[Bug-gnulib] Re: snprintf

[Simon Josefsson]

Bruno Haible <address@hidden> writes:

>> >  - Why do you let vasnprintf allocate the entire string if, afterwards,
>> >    you only need size bytes of it? You could already tell vasnprintf
>> >    to produce less memory.
>>
>> How?
>
> Oops, I was wrong. It's the other case that you can optimize: Avoid
> malloc() and free() when the result will have less than size bytes.

I don't understand, could you be more specific?  snprintf still need
to return the full length, so it has to be computed somehow.

Thanks.