pollution: iov_base
void* iov_base; 

pollution: iov_len
size_t iov_len; 

pollution: PF_UNIX
#define PF_UNIX AF_UNIX

pollution: AF_LOCAL
#define AF_LOCAL AF_UNIX

pollution: PF_UNSPEC
#define PF_UNSPEC AF_UNSPEC

pollution: PF_INET6
#define PF_INET6 AF_INET6

pollution: SOCK_TYPE_MASK
#define SOCK_TYPE_MASK ((1<<20)-1)

pollution: CMSG_ALIGN
#define CMSG_ALIGN(value) (-(-(size_t)(value) & ~(__alignof__(struct cmsghdr) - 1)))

pollution: PF_INET
#define PF_INET AF_INET

pollution: MSG_DONTWAIT
#define MSG_DONTWAIT (1<<8)

pollution: PF_LOCAL
#define PF_LOCAL PF_UNIX