Index: dev/core/src/com/google/gwt/dev/javac/JdtCompiler.java
===================================================================
--- dev/core/src/com/google/gwt/dev/javac/JdtCompiler.java	(revision 3647)
+++ dev/core/src/com/google/gwt/dev/javac/JdtCompiler.java	(working copy)
@@ -211,10 +211,10 @@
         CompilerOptions.IGNORE);
     settings.put(CompilerOptions.OPTION_LocalVariableAttribute,
         CompilerOptions.GENERATE);
-    settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_1_5);
-    settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_5);
+    settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_1_6);
+    settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_6);
     settings.put(CompilerOptions.OPTION_TargetPlatform,
-        CompilerOptions.VERSION_1_5);
+        CompilerOptions.VERSION_1_6);
 
     // This is needed by TypeOracleBuilder to parse metadata.
     if (enableDocCommentSupport) {
Index: dev/core/src/com/google/gwt/dev/shell/rewrite/ForceClassVersion15.java
===================================================================
--- dev/core/src/com/google/gwt/dev/shell/rewrite/ForceClassVersion15.java	(revision 0)
+++ dev/core/src/com/google/gwt/dev/shell/rewrite/ForceClassVersion15.java	(revision 0)
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2008 Google Inc.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.google.gwt.dev.shell.rewrite;
+
+import com.google.gwt.dev.asm.ClassAdapter;
+import com.google.gwt.dev.asm.ClassVisitor;
+import com.google.gwt.dev.asm.Opcodes;
+
+/**
+ * Performs any rewriting necessary to ensure that class files are 1.5
+ * compatible.
+ */
+class ForceClassVersion15 extends ClassAdapter {
+
+  public ForceClassVersion15(ClassVisitor v) {
+    super(v);
+  }
+
+  @Override
+  public void visit(final int version, final int access, final String name,
+      final String signature, final String superName, final String[] interfaces) {
+    super.visit(Opcodes.V1_5, access, name, signature, superName, interfaces);
+  }
+}

Property changes on: dev\core\src\com\google\gwt\dev\shell\rewrite\ForceClassVersion15.java
___________________________________________________________________
Added: svn:mime-type
   + text/x-java
Added: svn:eol-style
   + native

Index: dev/core/src/com/google/gwt/dev/shell/rewrite/HostedModeClassRewriter.java
===================================================================
--- dev/core/src/com/google/gwt/dev/shell/rewrite/HostedModeClassRewriter.java	(revision 3647)
+++ dev/core/src/com/google/gwt/dev/shell/rewrite/HostedModeClassRewriter.java	(working copy)
@@ -187,6 +187,10 @@
 
     v = new RewriteJsniMethods(v);
 
+    if (Double.parseDouble(System.getProperty("java.class.version")) < Opcodes.V1_6) {
+      v = new ForceClassVersion15(v);
+    }
+
     new ClassReader(classBytes).accept(v, 0);
     return writer.toByteArray();
   }