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Date: Tue, 22 Apr 2003 23:56:00 -0000
From: "Kaveh R. Ghazi" <ghazi@caip.rutgers.edu>
Message-Id: <200304222314.TAA04965@caip.rutgers.edu>
To: schwab@suse.de
Subject: Re: Libiberty's snprintf for v3?
Cc: dj@redhat.com, gcc@gcc.gnu.org, libstdc++@gcc.gnu.org, pcarlini@unitus.it
References: <3EA44576.90708@unitus.it> <200304220041.UAA22116@caip.rutgers.edu> <jewuhm52lq.fsf@sykes.suse.de>
X-SW-Source: 2003-04/txt/msg01104.txt.bz2

 > From: Andreas Schwab <schwab@suse.de>
 > 
 > "Kaveh R. Ghazi" <ghazi@caip.rutgers.edu> writes:
 > 
 > |> C.  I'm not sure if it's legal (portable) to traverse the va_list
 > |>     twice inside vsnprintf.c, once with vfprintf and once is vsprintf.
 > 
 > It is only legal when both traverses are either bracketed by
 > va_start/va_end, or you use va_copy to copy the va_alist object.  va_copy
 > is a C99 feature, if it isn't provided use __va_copy if defined, else a
 > simple assignment.
 > Andreas.

Thanks, I've snarfed the va_copy defaults from gcc/system.h.

--
Kaveh R. Ghazi			ghazi@caip.rutgers.edu