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Re: [RFC] Another look at LFS vs filebuf::showmanyc

From: Paolo Carlini <pcarlini at suse dot de>
To: Paolo Carlini <pcarlini at suse dot de>
Cc: libstdc++ <libstdc++ at gcc dot gnu dot org>, Nathan Myers <ncm at cantrip dot org>
Date: Mon, 20 Sep 2004 17:54:24 +0200
Subject: Re: [RFC] Another look at LFS vs filebuf::showmanyc
References: <414EFBF9.70906@suse.de>

Paolo Carlini wrote:

According to the C++ standard, filebuf::showmanyc returns a *streamsize*,
which is a ptrdiff_t, that is **always** 32 bits on 32-bit platforms,
even if LFS-enabled... Therefore, on real large files, a fixed showmanyc
would typically overflow the type of its return value :( :(

What about returning numeric_limits<streamsize>::max() in such cases?

Paolo.

Follow-Ups:
- Re: [RFC] Another look at LFS vs filebuf::showmanyc
  - From: Dirk Jagdmann
- Re: [RFC] Another look at LFS vs filebuf::showmanyc
  - From: Benjamin Kosnik

References:
- [RFC] Another look at LFS vs filebuf::showmanyc
  - From: Paolo Carlini

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