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Re: [Patch, libfortran] Type cleanup

From: Thomas Koenig <tkoenig at netcologne dot de>
To: Janne Blomqvist <blomqvist dot janne at gmail dot com>
Cc: Fortran List <fortran at gcc dot gnu dot org>, GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Tue, 12 Apr 2011 21:09:18 +0200
Subject: Re: [Patch, libfortran] Type cleanup
References: <BANLkTimDp9oi_hzK4GT0D8znNAGLZnsUNg@mail.gmail.com>

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

References:
- [Patch, libfortran] Type cleanup
  - From: Janne Blomqvist

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