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patch 9.0.1917: undefined behaviour with python function pointer

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Problem:  undefined behaviour with python function pointer
Solution: correctly cast function pointers from void

Fix more undefined behaviors in if_python

Fix remaining UBSAN errors from Clang 17 in if_python in casting
function pointers.

Also fix a mistake where `PyMem_Free()` should be returning void, by the
dynamic build is mistakenly casting it as a function that returns an
int.

closes: #13128

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
This commit is contained in:
Yee Cheng Chin
2023-09-20 19:59:47 +02:00
committed by Christian Brabandt
parent aa64ba1587
commit d606fccf6f
4 changed files with 41 additions and 18 deletions
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2
src/if_python.c
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@@ -317,7 +317,7 @@ struct PyMethodDef { Py_ssize_t a; };
*/
static int(*dll_PyArg_Parse)(PyObject *, char *, ...);
static int(*dll_PyArg_ParseTuple)(PyObject *, char *, ...);
static int(*dll_PyMem_Free)(void *);
static void(*dll_PyMem_Free)(void *);
static void* (*dll_PyMem_Malloc)(size_t);
static int(*dll_PyDict_SetItemString)(PyObject *dp, char *key, PyObject *item);
static int(*dll_PyErr_BadArgument)(void);