patch 9.0.1824: Vim9: private members may be modifiable
Problem: Vim9: private members may be modifiable
Solution: prevent modification for def function
closes: #12963
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 97be92d..ad0be5b 100644
--- a/src/testdir/test_vim9_class.vim
+++ b/src/testdir/test_vim9_class.vim
@@ -3653,4 +3653,37 @@
v9.CheckScriptFailure(lines, 'E1369: Duplicate member: val')
enddef
+" Test for accessing a private member outside a class in a def function
+def Test_private_member_access_outside_class()
+ # private object member variable
+ var lines =<< trim END
+ vim9script
+ class A
+ this._val = 10
+ def GetVal(): number
+ return this._val
+ enddef
+ endclass
+ def T()
+ var a = A.new()
+ a._val = 20
+ enddef
+ T()
+ END
+ v9.CheckScriptFailure(lines, 'E1333: Cannot access private member: _val')
+
+ # private class member variable
+ lines =<< trim END
+ vim9script
+ class A
+ static _val: number = 10
+ endclass
+ def T()
+ A._val = 20
+ enddef
+ T()
+ END
+ v9.CheckScriptFailure(lines, 'E1333: Cannot access private member: _val')
+enddef
+
" vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker