NULL for return by reference values: error or ignore?

[Joel Sherrill]

On Tue, Mar 23, 2021, 12:36 PM Sebastian Huber <
sebastian.huber at embedded-brains.de> wrote:

> Hello,
>
> we have a couple of directives which set something and return the
> previous value, for example rtems_task_mode() and
> rtems_task_set_priority(). The value is returned through a pointer
> parameter. If this pointer is NULL, then the directives do nothing and
> just returns an error status. Why don't we simply not return a value in
> this case, so that you can set the task priority via
> rtems_task_set_priority(id, priority, NULL)?
>

I'm okay with this. It seems more in keeping with the POSIX behavior.

--joel

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