--- a/langtools/src/share/classes/com/sun/tools/javac/code/Types.java	Tue Jul 08 15:13:16 2014 +0200
+++ b/langtools/src/share/classes/com/sun/tools/javac/code/Types.java	Tue Jul 08 15:42:04 2014 +0100
@@ -1312,7 +1312,8 @@
                 UndetVar undetvar = (UndetVar)t;
                 WildcardType wt = (WildcardType)s;
                 switch(wt.kind) {
-                    case UNBOUND: //similar to ? extends Object
+                    case UNBOUND:
+                        break;
                     case EXTENDS: {
                         Type bound = wildUpperBound(s);
                         undetvar.addBound(InferenceBound.UPPER, bound, this);

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/generics/inference/8043926/T8043926.java	Tue Jul 08 15:42:04 2014 +0100
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @bug 8043926
+ * @summary javac, code valid in 7 is not compiling for 8
+ * @compile T8043926.java
+ */
+class T8043926 {
+    interface Iface<T1> {}
+
+    static class Impl implements Iface<Impl> {}
+
+    static class Acceptor<T2 extends Iface<T2>> {
+        public Acceptor(T2 obj) {}
+    }
+
+    void test(Impl impl) {
+        Acceptor<?> acceptor1 = new Acceptor<>(impl);
+        Acceptor<? extends Object> acceptor2 = new Acceptor<>(impl);
+    }
+}