commit 652dee448618589de5528a9e9a36995803f5557a
author Bram Moolenaar <Bram@vim.org> Fri Jan 28 20:47:49 2022 +0000
committer Bram Moolenaar <Bram@vim.org> Fri Jan 28 20:47:49 2022 +0000
tree a659b1d0a7f5409943f2c626e2a87cde520c3733
parent 14cbf77845624e4bfc28a65a5debb81864cba2cf

patch 8.2.4245: ":retab 0" may cause illegal memory access

Problem:    ":retab 0" may cause illegal memory access.
Solution:   Limit the value of 'tabstop' to 10000.

src/testdir/test_options.vim

diff --git a/src/testdir/test_options.vim b/src/testdir/test_options.vim
index 2265894..2af13d9 100644
--- a/src/testdir/test_options.vim
+++ b/src/testdir/test_options.vim
@@ -368,6 +368,8 @@
   call assert_fails('set shiftwidth=-1', 'E487:')
   call assert_fails('set sidescroll=-1', 'E487:')
   call assert_fails('set tabstop=-1', 'E487:')
+  call assert_fails('set tabstop=10000', 'E474:')
+  call assert_fails('set tabstop=5500000000', 'E474:')
   call assert_fails('set textwidth=-1', 'E487:')
   call assert_fails('set timeoutlen=-1', 'E487:')
   call assert_fails('set updatecount=-1', 'E487:')