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changeset 7985:ab826603e572

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8007475: Memory stomp with UseMallocOnly Summary: Fix off-by-one error Reviewed-by: coleenp, hseigel
author simonis
date Mon, 04 Feb 2013 13:14:12 -0500
parents ce5467120c84
children a401757763f9
files src/share/vm/classfile/stackMapFrame.hpp test/runtime/8007475/StackMapFrameTest.java
diffstat 2 files changed, 42 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/src/share/vm/classfile/stackMapFrame.hpp	Sun Feb 03 17:12:31 2013 -0500
+++ b/src/share/vm/classfile/stackMapFrame.hpp	Mon Feb 04 13:14:12 2013 -0500
@@ -178,7 +178,7 @@
 #ifdef DEBUG
     // Put bogus type to indicate it's no longer valid.
     if (_stack_mark != -1) {
-      for (int i = _stack_mark; i >= _stack_size; --i) {
+      for (int i = _stack_mark - 1; i >= _stack_size; --i) {
         _stack[i] = VerificationType::bogus_type();
       }
     }
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/8007475/StackMapFrameTest.java	Mon Feb 04 13:14:12 2013 -0500
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2013, 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 8007475
+ * @summary Test memory stomp in stack map test
+ * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseMallocOnly StackMapFrameTest
+ */
+public class StackMapFrameTest {
+
+  public static void foo() {
+    Object o = new Object();
+  }
+
+  public static void main(String args[]) {
+    for (int i = 0; i < 25000; i++) {
+      foo();
+    }
+  }
+}