1 // RUN: %clang %s -o %t && %run %t
2 
3 #define _GNU_SOURCE
4 #define _XOPEN_SOURCE 600
5 
6 #include <assert.h>
7 #include <fcntl.h>
8 #include <stdlib.h>
9 #include <string.h>
10 #include <unistd.h>
11 
main()12 int main() {
13   int pt = posix_openpt(O_NOCTTY);
14   if (pt == -1)
15     return 0;
16   char *s = ptsname(pt);
17   assert(s);
18   assert(strstr(s, "/dev"));
19 
20   char buff[1000] = {};
21   int r = ptsname_r(pt, buff, sizeof(buff));
22   assert(!r);
23   assert(strstr(buff, "/dev"));
24 
25   close(pt);
26   return 0;
27 }
28