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Guarantee try_reserve preserves the contents on error #100331

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merged 1 commit into from
Aug 22, 2022

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@lo48576 lo48576 commented Aug 9, 2022

Update doc comments to make the guarantee explicit. However, some
implementations does not have the statement though.

  • HashMap, HashSet: require guarantees on hashbrown side.
  • PathBuf: simply redirecting to OsString.

Fixes #99606.

Update doc comments to make the guarantee explicit. However, some
implementations does not have the statement though.

* `HashMap`, `HashSet`: require guarantees on hashbrown side.
* `PathBuf`: simply redirecting to `OsString`.

Fixes rust-lang#99606.
@rustbot rustbot added the T-libs Relevant to the library team, which will review and decide on the PR/issue. label Aug 9, 2022
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rustbot commented Aug 9, 2022

Hey! It looks like you've submitted a new PR for the library teams!

If this PR contains changes to any rust-lang/rust public library APIs then please comment with @rustbot label +T-libs-api -T-libs to tag it appropriately. If this PR contains changes to any unstable APIs please edit the PR description to add a link to the relevant API Change Proposal or create one if you haven't already. If you're unsure where your change falls no worries, just leave it as is and the reviewer will take a look and make a decision to forward on if necessary.

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  • Changing public documentation in ways that create new stability guarantees
  • Changing observable runtime behavior of library APIs

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r? @thomcc

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@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Aug 9, 2022
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lo48576 commented Aug 9, 2022

@rustbot label +T-libs-api -T-libs

@rustbot rustbot added T-libs-api Relevant to the library API team, which will review and decide on the PR/issue. and removed T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Aug 9, 2022
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thomcc commented Aug 22, 2022

This had a passing FCP so looks fine. Sorry for the delay.

@bors r+ rollup

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bors commented Aug 22, 2022

📌 Commit 2bb7e1e has been approved by thomcc

It is now in the queue for this repository.

@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 Aug 22, 2022
Dylan-DPC added a commit to Dylan-DPC/rust that referenced this pull request Aug 22, 2022
…ilure, r=thomcc

Guarantee `try_reserve` preserves the contents on error

Update doc comments to make the guarantee explicit. However, some
implementations does not have the statement though.

* `HashMap`, `HashSet`: require guarantees on hashbrown side.
* `PathBuf`: simply redirecting to `OsString`.

Fixes rust-lang#99606.
bors added a commit to rust-lang-ci/rust that referenced this pull request Aug 22, 2022
Rollup of 8 pull requests

Successful merges:

 - rust-lang#98200 (Expand potential inner `Or` pattern for THIR)
 - rust-lang#99770 (Make some const prop mir-opt tests `unit-test`s)
 - rust-lang#99957 (Rework Ipv6Addr::is_global to check for global reachability rather than global scope - rebase)
 - rust-lang#100331 (Guarantee `try_reserve` preserves the contents on error)
 - rust-lang#100336 (Fix two const_trait_impl issues)
 - rust-lang#100713 (Convert diagnostics in parser/expr to SessionDiagnostic)
 - rust-lang#100820 (Use pointer `is_aligned*` methods)
 - rust-lang#100872 (Add guarantee that Vec::default() does not alloc)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 382ba73 into rust-lang:master Aug 22, 2022
@rustbot rustbot added this to the 1.65.0 milestone Aug 22, 2022
@lo48576 lo48576 deleted the try-reserve-preserve-on-failure branch August 23, 2022 02:33
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Guarantees of content preservation on try_reserve failure?
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