diff -r eaa43f765cbd -r 06a0015b6a5c jitcraft/Code.h
--- a/jitcraft/Code.h	Fri Jul 20 00:03:10 2012 -0700
+++ b/jitcraft/Code.h	Mon Jul 23 01:19:44 2012 -0700
@@ -69,7 +69,7 @@
         return Type::cast(locals_->at(index));
     }
     unsigned nlocals() {
-        return locals_->length();
+        return locals_ ? locals_->length() : 0;
     }
     unsigned maxStackDepth() {
         return maxStackDepth_;