Re: USE_LSB_TAG not supported on this platform

[Eli Zaretskii]

> From: Paul Eggert <address@hidden>
> Date: Mon, 8 Feb 2016 11:45:00 -0800
> Cc: "C. Baxter" <address@hidden>
> 
> On 02/07/2016 01:35 PM, Herbert J. Skuhra wrote:
> > On FreeBSD 11-CURRENT i386 (r295345)
> >
> > - the emacs-devel port compiles with gcc only (tested with USE_GCC=5)
> > - even emacs-25 does not build with clang
> > - the breakage starts also with d6585a9 (using gcc5)
> 
> Thanks for pointing out these problems. Since this is a regression in 
> emacs-25 we need to fix it there. Please try the latest version of 
> emacs-25, which contains the attached patch. If this works it will be 
> merged into master. It should work with clang as well as with GCC.

Could you please add a commentary explaining the need for this
additional layer of lmalloc/lrealloc?  The existing commentary
explains what the new functions and macros do, but it doesn't explain
why that is needed.

Thanks.