_CS_POSIX_V6_LP64_OFF64_LINTFLAGS

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
extern (C)
enum _CS_POSIX_V6_LP64_OFF64_LINTFLAGS = _Anonymous_40._CS_POSIX_V6_LP64_OFF64_LINTFLAGS;

Meta