[PATCH] D55443: [test] Capture stderr from 'tar --version' call as well

[Rui Ueyama via Phabricator via llvm-commits]

ruiu added inline comments.


================
Comment at: test/lit.cfg.py:99
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        env={'LANG': 'C'})
----------------
MaskRay wrote:
> If you don't need stderr, remove `stderr=subprocess.PIPE,`
> 
> `subprocess.Popen followed by communicate()` can be replaced by `check_output`
> 
> `if 'GNU tar' in sout:` does not in Python 3 as `sout` would have type `bytes`, not `str`
I think as Fangrui suggested

  subprocess.check_output(["/tmp/foo"], stderr=subprocess.STDOUT)

is better than subprocess.Popen followed by communicate() and wait().


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D55443/new/

https://reviews.llvm.org/D55443