Re: Removal of unexec support from glibc malloc

[Paul Eggert]

Wolfgang Jenkner wrote:
> Isn't hybrid malloc the portable version of this?  A patch series for
> this already exists (bug##22086), but Paul said that he wanted to get
> rid of src/gmalloc.c even for allocations before dumping, IIUC.

Yes, that's what I'd like to do in the long run. Emacs shouldn't be in the 
malloc business.

If the hybrid malloc approach suffices to get Emacs to work with the new glibc 
API (and assuming Emacs doesn't already work with the new glibc API), then we 
could install that patch series into emacs-25 rather than trying to improve it 
for after Emacs 25, on the theory that people will want to build Emacs 25 in 
GNU/Linux environments with the new glibc and that this boosts the urgency of 
the hybrid malloc.

Florian, I understand that the new glibc implementation doesn't exist yet, so we 
can't test Emacs on it. However, is the new glibc API documented anywhere? 
Perhaps we could try to check via code inspection that Emacs works under 
GNU/Linux both with the current and the new glibc API, either now or with the 
hybrid malloc patches installed.