Subject: Re: bug#19061: [PATCH] dfa: building superset, access to unallocated memory

From: Paul Eggert <[email-masked]>
Date: Sat, 15 Nov 2014 12:59:13 -0800

Jim Meyering wrote:
> Perhaps you found a system whose memcpy
> dereferences the source pointer even when the size is 0?

That seems pretty unlikely, on a flat-address-space machine.  And grep already 
assumes a flat address space, since gnulib does.