diff -r 8fdf463085e1 -r dca455dea3a7 test/compiler/7116216/StackOverflow.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/compiler/7116216/StackOverflow.java Tue Dec 20 12:33:05 2011 +0100 @@ -0,0 +1,64 @@ +/* + * 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 7116216 + * @summary The vm crashes when GC happens during throwing a StackOverflow exception + * + * @run main/othervm -Xcomp -Xbatch StackOverflow + */ + +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!"); + } +}