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Author btharper
Recipients btharper
Date 2019-03-10.00:08:40
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <1552176520.99.0.273814604607.issue36253@roundup.psfhosted.org>
In-reply-to
Content 
When running the builtin test suite with address sanitizer enabled, one of the ctypes tests causes a use after free demonstrating the danger of using a reference to the inside of a deallocated buffer. This use is detected as an error by the address sanitizer and can be replicated with the following; a stack trace from the resulting failure is attached.

export ASAN_OPTIONS="detect_leaks=0"
make clean
./configure --with-address-sanitizer --with-pydebug
make
./python Lib/ctypes/test/test_stringptr.py StringPtrTestCase -v
History
Date User Action Args
2019-03-10 00:08:41btharpersetrecipients: + btharper
2019-03-10 00:08:40btharpersetmessageid: <1552176520.99.0.273814604607.issue36253@roundup.psfhosted.org>
2019-03-10 00:08:40btharperlinkissue36253 messages
2019-03-10 00:08:40btharpercreate