src/regression/sem_close-unmap.c

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