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>

" Vim syntax file
" Language:	CVS commit file
" Maintainer:	Matt Dunford (zenmatic@gmail.com)
" Last Change:	Sat Nov 24 23:25:11 CET 2001

" quit when a syntax file was already loaded
if exists("b:current_syntax")
	finish
endif

syn region cvsLine start="^CVS: " end="$" contains=cvsFile,cvsCom,cvsFiles,cvsTag
syn match cvsFile  contained " \t\(\(\S\+\) \)\+"
syn match cvsTag   contained " Tag:"
syn match cvsFiles contained "\(Added\|Modified\|Removed\) Files:"
syn region cvsCom start="Committing in" end="$" contains=cvsDir contained extend keepend
syn match cvsDir   contained "\S\+$"

" Define the default highlighting.
" Only when an item doesn't have highlighting yet

hi def link cvsLine		Comment
hi def link cvsDir		cvsFile
hi def link cvsFile		Constant
hi def link cvsFiles		cvsCom
hi def link cvsTag		cvsCom
hi def link cvsCom		Statement


let b:current_syntax = "cvs"