Module Name: src
Committed By: mlelstv
Date: Sun Nov 10 10:54:29 UTC 2024
Modified Files:
src/external/bsd/nvi/dist/regex: engine.c
Log Message:
Treat a non-existing line like an empty line for matching to avoid segfault.
Fixes PR 57630
To generate a diff of this commit:
cvs rdiff -u -r1.3 -r1.4 src/external/bsd/nvi/dist/regex/engine.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/external/bsd/nvi/dist/regex/engine.c
diff -u src/external/bsd/nvi/dist/regex/engine.c:1.3 src/external/bsd/nvi/dist/regex/engine.c:1.4
--- src/external/bsd/nvi/dist/regex/engine.c:1.3 Tue Jan 7 21:48:12 2014
+++ src/external/bsd/nvi/dist/regex/engine.c Sun Nov 10 10:54:29 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: engine.c,v 1.3 2014/01/07 21:48:12 christos Exp $ */
+/* $NetBSD: engine.c,v 1.4 2024/11/10 10:54:29 mlelstv Exp $ */
/*-
* Copyright (c) 1992, 1993, 1994 Henry Spencer.
* Copyright (c) 1992, 1993, 1994
@@ -150,6 +150,11 @@ int eflags;
const sopno gl = g->laststate;
RCHAR_T *start;
RCHAR_T *stop;
+ RCHAR_T empty[] = { REOF };
+
+ /* Input can be a NULL pointer, treat like an empty line. */
+ if (string == NULL)
+ string = empty;
/* simplify the situation where possible */
if (g->cflags®_NOSUB)
