--- a/langtools/src/share/classes/com/sun/tools/javac/code/Symtab.java	Wed Jul 05 16:51:35 2017 +0200
+++ b/langtools/src/share/classes/com/sun/tools/javac/code/Symtab.java	Mon May 04 21:04:04 2009 -0700
@@ -119,6 +119,8 @@
     public final Type stringBuilderType;
     public final Type cloneableType;
     public final Type serializableType;
+    public final Type methodHandleType;
+    public final Type invokeDynamicType;
     public final Type throwableType;
     public final Type errorType;
     public final Type illegalArgumentExceptionType;
@@ -289,6 +291,24 @@
         }
     }
 
+    public void synthesizeMHTypeIfMissing(final Type type) {
+        final Completer completer = type.tsym.completer;
+        if (completer != null) {
+            type.tsym.completer = new Completer() {
+                public void complete(Symbol sym) throws CompletionFailure {
+                    try {
+                        completer.complete(sym);
+                    } catch (CompletionFailure e) {
+                        sym.flags_field |= (PUBLIC | ABSTRACT);
+                        ((ClassType) sym.type).supertype_field = objectType;
+                        // do not bother to create MH.type if not visibly declared
+                        // this sym just accumulates invoke(...) methods
+                    }
+                }
+            };
+        }
+    }
+
     public void synthesizeBoxTypeIfMissing(final Type type) {
         ClassSymbol sym = reader.enterClass(boxedName[type.tag]);
         final Completer completer = sym.completer;
@@ -405,6 +425,8 @@
         cloneableType = enterClass("java.lang.Cloneable");
         throwableType = enterClass("java.lang.Throwable");
         serializableType = enterClass("java.io.Serializable");
+        methodHandleType = enterClass("java.dyn.MethodHandle");
+        invokeDynamicType = enterClass("java.dyn.InvokeDynamic");
         errorType = enterClass("java.lang.Error");
         illegalArgumentExceptionType = enterClass("java.lang.IllegalArgumentException");
         exceptionType = enterClass("java.lang.Exception");
@@ -441,6 +463,8 @@
 
         synthesizeEmptyInterfaceIfMissing(cloneableType);
         synthesizeEmptyInterfaceIfMissing(serializableType);
+        synthesizeMHTypeIfMissing(methodHandleType);
+        synthesizeMHTypeIfMissing(invokeDynamicType);
         synthesizeBoxTypeIfMissing(doubleType);
         synthesizeBoxTypeIfMissing(floatType);