New submission from Amaury Forgeot d'Arc:
The script below segfaults cpython2.7.
The cause is in BaseException_set_message(), which calls
Py_XDECREF(self->message) and thus can call back into Python code with a
dangling PyObject* pointer. Py_CLEAR should be used instead.
class Nasty(str):
def __del__(self):
del e.message
e = ValueError(Nasty("msg"))
e.args = ()
del e.message
del e
----------
messages: 175203
nosy: amaury.forgeotdarc
priority: normal
severity: normal
status: open
title: SEGFAULT when deleting Exception.message
type: crash
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Python tracker <[email protected]>
<http://bugs.python.org/issue16445>
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