Bug 809974

Description of problem:
I've been writing an experimental static analysis tool to detect bugs commonly occurring within C Python extension modules:
  https://fedorahosted.org/gcc-python-plugin/
  http://gcc-python-plugin.readthedocs.org/en/latest/cpychecker.html
  http://fedoraproject.org/wiki/Features/StaticAnalysisOfPythonRefcounts

I ran the latest version of the tool (in git master; post 0.9) on
pyxattr-0.5.0-4.fc17.src.rpm, and it reports various errors.

You can see a list of errors here, triaged into categories (from most significant to least significant):
http://fedorapeople.org/~dmalcolm/gcc-python-plugin/2012-04-04/pyxattr-0.5.0-4.fc17/

I've manually reviewed the issues reported by the tool.

Within the category "Reference leaks" the 1 issue reported appears to be a genuine leak.

Within the category "Reference leak within initialization" the 1 issues reported is likely to be inconsequential.

Within the category "Segfaults within error-handling paths" the 3 issues reported appear to be genuine crashers under low-memory conditions

Within the category "Returning (PyObject*)NULL without setting an exception" the 6 issues reported appear to all be false positives.

There may of course be other bugs in my checker tool.

Hope this is helpful; let me know if you need help reading the logs that the tool generates - I know that it could use some improvement.

Version-Release number of selected component (if applicable):
pyxattr-0.5.0-4.fc17
gcc-python-plugin post-0.9 git 796fa7a73adfddb182c2edad70694b5ebca337b9 running the checker in an *f16* chroot