Issue #1731717: Fixed the problem where subprocess.wait() could cause an
OSError exception when The OS had been told to ignore SIGCLD in our process
or otherwise not wait for exiting child processes.
diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py
index 0804a13..1e97bac 100644
--- a/Lib/test/test_subprocess.py
+++ b/Lib/test/test_subprocess.py
@@ -1073,6 +1073,16 @@
close_fds=False, pass_fds=(fd, )))
self.assertIn('overriding close_fds', str(context.warning))
+ def test_wait_when_sigchild_ignored(self):
+ # NOTE: sigchild_ignore.py may not be an effective test on all OSes.
+ sigchild_ignore = support.findfile("sigchild_ignore.py",
+ subdir="subprocessdata")
+ p = subprocess.Popen([sys.executable, sigchild_ignore],
+ stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+ stdout, stderr = p.communicate()
+ self.assertEqual(0, p.returncode, "sigchild_ignore.py exited"
+ " non-zero with this error:\n%s" % stderr)
+
@unittest.skipUnless(mswindows, "Windows specific tests")
class Win32ProcessTestCase(BaseTestCase):