glibc 2.24 -- Release blockers

[Paul Eggert]

Aurelien Jarno wrote:
> I got a look at the emacs git, and found your patch
> to backport to emacs-24. However as said on the wiki [1], it is also
> necessary to compile src/gmalloc.c with -ffreestanding. I have done that
> and it indeed works fine.

Is that still really needed with the emacs-25 branch? As Andreas notes, it has a 
different way of avoiding the calloc issue. What happens if you build the 
emacs-25 branch without using -ffreestanding?