Subject: bug#27016: possible bug in `defsetf'

From: Michael Heerdegen <[email-masked]>
Date: Tue, 23 May 2017 02:45:27 +0200

[email-masked] writes:

> I think fixing that would not fix this bug, because the (setf (foobar
> pair) 0) would still be compiled according to
> byte-compile-symbolprop-environment.  It would just mean that compiling
> the file containing (defsetf foobar setcar) would not affect other files
> in the compiler's session.

Yes, there is probably no reasonable backward-compatible fix at all.

Michael.