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patch 9.1.1592: Vim9: crash with classes and garbage collection

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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 <yegappan@yahoo.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Yegappan Lakshmanan
2025-08-05 19:17:51 +02:00
committed by Christian Brabandt
parent ee865249b1
commit 688ebe596d
2 changed files with 4 additions and 1 deletions
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2
src/version.c
View File

@ -719,6 +719,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
1592,
/**/
1591,
/**/

3
src/vim9class.c
View File

@ -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++;