Georg Brandl added the comment: I'm attaching a patch that works without changing the recursion limit, and adds some tests for pathological cases.
Instead, PyErr_GivenExceptionMatches is changed so that if an exception was previously set, it is replaced by an exception that PyObject_IsSubclass raises. In that way recursion errors should be propagated properly. In exception matching, this means that exceptions (including recursion errors) from PyObject_IsSubclass are ignored. There is already an explicit test for this behavior in test_exceptions. This behavior *could* be changed if intended by introducing a variant of PyErr_GivenExceptionMatches that can set an exception even if none was set before, and calling that in cmp_outcome in ceval. ---------- nosy: +georg.brandl Added file: http://bugs.python.org/file36776/exception_proper_subclass_matching.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue12029> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
