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A-codegenArea: Code generationArea: Code generationC-bugCategory: This is a bug.Category: This is a bug.E-mentorCall for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion.Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion.I-unsoundIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/SoundnessIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/SoundnessP-lowLow priorityLow priorityT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.
Description
It's undefined to unwind past an FFI boundary such as a pub extern "C" fn
. Code generation should automatically insert a landing pad doing an abort. This will eliminate the class of memory safety errors resulting from unwinding into C from Rust. LLVM will be able to optimize it out if it is being caught and handled explicitly, such as to translate into an error code for C.
kornelski
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A-codegenArea: Code generationArea: Code generationC-bugCategory: This is a bug.Category: This is a bug.E-mentorCall for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion.Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion.I-unsoundIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/SoundnessIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/SoundnessP-lowLow priorityLow priorityT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.