[compiler-rt] [compiler-rt] Avoid generating coredumps when piped to a tool (PR #83701)

[antoine moynault via llvm-commits]

antmox wrote:

Hello, some bots are broken, probably due to this commit:
https://lab.llvm.org/buildbot/#/builders/185/builds/6312
https://lab.llvm.org/buildbot/#/builders/179/builds/9606
Could you please take a look?

https://github.com/llvm/llvm-project/pull/83701