commit a6cd0cf0f5530f1e96114927b2824f6dc61f1bbd
author Victor Stinner <victor.stinner@haypocalc.com> Mon May 02 01:05:37 2011 +0200
committer Victor Stinner <victor.stinner@haypocalc.com> Mon May 02 01:05:37 2011 +0200
tree ccd842682a0b4893d38d5b4e3ac44fa06a17c6ae
parent 10116d40d8794825c42b2440524411cd406d1f93

Issue #11277: mmap calls fcntl(fd, F_FULLFSYNC) on Mac OS X to get around a
mmap bug with sparse files. Patch written by Steffen Daode Nurpmeso.

Lib/test/test_zlib.py

diff --git a/Lib/test/test_zlib.py b/Lib/test/test_zlib.py
index 48ac40a..7593c06 100644
--- a/Lib/test/test_zlib.py
+++ b/Lib/test/test_zlib.py
@@ -74,7 +74,7 @@
         with open(support.TESTFN, "wb+") as f:
             f.seek(_4G)
             f.write(b"asdf")
-        with open(support.TESTFN, "rb") as f:
+            f.flush()
             self.mapping = mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ)
 
     def tearDown(self):