>Myself, I code defensively around this. It's not hard to write
>code that can handle either form of return value. If a value as
>large as your buffer size or larger is returned, reallocate your
>buffer exactly and try again; if -1 is returned, double (or
>whatever) the buffer size and try again; otherwise, everything's
>fine.
Note that standards compliant snprintf can return -1 only for:
EILSEQ
A wide-character code that does not correspond to a
valid character has been detected.
Retrying with double the buffer size does not help in that case.
Casper
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