# HG changeset patch
# User Christian Brabandt <cb@256bit.org>
# Date 1695149105 -7200
# Node ID a43861545866140afce951655a79ab8c4223042b
# Parent  190aa75db4cfa00d1bb74de90cf87418a4deac62
patch 9.0.1913: if_python: undefined behaviour for function pointers

Commit: https://github.com/vim/vim/commit/2ce070c27acd12ccc614afa4cecf4970a645a4af
Author: Yee Cheng Chin <ychin.git@gmail.com>
Date:   Tue Sep 19 20:30:22 2023 +0200

    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_py_both.h b/src/if_py_both.h
--- a/src/if_py_both.h
+++ b/src/if_py_both.h
@@ -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;
diff --git a/src/if_python.c b/src/if_python.c
--- a/src/if_python.c
+++ b/src/if_python.c
@@ -1103,7 +1103,7 @@ ex_python(exarg_T *eap)
 	    p_pyx = 2;
 
 	DoPyCommand(script == NULL ? (char *) eap->arg : (char *) script,
-		(rangeinitializer) init_range_cmd,
+		init_range_cmd,
 		(runner) run_cmd,
 		(void *) eap);
     }
@@ -1154,7 +1154,7 @@ ex_pyfile(exarg_T *eap)
 
     // Execute the file
     DoPyCommand(buffer,
-	    (rangeinitializer) init_range_cmd,
+	    init_range_cmd,
 	    (runner) run_cmd,
 	    (void *) eap);
 }
@@ -1166,7 +1166,7 @@ ex_pydo(exarg_T *eap)
 	p_pyx = 2;
 
     DoPyCommand((char *)eap->arg,
-	    (rangeinitializer) init_range_cmd,
+	    init_range_cmd,
 	    (runner)run_do,
 	    (void *)eap);
 }
@@ -1524,7 +1524,7 @@ FunctionGetattr(PyObject *self, char *na
 do_pyeval(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)
diff --git a/src/if_python3.c b/src/if_python3.c
--- a/src/if_python3.c
+++ b/src/if_python3.c
@@ -1425,7 +1425,7 @@ ex_py3(exarg_T *eap)
 	    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 @@ ex_py3file(exarg_T *eap)
 
     // Execute the file
     DoPyCommand(buffer,
-	    (rangeinitializer) init_range_cmd,
+	    init_range_cmd,
 	    (runner) run_cmd,
 	    (void *) eap);
 }
@@ -1503,7 +1503,7 @@ ex_py3do(exarg_T *eap)
 	p_pyx = 3;
 
     DoPyCommand((char *)eap->arg,
-	    (rangeinitializer)init_range_cmd,
+	    init_range_cmd,
 	    (runner)run_do,
 	    (void *)eap);
 }
@@ -2053,7 +2053,7 @@ LineToString(const char *str)
 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)
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -700,6 +700,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1913,
+/**/
     1912,
 /**/
     1911,