On Thu, Dec 20, 2012 at 1:12 PM, Nicholas Clark <nick@ccl4.org> wrote: > SvLEN == 0 has a historical established meaning of "the core doesn't own > this buffer". If COW were disabled for all PVs with SvLEN == 0, does this > solve the issues in more than just this module? I assume it does, but I'm not certain on the implications for $& and friends on such strings (I had the impression they rely on COW now, but I haven't looked into it). Leon