Mercurial > vim
view src/testdir/test_random.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 | a267e07ded3b |
| children |
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" Tests for srand() and rand() source check.vim source shared.vim func Test_Rand() let r = srand(123456789) call assert_equal([1573771921, 319883699, 2742014374, 1324369493], r) call assert_equal(4284103975, rand(r)) call assert_equal(1001954530, rand(r)) call assert_equal(2701803082, rand(r)) call assert_equal(2658065534, rand(r)) call assert_equal(3104308804, rand(r)) let s = srand() " using /dev/urandom or used time, result is different each time call assert_notequal(s, srand()) call test_srand_seed(123456789) call assert_equal(4284103975, rand()) call assert_equal(1001954530, rand()) call test_srand_seed() call assert_fails('echo srand(1.2)', 'E805:') call assert_fails('echo srand([1])', 'E745:') call assert_fails('echo rand("burp")', 'E475:') call assert_fails('echo rand([1, 2, 3])', 'E730:') call assert_fails('echo rand([[1], 2, 3, 4])', 'E730:') call assert_fails('echo rand([1, [2], 3, 4])', 'E730:') call assert_fails('echo rand([1, 2, [3], 4])', 'E730:') call assert_fails('echo rand([1, 2, 3, [4]])', 'E730:') endfunc func Test_issue_5587() call rand() call garbagecollect() call rand() endfunc func Test_srand() CheckNotGui let cmd = GetVimCommand() .. ' -V -es -c "echo rand()" -c qa!' let bad = 0 for _ in range(10) echo cmd let result1 = system(cmd) let result2 = system(cmd) if result1 ==# result2 let bad += 1 endif endfor call assert_inrange(0, 4, bad) endfunc " vim: shiftwidth=2 sts=2 expandtab