int pthread_detach(pthread_t __th)

{

  char cVar1;

  int iVar2;

  int *piVar3;

  undefined1 *puVar4;

  pthread_t pVar5;

  undefined4 local_b0;

  undefined4 local_ac;

  pthread_t local_a8;

  iVar2 = (__th & 0x3ff) * 0x10;

  puVar4 = __pthread_handles + iVar2;

  __pthread_lock(puVar4,0);

  iVar2 = *(int *)(__pthread_handles + iVar2 + 8);

  if ((iVar2 == 0) || (pVar5 = *(pthread_t *)(iVar2 + 0x10), pVar5 != __th)) {

    __pthread_unlock(puVar4);

    iVar2 = 3;

  }

  else if (*(char *)(iVar2 + 0x2d) == '\0') {

    if (*(int *)(iVar2 + 0x38) == 0) {

      cVar1 = *(char *)(iVar2 + 0x2c)   //possible issue identified - semgrep

      *(undefined1 *)(iVar2 + 0x2d) = 1;

      __pthread_unlock(puVar4);

      if (cVar1 != '\0') {

        if (-1 < __pthread_manager_request) {

          local_b0 = (*(code *)0x49ec)();

          local_ac = 1;

          local_a8 = pVar5;

          do {

            iVar2 = __libc_write(__pthread_manager_request,&local_b0,0x94);

            if (iVar2 != -1) break;

            piVar3 = __errno_location();

          } while (*piVar3 == 4);

        }

      }

    }

    else {

      __pthread_unlock(puVar4);

    }

    iVar2 = 0;

  }

  else {

    __pthread_unlock(puVar4);

    iVar2 = 0x16;

  }

  return iVar2;

}