Mercurial > vim
view src/testdir/test_backup.vim @ 33776:9503dc55b5ed v9.0.2108
patch 9.0.2108: [security]: overflow with count for :s command
Commit: https://github.com/vim/vim/commit/ac63787734fda2e294e477af52b3bd601517fa78
Author: Christian Brabandt <cb@256bit.org>
Date: Tue Nov 14 20:45:48 2023 +0100
patch 9.0.2108: [security]: overflow with count for :s command
Problem: [security]: overflow with count for :s command
Solution: Abort the :s command if the count is too large
If the count after the :s command is larger than what fits into a
(signed) long variable, abort with e_value_too_large.
Adds a test with INT_MAX as count and verify it correctly fails.
It seems the return value on Windows using mingw compiler wraps around,
so the initial test using :s/./b/9999999999999999999999999990 doesn't
fail there, since the count is wrapping around several times and finally
is no longer larger than 2147483647. So let's just use 2147483647 in the
test, which hopefully will always cause a failure
Signed-off-by: Christian Brabandt <cb@256bit.org>
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Thu, 16 Nov 2023 22:15:10 +0100 |
| parents | ba5ca7c7d44c |
| children |
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" Tests for the backup function source check.vim func Test_backup() set backup backupdir=. backupskip= new call setline(1, ['line1', 'line2']) :f Xbackup.txt :w! Xbackup.txt " backup file is only created after " writing a second time (before overwriting) :w! Xbackup.txt let l = readfile('Xbackup.txt~') call assert_equal(['line1', 'line2'], l) bw! set backup&vim backupdir&vim backupskip&vim call delete('Xbackup.txt') call delete('Xbackup.txt~') endfunc func Test_backup_backupskip() set backup backupdir=. backupskip=*.txt new call setline(1, ['line1', 'line2']) :f Xbackup.txt :w! Xbackup.txt " backup file is only created after " writing a second time (before overwriting) :w! Xbackup.txt call assert_false(filereadable('Xbackup.txt~')) bw! set backup&vim backupdir&vim backupskip&vim call delete('Xbackup.txt') call delete('Xbackup.txt~') endfunc func Test_backup2() set backup backupdir=.// backupskip= new call setline(1, ['line1', 'line2', 'line3']) :f Xbackup.txt :w! Xbackup.txt " backup file is only created after " writing a second time (before overwriting) :w! Xbackup.txt sp *Xbackup.txt~ call assert_equal(['line1', 'line2', 'line3'], getline(1,'$')) let f = expand('%') call assert_match('%testdir%Xbackup.txt\~', f) bw! bw! call delete('Xbackup.txt') call delete(f) set backup&vim backupdir&vim backupskip&vim endfunc func Test_backup2_backupcopy() set backup backupdir=.// backupcopy=yes backupskip= new call setline(1, ['line1', 'line2', 'line3']) :f Xbackup.txt :w! Xbackup.txt " backup file is only created after " writing a second time (before overwriting) :w! Xbackup.txt sp *Xbackup.txt~ call assert_equal(['line1', 'line2', 'line3'], getline(1,'$')) let f = expand('%') call assert_match('%testdir%Xbackup.txt\~', f) bw! bw! call delete('Xbackup.txt') call delete(f) set backup&vim backupdir&vim backupcopy&vim backupskip&vim endfunc " Test for using a non-existing directory as a backup directory func Test_non_existing_backupdir() set backupdir=./non_existing_dir backupskip= call writefile(['line1'], 'Xbackupdir', 'D') new Xbackupdir call assert_fails('write', 'E510:') set backupdir&vim backupskip&vim endfunc " vim: shiftwidth=2 sts=2 expandtab