New submission from Aaron Meurer <asmeu...@gmail.com>: Recently, after a small seemingly unrelated refactoring, the SymPy test suite in Python 3 started dying with "Fatal Python error: Cannot recover from stack overflow."
Here's how to reproduce the error git clone git://github.com/sympy/sympy.git # Clone the development version of SymPy cd sympy git checkout 0856119bd7399a416c21e1692855a1077164f21c # This is the first commit to exhibit the problem. Do this in case we make an unrelated change that removes the problem. ./bin/use2to3 # Convert the codebase to Python 3 python3 py3k-sympy/setup.py test # Run the tests The issue is described in more detail at http://groups.google.com/group/sympy/browse_thread/thread/f664fe88e6b4f29d/3a44691c945695db#3a44691c945695db. Some key points: - The test that triggers the error is an XFAIL test (test that is expected to fail) that raises RuntimeError: maximum recursion depth exceeded. - The change that caused the error, 0856119bd7399a416c21e1692855a1077164f21c (see https://github.com/sympy/sympy/commit/0856119bd7399a416c21e1692855a1077164f21c), is seemingly unrelated. The only thing that I can think of is that it has added another call to the stack. - This kills Python with Abort Trap: 6 in Mac OS X, which generates a problem report to be sent to Apple. I have included a copy of it here: https://gist.github.com/2317869. - Others have reproduced this error as well, as can be seen by our test reporter tool. See the mailing list thread for more info. - I tested this in 3.2.3r2, and the error still occurred. I tried testing in the 3.3 alpha, but I could not get it to compile. ---------- messages: 157876 nosy: Aaron.Meurer priority: normal severity: normal status: open title: "Fatal Python error: Cannot recover from stack overflow." with SymPy test suite type: crash versions: Python 3.2 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue14537> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
