src/regression/sem_close-unmap.c

   1 // commit: f70375df85d26235a45e74559afd69be59e5ff99 2020-10-28
   2 #define _GNU_SOURCE 1
   3 #include <fcntl.h>
   4 #include <stdlib.h>
   5 #include <semaphore.h>
   6
   7 int main()
   8 {
   9         char buf[] = "mysemXXXXXX";
  10         if (!mktemp(buf)) return 1;
  11         // open twice
  12         sem_t *sem = sem_open(buf, O_CREAT|O_EXCL, 0600, 0);
  13         sem_open(buf, 0);
  14         sem_unlink(buf);
  15         // close once
  16         sem_close(sem);
  17         // semaphore should be still mapped
  18         sem_post(sem);
  19 }