Add -Z proc-macro-backtrace to allow showing proc-macro panics
#75082
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(I'll review this next weekend.) |
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I'll review this next weekend. |
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☔ The latest upstream changes (presumably #74862) made this pull request unmergeable. Please resolve the merge conflicts. |
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Fixes rust-lang#75050 Previously, we would unconditionally suppress the panic hook during proc-macro execution. This commit adds a new flag -Z proc-macro-backtrace, which allows running the panic hook for easier debugging.
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7047: Add force_show_panics flag for proc-macro bridge r=jonas-schievink a=edwin0cheng rust-lang/rust#75082 and rust-lang/rust#76292 added a new flag in `proc_macro::Bridge` such that the ABI was changed. These ABI changing are the reason of some weird panics which caused #6880 and maybe related to the panic mentioned in #6820. These changes are landed on rust stable 1.48 so I think it is okay to apply it now. fixes #6880 r @jonas-schievink Co-authored-by: Edwin Cheng <[email protected]>
Fixes #75050
Previously, we would unconditionally suppress the panic hook during
proc-macro execution. This commit adds a new flag
-Z proc-macro-backtrace, which allows running the panic hook foreasier debugging.