bdelsart@3372: /*
bdelsart@3372:  * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
bdelsart@3372:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
bdelsart@3372:  *
bdelsart@3372:  * This code is free software; you can redistribute it and/or modify it
bdelsart@3372:  * under the terms of the GNU General Public License version 2 only, as
bdelsart@3372:  * published by the Free Software Foundation.
bdelsart@3372:  *
bdelsart@3372:  * This code is distributed in the hope that it will be useful, but WITHOUT
bdelsart@3372:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
bdelsart@3372:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
bdelsart@3372:  * version 2 for more details (a copy is included in the LICENSE file that
bdelsart@3372:  * accompanied this code).
bdelsart@3372:  *
bdelsart@3372:  * You should have received a copy of the GNU General Public License version
bdelsart@3372:  * 2 along with this work; if not, write to the Free Software Foundation,
bdelsart@3372:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
bdelsart@3372:  *
bdelsart@3372:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
bdelsart@3372:  * or visit www.oracle.com if you need additional information or have any
bdelsart@3372:  * questions.
bdelsart@3372:  *
bdelsart@3372:  */
bdelsart@3372: 
bdelsart@3372: /**
bdelsart@3372:  * @test
bdelsart@3372:  * @bug 7116216
bdelsart@3372:  * @summary The vm crashes when GC happens during throwing a StackOverflow exception
bdelsart@3372:  *
bdelsart@3372:  * @run main/othervm -Xcomp -Xbatch StackOverflow
bdelsart@3372:  */
bdelsart@3372: 
bdelsart@3372: class StackOverflow {
bdelsart@3372:     static String stackOverflow_largeFrame_liveOopForGC;
bdelsart@3372: 
bdelsart@3372:     public static int stackOverflow_largeFrame(int call_count, String liveOopForGC) {
bdelsart@3372:         try {
bdelsart@3372:             int return_count = stackOverflow_largeFrame(++call_count, liveOopForGC);
bdelsart@3372:             if (return_count == 0) {
bdelsart@3372:                 try {
bdelsart@3372:                     LargeFrame.method_with_many_locals(liveOopForGC, 2,3,4,5,6,7,liveOopForGC);
bdelsart@3372:                 } catch (StackOverflowError e2) {
bdelsart@3372:                     // access liveOopForGC to make it a live variable
bdelsart@3372:                     stackOverflow_largeFrame_liveOopForGC = liveOopForGC;
bdelsart@3372:                 }
bdelsart@3372:             }
bdelsart@3372:             return return_count - 1;
bdelsart@3372:         } catch (StackOverflowError e) {
bdelsart@3372:             // Return a value that is large enough such that no unrecoverable
bdelsart@3372:             // stack overflow will occur afterwards, but that is small enough
bdelsart@3372:             // such that calling LargeFrame.method_with_many_locals() will
bdelsart@3372:             // cause a StackOverflowError.
bdelsart@3372:             // Don't use a call here because we're out of stack space anyway!
bdelsart@3372:             int tmp = call_count / 2;
bdelsart@3372:             return (tmp < 100 ? tmp : 100);
bdelsart@3372:         }
bdelsart@3372:     }
bdelsart@3372:     public static void main(String args[]) {
bdelsart@3372:         LargeFrame.method_with_many_locals(new Object(), 2,3,4,5,6,7,new Object());
bdelsart@3372: 
bdelsart@3372:         stackOverflow_largeFrame(0, "this is a live oop to test GC");
bdelsart@3372:         System.out.println("finished ok!");
bdelsart@3372:     }
bdelsart@3372: }