bpo-34130: Fix test_signal.test_socket() (GH-8326)
test_signal.test_socket(): On Windows, sometimes even if the C signal handler succeed to write the signal number into the write end of the socketpair, the test fails with a BlockingIOError on the non-blocking read.recv(1) because the read end of the socketpair didn't receive the byte yet. Fix the race condition on Windows by setting the read end as blocking.
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@ -392,7 +392,6 @@ class WakeupSocketSignalTests(unittest.TestCase):
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signal.signal(signum, handler)
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read, write = socket.socketpair()
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read.setblocking(False)
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write.setblocking(False)
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signal.set_wakeup_fd(write.fileno())
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