Re: xnrealloc: How and when to properly use it.

[Paul Eggert]

Keith David Bershatsky wrote:
> On a W32 build of Emacs (built with MinGW_32 and ezwinports downloaded a few 
> years ago), my usage of xnrealloc (more often than not) causes Emacs to crash 
> when_not_  running under gdb.

Try the GDB command 'set disable-randomization off'. Of course this makes 
debugging more ... interesting.

+              /* Decrease the size of the array to a bare minimum. */
+              xnrealloc (w->mc_elts.caches, 1, sizeof *w->mc_elts.caches);

That can't be right; at the very least you need to assign the returned value of 
xnrealloc back to w->mc_elts.caches.