BadLogicCode.java

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/*
 * @test
 * @bug 4157675
 * @summary Solaris JIT generates bad code for logic expression
 * @author Tom Rodriguez
 * @run main compiler.codegen.BadLogicCode
 */

package compiler.codegen;

public class BadLogicCode {
    static int values[] = {Integer.MIN_VALUE, -1, 0, 1, 4, 16, 31,
                           32, 33, Integer.MAX_VALUE};
    static char b[][] = {null, new char[32]};
    static boolean nullPtr = false, indexOutBnd = false;
    static boolean indexOutBnd2 = false;

    public static void main(String args[]) throws Exception{
        int i = 1, j = 4, k = 9;

        nullPtr = (b[i] == null);

        int bufLen = nullPtr ? 0 : b[i].length;
        indexOutBnd = (values[j] < 0)
            || (values[j] > bufLen)
            || (values[k] < 0)
            || ((values[j] + values[k]) > bufLen)
            ||((values[j] + values[k]) < 0);

        indexOutBnd2 = (values[j] < 0);
        indexOutBnd2 = indexOutBnd2 || (values[j] > bufLen);
        indexOutBnd2 = indexOutBnd2 || (values[k] < 0);
        indexOutBnd2 = indexOutBnd2 || ((values[j] + values[k]) > bufLen);
        indexOutBnd2 = indexOutBnd2 ||((values[j] + values[k]) < 0);
        if (indexOutBnd != indexOutBnd2)
            throw new Error("logic expression generate different results");
    }
}