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Re: `quad' printf format specifier ?
- To: Marc Espie <Marc dot Espie at liafa dot jussieu dot fr>
- Subject: Re: `quad' printf format specifier ?
- From: Zack Weinberg <zack at rabi dot columbia dot edu>
- Date: Fri, 05 Feb 1999 20:55:28 -0500
- cc: egcs-bugs at egcs dot cygnus dot com, millert at cvs dot openbsd dot org
On Sat, 6 Feb 1999 01:10:39 +0100, Marc Espie wrote:
>What is the exact status of the quad format specifier in printf ("qd"
>As far as I know, it is intended to handle 64 bits comfortably on all
>machines, and was originally a bsd-ism (quad_t).
>However, egcs (and gcc before that) treats it as equivalent to ll, which
>is not always equivalent: openbsd-alpha is configured so that long is
>64 bits, and hence quad_t is typedef'ed to long.
>In that particular case, the printf-like attribute doesn't work as
If sizeof (long long) == sizeof (long) on openbsd-alpha, it should work
anyway - i.e. %ld, %lld, and %qd should be interchangeable. What problems
are you seeing?
(Note this is a libc issue, not a compiler issue, unless your problem is
with gcc's format checking.)