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authorbors <bors@rust-lang.org>2023-07-20 01:29:17 +0000
committerbors <bors@rust-lang.org>2023-07-20 01:29:17 +0000
commita6cdd81eff52566542cecdc1ce381dbe42cf77fb (patch)
treed8c79736ebadbccb2caf9477add711b55a7c6151 /compiler/rustc_interface/src/lib.rs
parent39f42ad9e8430a8abb06c262346e89593278c515 (diff)
parent217d97adb85d072c3d567cd8801021d3dc96223c (diff)
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Auto merge of #108714 - estebank:ice_dump, r=oli-obk
On nightly, dump ICE backtraces to disk

Implement rust-lang/compiler-team#578.

When an ICE is encountered on nightly releases, the new rustc panic handler will also write the contents of the backtrace to disk. If any `delay_span_bug`s are encountered, their backtrace is also added to the file. The platform and rustc version will also be collected.

<img width="1032" alt="Screenshot 2023-03-03 at 2 13 25 PM" src="https://user-images.githubusercontent.com/1606434/222842420-8e039740-4042-4563-b31d-599677171acf.png">

The current behavior will *always* write to disk on nightly builds, regardless of whether the backtrace is printed to the terminal, unless the environment variable `RUSTC_ICE_DISK_DUMP` is set to `0`. This is a compromise and can be changed.
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