#E0478
We first see

In this example, the 'SnowWhite lifetime is supposed to outlive the 'kiss lifetime

struct Prince<'kiss, 'SnowWhite: 'kiss> { // You say here that 'kiss must live
                                          // longer than 'SnowWhite.
    child: Box<Wedding<'kiss> + 'SnowWhite>, // And now it's all good!
}

The comment directly contradicts that 'SnowWhite should outlive 'kiss, thus making it unclear what the code actually does.
@jonas-schievink jonas-schievink added C-bug Category: This is a bug. A-docs Area: documentation for any part of the project, including the compiler, standard library, and tools labels Dec 5, 2019
@ryanswilson59 ryanswilson59 mentioned this issue Dec 9, 2019
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JohnTitor added a commit to JohnTitor/rust that referenced this issue Dec 10, 2019
@JohnTitor
Rollup merge of rust-lang#67168 - ryanswilson59:master, r=Dylan-DPC
2af31da 
corrected comment in E0478

I believe this fixes the issue that I opened,  rust-lang#67040, about E0478 being contradictory.
@JohnTitor
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@ryanswilson59 This has been fixed by #67168?

@JohnTitor
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Closing as resolved, feel free to re-open if it's still an issue.

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