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Fix tests in test_socket to use correctly CMSG_LEN (GH-9594)

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After some failures in AMD64 FreeBSD CURRENT Debug 3.x buildbots
regarding tests in test_socket that are using
testFDPassSeparateMinSpace(), FreeBDS revision 337423 was pointed
out to be the reason the test started to fail.

A close examination of the manpage for cmsg_space(3) reveals that
the number of file descriptors needs to be taken into account when
using CMSG_LEN().

This commit fixes tests in test_socket to use correctly CMSG_LEN, taking
into account the number of FDs.
This commit is contained in:
Pablo Galindo 2018-09-27 10:25:03 +01:00 • committed by GitHub
parent f55c64c632
commit 7291108d88
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1 changed files with 3 additions and 2 deletions
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5
Lib/test/test_socket.py
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@ -3223,10 +3223,11 @@ class SCMRightsTest(SendrecvmsgServerTimeoutBase):
def testFDPassSeparateMinSpace(self):
# Pass two FDs in two separate arrays, receiving them into the
# minimum space for two arrays.
self.checkRecvmsgFDs(2,
num_fds = 2
self.checkRecvmsgFDs(num_fds,
self.doRecvmsg(self.serv_sock, len(MSG),
socket.CMSG_SPACE(SIZEOF_INT) +
socket.CMSG_LEN(SIZEOF_INT)),
socket.CMSG_LEN(SIZEOF_INT * num_fds)),
maxcmsgs=2, ignoreflags=socket.MSG_CTRUNC)
@testFDPassSeparateMinSpace.client_skip