If I type (undefined-function) at the slime repl, I get the (expected) sldb backtrace with possible restarts. If I choose any of them (except "Abort Slime Request") slime closes the connection. I've tried this on a variety of different Emacs, Slime versions, and Clisp versions including:

Emacs: 21.3, 21.4, cvs from 5-17-06 Slime: cvs from 1-20-06 and ~1 hour ago Clisp: 2.35, 2.39 OS: OS X and some version of FreeBSD

Notably this doesn't happen when I use Sbcl instead of Clisp. That is, I can still type at the Repl after exiting the slime debugger with Sbcl.

Thanks! Greg