1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2 // expected-no-diagnostics
3 typedef long unsigned int __darwin_size_t;
4 typedef long __darwin_ssize_t;
5 typedef __darwin_size_t size_t;
6 typedef __darwin_ssize_t ssize_t;
7 
8 struct cmsghdr {};
9 
10 #if 0
11 This code below comes from the following system headers:
12 sys/socket.h:#define CMSG_SPACE(l) (__DARWIN_ALIGN(sizeof(struct
13 cmsghdr)) + __DARWIN_ALIGN(l))
14 
15 i386/_param.h:#define __DARWIN_ALIGN(p) ((__darwin_size_t)((char *)(p)
16 + __DARWIN_ALIGNBYTES) &~ __DARWIN_ALIGNBYTES)
17 #endif
18 
19 ssize_t sendFileDescriptor(int fd, void *data, size_t nbytes, int sendfd) {
20   union {
21     char control[(((__darwin_size_t)((char *)(sizeof(struct cmsghdr)) + (sizeof(__darwin_size_t) - 1)) &~ (sizeof(__darwin_size_t) - 1)) + ((__darwin_size_t)((char *)(sizeof(int)) + (sizeof(__darwin_size_t) - 1)) &~ (sizeof(__darwin_size_t) - 1)))];
22   } control_un;
23   return 0;
24 }
25 
26