Paul Eggert <eggert@cs.ucla.edu> schrieb am Fr., 20. Nov. 2015 um 00:50 Uhr:

> On 11/19/2015 03:08 PM, Philipp Stephani wrote:
> > Returning NULL is fine. malloc also returns NULL on OOM, and module.c
> > handles that.
>
> I'm not so much worried about emacs-module.c. I'm worried about what
> modules will do. If we tell programmers 'just call xmalloc' things will
> be easy for them. If not, they'll be more likely to make mistakes.
>
> Is there some way xmalloc (actually, memory_full) can detect that it was
> invoked from a module rather than from ordinary Emacs code? If so, we
> could have memory_full do something different than call xsignal, in that
> case.
>

Modules cannot (legally) call xmalloc. They need to obtain memory using
malloc or any other standard function. In general, modules cannot call any
functions except those declared in emacs-module.h.