patch 9.1.0089: qsort() comparison functions should be transitive Commit: https://github.com/vim/vim/commit/e06e43766500ecb4cd1031fa16cf9cbebdb222c1 Author: Christian Brabandt <cb@256bit.org> Date: Fri Feb 9 19:39:14 2024 +0100 patch 9.1.0089: qsort() comparison functions should be transitive Problem: qsort() comparison functions should be transitive Solution: Do not subtract values, but rather use explicit comparisons Improve qsort() comparison functions There has been a recent report on qsort() causing out-of-bounds read & write in glibc for non transitive comparison functions https://www.qualys.com/2024/01/30/qsort.txt Even so the bug is in glibc's implementation of the qsort() algorithm, it's bad style to just use substraction for the comparison functions, which may cause overflow issues and as hinted at in OpenBSD's manual page for qsort(): "It is almost always an error to use subtraction to compute the return value of the comparison function." So check the qsort() comparison functions and change them to be safe. closes: #13980 Signed-off-by: Christian Brabandt <cb@256bit.org>

README_extra.txt for version 9.1 of Vim: Vi IMproved.

These extra files of Vim are for special purposes.  This README explains what
the files are for.  For general information about Vim, see the "README.txt"
file.


farsi/*			Files for the Farsi (persian) language.  If you don't
			know what Farsi is, this is not for you.

src/if_sniff.*		Interface to SNiFF.  If you don't know what SNiFF is,
			this is not for you.

src/os_amiga.*		Files for the Amiga port.

src/os_msdos.*
src/os_dos.*		Files for the MS-DOS port.

src/os_mac.*		Files for the Mac port.

src/os_vms*		Files for the VMS port.

src/os_w32*
src/os_win32.*		Files for the Win32 port.

src/gui_w32.*		Files for the Win32 GUI.
src/gui_w48.*		Files for the Win32 and Win16 GUI.
src/Make_mvc.mak	MS Visual C++ makefile for the Win32 GUI.

src/if_ole.*		OLE automation interface, for MS Windows 95 and NT.

src/GvimExt/*		DLL for the "Edit with Vim" context menu entry

nsis/*			NSIS script to build the self-installing MS-Windows exe

runtime/doc/*.man	Preprocessed manual pages.

runtime/macros/file_select.vim	Vim script to browse directories (Unix only).