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-rw-r--r--Lib/test/subprocessdata/sigchild_ignore.py6
-rw-r--r--Lib/test/test_subprocess.py10
2 files changed, 16 insertions, 0 deletions
diff --git a/Lib/test/subprocessdata/sigchild_ignore.py b/Lib/test/subprocessdata/sigchild_ignore.py
new file mode 100644
index 0000000..1d03303
--- /dev/null
+++ b/Lib/test/subprocessdata/sigchild_ignore.py
@@ -0,0 +1,6 @@
+import signal, subprocess, sys
+# On Linux this causes os.waitpid to fail with OSError as the OS has already
+# reaped our child process. The wait() passing the OSError on to the caller
+# and causing us to exit with an error is what we are testing against.
+signal.signal(signal.SIGCLD, signal.SIG_IGN)
+subprocess.Popen([sys.executable, '-c', 'print("albatross")']).wait()
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 @@ class POSIXProcessTestCase(BaseTestCase):
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):