ioctl.cc revision 7c9150579ed0278492f51cc8434b1d63a44b9bd1 
1// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t
2// RUN: %clangxx_msan -O3 -g %s -o %t && %run %t
3
4#include <assert.h>
5#include <stdlib.h>
6#include <sys/ioctl.h>
7#include <sys/socket.h>
8#include <unistd.h>
9
10int main(int argc, char **argv) {
11  int fd = socket(AF_INET, SOCK_DGRAM, 0);
12
13  unsigned int z;
14  int res = ioctl(fd, FIOGETOWN, &z);
15  assert(res == 0);
16  close(fd);
17  if (z)
18    exit(0);
19  return 0;
20}
21