# HG changeset patch
# User Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
# Date 1328828073 -3600
# Node ID 2bab0e314b5c7ce69a5839b276a4408c38e67499
# Parent  f55914bc1d6724dc7a4ec05c4c0aa9e4e9f76834
Fixed a bug in the canonicalizer of the UnboxNode (brought up by Truffle).

diff -r f55914bc1d67 -r 2bab0e314b5c graal/com.oracle.max.graal.nodes/src/com/oracle/max/graal/nodes/extended/UnboxNode.java
--- a/graal/com.oracle.max.graal.nodes/src/com/oracle/max/graal/nodes/extended/UnboxNode.java	Thu Feb 09 21:26:26 2012 +0100
+++ b/graal/com.oracle.max.graal.nodes/src/com/oracle/max/graal/nodes/extended/UnboxNode.java	Thu Feb 09 23:54:33 2012 +0100
@@ -62,25 +62,27 @@
         if (source.isConstant()) {
             CiConstant constant = source.asConstant();
             Object o = constant.asObject();
-            switch (kind()) {
-                case Boolean:
-                    return ConstantNode.forBoolean((Boolean) o, graph());
-                case Byte:
-                    return ConstantNode.forByte((Byte) o, graph());
-                case Char:
-                    return ConstantNode.forChar((Character) o, graph());
-                case Short:
-                    return ConstantNode.forShort((Short) o, graph());
-                case Int:
-                    return ConstantNode.forInt((Integer) o, graph());
-                case Long:
-                    return ConstantNode.forLong((Long) o, graph());
-                case Float:
-                    return ConstantNode.forFloat((Long) o, graph());
-                case Double:
-                    return ConstantNode.forDouble((Long) o, graph());
-                default:
-                    assert false;
+            if (o != null) {
+                switch (kind()) {
+                    case Boolean:
+                        return ConstantNode.forBoolean((Boolean) o, graph());
+                    case Byte:
+                        return ConstantNode.forByte((Byte) o, graph());
+                    case Char:
+                        return ConstantNode.forChar((Character) o, graph());
+                    case Short:
+                        return ConstantNode.forShort((Short) o, graph());
+                    case Int:
+                        return ConstantNode.forInt((Integer) o, graph());
+                    case Long:
+                        return ConstantNode.forLong((Long) o, graph());
+                    case Float:
+                        return ConstantNode.forFloat((Long) o, graph());
+                    case Double:
+                        return ConstantNode.forDouble((Long) o, graph());
+                    default:
+                        assert false;
+                }
             }
         }
         return this;