New version of gcc used for fedora 15 is reporting errors with -Werror also for
variables set, but never used.
Where it was obvious I fixed the code. In other cases avoid this error by:
(void)variable;
diff -ru openvas-scanner-3.2.2/src/attack.c openvas-scanner-3.2.2.new/src/attack.c
--- openvas-scanner-3.2.2/src/attack.c	2011-02-21 10:40:34.000000000 +0100
+++ openvas-scanner-3.2.2.new/src/attack.c	2011-03-26 13:00:43.000000000 +0100
@@ -939,7 +939,9 @@
 {
   int max_hosts = 0;
   int num_tested = 0;
+  /* variable set but not used
   int host_pending = 0;
+  */
   char hostname[1024];
   char *hostlist;
   struct in6_addr host_ip;
@@ -1139,7 +1141,9 @@
             }
         }
 
+      /* variable set but not used
       host_pending = 0;
+      */
       memcpy (&addrs.ip6, &host_ip, sizeof (struct in6_addr));
 
       /* Do we have the right to test this host ? */
@@ -1156,9 +1160,11 @@
           int s;
           char *MAC = NULL;
           int mac_err = -1;
+	  /*variable set but not used
           struct in_addr addr;
 
           addr.s_addr = host_ip.s6_addr32[3];
+	  */
           if (preferences_use_mac_addr (preferences)
               && v6_is_local_ip (&host_ip))
             {
diff -ru openvas-scanner-3.2.2/src/nasl_plugins.c openvas-scanner-3.2.2.new/src/nasl_plugins.c
--- openvas-scanner-3.2.2/src/nasl_plugins.c	2011-02-21 10:40:34.000000000 +0100
+++ openvas-scanner-3.2.2.new/src/nasl_plugins.c	2011-03-26 13:05:19.000000000 +0100
@@ -253,6 +253,10 @@
 
   if (preferences_benice (NULL))
     nice_retval = nice (-5);
+  
+  /* avoid compilation error as variable nice_retval is set but not used now */
+  (void)nice_retval;
+
   // @todo: Check value of nice_retval to see if it was successful.
   // Keep in mind that even -1 can mean success here; see man page of nice
   // for details.
diff -ru openvas-scanner-3.2.2/src/ntp_11.c openvas-scanner-3.2.2.new/src/ntp_11.c
--- openvas-scanner-3.2.2/src/ntp_11.c	2011-02-21 10:40:34.000000000 +0100
+++ openvas-scanner-3.2.2.new/src/ntp_11.c	2011-03-26 13:12:06.000000000 +0100
@@ -812,11 +812,11 @@
   while (plugins->next)
     {
       struct arglist *args = plugins->value;
-      struct arglist *d, *deps;
+      struct arglist *deps;
       if (!args)
         goto nxt;
 
-      d = deps = plug_get_deps (args);
+      deps = plug_get_deps (args);
       if (deps == NULL)
         goto nxt;
 
diff -ru openvas-scanner-3.2.2/src/openvassd.c openvas-scanner-3.2.2.new/src/openvassd.c
--- openvas-scanner-3.2.2/src/openvassd.c	2011-02-21 10:40:34.000000000 +0100
+++ openvas-scanner-3.2.2.new/src/openvassd.c	2011-03-26 13:13:56.000000000 +0100
@@ -429,6 +429,10 @@
   /* Everyone runs with a nicelevel of 10 */
   if (preferences_benice (prefs))
     nice_retval = nice (10);
+
+  /* avoid compilation error as variable nice_retval is set but not used */
+  (void) nice_retval;
+
   // @todo: Check value of nice_retval to see if it was successful.
   // Keep in mind that even -1 can mean success here; see man page of nice
   // for details.
diff -ru openvas-scanner-3.2.2/src/oval_plugins.c openvas-scanner-3.2.2.new/src/oval_plugins.c
--- openvas-scanner-3.2.2/src/oval_plugins.c	2011-02-21 10:40:34.000000000 +0100
+++ openvas-scanner-3.2.2.new/src/oval_plugins.c	2011-03-26 13:18:28.000000000 +0100
@@ -442,6 +442,9 @@
                 ("This OVAL file contains the following definitions:\n",
                  g_strndup (descriptions, 3100),
                  "\n(list cut due to memory limitations)", NULL);
+
+		/* avoid compilation error as variable description is set but never used */
+		(void) description;
             }
           else
             {
diff -ru openvas-scanner-3.2.2/src/preferences.c openvas-scanner-3.2.2.new/src/preferences.c
--- openvas-scanner-3.2.2/src/preferences.c	2011-02-21 10:40:34.000000000 +0100
+++ openvas-scanner-3.2.2.new/src/preferences.c	2011-03-26 21:31:23.000000000 +0100
@@ -452,7 +452,10 @@
 int
 preferences_drop_privileges (struct arglist *preferences, char *oid)
 {
+  /* variable set but never used
   char *pref;
+  */
+
   int ret = 0;
 
   if (preferences == NULL)
@@ -464,7 +467,9 @@
         ret = 1;
     }
 
+  /* variable set but never used
   pref = arg_get_value (preferences, "drop_privileges");
+  */
   return ret;
 }
 
diff -ru openvas-scanner-3.2.2/src/shared_socket.c openvas-scanner-3.2.2.new/src/shared_socket.c
--- openvas-scanner-3.2.2/src/shared_socket.c	2011-02-21 10:40:34.000000000 +0100
+++ openvas-scanner-3.2.2.new/src/shared_socket.c	2011-03-26 21:35:51.000000000 +0100
@@ -96,10 +96,15 @@
 
   char *buffer = NULL;
   int bufsz = 0;
+  /* variable set but never used
   int e;
+  */
   int type;
 
+  /* variable set but never used
   e = internal_recv (soc, &buffer, &bufsz, &type);
+  */
+  internal_recv (soc, &buffer, &bufsz, &type);
   if ((type & INTERNAL_COMM_MSG_SHARED_SOCKET) == 0
       || (type & INTERNAL_COMM_SHARED_SOCKET_DORECVMSG) == 0)
     {
diff -ru openvas-scanner-3.2.2/src/sighand.c openvas-scanner-3.2.2.new/src/sighand.c
--- openvas-scanner-3.2.2/src/sighand.c	2011-02-21 10:40:34.000000000 +0100
+++ openvas-scanner-3.2.2.new/src/sighand.c	2011-03-26 21:39:53.000000000 +0100
@@ -46,9 +46,14 @@
 void
 let_em_die (int pid)
 {
+  /* variable x set but never used
   int status, x;
 
   x = waitpid (pid, &status, WNOHANG);
+  */
+
+  int status;
+  waitpid (pid, &status, WNOHANG);
 }