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List:       autoconf
Subject:    Re: ac_sys_largefile / fseeko problem
From:       Paul Eggert <eggert () CS ! UCLA ! EDU>
Date:       2003-03-17 20:13:18
Message-ID: vi84r613g69.fsf () cs ! ucla ! edu
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Guido Draheim <guidod-2003-@gmx.de> writes:

> The glibc cvs stdio.h should be fixed, - atleast do export fseeko
> when #def __USE_FILE_OFFSET64 is set!

POSIX 1003.1-2001 says that fseeko should be exported by any
implementation that claims conformance to XSI.  glibc doesn't claim
that yet, but it will in due course, and I think that's your best
argument for having glibc export fseeko by default.

In other words, just as stdio.h exports fileno by default (even though
the C Standard prohibits this), it should also export fseeko by
default.  In both cases, exporting by default will cause fewer
problems in practice.

> Note that C compilers wouldn't even warn about the
> missing fseeko declaration

C99 requires a diagnostic for this, so this problem will go away
eventually.



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