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-rw-r--r--src/testdir/test_vim9_class.vim4
-rw-r--r--src/version.c2
-rw-r--r--src/vim9class.c3
3 files changed, 9 insertions, 0 deletions
diff --git a/src/testdir/test_vim9_class.vim b/src/testdir/test_vim9_class.vim
index fa621b25ac..1021114a9d 100644
--- a/src/testdir/test_vim9_class.vim
+++ b/src/testdir/test_vim9_class.vim
@@ -3032,6 +3032,10 @@ def Test_instanceof()
assert_true(instanceof(a3, [Base1, Base2, Intf1]))
enddef
Foo()
+
+ var o_null: Base1
+ assert_false(instanceof(o_null, Base1))
+
END
v9.CheckSourceSuccess(lines)
enddef
diff --git a/src/version.c b/src/version.c
index c2bef2ff57..79b1e11c70 100644
--- 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 */
/**/
+ 1911,
+/**/
1910,
/**/
1909,
diff --git a/src/vim9class.c b/src/vim9class.c
index da862f2667..f122f90c1f 100644
--- a/src/vim9class.c
+++ b/src/vim9class.c
@@ -2865,6 +2865,9 @@ f_instanceof(typval_T *argvars, typval_T *rettv)
|| check_for_class_or_list_arg(argvars, 1) == FAIL)
return;
+ if (object_tv->vval.v_object == NULL)
+ return;
+
if (classinfo_tv->v_type == VAR_LIST)
{
FOR_ALL_LIST_ITEMS(classinfo_tv->vval.v_list, li)