langtools/test/tools/javac/8074306/TestSyntheticNullChecks.java
changeset 29295 5a367770a074
child 29425 c88514c93554
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/8074306/TestSyntheticNullChecks.java	Thu Mar 05 15:03:07 2015 +0000
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2015, 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 8074306
+ * @summary NULLCHK is emitted as Object.getClass
+ * @compile -source 6 -target 6 TestSyntheticNullChecks.java
+ * @run main TestSyntheticNullChecks 6
+ * @clean TestSyntheticNullChecks*
+ * @compile -source 7 -target 7 TestSyntheticNullChecks.java
+ * @run main TestSyntheticNullChecks 7
+ * @clean TestSyntheticNullChecks*
+ * @compile TestSyntheticNullChecks.java
+ * @run main TestSyntheticNullChecks 9
+ */
+public class TestSyntheticNullChecks {
+
+    class Inner { }
+
+    static void generateSyntheticNPE(TestSyntheticNullChecks outer) {
+        outer.new Inner(); //javac will generate a synthetic NPE check for 'outer'
+    }
+
+    public static void main(String[] args) {
+        int version = Integer.valueOf(args[0]);
+        boolean useObjects = version >= 7;
+        try {
+            generateSyntheticNPE(null);
+        } catch (NullPointerException npe) {
+            boolean hasRequireNotNull = false;
+            for (StackTraceElement e : npe.getStackTrace()) {
+                if (e.getClassName().equals("java.util.Objects") &&
+                        e.getMethodName().equals("requireNonNull")) {
+                    hasRequireNotNull = true;
+                    break;
+                }
+            }
+            if (hasRequireNotNull != useObjects) {
+                throw new AssertionError();
+            }
+        }
+    }
+}