Mercurial > vim
view src/testdir/test_utf8_comparisons.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 | 08940efa6b4e |
| children | d2ad8733db75 |
line wrap: on
line source
" Tests for case-insensitive UTF-8 comparisons (utf_strnicmp() in mbyte.c) " Also test "g~ap". func Ch(a, op, b, expected) call assert_equal(eval(printf('"%s" %s "%s"', a:a, a:op, a:b)), a:expected, \ printf('"%s" %s "%s" should return %d', a:a, a:op, a:b, a:expected)) endfunc func Chk(a, b, result) if a:result == 0 call Ch(a:a, '==?', a:b, 1) call Ch(a:a, '!=?', a:b, 0) call Ch(a:a, '<=?', a:b, 1) call Ch(a:a, '>=?', a:b, 1) call Ch(a:a, '<?', a:b, 0) call Ch(a:a, '>?', a:b, 0) elseif a:result > 0 call Ch(a:a, '==?', a:b, 0) call Ch(a:a, '!=?', a:b, 1) call Ch(a:a, '<=?', a:b, 0) call Ch(a:a, '>=?', a:b, 1) call Ch(a:a, '<?', a:b, 0) call Ch(a:a, '>?', a:b, 1) else call Ch(a:a, '==?', a:b, 0) call Ch(a:a, '!=?', a:b, 1) call Ch(a:a, '<=?', a:b, 1) call Ch(a:a, '>=?', a:b, 0) call Ch(a:a, '<?', a:b, 1) call Ch(a:a, '>?', a:b, 0) endif endfunc func Check(a, b, result) call Chk(a:a, a:b, a:result) call Chk(a:b, a:a, -a:result) endfunc func LT(a, b) call Check(a:a, a:b, -1) endfunc func GT(a, b) call Check(a:a, a:b, 1) endfunc func EQ(a, b) call Check(a:a, a:b, 0) endfunc func Test_comparisons() call EQ('', '') call LT('', 'a') call EQ('abc', 'abc') call EQ('Abc', 'abC') call LT('ab', 'abc') call LT('AB', 'abc') call LT('ab', 'aBc') call EQ('\xd0\xb9\xd1\x86\xd1\x83\xd0\xba\xd0\xb5\xd0\xbd', '\xd0\xb9\xd0\xa6\xd0\xa3\xd0\xba\xd0\x95\xd0\xbd') call LT('\xd0\xb9\xd1\x86\xd1\x83\xd0\xba\xd0\xb5\xd0\xbd', '\xd0\xaf\xd1\x86\xd1\x83\xd0\xba\xd0\xb5\xd0\xbd') call EQ('\xe2\x84\xaa', 'k') call LT('\xe2\x84\xaa', 'kkkkkk') call EQ('\xe2\x84\xaa\xe2\x84\xaa\xe2\x84\xaa', 'kkk') call LT('kk', '\xe2\x84\xaa\xe2\x84\xaa\xe2\x84\xaa') call EQ('\xe2\x84\xaa\xe2\x84\xa6k\xe2\x84\xaak\xcf\x89', 'k\xcf\x89\xe2\x84\xaakk\xe2\x84\xa6') call EQ('Abc\x80', 'AbC\x80') call LT('Abc\x80', 'AbC\x81') call LT('Abc', 'AbC\x80') call LT('abc\x80DEF', 'abc\x80def') " case folding stops at the first bad character call LT('\xc3XYZ', '\xc3xyz') call EQ('\xef\xbc\xba', '\xef\xbd\x9a') " FF3A (upper), FF5A (lower) call GT('\xef\xbc\xba', '\xef\xbc\xff') " first string is ok and equals \xef\xbd\x9a after folding, second string is illegal and was left unchanged, then the strings were bytewise compared call LT('\xc3', '\xc3\x83') call EQ('\xc3\xa3xYz', '\xc3\x83XyZ') for n in range(0x60, 0xFF) call LT(printf('xYz\x%.2X', n-1), printf('XyZ\x%.2X', n)) endfor for n in range(0x80, 0xBF) call EQ(printf('xYz\xc2\x%.2XUvW', n), printf('XyZ\xc2\x%.2XuVw', n)) endfor for n in range(0xC0, 0xFF) call LT(printf('xYz\xc2\x%.2XUvW', n), printf('XyZ\xc2\x%.2XuVw', n)) endfor endfunc " test that g~ap changes one paragraph only. func Test_gap() new " setup text call feedkeys("iabcd\<cr>\<cr>defg", "tx") " modify only first line call feedkeys("gg0g~ap", "tx") call assert_equal(["ABCD", "", "defg"], getline(1,3)) endfunc " vim: shiftwidth=2 sts=2 expandtab