langtools/test/tools/javac/BadOptimization/DeadCode1.java
changeset 10 06bc494ca11e
child 5520 86e4b9a9da40
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/BadOptimization/DeadCode1.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,56 @@
+/*
+ * Copyright 1999 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 4057345 4120016 4120014
+ * @summary try-catch 1:  Verify that overzealous dead-code elimination no
+ * longer removes live code.
+ * @author dps
+ *
+ * @run clean DeadCode1
+ * @run compile -O DeadCode1.java
+ * @run main DeadCode1
+ */
+
+public class DeadCode1
+{
+    public static int test() {
+        Object[] arrayref = null;
+        try {
+            Object obj = arrayref[0];
+            return 2;
+        } catch (NullPointerException e)  {
+            return 0;
+        }
+    }
+
+
+    public static void main(String[] args) {
+        int ret = test();
+        if (ret == 2)
+            throw new RuntimeException("test() = 2; accidental removal of live code");
+        else
+            System.out.println("correct dead-code elimination");
+    }
+}