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Managed boxes are not completely gated #10920

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alexcrichton opened this issue Dec 11, 2013 · 2 comments
Closed

Managed boxes are not completely gated #10920

alexcrichton opened this issue Dec 11, 2013 · 2 comments

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@alexcrichton
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This program successfully compiles when it shouldn't:

fn main() { @3; }
@thestinger
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This is also how once functions are gated, so that probably needs to be changed too.

@alexcrichton
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Taking a look at the AST, Onceness only shows up in TyClosure, so I think that it's correct for once functions, it just appears that box literals aren't handled.

flip1995 pushed a commit to flip1995/rust that referenced this issue Jul 14, 2023
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Auto merge of rust-lang#10920 - blyxyas:speedtest, r=llogiq
ea4ca22 
Add `SPEEDTEST`

In the `master` branch, we currently don't have any way to test the performance of a single lint in changes.
This PR adds `SPEEDTEST`, the environment variable which lets you do a speed test on a lint / category of tests with various configuration options.

Maybe we should merge this with `lintcheck` 🤔
See the book page for more information.

changelog:none
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@alexcrichton @thestinger