patch 9.1.1401: list not materialized in prop_list()

Problem:  list not materialized in prop_list()
          (Nickwiz)
Solution: materialize list before accessing it

fixes: #17298
closes: #17349

Signed-off-by: Christian Brabandt <cb@256bit.org>

src/testdir/test_textprop.vim

@@ -4757,4 +4757,29 @@ func Test_textprop_with_wincolor()
   call StopVimInTerminal(buf)
 endfunc
 
+func Test_textprop_materialize_list()
+	let ids = range(3)
+	call assert_equal([], prop_list(1, #{ids: ids}))
+
+	let ids = range(3) + []
+	call assert_equal([], prop_list(1, #{ids: ids}))
+
+	let ids = range(3)
+	let ids[0] = ids[0]
+	call assert_equal([], prop_list(1, #{ids: ids}))
+
+	let ids = range(3)
+	call assert_equal([], prop_list(1, #{ids: ids}))
+
+	call assert_equal([], prop_list(1, #{ids: range(3) + [] }))
+
+	let ids = range(3)
+	call assert_equal([], prop_list(1, #{ids: ids}))
+
+	let ids = range(0, 3)
+	call assert_equal([], prop_list(1, #{ids: ids}))
+
+	call assert_equal([], prop_list(1, #{ids: 3->range()}))
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab

src/textprop.c

@@ -1439,7 +1439,7 @@ get_prop_ids_from_list(list_T *l, int *num_ids)
 {
     int		*prop_ids;
     listitem_T	*li;
-    int		i;
+    int		i = 0;
     int		id;
     int		error;
 
@@ -1449,7 +1449,7 @@ get_prop_ids_from_list(list_T *l, int *num_ids)
     if (prop_ids == NULL)
 	return NULL;
 
-    i = 0;
+    CHECK_LIST_MATERIALIZE(l);
     FOR_ALL_LIST_ITEMS(l, li)
     {
 	error = FALSE;

src/version.c

@@ -709,6 +709,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1401,
 /**/
     1400,
 /**/