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view src/testdir/test_nested_function.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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" Tests for nested functions source check.vim func NestedFunc() func! Func1() let g:text .= 'Func1 ' endfunc call Func1() func! s:func2() let g:text .= 's:func2 ' endfunc call s:func2() func! s:_func3() let g:text .= 's:_func3 ' endfunc call s:_func3() let fn = 'Func4' func! {fn}() let g:text .= 'Func4 ' endfunc call {fn}() let fn = 'func5' func! s:{fn}() let g:text .= 's:func5' endfunc call s:{fn}() endfunc func Test_nested_functions() let g:text = '' call NestedFunc() call assert_equal('Func1 s:func2 s:_func3 Func4 s:func5', g:text) endfunction func Test_nested_argument() func g:X() let g:Y = function('sort') endfunc let g:Y = function('sort') echo g:Y([], g:X()) delfunc g:X unlet g:Y endfunc func Recurse(count) if a:count > 0 call Recurse(a:count - 1) endif endfunc func Test_max_nesting() " TODO: why does this fail on Windows? Runs out of stack perhaps? CheckNotMSWindows let call_depth_here = 2 let ex_depth_here = 5 set mfd& call Recurse(99 - call_depth_here) call assert_fails('call Recurse(' . (100 - call_depth_here) . ')', 'E132:') set mfd=210 call Recurse(209 - ex_depth_here) call assert_fails('call Recurse(' . (210 - ex_depth_here) . ')', 'E169:') set mfd& endfunc " vim: shiftwidth=2 sts=2 expandtab