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Add -Zuse-sync-unwind by quininer · Pull Request #117744 · rust-lang/rust

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Nov 9, 2023

bjorn3

@rustbot rustbot added O-unix

Operating system: Unix-like

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Dec 31, 2023

@quininer 

This flag specifies whether LLVM generates async unwind or sync unwind.

@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.

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Jan 8, 2024

matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request

Jan 8, 2024 
Add -Zuse-sync-unwind

Currently Rust uses async unwind by default, but async unwind will bring non-negligible size overhead. it would be nice to allow users to choose this.

In addition, async unwind currently prevents LLVM from generate compact unwind for MachO, if one wishes to generate compact unwind for MachO, then also needs this flag.

bors added a commit to rust-lang-ci/rust that referenced this pull request

Jan 9, 2024

bors added a commit to rust-lang-ci/rust that referenced this pull request

Jan 9, 2024

rust-timer added a commit to rust-lang-ci/rust that referenced this pull request

Jan 9, 2024 
Rollup merge of rust-lang#117744 - quininer:add-z-sync-uw, r=bjorn3

Add -Zuse-sync-unwind

Currently Rust uses async unwind by default, but async unwind will bring non-negligible size overhead. it would be nice to allow users to choose this.

In addition, async unwind currently prevents LLVM from generate compact unwind for MachO, if one wishes to generate compact unwind for MachO, then also needs this flag.

@ojeda ojeda mentioned this pull request

Mar 5, 2024

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