From ab860cb5f6c749b937e0986167702a36e45000ca Mon Sep 17 00:00:00 2001
From: erw7 <erw7.github@gmail.com>
Date: Mon, 2 Dec 2019 19:09:30 +0900
Subject: dictwatcher: fix use-after-free #11495

fixes #11494
---
 test/functional/ex_cmds/dict_notifications_spec.lua | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'test')

diff --git a/test/functional/ex_cmds/dict_notifications_spec.lua b/test/functional/ex_cmds/dict_notifications_spec.lua
index 48e7e05e4c..5c67431221 100644
--- a/test/functional/ex_cmds/dict_notifications_spec.lua
+++ b/test/functional/ex_cmds/dict_notifications_spec.lua
@@ -357,4 +357,18 @@ describe('VimL dictionary notifications', function()
     eq(2, eval('1+1')) -- Still alive?
   end)
 
+  it('does not cause use-after-free when unletting from callback', function()
+    source([[
+      let g:called = 0
+      function W(...) abort
+        unlet g:d
+        let g:called = 1
+      endfunction
+      let g:d = {}
+      call dictwatcheradd(g:d, '*', function('W'))
+      let g:d.foo = 123
+    ]])
+    eq(1, eval('g:called'))
+  end)
+
 end)
-- 
cgit