--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/generics/inference/8058199/T8058199.java	Tue Oct 14 12:00:39 2014 +0100
@@ -0,0 +1,75 @@
+/*
+ * 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 8058199
+ * @summary Code generation problem with javac skipping a checkcast instruction
+ */
+public class T8058199 {
+
+    final static String SYNTHETIC_CAST_TYPE = "[Ljava.lang.String;";
+
+    @SuppressWarnings("unchecked")
+    <Z> Z[] makeArr(Z z) { return (Z[])new Object[1]; }
+
+    <U> void check(U u) { }
+
+    void testMethod() {
+        test(() -> check(makeArr("")));
+    }
+
+    void testNewDiamond() {
+        class Check<X> {
+            Check(X x) { }
+        }
+        test(()-> new Check<>(makeArr("")));
+    }
+
+    void testNewGeneric() {
+        class Check {
+            <Z> Check(Z z) { }
+        }
+        test(()-> new Check(makeArr("")));
+    }
+
+    private void test(Runnable r) {
+        try {
+            r.run();
+            throw new AssertionError("Missing synthetic cast");
+        } catch (ClassCastException cce) {
+            if (!cce.getMessage().contains(SYNTHETIC_CAST_TYPE)) {
+                throw new AssertionError("Bad type in synthetic cast", cce);
+            }
+        }
+    }
+
+    public static void main(String[] args) {
+        T8058199 test = new T8058199();
+        test.testMethod();
+        test.testNewDiamond();
+        test.testNewGeneric();
+    }
+}