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patch 9.0.1913: if_python: undefined behaviour for function pointers

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Problem:  if_python: undefined behaviour for function pointers
Solution: Fix if_python undefined behavior for function pointer casts

Identified by clang 17 UBSAN (see #12745). Make sure to cast function
pointers with the same signature only.

closes: #13122

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
2023-09-19 20:30:22 +02:00
committed by Christian Brabandt
parent 6f00d17e8d
commit 2ce070c27a
4 changed files with 13 additions and 10 deletions
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5
src/if_py_both.h
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@@ -5962,14 +5962,15 @@ static struct PyMethodDef CurrentMethods[] = {
};
static void
init_range_cmd(exarg_T *eap)
init_range_cmd(void *arg)
{
exarg_T *eap = (exarg_T*)arg;
RangeStart = eap->line1;
RangeEnd = eap->line2;
}
static void
init_range_eval(typval_T *rettv UNUSED)
init_range_eval(void *rettv UNUSED)
{
RangeStart = (PyInt) curwin->w_cursor.lnum;
RangeEnd = RangeStart;