Mercurial > vim
view runtime/macros/README.txt @ 33262:6eac4f616293 v9.0.1899
patch 9.0.1899: potential buffer overflow in PBYTE macro
Commit: https://github.com/vim/vim/commit/ffb13674d1af1c90beb229867ec989e4fb232df3
Author: Christian Brabandt <cb@256bit.org>
Date: Fri Sep 15 20:22:02 2023 +0200
patch 9.0.1899: potential buffer overflow in PBYTE macro
Problem: potential buffer overflow in PBYTE macro
Solution: Check returned memline length
closes: #13083
the PBYTE macro is used to put byte c at a position lp of the returned
memline. However, in case of unexpected errors ml_get_buf() may return
either "???" or an empty line in which case it is quite likely that we
are causing a buffer overrun.
Therefore, switch the macro PBYTE (which is only used in ops.c anyhow)
to a function, that verifies that we will only try to access within the
given length of the buffer.
Also, since the macro is only used in ops.c, move the definition from
macros.h to ops.c
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Fri, 15 Sep 2023 20:30:07 +0200 |
parents | a345060d671a |
children |
line wrap: on
line source
The macros in the maze, hanoi and urm directories can be used to test Vim for vi compatibility. They have been written for vi to show its unlimited possibilities. The life macros can be used for performance comparisons. hanoi Macros that solve the tower of hanoi problem. life Macros that run Conway's game of life. maze Macros that solve a maze (amazing!). urm Macros that simulate a simple computer: "Universal Register Machine" The other files contain some handy utilities. They also serve as examples for how to use Vi and Vim functionality. less.sh + less.vim make Vim work like less (or more) The following have been moved to an optional package. Add the command to your vimrc file to use the package: packadd! dvorak " Dvorak keyboard support; adds mappings packadd! editexisting " when editing a file that is already edited with " another Vim instance, go to that Vim instance packadd! justify " justifying text. packadd! matchit " makes the % command work better packadd! shellmenu " menus for editing shell scripts in the GUI version packadd! swapmouse " swap left and right mouse buttons