Author georg.brandl
Recipients Antony.Lee, Jim.Jewett, Trundle, Yury.Selivanov, barry, benjamin.peterson, cvrebert, daniel.urban, eric.araujo, ethan.furman, gcbirzan, georg.brandl, gvanrossum, jamesh, jwilk, ncoghlan, pitrou, yorik.sar
Date 2014-10-02.10:01:48
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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.
Date User Action Args
2014-10-02 10:01:50georg.brandlsetrecipients: + georg.brandl, gvanrossum, barry, jamesh, ncoghlan, pitrou, benjamin.peterson, jwilk, eric.araujo, Trundle, cvrebert, daniel.urban, yorik.sar, ethan.furman, Yury.Selivanov, Jim.Jewett, gcbirzan, Antony.Lee
2014-10-02 10:01:50georg.brandlsetmessageid: <>
2014-10-02 10:01:50georg.brandllinkissue12029 messages
2014-10-02 10:01:49georg.brandlcreate