/*
* Copyright ( c ) 2022 , Alibaba Group Holding Limited . 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
* @ key stress randomness
* @ bug 8288204
* @ summary GVN Crash : assert ( ) failed : correct memory chain
*
* @ run main / othervm - Xbatch - XX : + UnlockDiagnosticVMOptions - XX : + StressIGVN - XX : CompileCommand = compileonly , compiler . c2 . TestGVNCrash : : test compiler . c2 . TestGVNCrash
*/
package compiler.c2;
public class TestGVNCrash {
public static int iField = 0 ;
public static double [] dArrFld = new double [256 ];
public static int [] iArrFld = new int [256 ];
public int [][] iArrFld1 = new int [256 ][256 ];
public void test() {
int x = 0 ;
for (int i = 0 ; i < 10 ; i++) {
do {
for (float j = 0 ; j < 0 ; j++) {
iArrFld[x] = 3 ;
iArrFld1[1 ][x] -= iField;
dArrFld = new double [256 ];
for (int k = 0 ; k < dArrFld.length; k++) {
dArrFld[k] = (k % 2 == 0 ) ? k + 1 : k - 1 ;
}
}
} while (++x < 5 );
for (int j = 0 ; j < 100 _000 ; j++) {
String s = "test" ;
s = s + s;
s = s + s;
}
}
}
public static void main(String[] args) {
TestGVNCrash t = new TestGVNCrash();
t.test();
}
}
Messung V0.5 in Prozent C=98 H=70 G=85
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(vorverarbeitet am 2026-10-01)
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