patch 9.0.1913: if_python: undefined behaviour for function pointers
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>
diff --git a/src/if_python3.c b/src/if_python3.c
index c6d1acc..d2ffada 100644
--- a/src/if_python3.c
+++ b/src/if_python3.c
@@ -1425,7 +1425,7 @@
p_pyx = 3;
DoPyCommand(script == NULL ? (char *) eap->arg : (char *) script,
- (rangeinitializer) init_range_cmd,
+ init_range_cmd,
(runner) run_cmd,
(void *) eap);
}
@@ -1491,7 +1491,7 @@
// Execute the file
DoPyCommand(buffer,
- (rangeinitializer) init_range_cmd,
+ init_range_cmd,
(runner) run_cmd,
(void *) eap);
}
@@ -1503,7 +1503,7 @@
p_pyx = 3;
DoPyCommand((char *)eap->arg,
- (rangeinitializer)init_range_cmd,
+ init_range_cmd,
(runner)run_do,
(void *)eap);
}
@@ -2053,7 +2053,7 @@
do_py3eval(char_u *str, typval_T *rettv)
{
DoPyCommand((char *) str,
- (rangeinitializer) init_range_eval,
+ init_range_eval,
(runner) run_eval,
(void *) rettv);
if (rettv->v_type == VAR_UNKNOWN)