Mercurial > vim
view src/testdir/test_wnext.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 |
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" Test :wnext :wNext and :wprevious func Test_wnext() args X1 X2 call setline(1, '1') wnext call assert_equal(['1'], readfile('X1')) call assert_equal('X2', bufname('%')) call setline(1, '2') call assert_fails('wnext', 'E165:') call assert_equal(['2'], readfile('X2')) call assert_equal('X2', bufname('%')) " Test :wnext with a single file. args X1 call assert_equal('X1', bufname('%')) call assert_fails('wnext', 'E163:') " Test :wnext with a count. args X1 X2 X3 call assert_equal('X1', bufname('%')) 2wnext call assert_equal('X3', bufname('%')) " Test :wnext {file}. args X1 X2 X3 wnext X4 call assert_equal(['1'], readfile('X4')) call assert_equal('X2', bufname('%')) call assert_fails('wnext X4', 'E13:') call assert_equal(['1'], readfile('X4')) wnext! X4 call assert_equal(['2'], readfile('X4')) call assert_equal('X3', bufname('%')) args X1 X2 " Commented out as, E13 occurs on Windows instead of E17 "call assert_fails('wnext .', 'E17:') call assert_fails('wnext! .', 'E502:') %bwipe! call delete('X1') call delete('X2') call delete('X3') call delete('X4') endfunc func Test_wprevious() args X1 X2 next call assert_equal('X2', bufname('%')) call setline(1, '2') wprevious call assert_equal(['2'], readfile('X2')) call assert_equal('X1', bufname('%')) call setline(1, '1') call assert_fails('wprevious', 'E164:') call assert_fails('wNext', 'E164:') " Test :wprevious with a single file. args X1 call assert_fails('wprevious', 'E163:') call assert_fails('wNext', 'E163:') " Test :wprevious with a count. args X1 X2 X3 2next call setline(1, '3') call assert_equal('X3', bufname('%')) 2wprevious call assert_equal('X1', bufname('%')) call assert_equal(['3'], readfile('X3')) " Test :wprevious {file} args X1 X2 X3 2next call assert_equal('X3', bufname('%')) wprevious X4 call assert_equal(['3'], readfile('X4')) call assert_equal('X2', bufname('%')) call assert_fails('wprevious X4', 'E13:') call assert_equal(['3'], readfile('X4')) wprevious! X4 call assert_equal(['2'], readfile('X4')) call assert_equal('X1', bufname('%')) args X1 X2 " Commented out as, E13 occurs on Windows instead of E17 "call assert_fails('wprevious .', 'E17:') call assert_fails('wprevious! .', 'E502:') %bwipe! call delete('X1') call delete('X2') call delete('X3') call delete('X4') endfunc " vim: shiftwidth=2 sts=2 expandtab