[src/trunk]: src/usr.bin/tr Add comment to explain the const issue to avoid f...

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

details:   https://anonhg.NetBSD.org/src/rev/fe36c039ea3c
branches:  trunk
changeset: 769382:fe36c039ea3c
user:      joerg <joerg%NetBSD.org@localhost>
date:      Wed Sep 07 22:59:19 2011 +0000

description:
Add comment to explain the const issue to avoid future trouble.

diffstat:

 usr.bin/tr/str.c |  8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diffs (29 lines):

diff -r baec7e1d9f49 -r fe36c039ea3c usr.bin/tr/str.c
--- a/usr.bin/tr/str.c  Wed Sep 07 21:32:07 2011 +0000
+++ b/usr.bin/tr/str.c  Wed Sep 07 22:59:19 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: str.c,v 1.14 2011/09/07 18:21:41 riz Exp $     */
+/*     $NetBSD: str.c,v 1.15 2011/09/07 22:59:19 joerg Exp $   */
 
 /*-
  * Copyright (c) 1991, 1993
@@ -34,7 +34,7 @@
 #if 0
 static char sccsid[] = "@(#)str.c      8.2 (Berkeley) 4/28/95";
 #endif
-__RCSID("$NetBSD: str.c,v 1.14 2011/09/07 18:21:41 riz Exp $");
+__RCSID("$NetBSD: str.c,v 1.15 2011/09/07 22:59:19 joerg Exp $");
 #endif /* not lint */
 
 #include <sys/types.h>
@@ -151,6 +151,10 @@
        int *set;
 } CLASS;
 
+/*
+ * classes[] is modified in genclass after passing through bsearch,
+ * which would result in silently discarding of const.
+ */
 static CLASS classes[] = {
        { "alnum",  isalnum,  NULL, },
        { "alpha",  isalpha,  NULL, },