/*
* 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 8007722
* @ summary GetAndSetP ' s MachNode should capture bottom type
*
* @ run main / othervm - XX : - UseOnStackReplacement - XX : - BackgroundCompilation
* compiler . c2 . Test8007722
*/
package compiler.c2;
import java.util.concurrent.atomic.AtomicReference;
public class Test8007722 {
int i;
static AtomicReference<Test8007722> ref;
static int test(Test8007722 new_obj) {
Test8007722 o = ref.getAndSet(new_obj);
int ret = o.i;
o.i = 5 ;
return ret;
}
static public void main(String[] args) {
Test8007722 obj = new Test8007722();
ref = new AtomicReference<Test8007722>(obj);
for (int i = 0 ; i < 20000 ; i++) {
test(obj);
}
System.out.println("PASSED" );
}
}
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