[Truffle] Hash#map with an empty hash.

jruby · Mar 12, 2015 · 7fe3c36 · 7fe3c36
1 parent 18d9c88
commit 7fe3c36
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/truffle/src/main/java/org/jruby/truffle/nodes/core/HashNodes.java b/truffle/src/main/java/org/jruby/truffle/nodes/core/HashNodes.java
@@ -920,6 +920,11 @@ public MapNode(MapNode prev) {
             super(prev);
         }
 
+        @Specialization(guards = "isNull")
+        public RubyArray mapNull(VirtualFrame frame, RubyHash hash, RubyProc block) {
+            return new RubyArray(getContext().getCoreLibrary().getArrayClass(), null, 0);
+        }
+
         @ExplodeLoop
         @Specialization(guards = {"!isNull", "!isBuckets"})
         public RubyArray mapPackedArray(VirtualFrame frame, RubyHash hash, RubyProc block) {