Fix lifetimes of outputs for Patch #1141
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@weihanglo Would you be able to review this? It's a bit difficult at times to understand the ownership requirements, but I think this is correct. |
weihanglo
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Mar 12, 2025
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Checking with this libgit2 code snippet, it looks correct. At this it should be there when patch is still valid. Thanks!
naseschwarz
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git2-rs changed the lifetime of the result of Patch::hunk() to reference the patch struct: rust-lang/git2-rs#1141 Thus, returning a patch struct and a reference into it is flagged by the borrow checker upon move when returning. This patch avoids returning both alltogether by separating retrieving and retrieving the patch.
extrawurst
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Mar 18, 2025
* Bump git2 from 0.20.0 to 0.20.1 Bumps [git2](https://github.com/rust-lang/git2-rs) from 0.20.0 to 0.20.1. - [Changelog](https://github.com/rust-lang/git2-rs/blob/master/CHANGELOG.md) - [Commits](rust-lang/git2-rs@git2-0.20.0...git2-0.20.1) --- updated-dependencies: - dependency-name: git2 dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> * Avoid passing reference into struct git2-rs changed the lifetime of the result of Patch::hunk() to reference the patch struct: rust-lang/git2-rs#1141 Thus, returning a patch struct and a reference into it is flagged by the borrow checker upon move when returning. This patch avoids returning both alltogether by separating retrieving and retrieving the patch. --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Naseschwarz <naseschwarz@0x53a.de>
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This fixes the lifetimes for the functions that return data from a
Patch. From what I can tell, these are returning data owned by thePatchobject itself. Previously they had lifetimes tied to the values that created thePatch, but that allows these outputs to outlive the patch, allowing a use-after-free.Note that there was a previous fix here in #523, but I think that was mistake to change these accessor functions. The
Patchitself still has a lifetime tied to its inputs introduced in #523.Fixes #1135