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* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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/*
* @ test
* @ bug 8267239
* @ author Yi Yang
* @ summary apply RCE for % operations
* @ requires vm . compiler1 . enabled
* @ library / test / lib
* @ run main / othervm - XX : TieredStopAtLevel = 1 - XX : + TieredCompilation
* - XX : CompileCommand = compileonly , * ArithmeticRemRCE . test *
* compiler . c1 . ArithmeticRemRCE
*/
package compiler.c1;
import jdk.test.lib.Asserts;
public class ArithmeticRemRCE {
static int field = 1000 ;
static void test1() {
// seq should be loop invariant, so we can not put it into static fields
int [] seq = new int [1000 ];
for (int i = 0 ; i < seq.length; i++) {
seq[i] = i;
}
for (int i = 0 ; i < 1024 ; i++) {
int constVal = 10 ;
Asserts.assertTrue(0 <= seq[i % 5 ] && seq[i % 5 ] <= 4 );
Asserts.assertTrue(0 <= seq[i % -5 ] && seq[i % -5 ] <= 4 );
Asserts.assertTrue(0 <= seq[i % constVal] && seq[i % constVal] <= 9 );
Asserts.assertTrue(0 <= seq[i % -constVal] && seq[i % -constVal] <= 9 );
Asserts.assertTrue(seq[i % 1 ] == 0 );
// will not apply RCE
Asserts.assertTrue(0 <= seq[i % field] && seq[i % field] <= 999 );
Asserts.assertTrue(0 <= seq[i % -field] && seq[i % -field] <= 999 );
}
}
public static void main(String... args) throws Exception {
for (int i = 0 ; i < 10 _000 ; i++) {
test1();
}
}
}
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(vorverarbeitet am 2026-10-11)
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