TestStableMismatched.java

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/*
 * @test TestStableMismatched
 * @bug 8158228
 * @summary Tests if mismatched char load from stable byte[] returns correct result
 *
 * @run main/othervm -XX:-CompactStrings -XX:TieredStopAtLevel=1 -Xcomp
 *                   -XX:CompileOnly=compiler.stable.TestStableMismatched::test,::charAt
 *                   compiler.stable.TestStableMismatched
 * @run main/othervm -XX:-CompactStrings -XX:-TieredCompilation -Xcomp
 *                   -XX:CompileOnly=compiler.stable.TestStableMismatched::test,::charAt
 *                   compiler.stable.TestStableMismatched
 */

package compiler.stable;

public class TestStableMismatched {
    public static void main(String args[]) {
        test();
    }

    public static void test() {
        String text = "abcdefg";
        // Mismatched char load from @Stable byte[] String.value field
        char returned = text.charAt(6);
        if (returned != 'g') {
            throw new RuntimeException("failed: charAt(6) returned '" + returned + "' instead of 'g'");
        }
    }
}