diff -r 48b0c2edb0df -r d8379f5d5a1d src/SemanticAnalysis.cpp
--- a/src/SemanticAnalysis.cpp	Sun Jul 29 18:02:13 2012 -0700
+++ b/src/SemanticAnalysis.cpp	Sun Jul 29 18:19:12 2012 -0700
@@ -717,10 +717,14 @@
     }
 
     Local<Type> returnType(zone_);
-    if (node->hasExplicitReturn() || node->fun()->isNative())
+    if (node->returnTag()) {
+        Local<String> tag(zone_, node->returnTag());
+        returnType = zone_->types()->getPrimitiveForTag(tag);
+    } else if (node->hasExplicitReturn() || node->fun()->isNative()) {
         returnType = zone_->types()->getPrimitive(PrimitiveType_Int32);
-    else
+    } else {
         returnType = zone_->types()->getVoid();
+    }
     if (!returnType)
         return false;