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Re: [PATCH 1/5] obstack tidy

From: Alan Modra
Subject: Re: [PATCH 1/5] obstack tidy
Date: Tue, 29 Jul 2014 09:01:50 +0930
User-agent: Mutt/1.5.21 (2010-09-15)

On Mon, Jul 28, 2014 at 12:31:00PM -0700, Roland McGrath wrote:
> > a) Delete nonsense about "not polluting the namespace with stddef.h
> > symbols" since string.h includes stddef.h a little later anyway.
> If you are talking specifically about the glibc implementation's string.h,
> then you are confused.

No, I was talking about gnulib's string.h.

>  glibc's string.h complies with the C and POSIX
> standards, and so does not pollute the namespace with all of stddef.h's
> names.  It only defines size_t and NULL via stddef.h.  If you also want
> ptrdiff_t for use in obstack.h, with GCC's stddef.h you can do:
>       #define __need_ptrdiff_t
>       #include <stddef.h>
> That said, I don't think anybody actually cares about a GNU extension
> header like obstack.h implicitly defining common standard C symbols like
> that ones that stddef.h defines.


Alan Modra
Australia Development Lab, IBM

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