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The "conflicting locations for variable" bug might still be around in rust-1.84 and rust-1.85. A bunch of us on Gentoo are consistently hitting this same SIGABORT when compiling firefox with newer rust installs. It's always seemingly when running the exact same build step too, so it appears to be 100% reproducible.
I managed to get a stacktrace here, not sure if this might explain what we're seeing more:
https://bugs.gentoo.org/949280#c13
Rust is a bit outside of my realm of expertise, but if you'd like us to try running anything else on the workdir right after it fails, we'll try and offer any evidence that we can.
Originally posted by @yuri-sevatz in #131944
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Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.Area: Debugging information in compiled programs (DWARF, PDB, etc.)Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable ExampleIssue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics.Relevant to the compiler team, which will review and decide on the PR/issue.