------- Comment #2 from rguenth at gcc dot gnu dot org 2008-06-13 08:35 ------- For
struct cmsghdr { size_t cmsg_len; __extension__ unsigned char __cmsg_data []; }; DECL_SIZE{_UNIT} of __cmsg_data is NULL. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36520