* varobj.c (varobj_set_value): Make sure that there were no

    * varobj.c (varobj_set_value): Make sure that there were no
        errors evaluating the object before attempting to set its
        value.
        value_cast now properly adjusts VALUE_ADDRESS for baseclasses,
        so this offset adjustment is no longer necessary.
        (create_child): Don't set the error flag if the child is
        a CPLUS_FAKE_CHILD.
        (value_of_child): If value_fetch_lazy fails, return NULL
        so that callers will be notified that an error occurred.
        (c_value_of_variable): Delay check of variable's validity
        until later. We actually want all structs and unions to have
        the value "{...}".
        Do not return "???" for variables which could not be evaluated.
        This error condition must be returned to the caller so that it
        can get the error condition from gdb.
        (cplus_name_of_child): Adjust index for vptr before figuring
        out the name of the child.
        (cplus_value_of_child): If a child's (real) parent is not valid,
        don't even bother trying to give a value for it. Just return
        an error. Change all instances in this function.
        (cplus_type_of_child): If our parent is one of the "fake"
        parents, we need to get at the type of the real parent, and
        derive the child's true type using this information.