[src/trunk]: src/lib/libc/gen Handle invalid character sequences.

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/2a898bc1f3bf
branches:  trunk
changeset: 784895:2a898bc1f3bf
user:      christos <christos%NetBSD.org@localhost>
date:      Wed Feb 13 15:22:09 2013 +0000

description:
Handle invalid character sequences.

diffstat:

 lib/libc/gen/vis.c |  10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diffs (31 lines):

diff -r f71f2c323e0d -r 2a898bc1f3bf lib/libc/gen/vis.c
--- a/lib/libc/gen/vis.c        Wed Feb 13 14:03:48 2013 +0000
+++ b/lib/libc/gen/vis.c        Wed Feb 13 15:22:09 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vis.c,v 1.48 2013/02/13 12:15:09 pooka Exp $   */
+/*     $NetBSD: vis.c,v 1.49 2013/02/13 15:22:09 christos Exp $        */
 
 /*-
  * Copyright (c) 1989, 1993
@@ -57,7 +57,7 @@
 
 #include <sys/cdefs.h>
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: vis.c,v 1.48 2013/02/13 12:15:09 pooka Exp $");
+__RCSID("$NetBSD: vis.c,v 1.49 2013/02/13 15:22:09 christos Exp $");
 #endif /* LIBC_SCCS and not lint */
 #ifdef __FBSDID
 __FBSDID("$FreeBSD$");
@@ -315,8 +315,10 @@
                mbslength = mblength;
                while (mbslength) {
                        clen = mbtowc(src, mbsrc, mbslength);
-                       if (clen < 0)
-                               break;
+                       if (clen < 0) {
+                               *src = (wint_t)(u_char)*mbsrc;
+                               clen = 1;
+                       }
                        if (clen == 0)
                                clen = 1;
                        src++;