[src/trunk]: src/lib/libc/string PR lib/57141 - never decrement len without a...

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

details:   https://anonhg.NetBSD.org/src/rev/7ba9ebf944f7
branches:  trunk
changeset: 372814:7ba9ebf944f7
user:      kre <kre%NetBSD.org@localhost>
date:      Wed Dec 28 14:32:04 2022 +0000

description:
PR lib/57141 - never decrement len without actually performing a STEP.

diffstat:

 lib/libc/string/swab.c |  8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diffs (29 lines):

diff -r 834f719de981 -r 7ba9ebf944f7 lib/libc/string/swab.c
--- a/lib/libc/string/swab.c    Wed Dec 28 13:27:10 2022 +0000
+++ b/lib/libc/string/swab.c    Wed Dec 28 14:32:04 2022 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: swab.c,v 1.18 2011/01/04 17:14:07 martin Exp $ */
+/*     $NetBSD: swab.c,v 1.19 2022/12/28 14:32:04 kre Exp $    */
 
 /*
  * Copyright (c) 1988, 1993
@@ -37,7 +37,7 @@
 #if 0
 static char sccsid[] = "@(#)swab.c     8.1 (Berkeley) 6/4/93";
 #else
-__RCSID("$NetBSD: swab.c,v 1.18 2011/01/04 17:14:07 martin Exp $");
+__RCSID("$NetBSD: swab.c,v 1.19 2022/12/28 14:32:04 kre Exp $");
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -68,8 +68,8 @@
        }
 
        /* round to multiple of 8 */
-       while ((--len % 8) != 0)
-               STEP;
+       while ((len % 8) != 0)
+               len--, STEP;
        len /= 8;
        if (len == 0)
                return;