[src/trunk]: src/bin/sh PR bin/52348

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

details:   https://anonhg.NetBSD.org/src/rev/fb1fa22fe958
branches:  trunk
changeset: 355294:fb1fa22fe958
user:      kre <kre%NetBSD.org@localhost>
date:      Mon Jul 24 12:34:45 2017 +0000

description:
PR bin/52348

Silence nuisance testing environments - avoid << of a negative number
(a signed char -- in a hash function, the result is irrelevant, as long
as it is repeatable).

diffstat:

 bin/sh/alias.c |  8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diffs (29 lines):

diff -r 9578fe0d6c08 -r fb1fa22fe958 bin/sh/alias.c
--- a/bin/sh/alias.c    Mon Jul 24 10:34:54 2017 +0000
+++ b/bin/sh/alias.c    Mon Jul 24 12:34:45 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: alias.c,v 1.15 2014/06/18 18:17:30 christos Exp $      */
+/*     $NetBSD: alias.c,v 1.16 2017/07/24 12:34:45 kre Exp $   */
 
 /*-
  * Copyright (c) 1993
@@ -37,7 +37,7 @@
 #if 0
 static char sccsid[] = "@(#)alias.c    8.3 (Berkeley) 5/4/95";
 #else
-__RCSID("$NetBSD: alias.c,v 1.15 2014/06/18 18:17:30 christos Exp $");
+__RCSID("$NetBSD: alias.c,v 1.16 2017/07/24 12:34:45 kre Exp $");
 #endif
 #endif /* not lint */
 
@@ -268,8 +268,8 @@
 {
        unsigned int hashval;
 
-       hashval = *p << 4;
+       hashval = *(const unsigned char *)p << 4;
        while (*p)
-               hashval+= *p++;
+               hashval += *p++;
        return &atab[hashval % ATABSIZE];
 }