[src/trunk]: src/lib/libc/gen Make sure the kernel doesn't pass back 0 for pa...

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

details:   https://anonhg.NetBSD.org/src/rev/fe6716b739d3
branches:  trunk
changeset: 749994:fe6716b739d3
user:      matt <matt%NetBSD.org@localhost>
date:      Mon Dec 14 01:04:46 2009 +0000

description:
Make sure the kernel doesn't pass back 0 for pagesize.

diffstat:

 lib/libc/gen/getpagesize.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (33 lines):

diff -r ca98eeb82bb4 -r fe6716b739d3 lib/libc/gen/getpagesize.c
--- a/lib/libc/gen/getpagesize.c        Mon Dec 14 01:00:46 2009 +0000
+++ b/lib/libc/gen/getpagesize.c        Mon Dec 14 01:04:46 2009 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: getpagesize.c,v 1.9 2003/08/07 16:42:50 agc Exp $      */
+/*     $NetBSD: getpagesize.c,v 1.10 2009/12/14 01:04:46 matt Exp $    */
 
 /*
  * Copyright (c) 1989, 1993
@@ -34,13 +34,14 @@
 #if 0
 static char sccsid[] = "@(#)getpagesize.c      8.1 (Berkeley) 6/4/93";
 #else
-__RCSID("$NetBSD: getpagesize.c,v 1.9 2003/08/07 16:42:50 agc Exp $");
+__RCSID("$NetBSD: getpagesize.c,v 1.10 2009/12/14 01:04:46 matt Exp $");
 #endif
 #endif /* LIBC_SCCS and not lint */
 
 #include "namespace.h"
 #include <sys/param.h>
 #include <sys/sysctl.h>
+#include <assert.h>
 #include <unistd.h>
 
 #ifdef __weak_alias
@@ -61,6 +62,7 @@
                size = sizeof pagsz;
                if (sysctl(mib, 2, &pagsz, &size, NULL, 0) == -1)
                        return (-1);
+               _DIAGASSERT(pagsz);
        }
        return (pagsz);
 }