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Add Sync bound to allocator parameter in vec::IntoIter #92879

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merged 1 commit into from
Jan 15, 2022

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The A: Sync bound was forgotten in 8725e4c#diff-b78c3ab6d37f4ede32195707528f8a76c49d4557cc9d3a7a09417b5157729b9fR3132

Similar unsafe impl Sync in that commit do include the A: Sync bound (and around the alloc lib), so I think this was just an honest mistake.

Here's an example of the unsoundness: https://play.rust-lang.org/?version=nightly&mode=debug&edition=2021&gist=16cbfeff7c934ae72ab632c1476fdd8b

@steffahn found this, I'm just putting up the fix cause nobody else did :^)

Fixes #92633

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r? @kennytm

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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 Jan 14, 2022
@camelid camelid added the T-libs-api Relevant to the library API team, which will review and decide on the PR/issue. label Jan 14, 2022
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r? @dtolnay

@rust-highfive rust-highfive assigned dtolnay and unassigned kennytm Jan 14, 2022
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Thanks!

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dtolnay commented Jan 14, 2022

@bors r+

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bors commented Jan 14, 2022

📌 Commit 7debb5c has been approved by dtolnay

@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 Jan 14, 2022
bors added a commit to rust-lang-ci/rust that referenced this pull request Jan 15, 2022
…askrgr

Rollup of 8 pull requests

Successful merges:

 - rust-lang#92747 (Simplification of BigNum::bit_length)
 - rust-lang#92767 (Use the new language identifier for Rust in the PDB debug format)
 - rust-lang#92775 (Inline std::os::unix::ffi::OsStringExt methods)
 - rust-lang#92863 (Remove `&mut` from `io::read_to_string` signature)
 - rust-lang#92865 (Ignore static lifetimes for GATs outlives lint)
 - rust-lang#92873 (Generate more precise generator names)
 - rust-lang#92879 (Add Sync bound to allocator parameter in vec::IntoIter)
 - rust-lang#92892 (Do not fail evaluation in const blocks)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 784e4ba into rust-lang:master Jan 15, 2022
@rustbot rustbot added this to the 1.60.0 milestone Jan 15, 2022
@compiler-errors compiler-errors deleted the into_iter_unsound branch April 7, 2022 04:35
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Successfully merging this pull request may close these issues.

Missing A: Sync bound for Allocator for vec::IntoIter
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