Oh, looks like man pages should be fixed too. There is no mention in POSIX 2008 that sys/types.h and sys/ipc.h should be included:
http://pubs.opengroup.org/onlinepubs/9699919799/functions/shmctl.html http://pubs.opengroup.org/onlinepubs/9699919799/functions/shmget.html http://pubs.opengroup.org/onlinepubs/9699919799/functions/shmat.html So this means that current behavior is not exactly what POSIX 2008 says.
