posix_openpt vs getpt??

[Samuel Thibault]

Hello,

In sysdeps/unix/bsd/getpt.c we can read:

/* We cannot define posix_openpt in general for BSD systems.  */

I do not see why posix_openpt can't be defined like getpt is. Is there
a semantic difference between them beyond the open flags that could be
just passed to the open() call?  Notably, Linux' getpt() is actually
implemented as __posix_openpt (O_RDWR)...

Samuel