[issue25274] "./python -m test test_sys": Fatal Python error: Cannot recover from stack overflow

[STINNER Victor]

STINNER Victor added the comment:

At revision 281ab7954d7c, the test_recursionlimit_recovery() test of test_sys is executed at depth 36.

The overflowed flag is reset when the depth becomes smaller than 50 * 3 // 4 = 37, so when Py_LeaveRecursiveCall() is called with depth level 36.

The test raises a RecursionError once which sets the overflowed flag. Then it tries again to raise the RecursionError, but instead Py_FatalError() is called because the overflowed flag was not reset.

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<http://bugs.python.org/issue25274>
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