diff -ur /usr/src/packages/BUILD/avahi-0.6.17/avahi-compat-libdns_sd/compat.c ../avahi-compat-libdns_sd/compat.c
--- avahi-compat-libdns_sd/compat.c	2007-01-06 13:29:05.000000000 -0500
+++ avahi-compat-libdns_sd/compat.c	2007-03-07 16:32:59.000000000 -0500
@@ -612,12 +612,10 @@
     
     AVAHI_WARN_LINKAGE;
 
-    if (!ret_sdref)
+    if (!ret_sdref || !regtype)
         return kDNSServiceErr_BadParam;
     *ret_sdref = NULL;
 
-    assert(regtype);
-
     if (interface == kDNSServiceInterfaceIndexLocalOnly || flags != 0) {
         AVAHI_WARN_UNSUPPORTED;
         return kDNSServiceErr_Unsupported;
@@ -739,15 +737,10 @@
 
     AVAHI_WARN_LINKAGE;
 
-    if (!ret_sdref)
+    if (!ret_sdref || !name || !regtype || !domain || !callback)
         return kDNSServiceErr_BadParam;
     *ret_sdref = NULL;
 
-    assert(name);
-    assert(regtype);
-    assert(domain);
-    assert(callback);
-
     if (interface == kDNSServiceInterfaceIndexLocalOnly || flags != 0) {
         AVAHI_WARN_UNSUPPORTED;
         return kDNSServiceErr_Unsupported;
@@ -795,9 +788,8 @@
 
     AVAHI_WARN_LINKAGE;
 
-    assert(fullName);
-    assert(regtype);
-    assert(domain);
+    if (!fullName || !regtype || !domain)
+        return -1;
 
     if (avahi_service_name_join(fullName, kDNSServiceMaxDomainName, service, regtype, domain) < 0)
         return -1;
@@ -856,12 +848,10 @@
 
     AVAHI_WARN_LINKAGE;
 
-    if (!ret_sdref)
+    if (!ret_sdref || !callback)
         return kDNSServiceErr_BadParam;
     *ret_sdref = NULL;
 
-    assert(callback);
-
     if (interface == kDNSServiceInterfaceIndexLocalOnly ||
         (flags != kDNSServiceFlagsBrowseDomains &&  flags != kDNSServiceFlagsRegistrationDomains)) {
         AVAHI_WARN_UNSUPPORTED;
@@ -1100,14 +1090,14 @@
 
     AVAHI_WARN_LINKAGE;
 
-    if (!ret_sdref)
+    if (!ret_sdref || !regtype)
         return kDNSServiceErr_BadParam;
     *ret_sdref = NULL;
     
-    if (!regtype)
-	    return kDNSServiceErr_BadParam;
-	
-    assert(txtRecord || txtLen == 0);
+    if (!txtRecord) {
+        txtLen = 1;
+        txtRecord = "";
+    }
 
     if (interface == kDNSServiceInterfaceIndexLocalOnly || flags) {
         AVAHI_WARN_UNSUPPORTED;