Mercurial > vim
comparison runtime/doc/cmdline.txt @ 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 | 46d449fd4fe4 |
children | 8c4c6369239b |
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33775:7109d1c57221 | 33776:9503dc55b5ed |
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1 *cmdline.txt* For Vim version 9.0. Last change: 2023 May 20 | 1 *cmdline.txt* For Vim version 9.0. Last change: 2023 Nov 15 |
2 | 2 |
3 | 3 |
4 VIM REFERENCE MANUAL by Bram Moolenaar | 4 VIM REFERENCE MANUAL by Bram Moolenaar |
5 | 5 |
6 | 6 |
360 be specified in the following form: | 360 be specified in the following form: |
361 *:history-indexing* | 361 *:history-indexing* |
362 A positive number represents the absolute index of an entry | 362 A positive number represents the absolute index of an entry |
363 as it is given in the first column of a :history listing. | 363 as it is given in the first column of a :history listing. |
364 This number remains fixed even if other entries are deleted. | 364 This number remains fixed even if other entries are deleted. |
365 (see |E1510|) | |
365 | 366 |
366 A negative number means the relative position of an entry, | 367 A negative number means the relative position of an entry, |
367 counted from the newest entry (which has index -1) backwards. | 368 counted from the newest entry (which has index -1) backwards. |
368 | 369 |
369 Examples: | 370 Examples: |