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force-unwind-tables has no effect #85582

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stevemk14ebr opened this issue May 22, 2021 · 1 comment
Open

force-unwind-tables has no effect #85582

stevemk14ebr opened this issue May 22, 2021 · 1 comment
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A-panic Area: Panicking machinery C-bug Category: This is a bug. S-needs-repro Status: This issue has no reproduction and needs a reproduction to make progress. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@stevemk14ebr
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Hello, i'm building a no_std rust driver for windows and the unwind tables are not being generated in release mode. This is a large issue for be because i'm interacting with a kernel interfaces that requires the unwind_table entry for a specific function. Here is the issue in detail: rust-lang/backtrace-rs#397 (comment)

I'd expect that even though i've set the panic=abort mode that unwind tables are generated, and especially with the force-unwind-tables flag set to yes. I only need a specific function to have an unwind entry, so perhaps a #[unwind_entry] function attribute could make sense to introduce? The panic behavior should be separate from what binary tables are generated, they are separate concerns...
@stevemk14ebr stevemk14ebr added the C-bug Category: This is a bug. label May 22, 2021
@stevemk14ebr
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It seems sometimes it does include the table but sometimes not. A rebuild fixed it in at least one case.

@ChrisDenton ChrisDenton added the needs-triage-legacy Old issue that were never triaged. Remove this label once the issue has been sufficiently triaged. label Jul 16, 2023
@jieyouxu jieyouxu added T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. A-panic Area: Panicking machinery S-needs-repro Status: This issue has no reproduction and needs a reproduction to make progress. and removed needs-triage-legacy Old issue that were never triaged. Remove this label once the issue has been sufficiently triaged. labels Feb 28, 2024
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A-panic Area: Panicking machinery C-bug Category: This is a bug. S-needs-repro Status: This issue has no reproduction and needs a reproduction to make progress. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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