Amaury Forgeot d'Arc <[email protected]> added the comment:
I reproduce the problem on Linux (./configure --enable-shared), after I
modified the source code a bit to directly use Python.h and to link with
libpython3.2.so (no call to dlopen). In gdb the stack trace has exactly the
same symbols as the attached crash log, so the issue is not specific to Mac
frameworks.
The crash is inside _PyImport_LoadDynamicModule("_pickle"), when
_PyImport_FixupExtension() calls Py_DECREF(def->m_base.m_copy), this certainly
frees objects allocated in a previous incarnation of the interpreter, and
segfaults in type_dealloc(): _PyObject_GC_UNTRACK(type).
In import.c::_PyImport_FixupExtension(), the Py_DECREF is preceded by a
comment: """ /* Somebody already imported the module,
likely under a different name.
XXX this should really not happen. */
Py_DECREF(def->m_base.m_copy);
"""
I removed this statement, and the program now runs correctly. I don't know
about memory leaks though...
----------
nosy: +amaury.forgeotdarc, loewis
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<http://bugs.python.org/issue9197>
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