New submission from zhaoya :
i have question:call,c-->python-->c.
1.the c pointer void* abc="123" by pycapsule in the c code.
..
void* lpContext = "abc";
PyObject * lpPyContext = PyCapsule_New(lpContext, "Context",NULL);
..
PyTuple_SetItem(pArgs, 1, lpPyContext);
PyObject* pyResult = PyObject_CallObject(pFunc, pArgs);
2.c call python:
in the python code:
import ctypes
pycapsule = ctypes.windll.LoadLibrary("C:\Users\zhaoya16975\Documents\Visual
Studio 2017\Projects\cpython\Release\pycapsule.dll")
def test( lpContext,lpRequest,lpAnswer):
print lpContext
pycapsule.hello()
pycapsule.GetContext(lpContext)
.
the lpContest is ""
but,i can't lpContext in the pycapsule.GetContest:
the capsule is null poniter,the GetContext no execute!!
void* FUNCTION_CALL_MODE GetContext(PyObject *capsule) {
printf(" GetContext..\n");
//if (!PyCapsule_IsValid((PyObject *)capsule, "Context")) {
// printf(" the Capsule Context is no Valid\n");
// return NULL;
//}
//return PyCapsule_GetPointer((PyObject *)capsule, "Context");
return NULL;
}
i hope c call python pass void* ,and python call c pass void* ,but the capsule
call no success.
------
components: Windows
messages: 312399
nosy: paul.moore, steve.dower, tim.golden, zach.ware, zhaoya
priority: normal
severity: normal
status: open
title: pycapsule:PyObject * is NULL pointer
type: crash
versions: Python 2.7
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Python tracker
<https://bugs.python.org/issue32881>
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