--- old/src/cpu/zero/vm/relocInfo_zero.cpp	2013-08-19 16:51:35.000000000 -0700
+++ new/src/cpu/zero/vm/relocInfo_zero.cpp	2013-08-19 16:51:35.000000000 -0700
@@ -37,6 +37,7 @@
 
 address Relocation::pd_call_destination(address orig_addr) {
   ShouldNotCallThis();
+  return NULL;
 }
 
 void Relocation::pd_set_call_destination(address x) {
@@ -45,6 +46,7 @@
 
 address Relocation::pd_get_address_from_code() {
   ShouldNotCallThis();
+  return NULL;
 }
 
 address* Relocation::pd_address_in_code() {