From 5671b61327bf570ccc232b4a6f164c077eaa5bcb Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Thu, 17 Jul 2025 16:48:56 +0800
Subject: [PATCH] vim-patch:partial:9.0.0877: using freed memory with :comclear
 while listing commands

Problem:    Using freed memory with :comclear while listing commands.
Solution:   Bail out when the command list has changed. (closes vim/vim#11440)

https://github.com/vim/vim/commit/cf2594fbf34d9a6776bd9d33f845cb8ceb1e1cd0

Co-authored-by: Bram Moolenaar <Bram@vim.org>
---
 test/old/testdir/test_usercommands.vim | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/test/old/testdir/test_usercommands.vim b/test/old/testdir/test_usercommands.vim
index c4bc45aa3d..046e0b1874 100644
--- a/test/old/testdir/test_usercommands.vim
+++ b/test/old/testdir/test_usercommands.vim
@@ -1,5 +1,8 @@
 " Tests for user defined commands
 
+source check.vim
+source screendump.vim
+
 " Test for <mods> in user defined commands
 function Test_cmdmods()
   let g:mods = ''
@@ -362,6 +365,14 @@ func Test_CmdCompletion()
   call feedkeys(":com MyCmd chist\<Tab>\<C-B>\"\<CR>", 'tx')
   call assert_equal("\"com MyCmd chistory", @:)
 
+  " delete the Check commands to avoid them showing up
+  call feedkeys(":com Check\<C-A>\<C-B>\"\<CR>", 'tx')
+  let cmds = substitute(@:, '"com ', '', '')->split()
+  for cmd in cmds
+    exe 'delcommand ' .. cmd
+  endfor
+  delcommand MissingFeature
+
   command! DoCmd1 :
   command! DoCmd2 :
   call feedkeys(":com \<C-A>\<C-B>\"\<CR>", 'tx')
@@ -715,7 +726,7 @@ func Test_recursive_define()
   call DefCmd('Command')
 
   let name = 'Command'
-  while len(name) < 30
+  while len(name) <= 30
     exe 'delcommand ' .. name
     let name ..= 'x'
   endwhile