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annotate runtime/indent.vim @ 33879:d418c82f02a4 v9.0.2149

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patch 9.0.2149: [security]: use-after-free in exec_instructions() Commit: https://github.com/vim/vim/commit/5dd41d4b6370b7b7d09d691f9252b3899c66102a Author: Christian Brabandt <cb@256bit.org> Date: Mon Dec 4 22:52:23 2023 +0100 patch 9.0.2149: [security]: use-after-free in exec_instructions() Problem: [security]: use-after-free in exec_instructions() Solution: get tv pointer again [security]: use-after-free in exec_instructions() exec_instructions may access freed memory, if the GA_GROWS_FAILS() re-allocates memory. When this happens, the typval tv may still point to now already freed memory. So let's get that pointer again and compare it with tv. If those two pointers differ, tv is now invalid and we have to refresh the tv pointer. closes: #13621 Signed-off-by: Christian Brabandt <cb@256bit.org>
author Christian Brabandt <cb@256bit.org>
date Sun, 10 Dec 2023 15:16:17 +0100
parents 4027cefc2aab
children
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1 " Vim support file to switch on loading indent files for file types
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2 "
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3 " Maintainer: The Vim Project <https://github.com/vim/vim>
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4 " Last Change: 2023 Aug 10
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5 " Former Maintainer: Bram Moolenaar <Bram@vim.org>
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7 if exists("did_indent_on")
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8 finish
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9 endif
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10 let did_indent_on = 1
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11
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12 augroup filetypeindent
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13 au FileType * call s:LoadIndent()
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14 augroup END
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16 def s:LoadIndent()
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17 if exists("b:undo_indent")
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18 legacy exe b:undo_indent
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19 unlet! b:undo_indent b:did_indent
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20 endif
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21 var s = expand("<amatch>")
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22 if s != ""
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23 if exists("b:did_indent")
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24 unlet b:did_indent
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25 endif
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26
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27 # When there is a dot it is used to separate filetype names. Thus for
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28 # "aaa.bbb" load "indent/aaa.vim" and then "indent/bbb.vim".
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29 for name in split(s, '\.')
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30 exe 'runtime! indent/' .. name .. '.vim'
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31 endfor
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32 endif
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33 enddef