>From $TOPDIR/include/rw/_pair.h: 64 // 20.2.2, p2 65 pair () 66 #ifndef _RWSTD_NO_EMPTY_MEM_INITIALIZER 67 : first (/* lwg issue 265 */), second () { } 68 #else 69 // assumes types satisfy the CopyConstructible requirements 70 : first (first_type ()), second (second_type ()) { } 71 #endif // _RWSTD_NO_EMPTY_MEM_INITIALIZER Are empty member initializers something we still need to concern ourselves with? Is LWG issue 265 still pertinent? Thanks, Brad.