patch 9.0.1865: Vim9: garbage collection may cause crash
Problem: Vim9: garbage collection may cause crash
Solution: validate that class members typeval is not null
closes: #13028
Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>
diff --git a/src/testdir/test_vim9_class.vim b/src/testdir/test_vim9_class.vim
index 72cdaf0..8ae136f 100644
--- a/src/testdir/test_vim9_class.vim
+++ b/src/testdir/test_vim9_class.vim
@@ -1307,6 +1307,60 @@
call v9.CheckScriptSuccess(lines)
endfunc
+" Test interface garbage collection
+func Test_interface_garbagecollect()
+ let lines =<< trim END
+ vim9script
+
+ interface I
+ static ro_class_var: number
+ public static rw_class_var: number
+ static _priv_class_var: number
+ this.ro_obj_var: number
+ public this.rw_obj_var: number
+ this._priv_obj_var: number
+
+ static def ClassFoo(): number
+ static def _ClassBar(): number
+ def ObjFoo(): number
+ def _ObjBar(): number
+ endinterface
+
+ class A implements I
+ static ro_class_var: number = 10
+ public static rw_class_var: number = 20
+ static _priv_class_var: number = 30
+ this.ro_obj_var: number = 40
+ public this.rw_obj_var: number = 50
+ this._priv_obj_var: number = 60
+
+ static def _ClassBar(): number
+ return _priv_class_var
+ enddef
+
+ static def ClassFoo(): number
+ return ro_class_var + rw_class_var + A._ClassBar()
+ enddef
+
+ def _ObjBar(): number
+ return this._priv_obj_var
+ enddef
+
+ def ObjFoo(): number
+ return this.ro_obj_var + this.rw_obj_var + this._ObjBar()
+ enddef
+ endclass
+
+ assert_equal(60, A.ClassFoo())
+ var o = A.new()
+ assert_equal(150, o.ObjFoo())
+ test_garbagecollect_now()
+ assert_equal(60, A.ClassFoo())
+ assert_equal(150, o.ObjFoo())
+ END
+ call v9.CheckScriptSuccess(lines)
+endfunc
+
def Test_class_function()
var lines =<< trim END
vim9script