Subject: bug#15405: 24.3; #[] freezes emacs

From: Dmitry Antipov <[email-masked]>
Date: Sat, 21 Sep 2013 05:28:58 +0400

On 09/21/2013 01:38 AM, Barry OReilly wrote:

> If performance didn't motivate making a global zero_vector, what did?

1) Small memory saving, like with empty strings.
2) Simple implementation - (eq [] []) is trivial.

BTW, I have no ideas who and why produces empty bytecode strings.
Shouldn't it be disallowed/optimized away? IIUC this is the
only PVEC_xxx type which can be zero-sized.

Dmitry