[PATCH] Remove use of _global_impure_ptr

[Sebastian Huber]

On 04/05/2022 15:34, Corinna Vinschen wrote:
> 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.

Yes, _GLOBAL_REENT is only used by Newlib modules and not in public 
macros/inline functions.  If applications don't use this internal item, 
then we don't need the impure-compat.c.

I will check in the patch without the impure-compat.c. If needed we can 
add it later.

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