From: Aurelien Reynaud <collectd@wattapower.net>
Date: Wed, 12 May 2010 09:55:05 +0000 (+0200)
Subject: snmp.c: compilation fixes for AIX
X-Git-Tag: collectd-4.9.3~14
X-Git-Url: https://git.octo.it/?p=collectd.git;a=commitdiff_plain;h=df69fe8118215a80bb1f2e4b1a68c508abffb054

snmp.c: compilation fixes for AIX

The C and C++ standards allows the character type char to be signed or
unsigned, depending on the platform and compiler. Most systems,
including x86 GNU/Linux and Microsoft Windows, use signed char, but
those based on PowerPC and ARM processors typically use unsigned char.

This patch fixes a "comparison is always true" warning on AIX (powerpc)
which leads the compilation to abort because of the -Werror flag.

Being unsigned by default, a char is always >0.

Signed-off-by: Aurelien Reynaud <collectd@wattapower.net>
Signed-off-by: Florian Forster <octo@huhu.verplant.org>
---

diff --git a/src/snmp.c b/src/snmp.c
index 693cd894..8e72ce60 100644
--- a/src/snmp.c
+++ b/src/snmp.c
@@ -965,7 +965,7 @@ static int csnmp_strvbcopy (char *dst, /* {{{ */
   for (i = 0; i < num_chars; i++)
   {
     /* Check for control characters. */
-    if ((src[i] >= 0) && (src[i] < 32))
+    if ((unsigned char)src[i] < 32)
       return (csnmp_strvbcopy_hexstring (dst, vb, dst_size));
     dst[i] = src[i];
   }