| /* |
| * Copyright (c) 2011, 2012, 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 7116216 |
| * @summary The vm crashes when GC happens during throwing a StackOverflow exception |
| * |
| * @run main/othervm -Xcomp -Xbatch StackOverflow |
| */ |
| |
| public class StackOverflow { |
| static String stackOverflow_largeFrame_liveOopForGC; |
| |
| public static int stackOverflow_largeFrame(int call_count, String liveOopForGC) { |
| try { |
| int return_count = stackOverflow_largeFrame(++call_count, liveOopForGC); |
| if (return_count == 0) { |
| try { |
| LargeFrame.method_with_many_locals(liveOopForGC, 2,3,4,5,6,7,liveOopForGC); |
| } catch (StackOverflowError e2) { |
| // access liveOopForGC to make it a live variable |
| stackOverflow_largeFrame_liveOopForGC = liveOopForGC; |
| } |
| } |
| return return_count - 1; |
| } catch (StackOverflowError e) { |
| // Return a value that is large enough such that no unrecoverable |
| // stack overflow will occur afterwards, but that is small enough |
| // such that calling LargeFrame.method_with_many_locals() will |
| // cause a StackOverflowError. |
| // Don't use a call here because we're out of stack space anyway! |
| int tmp = call_count / 2; |
| return (tmp < 100 ? tmp : 100); |
| } |
| } |
| public static void main(String args[]) { |
| LargeFrame.method_with_many_locals(new Object(), 2,3,4,5,6,7,new Object()); |
| |
| stackOverflow_largeFrame(0, "this is a live oop to test GC"); |
| System.out.println("finished ok!"); |
| } |
| } |