template <typename GC, typename Key, typename T, typename Traits>
static inline void check_before_clear( cds::container::EllenBinTreeSet<GC, Key, T, Traits>& s )
{
template <typename GC, typename Key, typename T, typename Traits>
static inline void check_before_clear( cds::container::EllenBinTreeSet<GC, Key, T, Traits>& s )
{