[ccan] Can _GNU_SOURCE be conditional in TAP?

[Tim Post]

Hi Me,

On Tue, 2009-03-31 at 15:41 +0800, Tim Post wrote:

> What extensions to the glibc printf sub system are enabled with
> _GNU_SOURCE? I think people would expect them in a replacement
> implementation of asprintf() (turned on by _GNU_SOURCE), which might
> entail a whole ccan printf module to replace it.

Such extensions would also be assumed by printf(). I'm using a rather
old libc, because upgrading at this point is going to be a major pain in
the ass.

I don't know for sure that there are any, but thought I'd toss that out.

Cheers,
--Tim