The following code prints invalid value in assertEquals() on solaris-sparc with -Xcomp option:

public class T {
    static void assertEquals(Object exp, Object act) {
        System.out.println(exp + " vs " + act);
    }

    static MethodHandle asList;

    static void test() {
        MethodHandle makeEmptyList = MethodHandles.constant(List.class, Arrays.asList());
        MethodHandle asList = lookup().findStatic(Arrays.class, "asList", methodType(List.class, Object[].class));
        T.asList = asList;

        MethodHandle collectingTypeHandler = lookup()
                .findStatic(lookup().lookupClass(), "collectingTypeHandler",
                            methodType(MethodHandle.class, MethodHandle.class, MethodType.class));

        MethodHandle makeAnyList = makeEmptyList.withTypeHandler(collectingTypeHandler);

        assertEquals("TEST>[two, too]<TEST", makeAnyList.invokeGeneric("two", "too").toString());
    }

    static MethodHandle collectingTypeHandler(MethodHandle base, MethodType newType) {
        return asList.asCollector(Object[].class, newType.parameterCount()).asType(newType);
    }
}

With -Xcomp, it prints:

(String,String)Object vs [two, too]

With -Xint it prints:

TEST>[two, too]<TEST vs [two, too]