[issue3611] invalid exception context

[STINNER Victor]

STINNER Victor <haypo at users.sourceforge.net> added the comment:

It looks that the problem is that PyErr_SetObject() is not re-entrant.
The crash occurs when PyErr_SetObject() is called (indirectly) by 
PyErr_SetObject(): tstate->exc_value value is changed (set to NULL).

As noticed by amaury.forgeotdarc, the problem is linked to be garbage 
collector: the crash occurs when the garbage collector calls a 
destructor which will reuse PyErr_SetObject().

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue3611>
_______________________________________