diff test/compiler/5091921/Test7005594.java @ 3345:bad7ecd0b6ed

5091921: Sign flip issues in loop optimizer Summary: Fix integer overflow problem in the code generated by loop optimizer. Reviewed-by: never
author kvn
date Wed, 04 May 2011 13:12:42 -0700
parents
children 231c2b41ea4d
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/5091921/Test7005594.java	Wed May 04 13:12:42 2011 -0700
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2011, 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 7005594
+ * @summary Array overflow not handled correctly with loop optimzations
+ *
+ * @run main/othervm -Xms2048m -Xcomp -XX:CompileOnly=Test7005594.test Test7005594
+ */
+
+public class Test7005594 {
+
+      static int test(byte a[]){
+          int result=0;
+          for( int i=0; i<a.length; i+=((0x7fffffff>>1)+1) ){
+              result += a[i];
+          }
+          return result;
+      }
+
+      public static void main(String [] args){
+          byte a[]=new byte[(0x7fffffff>>1)+2];
+          int result = 0;
+          try {
+              result = test(a);
+          } catch (ArrayIndexOutOfBoundsException e) {
+              e.printStackTrace(System.out);
+              System.out.println("Passed");
+              System.exit(95);
+          }
+          System.out.println(result);
+          System.out.println("FAILED");
+          System.exit(97);
+      }
+
+}
+