snmp plugin: Added a note about a potential bug that needs fixing.

Negative absolute (gauge) values may be casted to an unsigned integer
variable on their way throught he daemon, producing VERY HIGH tempera-
tures in winter..

diff --git a/src/snmp.c b/src/snmp.c
index 4d6e769..995f39d 100644 (file)
--- a/src/snmp.c
+++ b/src/snmp.c
@@ -692,6 +692,7 @@ static void csnmp_host_open_session (host_definition_t *host)
   }
 } /* void csnmp_host_open_session */
 
+/* TODO: Check if negative values wrap around. Problem: negative temperatures. */
 static value_t csnmp_value_list_to_value (struct variable_list *vl, int type,
     double scale, double shift)
 {