patch 9.1.1592: Vim9: crash with classes and garbage collection
Commit:
https://github.com/vim/vim/commit/688ebe596d1d6b3d8284de5572ce502d22d20b78
Author: Yegappan Lakshmanan <yegap...@yahoo.com>
Date: Tue Aug 5 19:17:51 2025 +0200
patch 9.1.1592: Vim9: crash with classes and garbage collection
Problem: Vim9: crash with classes and garbage collection
(Christian J. Robinson, after v9.1.1566)
Solution: When getting the references to an object, make sure the object
is valid (Yegappan Lakshmanan)
closes: #17860
Signed-off-by: Yegappan Lakshmanan <yegap...@yahoo.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>
diff --git a/src/version.c b/src/version.c
index cb6454639..fecf9219f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -719,6 +719,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 1592,
/**/
1591,
/**/
diff --git a/src/vim9class.c b/src/vim9class.c
index aa68a6dc8..40b594af7 100644
--- a/src/vim9class.c
+++ b/src/vim9class.c
@@ -3714,7 +3714,8 @@ class_get_selfrefs(class_T *cl)
for (int i = 0; i < cl->class_class_member_count; ++i)
{
tv = &cl->class_members_tv[i];
- if (tv->v_type == VAR_OBJECT && tv->vval.v_object->obj_class == cl
+ if (tv->v_type == VAR_OBJECT && tv->vval.v_object != NULL
+ && tv->vval.v_object->obj_class == cl
&& (tv->vval.v_object->obj_refcount == 1
|| (IS_ENUM(cl) && tv->vval.v_object->obj_refcount == 2)))
self_refs++;
--
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