Re: should asprintf and friends guarantee sane pointer on failure?

[Dmitry V. Levin]

On Mon, Jul 29, 2024 at 09:58:57AM -0500, Eric Blake wrote:
> On Mon, Jul 29, 2024 at 04:35:57PM GMT, Bruno Haible wrote:
> > Hi Eric,
> > 
> > I see two — mostly unrelated — topics in your mail and the referenced
> > threads.
> > 
> > 1) The coding paradigm.
> 
> > 
> >    The only reasonable change that should be done is to mark the
> >    declaration of asprintf and vasprintf with attribute
> >    __warn_unused_result__. This way, the compiler will warn about
> >    the crappy code.
> 
> Makes sense; I would be in favor of that change in gnulib (and maybe
> can convince Florian to consider that in glibc)

In glibc the attribute is there since 2006, see
https://sourceware.org/cgit/glibc/commit/?id=11bf311edc7

Old git commits in glibc repository is a mess, but they are still somewhat
usable.


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ldv