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Document that ManuallyDrop::drop should not called more than once #62360

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merged 3 commits into from
Jul 29, 2019

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Aaron1011
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Double dropping is unsound (e.g. #60977). This commit documents the fact that ManuallyDrop::drop should not be called multiple times on the same instance, as it might not be immediately obvious that this counts as a use of uninitialized data.

Double dropping is unsound (e.g. rust-lang#60977). This commit documents the fact that `ManuallyDrop::drop` should not be called multiple times on the same instance, as it might not be immediately obvious that this counts as a use of uninitialized data.
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r? @shepmaster

(rust_highfive has picked a reviewer for you, use r? to override)

@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jul 4, 2019
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Centril commented Jul 4, 2019

r? @RalfJung

@bors rollup

@rust-highfive rust-highfive assigned RalfJung and unassigned shepmaster Jul 4, 2019
Co-Authored-By: Mazdak Farrokhzad <[email protected]>
@RalfJung RalfJung added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jul 14, 2019
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ping from triage.. hello @Aaron1011, can you please provide a status?

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@rholderfield: I've updated the wording to follow @RalfJung's suggestion

@Centril Centril added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Jul 27, 2019
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Thanks!

@bors r+ rollup

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bors commented Jul 28, 2019

📌 Commit a93f4ab has been approved by RalfJung

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jul 28, 2019
Centril added a commit to Centril/rust that referenced this pull request Jul 28, 2019
Document that ManuallyDrop::drop should not called more than once

Double dropping is unsound (e.g. rust-lang#60977). This commit documents the fact that `ManuallyDrop::drop` should not be called multiple times on the same instance, as it might not be immediately obvious that this counts as a use of uninitialized data.
bors added a commit that referenced this pull request Jul 28, 2019
Rollup of 8 pull requests

Successful merges:

 - #61856 (Lint attributes on function arguments)
 - #62360 (Document that ManuallyDrop::drop should not called more than once)
 - #62392 (Update minifier-rs version)
 - #62871 (Explicit error message for async recursion.)
 - #62995 (Avoid ICE when suggestion span is at Eof)
 - #63053 (SystemTime docs: recommend Instant for elapsed time)
 - #63081 (tidy: Cleanup the directory whitelist)
 - #63088 (Remove anonymous_parameters from unrelated test)

Failed merges:

r? @ghost
@bors bors merged commit a93f4ab into rust-lang:master Jul 29, 2019
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7 participants