rust-lang / rust-lang/rust

`tests/run-make/short-ice/` fails on i686 and x86_64 Windows msvc sometimes

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A-run-make A-testsuite C-bug O-windows-msvc T-compiler
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Rust
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Description

  • On i686-pc-windows-msvc: the assert_eq! on line 37 fails, almost seems like it missing debug info? Haven't been able to reproduce locally, but it happens on CI.
  • On x86_64-pc-windows-msvc: full backtrace sometimes do not contain matching count of short backtrace marker pairs?

See discussion at #t-infra > Spurious test failure: run-make\short-ice.

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Research direction

Start with tests/run-make/short-ice/, especially the assert_eq! on line 37, and review the linked Zulip discussion. Reproduce or inspect the intermittent failures on i686-pc-windows-msvc and x86_64-pc-windows-msvc, including the short backtrace marker counts. Done means the test no longer fails spuriously on these Windows MSVC targets.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
compilers, testing
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
45/100

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