"" {header()->data,[header()->len]su} is_empty() ? (unsigned int)0 : header()->len header()->count header()->flags header()->len (char16_t*)header()->data {(char*)__0,[len()]s8} len() len() (char*)__0 {(char16_t*)__0,[len()]su} len() len() (char16_t*)__0 {__0}