CVS commit: src/external/bsd/nvi/dist/vi

["Rin Okuyama" <rin%netbsd.org@localhost>]

Module Name:    src
Committed By:   rin
Date:           Tue Jul  7 10:58:43 UTC 2020

Modified Files:
        src/external/bsd/nvi/dist/vi: v_txt.c

Log Message:
PR bin/55468

Fix crash due to out-of-bounds access with Ctrl-W.

PR is only for nottywerase, but also fix ttywerase case, taken from
OpenBSD via nvi2:

http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/vi/vi/v_txt.c#rev1.23
https://github.com/lichray/nvi2/commit/5d5365d3585f45651f9b4a366391798a91393337

Also, comment there is no worry for altwerase specific code, which
seems suspicious at a glance.

Reported by Azuma OKAMOTO.
Thanks for detailed explanation how to reproduce the problem!


To generate a diff of this commit:
cvs rdiff -u -r1.6 -r1.7 src/external/bsd/nvi/dist/vi/v_txt.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.