[PATCH] D47913: [Support] Introduce a new utility for testing child process execution

[Reid Kleckner via Phabricator via llvm-commits]

rnk accepted this revision.
rnk added a comment.
This revision is now accepted and ready to land.

Looks good, but @dblaikie has helpful thoughts about testing and he is responsive, so I'd let him take a look.


https://reviews.llvm.org/D47913