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-rw-r--r--Lib/test/test_mailbox.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/test/test_mailbox.py b/Lib/test/test_mailbox.py
index 36a265390e..fdda1d11d3 100644
--- a/Lib/test/test_mailbox.py
+++ b/Lib/test/test_mailbox.py
@@ -1092,7 +1092,7 @@ class _TestMboxMMDF(_TestSingleFile):
# Signal the child it can now release the lock and exit.
p.send(b'p')
# Wait for child to exit. Locking should now succeed.
- exited_pid, status = os.waitpid(pid, 0)
+ support.wait_process(pid, exitcode=0)
self._box.lock()
self._box.unlock()