[src/trunk]: src/lib/libc/gen Use 16x instead of 4x the amount of space since...

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

details:   https://anonhg.NetBSD.org/src/rev/83ec89525f61
branches:  trunk
changeset: 357786:83ec89525f61
user:      christos <christos%NetBSD.org@localhost>
date:      Mon Nov 27 16:37:21 2017 +0000

description:
Use 16x instead of 4x the amount of space since each wint_t can result in
4 bytes of 4 characters ("\ooo") each.

diffstat:

 lib/libc/gen/vis.c |  11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)

diffs (46 lines):

diff -r 7ea4c2372fc5 -r 83ec89525f61 lib/libc/gen/vis.c
--- a/lib/libc/gen/vis.c        Mon Nov 27 15:02:05 2017 +0000
+++ b/lib/libc/gen/vis.c        Mon Nov 27 16:37:21 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vis.c,v 1.73 2017/04/23 01:58:48 christos Exp $        */
+/*     $NetBSD: vis.c,v 1.74 2017/11/27 16:37:21 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 1.73 2017/04/23 01:58:48 christos Exp $");
+__RCSID("$NetBSD: vis.c,v 1.74 2017/11/27 16:37:21 christos Exp $");
 #endif /* LIBC_SCCS and not lint */
 #ifdef __FBSDID
 __FBSDID("$FreeBSD$");
@@ -432,10 +432,10 @@
        mdst = NULL;
        if ((psrc = calloc(mbslength + 1, sizeof(*psrc))) == NULL)
                return -1;
-       if ((pdst = calloc((4 * mbslength) + 1, sizeof(*pdst))) == NULL)
+       if ((pdst = calloc((16 * mbslength) + 1, sizeof(*pdst))) == NULL)
                goto out;
        if (*mbdstp == NULL) {
-               if ((mdst = calloc((4 * mbslength) + 1, sizeof(*mdst))) == NULL)
+               if ((mdst = calloc((16 * mbslength) + 1, sizeof(*mdst))) == NULL)
                        goto out;
                *mbdstp = mdst;
        }
@@ -468,12 +468,13 @@
                        clen = 1;
                        cerr = 1;
                }
-               if (clen == 0)
+               if (clen == 0) {
                        /*
                         * NUL in input gives 0 return value. process
                         * as single NUL byte and keep going.
                         */
                        clen = 1;
+               }
                /* Advance buffer character pointer. */
                src++;
                /* Advance input pointer by number of bytes read. */