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Date: Tue, 12 Apr 2011 19:09:00 -0000
From: Thomas Koenig <tkoenig@netcologne.de>
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To: Janne Blomqvist <blomqvist.janne@gmail.com>
CC: Fortran List <fortran@gcc.gnu.org>,  GCC Patches <gcc-patches@gcc.gnu.org>
Subject: Re: [Patch, libfortran] Type cleanup
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Hi Janne,

> the attached patch does a bit of janitorial type cleanup for the
> library. It replaces the use of ssize_t with ptrdiff_t or index_type
> where appropriate; this is entirely for documentation purposes, as on
> all targets we support ssize_t == ptrdiff_t.
>
> ssize_t is a POSIX type used in the IO functions, and refers to the
> size of an object or -1 for an error (hence there is SSIZE_MAX but not
> SSIZE_MIN).
>
> ptrdiff_t is a C89 type which is the result of subtracting two
> pointers; hence it's also the "natural" type for array indexes.
>
> Regtested on x86_64-unknown-linux-gnu, Ok for trunk?

OK.  Thanks for the patch!

	Thomas