Message 337583 - Python tracker

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In-reply-to
Author	btharper
Recipients	btharper
Date	2019年03月10日.00:08:40
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1552176520.99.0.273814604607.issue36253@roundup.psfhosted.org>

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

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年03月10日 00:08:41	btharper	set	recipients: + btharper
2019年03月10日 00:08:40	btharper	set	messageid: <1552176520.99.0.273814604607.issue36253@roundup.psfhosted.org>
2019年03月10日 00:08:40	btharper	link	issue36253 messages
2019年03月10日 00:08:40	btharper	create

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