[PATCH] D111072: [llvm-cxxfilt][NFC] Fix test for running in Windows cmd

[Orlando Cazalet-Hyams via Phabricator via llvm-commits]

Orlando added a comment.

Ok, I have found that it's actually the `echo` that is causing the issue for me; it is the `echo` chosen based on my build config doing the the `⦙` to `?` conversion. It turns out that redirecting to and from a temporary file side steps the problem because echo is special-cased to run as an "in-process builtins" in llvm-lit iff it's not running as part of a pipeline.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D111072/new/

https://reviews.llvm.org/D111072