Mercurial > vim
view runtime/syntax/m4.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 | 2a1f9b4a5ac9 |
| children |
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" Vim syntax file " Language: M4 " Maintainer: Claudio Fleiner (claudio@fleiner.com) " URL: http://www.fleiner.com/vim/syntax/m4.vim " (outdated) " Last Change: 2022 Jun 12 " This file will highlight user function calls if they use only " capital letters and have at least one argument (i.e. the '(' " must be there). Let me know if this is a problem. " quit when a syntax file was already loaded if !exists("main_syntax") if exists("b:current_syntax") finish endif " we define it here so that included files can test for it let main_syntax='m4' endif " define the m4 syntax syn match m4Variable contained "\$\d\+" syn match m4Special contained "$[@*#]" syn match m4Comment "\<\(m4_\)\=dnl\>.*" contains=SpellErrors syn match m4Comment "#.*" contains=SpellErrors syn match m4Constants "\<\(m4_\)\=__file__" syn match m4Constants "\<\(m4_\)\=__line__" syn keyword m4Constants divnum sysval m4_divnum m4_sysval syn region m4Paren matchgroup=m4Delimiter start="(" end=")" contained contains=@m4Top syn region m4Command matchgroup=m4Function start="\<\(m4_\)\=\(define\|defn\|pushdef\)(" end=")" contains=@m4Top syn region m4Command matchgroup=m4Preproc start="\<\(m4_\)\=\(include\|sinclude\)("he=e-1 end=")" contains=@m4Top syn region m4Command matchgroup=m4Statement start="\<\(m4_\)\=\(syscmd\|esyscmd\|ifdef\|ifelse\|indir\|builtin\|shift\|errprint\|m4exit\|changecom\|changequote\|changeword\|m4wrap\|debugfile\|divert\|undivert\)("he=e-1 end=")" contains=@m4Top syn region m4Command matchgroup=m4builtin start="\<\(m4_\)\=\(len\|index\|regexp\|substr\|translit\|patsubst\|format\|incr\|decr\|eval\|maketemp\)("he=e-1 end=")" contains=@m4Top syn keyword m4Statement divert undivert syn region m4Command matchgroup=m4Type start="\<\(m4_\)\=\(undefine\|popdef\)("he=e-1 end=")" contains=@m4Top syn region m4Function matchgroup=m4Type start="\<[_A-Z][_A-Z0-9]*("he=e-1 end=")" contains=@m4Top syn region m4String start="`" end="'" contains=SpellErrors syn cluster m4Top contains=m4Comment,m4Constants,m4Special,m4Variable,m4String,m4Paren,m4Command,m4Statement,m4Function " Define the default highlighting. " Only when an item doesn't have highlighting yet hi def link m4Delimiter Delimiter hi def link m4Comment Comment hi def link m4Function Function hi def link m4Keyword Keyword hi def link m4Special Special hi def link m4String String hi def link m4Statement Statement hi def link m4Preproc PreProc hi def link m4Type Type hi def link m4Special Special hi def link m4Variable Special hi def link m4Constants Constant hi def link m4Builtin Statement let b:current_syntax = "m4" if main_syntax == 'm4' unlet main_syntax endif " vim: ts=4