New issue 2798: Creating a global-variable PyObject in a C++ extension crashes while dlopening https://bitbucket.org/pypy/pypy/issues/2798/creating-a-global-variable-pyobject-in-a-c
Hrvoje Nikšić: The attached module crashes when compiled and imported from pypy 5.10.0. The crash is apparently triggered by global variable initialization: ``` #!c++ // global variable - crash goes away without it PyObject *global = PyInt_FromLong(42); ``` This kind of global initialization is frequently used in our in-house CPython C++ extensions[1]. It is safe for dynamically loaded extensions because by the time the shared object gets dlopen-ed, Python has been initialized and the GIL acquired. In PyPy 5.10.0 it consistently crashes before executing the module initialization function. Is this a bug in cpyext, or is the above pattern forbidden? Is there a workaround to make it work? [1] The example is, of course, simplified - in actual code, the object would be a RAII wrapper object whose constructor invokes PyInt_FromLong. It is used in many different extensions and cannot be easily replaced with, say, a function that lazily constructs and returns an object. _______________________________________________ pypy-issue mailing list pypy-issue@python.org https://mail.python.org/mailman/listinfo/pypy-issue
