diff -r dabd8d202164 -r db4caa99ef11 src/cpu/x86/vm/templateTable_x86_32.cpp
--- a/src/cpu/x86/vm/templateTable_x86_32.cpp	Tue Dec 23 06:16:53 2008 -0800
+++ b/src/cpu/x86/vm/templateTable_x86_32.cpp	Wed Dec 24 13:06:09 2008 -0800
@@ -137,7 +137,7 @@
         // Do the actual store
         // noreg means NULL
         if (val == noreg) {
-          __ movl(Address(rdx, 0), NULL_WORD);
+          __ movl(Address(rdx, 0), (int32_t)NULL_WORD);
           // No post barrier for NULL
         } else {
           __ movl(Address(rdx, 0), val);