[PATCH] D157682: [llvm-exegesis] Print errno on failures in subprocess

[Aiden Grossman via Phabricator via llvm-commits]

aidengrossman added reviewers: courbet, gchatelet, ondrasej.
aidengrossman added a comment.

Missed a couple of these during the switch away from `pidfd_getfd` and that made debugging a little difficult when I had things setup incorrectly while pulling in Exegesis as a library in an external project.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D157682/new/

https://reviews.llvm.org/D157682