test/hotspot/jtreg/compiler/c2/TestNPEHeapBased.java
changeset 47216 71c04702a3d5
parent 44403 1b4e73257070
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/compiler/c2/TestNPEHeapBased.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017 SAP SE. 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 8176518
+ * @summary Invalid ImplicitNullChecks when heap base not protected
+ *
+ * @run main/othervm -XX:ObjectAlignmentInBytes=16 -XX:HeapBaseMinAddress=64g
+ *      -XX:-TieredCompilation -Xbatch
+ *      compiler.c2.TestNPEHeapBased
+ * @requires vm.bits == "64"
+ */
+
+package compiler.c2;
+public class TestNPEHeapBased {
+
+    TestNPEHeapBased instance = null;
+    int i = 0;
+
+    public void set_i(int value) {
+        instance.i = value;
+    }
+
+
+    static final int loop_cnt = 200000;
+
+    public static void main(String args[]){
+        TestNPEHeapBased xyz = new TestNPEHeapBased();
+        xyz.instance = xyz;
+        for (int x = 0; x < loop_cnt; x++) xyz.set_i(x);
+        xyz.instance = null;
+        try {
+            xyz.set_i(0);
+        } catch (NullPointerException npe) {
+            System.out.println("Got expected NullPointerException:");
+            npe.printStackTrace();
+            return;
+        }
+        throw new InternalError("NullPointerException is missing!");
+    }
+
+}