patch 9.0.1095: using freed memory when declaration fails
Problem: Using freed memory when declaration fails. (Yegappan Lakshmanan)
Solution: After unreferencing an object set the reference to NULL.
diff --git a/src/testdir/test_vim9_class.vim b/src/testdir/test_vim9_class.vim
index c73e80f..7e4c92d 100644
--- a/src/testdir/test_vim9_class.vim
+++ b/src/testdir/test_vim9_class.vim
@@ -349,6 +349,22 @@
assert_equal('make = 123', c2.GetMake())
END
v9.CheckScriptSuccess(lines)
+
+ lines =<< trim END
+ vim9script
+
+ class MyCar
+ this.make: string
+
+ def new(make_arg: string)
+ this.make = make_arg
+ enddef
+ endclass
+
+ var c = MyCar.new("abc")
+ var c = MyCar.new("def")
+ END
+ v9.CheckScriptFailure(lines, 'E1041:')
enddef
def Test_class_member_access()