Re: USE_LSB_TAG not supported on this platform

[Eli Zaretskii]

> Cc: address@hidden, address@hidden, address@hidden
> From: Paul Eggert <address@hidden>
> Date: Tue, 9 Feb 2016 00:39:13 -0800
> 
> Eli Zaretskii wrote:
> > Could you please add a commentary explaining the need for this
> > additional layer of lmalloc/lrealloc?
> 
> Sure. I gave it a shot in emacs-25 commit 
> b1079c0f86c218f016a6c2e84ea402f4e175fc53 as part of a patch to improve 
> portability to hosts where realloc and malloc can return pointers that are 
> not 
> multiples of 8. (I don't have access to any such hosts, which I think are 
> rare 
> nowadays though some may still exist.)

Thanks.  Out of curiosity: which hosts can behave like that?

Also, why are we sure that the loops will end at some point on those
hosts?  Shouldn't we perhaps set a limit to the loop iterations, to be
sure we don't infloop there?