src/java.base/share/classes/java/lang/invoke/DirectMethodHandle.java

@@ -76,11 +76,11 @@
     static DirectMethodHandle make(byte refKind, Class<?> refc, MemberName member, Class<?> callerClass) {
         MethodType mtype = member.getMethodOrFieldType();
         if (!member.isStatic()) {
             if (!member.getDeclaringClass().isAssignableFrom(refc) || member.isConstructor())
                 throw new InternalError(member.toString());
-            mtype = mtype.insertParameterTypes(0, refc);
+            mtype = mtype.insertParameterTypes(0, refc.isValue() ? refc.asValueType() : refc);
         }
         if (!member.isField()) {
             // refKind reflects the original type of lookup via findSpecial or
             // findVirtual etc.
             switch (refKind) {

@@ -134,10 +134,12 @@
         return make(member.getDeclaringClass(), member);
     }
     private static DirectMethodHandle makeAllocator(MemberName ctor) {
         assert(ctor.isConstructor() && ctor.getName().equals("<init>"));
         Class<?> instanceClass = ctor.getDeclaringClass();
+        if (instanceClass.isValue())
+            instanceClass = instanceClass.asValueType();  // convert to Q-Type
         ctor = ctor.asConstructor();
         assert(ctor.isConstructor() && ctor.getReferenceKind() == REF_newInvokeSpecial) : ctor;
         MethodType mtype = ctor.getMethodType().changeReturnType(instanceClass);
         LambdaForm lform = preparedLambdaForm(ctor);
         MemberName init = ctor.asSpecial();