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Re: Libiberty's snprintf for v3?
- From: Andreas Schwab <schwab at suse dot de>
- To: "Kaveh R. Ghazi" <ghazi at caip dot rutgers dot edu>
- Cc: pcarlini at unitus dot it, dj at redhat dot com, gcc at gcc dot gnu dot org,libstdc++ at gcc dot gnu dot org
- Date: Tue, 22 Apr 2003 11:00:01 +0200
- Subject: Re: Libiberty's snprintf for v3?
- References: <3EA44576.90708@unitus.it> <200304220041.UAA22116@caip.rutgers.edu>
"Kaveh R. Ghazi" <ghazi at caip dot rutgers dot 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.
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Andreas Schwab, SuSE Labs, schwab at suse dot de
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