aoqi@0: /*
aoqi@0:  * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /*
aoqi@0:  * @test
aoqi@0:  * @bug 6855164
aoqi@0:  * @summary SIGSEGV during compilation of method involving loop over CharSequence
aoqi@0:  * @run main/othervm -Xbatch Test
aoqi@0:  */
aoqi@0: 
aoqi@0: public class Test{
aoqi@0:     public static void main(String[] args) throws Exception {
aoqi@0:         StringBuffer builder = new StringBuffer();
aoqi@0: 
aoqi@0:         for(int i = 0; i < 100; i++)
aoqi@0:             builder.append("I am the very model of a modern major general\n");
aoqi@0: 
aoqi@0:         for(int j = 0; j < builder.length(); j++){
aoqi@0:             previousSpaceIndex(builder, j);
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     private static final int previousSpaceIndex(CharSequence sb, int seek) {
aoqi@0:         seek--;
aoqi@0:         while (seek > 0) {
aoqi@0:             if (sb.charAt(seek) == ' ') {
aoqi@0:                 while (seek > 0 && sb.charAt(seek - 1) == ' ')
aoqi@0:                     seek--;
aoqi@0:                 return seek;
aoqi@0:             }
aoqi@0:             seek--;
aoqi@0:         }
aoqi@0:         return 0;
aoqi@0:     }
aoqi@0: }