Fwd: CLISP EMACS SWANK remote connection crash

Just to add: I have installed SBCL and started that lisp in place of CLISP,
but the setup and same steps taken below apply. I didn't change anything
re:SBCL - just started it as installed (and loaded swank etc using
quicklisp just as I did with CLISP).

Everything working fine and i am given restart options etc on submitting a
syntax error.

To me that is indicating it is something to do with the CLISP relationship
with SLIME/SWANK - but I will defer to more keener minds.

I forgot to mention that I am using GNU CLISP 2.49.93+

thank you
Habs

---------- Forwarded message ---------
From: C Habs <[email protected]>
Date: Sat, 10 Aug 2019 at 10:06
Subject: CLISP EMACS SWANK remote connection crash
To: <[email protected]>


Hello list@

I will start by saying 'sorry' in advance, if there is already previous
information about this issue that I have missed.

Essentially, with CLISP running on a remote server and when connecting to
it remotely from Emacs on a client, with any sort of syntax error typed at
the REPL, the session is disconnected and CLISP at the remote end
terminated.  There seems to be no handling of these type of errors and I am
wondering if it is a setting I am missing, or simply 'one of those
incompatibility' things yet to be resolved as such ?

I welcome any suggestions to try trace where the problem might be in the
setup (which I believe is fine according to all the material I have read to
create such a remote setup arrangement) and 'fix' it, if this type of setup
works fine for others without issue that is ?

Regards and thank you
Habs


Brief account of setup:

Both client and server machines are linux, both with all the same package
versions of CLISP emacs slime/swank, ssh etc. The only difference is server
is 32Bit linux and client is 64bit.

I have CLISP running on a remote 'server' machine; started with,
/usr/bin/clisp -m 10M. I have tried with the '-I' flag too.

Once the [remote] CLISP is running, at its REPL prompt I have issued,
(asdf:load-system :swank), which loads fine as it seems; followed by,
(swank:create-server), which starts up on default port 4005.

On the client machine, creating the ssh tunnel from client to server as,
ssh -L 4005:127.0.0.1:4005 user@server. offers no problem and sets up fine.

Then starting Emacs, which incidentally has set, in .emacs, (setq
inferior-lisp-program "/usr/bin/clisp -m 10MB -I") ... all appears well
with that too.

Once Emacs is running, issuing the 'slime-connect' command and entering the
requisite host (127.0.0.1) and port (4005) values connects to the remote
CLISP session and REPL prompt appears, as expected.

All firewall ports open etc.

Typing an incorrect syntax expression causes a crash and it seems there is
not error handling or recovery operating. If there are no syntax errors in
anything submitted, all appears fine.

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