[PATCH 2/2] Add and use _REENT_GLOBAL_ATEXIT

[Sebastian Huber]

On 05/07/2013 11:36 PM, Joel Sherrill wrote:
> First, I am thrilled to see the reent structure shrinking.

Yes, its noticeable.  On PowerPC approximately 400 bytes or 37%.

>
> But binary compatibility has been mentioned.
> Binary compatibility with what?  What targets?

All targets using "newlib/libc/include/sys/reent.h".

>
> Except for Cygwin and Linux, I would think most users are
> compiling from source. And even if not, I wouldn't think it
> was cool to directly access the reent structure anyway. If
> we added, deleted or reordered the fields, things would break.
>
> Just curious what this use case is.

This patch removes two fields from the middle of struct _reent, thus the 
structure layout changes.

-- 
Sebastian Huber, embedded brains GmbH

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