commit 18143d3111b2122c7a94ca51085a60b3073cb139
author Ernie Rael <errael@raelity.com> Mon Sep 04 22:30:41 2023 +0200
committer Christian Brabandt <cb@256bit.org> Mon Sep 04 22:30:41 2023 +0200
tree c882f6d5b2f9e8f5643ab6c23a8555d0c1cc3373
parent dccc29c228f8336ef7dd069a447886639af4458e

patch 9.0.1867: Vim9: access to interface statics possible

Problem:  Vim9: access to interface statics possible
Solution: Prevent direct access to interface statics

closes: #13007

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Ernie Rael <errael@raelity.com>

src/eval.c

diff --git a/src/eval.c b/src/eval.c
index 7cfe68c..4e1dbde 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -1180,6 +1180,14 @@
 	    return NULL;
 	lp->ll_tv = &v->di_tv;
     }
+    if (vim9script && writing && lp->ll_tv->v_type == VAR_CLASS
+	    && (lp->ll_tv->vval.v_class->class_flags & CLASS_INTERFACE) != 0)
+    {
+	if (!quiet)
+	    semsg(_(e_interface_static_direct_access_str),
+			    lp->ll_tv->vval.v_class->class_name, lp->ll_name);
+	return NULL;
+    }
 
     if (vim9script && (flags & GLV_NO_DECL) == 0)
     {