Mercurial > vim
view src/testdir/test_backspace_opt.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 | e7ab58f57ea3 |
children |
line wrap: on
line source
" Tests for 'backspace' settings func Test_backspace_option() set backspace= call assert_equal('', &backspace) set backspace=indent call assert_equal('indent', &backspace) set backspace=eol call assert_equal('eol', &backspace) set backspace=start call assert_equal('start', &backspace) set backspace=nostop call assert_equal('nostop', &backspace) " Add the value set backspace= set backspace=indent call assert_equal('indent', &backspace) set backspace+=eol call assert_equal('indent,eol', &backspace) set backspace+=start call assert_equal('indent,eol,start', &backspace) set backspace+=nostop call assert_equal('indent,eol,start,nostop', &backspace) " Delete the value set backspace-=nostop call assert_equal('indent,eol,start', &backspace) set backspace-=indent call assert_equal('eol,start', &backspace) set backspace-=start call assert_equal('eol', &backspace) set backspace-=eol call assert_equal('', &backspace) " Check the error call assert_fails('set backspace=ABC', 'E474:') call assert_fails('set backspace+=def', 'E474:') " NOTE: Vim doesn't check following error... "call assert_fails('set backspace-=ghi', 'E474:') " Check backwards compatibility with version 5.4 and earlier set backspace=0 call assert_equal('0', &backspace) set backspace=1 call assert_equal('1', &backspace) set backspace=2 call assert_equal('2', &backspace) set backspace=3 call assert_equal('3', &backspace) call assert_fails('set backspace=4', 'E474:') call assert_fails('set backspace=10', 'E474:') " Cleared when 'compatible' is set set compatible call assert_equal('', &backspace) set nocompatible viminfo+=nviminfo endfunc " Test with backspace set to the non-compatible setting func Test_backspace_ctrl_u() new call append(0, [ \ "1 this shouldn't be deleted", \ "2 this shouldn't be deleted", \ "3 this shouldn't be deleted", \ "4 this should be deleted", \ "5 this shouldn't be deleted", \ "6 this shouldn't be deleted", \ "7 this shouldn't be deleted", \ "8 this shouldn't be deleted (not touched yet)"]) call cursor(2, 1) set compatible set backspace=2 exe "normal Avim1\<C-U>\<Esc>\<CR>" exe "normal Avim2\<C-G>u\<C-U>\<Esc>\<CR>" set cpo-=< inoremap <c-u> <left><c-u> exe "normal Avim3\<*C-U>\<Esc>\<CR>" iunmap <c-u> exe "normal Avim4\<C-U>\<C-U>\<Esc>\<CR>" " Test with backspace set to the compatible setting set backspace= visualbell exe "normal A vim5\<Esc>A\<C-U>\<C-U>\<Esc>\<CR>" exe "normal A vim6\<Esc>Azwei\<C-G>u\<C-U>\<Esc>\<CR>" inoremap <c-u> <left><c-u> exe "normal A vim7\<*C-U>\<*C-U>\<Esc>\<CR>" call assert_equal([ \ "1 this shouldn't be deleted", \ "2 this shouldn't be deleted", \ "3 this shouldn't be deleted", \ "4 this should be deleted3", \ "", \ "6 this shouldn't be deleted vim5", \ "7 this shouldn't be deleted vim6", \ "8 this shouldn't be deleted (not touched yet) vim7", \ ""], getline(1, '$')) " Reset values set compatible&vim set visualbell&vim set backspace&vim " Test new nostop option %d_ let expected = "foo bar foobar" call setline(1, expected) call cursor(1, 8) exe ":norm! ianotherone\<c-u>" call assert_equal(expected, getline(1)) call cursor(1, 8) exe ":norm! ianothertwo\<c-w>" call assert_equal(expected, getline(1)) let content = getline(1) for value in ['indent,nostop', 'eol,nostop', 'indent,eol,nostop', 'indent,eol,start,nostop'] exe ":set bs=".. value %d _ call setline(1, content) let expected = " foobar" call cursor(1, 8) exe ":norm! ianotherone\<c-u>" call assert_equal(expected, getline(1), 'CTRL-U backspace value: '.. &bs) let expected = "foo foobar" call setline(1, content) call cursor(1, 8) exe ":norm! ianothertwo\<c-w>" call assert_equal(expected, getline(1), 'CTRL-W backspace value: '.. &bs) endfor " Reset options set compatible&vim set visualbell&vim set backspace&vim close! endfunc " Test for setting 'backspace' to a number value (for backward compatibility) func Test_backspace_number_value() new set backspace=0 call setline(1, ['one two', 'three four']) call cursor(2, 1) exe "normal! A\<C-W>\<C-U>" call assert_equal('three four', getline(2)) set backspace=1 exe "normal! A\<CR>five\<C-W>\<C-U>\<C-W>\<C-U>" call assert_equal(['one two', 'three four'], getline(1, '$')) set backspace=2 call cursor(2, 7) exe "normal! ihalf\<C-U>" call assert_equal('three four', getline(2)) set backspace=3 call cursor(2, 7) exe "normal! ihalf\<C-U>" call assert_equal('four', getline(2)) bw! set backspace& endfunc " vim: shiftwidth=2 sts=2 expandtab