Mercurial > vim
view runtime/syntax/dot.vim @ 33090:461541d860ac v9.0.1830
patch 9.0.1830: Vim9: crash when accessing a null object
Commit: https://github.com/vim/vim/commit/d7085a06358c22250a27186bb7d52112ed4addd1
Author: Gianmaria Bajo <mg1979.git@gmail.com>
Date: Thu Aug 31 18:15:26 2023 +0200
patch 9.0.1830: Vim9: crash when accessing a null object
Problem: Vim9: crash when accessing a null object
Solution: Check accessing a NULL object in def function
An object is NULL when the variable is declared, but the constructor
isn't called. Accessing/setting a member on the object crashed Vim.
Note: this happens inside def functions, at script level things work
differently. Accessing a NULL object member results in E1360
(correctly), while setting a value on it results in E1012 (type
mismatch) so there's still something to fix.
closes: #12973
Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Gianmaria Bajo <mg1979.git@gmail.com>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Thu, 31 Aug 2023 18:30:03 +0200 |
parents | 4ab4ef0c48b1 |
children |
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" Language: Dot " Filenames: *.dot " Maintainer: Markus Mottl <markus.mottl@gmail.com> " URL: http://www.ocaml.info/vim/syntax/dot.vim " Last Change: 2021 Mar 24 - better attr + escape string matching, new keywords (Farbod Salamat-Zadeh) " 2011 May 17 - improved identifier matching + two new keywords " 2001 May 04 - initial version " For version 5.x: Clear all syntax items " For version 6.x: Quit when a syntax file was already loaded if version < 600 syntax clear elseif exists("b:current_syntax") finish endif let s:keepcpo = &cpo set cpo&vim " Errors syn match dotParErr ")" syn match dotBrackErr "]" syn match dotBraceErr "}" " Enclosing delimiters syn region dotEncl transparent matchgroup=dotParEncl start="(" matchgroup=dotParEncl end=")" contains=ALLBUT,dotParErr syn region dotEncl transparent matchgroup=dotBrackEncl start="\[" matchgroup=dotBrackEncl end="\]" contains=ALLBUT,dotBrackErr syn region dotEncl transparent matchgroup=dotBraceEncl start="{" matchgroup=dotBraceEncl end="}" contains=ALLBUT,dotBraceErr " Comments syn region dotComment start="//" end="$" contains=dotComment,dotTodo syn region dotComment start="/\*" end="\*/" contains=dotComment,dotTodo syn keyword dotTodo contained TODO FIXME XXX " Strings syn region dotString start=+"+ skip=+\\\\\|\\"+ end=+"+ " Escape strings syn match dotEscString /\v\\(N|G|E|T|H|L)/ containedin=dotString syn match dotEscString /\v\\(n|l|r)/ containedin=dotString " General keywords syn keyword dotKeyword graph digraph subgraph node edge strict " Node, edge and graph attributes syn keyword dotType _background area arrowhead arrowsize arrowtail bb bgcolor \ center charset class clusterrank color colorscheme comment compound \ concentrate constraint Damping decorate defaultdist dim dimen dir \ diredgeconstraints distortion dpi edgehref edgetarget edgetooltip \ edgeURL epsilon esep fillcolor fixedsize fontcolor fontname fontnames \ fontpath fontsize forcelabels gradientangle group head_lp headclip \ headhref headlabel headport headtarget headtooltip headURL height href \ id image imagepath imagepos imagescale inputscale K label label_scheme \ labelangle labeldistance labelfloat labelfontcolor labelfontname \ labelfontsize labelhref labeljust labelloc labeltarget labeltooltip \ labelURL landscape layer layerlistsep layers layerselect layersep \ layout len levels levelsgap lhead lheight lp ltail lwidth margin \ maxiter mclimit mindist minlen mode model mosek newrank nodesep \ nojustify normalize notranslate nslimit nslimit1 ordering orientation \ outputorder overlap overlap_scaling overlap_shrink pack packmode pad \ page pagedir pencolor penwidth peripheries pin pos quadtree quantum \ rank rankdir ranksep ratio rects regular remincross repulsiveforce \ resolution root rotate rotation samehead sametail samplepoints scale \ searchsize sep shape shapefile showboxes sides size skew smoothing \ sortv splines start style stylesheet tail_lp tailclip tailhref \ taillabel tailport tailtarget tailtooltip tailURL target tooltip \ truecolor URL vertices viewport voro_margin weight width xdotversion \ xlabel xlp z " Special chars syn match dotKeyChar "=" syn match dotKeyChar ";" syn match dotKeyChar "->" syn match dotKeyChar "--" " Identifier syn match dotIdentifier /\<\w\+\(:\w\+\)\?\>/ " Synchronization syn sync minlines=50 syn sync maxlines=500 " Define the default highlighting. " For version 5.7 and earlier: only when not done already " For version 5.8 and later: only when an item doesn't have highlighting yet if version >= 508 || !exists("did_dot_syntax_inits") if version < 508 let did_dot_syntax_inits = 1 command -nargs=+ HiLink hi link <args> else command -nargs=+ HiLink hi def link <args> endif HiLink dotParErr Error HiLink dotBraceErr Error HiLink dotBrackErr Error HiLink dotComment Comment HiLink dotTodo Todo HiLink dotParEncl Keyword HiLink dotBrackEncl Keyword HiLink dotBraceEncl Keyword HiLink dotKeyword Keyword HiLink dotType Type HiLink dotKeyChar Keyword HiLink dotString String HiLink dotEscString Keyword HiLink dotIdentifier Identifier delcommand HiLink endif let b:current_syntax = "dot" let &cpo = s:keepcpo unlet s:keepcpo " vim: ts=8