Re: [PATCH] Remove use of _global_impure_ptr

[Dave Nadler <drn@nadler.com>]

On 5/4/2022 9:34 AM, Corinna Vinschen wrote:
> Hi Sebastian,
>
> On May  3 15:40, Sebastian Huber wrote:
>> Remove the pointer indrection through the read-only _global_impure_ptr and
>> directly use a globally visible _impure_data object of type struct reent.  This
>> enables the static initialization of global data structures in a follow up
>> patch.  In addition, we get rid of a machine-specific file.
> the patch looks good.  I just wonder if we really need the
> impure-compat.c file.  Backward-compat is no problem for embedded stuff,
> and Cygwin doesn't expose _global_impure_ptr to user space either.
>
> If there's no other compelling reason, you can just drop it and push
> the rest.
>
> Thanks,
> Corinna

Apologies if this is a dumb question, but this patch does not
affect the use of the global _impure_ptr, right? For example
FreeRTOS allocates a reentrancy structure for each task and switches
_impure_ptr on context switches.

Thanks!
Best Regards, Dave

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