Reading high pc from a DIE.

Example get high-pc from a DIE.

*/
int examplehighpc(Dwarf_Die die,
    Dwarf_Addr *highpc,
    Dwarf_Error *error)
{
    int        res = 0;
    Dwarf_Addr localhighpc = 0;
    Dwarf_Half form = 0;
    enum Dwarf_Form_Class formclass = DW_FORM_CLASS_UNKNOWN;
 
    res = dwarf_highpc_b(die,&localhighpc,
        &form,&formclass, error);
    if (res != DW_DLV_OK) {
        return res;
    }
    if (form != DW_FORM_addr &&
        !dwarf_addr_form_is_indexed(form)) {
        Dwarf_Addr low_pc = 0;
 
        /*  The localhighpc is an offset from
            DW_AT_low_pc. */
        res = dwarf_lowpc(die,&low_pc,error);
        if (res != DW_DLV_OK) {
            return res;
        } else  {
            localhighpc += low_pc;
        }
    }
    *highpc = localhighpc;
    return DW_DLV_OK;
}