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From:	Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Pb with sprintf
Date:	8 Sep 2005 11:59:17 GMT
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Joe Wright <jwright AT comcast DOT net> wrote:

> What could sprintf() do with malloc()?

Construct itself a temporary buffer to work in --- the output buffer
may not be large enough.  

If sprintf() were a standalone "real" function that does all the work
itself, it probably wouldn't need that.  But in modern C runtimes,
sprintf() may well be a specialization of vsnprintf(), which may a
need a buffer to do its job.  Or sprintf() could be implemented via an
in-memory pseudo file, i.e. it may need to construct a FILE * to pass
to the underlying generic routines.

-- 
Hans-Bernhard Broeker (broeker AT physik DOT rwth-aachen DOT de)
Even if all the snow were burnt, ashes would remain.

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