[subset] Fix deadlock waiting for process output in subset test runner.
diff --git a/test/subset/run-tests.py b/test/subset/run-tests.py
index 072a49d..4c77de0 100755
--- a/test/subset/run-tests.py
+++ b/test/subset/run-tests.py
@@ -19,9 +19,9 @@
def cmd(command):
p = subprocess.Popen (
command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
- p.wait ()
- print (p.stderr.read (), end="") # file=sys.stderr
- return p.stdout.read (), p.returncode
+ (stdoutdata, stderrdata) = p.communicate()
+ print (stderrdata, end="") # file=sys.stderr
+ return stdoutdata, p.returncode
def read_binary(file_path):
with open(file_path, 'rb') as f:
