Re: slime + clisp + emacs: server disconnects - slime-devel - mailman3.common-lisp.net

23 Jul 2019

      I have sbcl too (switched to it after the clisp shenanigans started upon upgrading to v2.24):
It does *not* crash, and I'm perfectly happy using sbcl.
I was just impelled by curiosity to try and figure out what's wrong on the clisp side.
On July 23, 2019 6:58:55 PM GMT+03:00, Michael Rice limitcase@gmail.com wrote:
...
Have you considered switching to Steel Bank Common Lisp (SBCL) to see
if it
also crashes?
On Tue, Jul 23, 2019 at 10:51 AM Stuart Little achirvasub@gmail.com
wrote:
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On Tue, Jul 23, 2019 at 05:03:19PM +0300, Stas Boukarev wrote:
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Well, your clisp just happens to crash on that.
I understand that :), but the purpose was to gain some insight into
how or
...
why it's happening.
Perhaps I can hack the swank loading procedure to avoid this, for
instance.But I'd need to understand the situation beyond the simple
observation that there's a crash, hence the mailing list message.
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On Tue, Jul 23, 2019 at 4:59 PM Stuart Little
achirvasub@gmail.com
...
wrote:
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On Tue, Jul 23, 2019 at 04:52:00PM +0300, Stas Boukarev wrote:
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It says that Clisp crashes with a segfault, nothing to do with
slime.
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It does say that, but a follow-up:
If I run through the procedure described at the end, of starting
swank
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from within clisp, there are no crashes with swank-v2.20 (rather than
2.24).
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...
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I do get a warning in emacs to the effect that swank (2.20) and
slime
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(2.24) versions don't match, but once I confirm that the crashes go
away.
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...
So this same clisp installation works fine with swank 2.20 and
not
...
swank 2.24, meaning that some change in the latter is what's causing
this.
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On Tue, Jul 23, 2019 at 4:30 PM Stuart Little
achirvasub@gmail.com
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wrote:
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I am running

emacs 26.2
slime 2.24
clisp 2.49

on Linux.
Running M-x slime in emacs with 'inferior-lisp-program' set
to
...
'clisp' starts slime fine. I can usually run one evaluation (like say
(+ 2
...
3)), whereupon any other action (pressing 'enter', say) will result
in a
...
disconnect:
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Lisp connection closed unexpectedly: connection broken by
remote
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peer
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The inferior-lisp buffer reads as follows after the
disconnect:
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--- buffer starts ---
(progn (load
"/home/chirvasitua/quicklisp/dists/quicklisp/software/slime-v2.24/swank-loader.lisp"
...
:verbose t) (funcall (read-from-string "swank-loader:init")
:from-emacs t)
...
(funcall (read-from-string "swank:start-server") "/tmp/slime.19223"))
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i i i i i i i       ooooo    o        ooooooo   ooooo
ooooo
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I I I I I I I      8     8   8           8     8     o  8
8
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I  \ `+' /  I      8         8           8     8        8
8
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\  `-+-'  /       8         8           8      ooooo
8oooo
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`-__|__-'        8         8           8           8  8
    |            8     o   8           8     o     8  8

------+------       ooooo    8oooooo  ooo8ooo   ooooo   8
Welcome to GNU CLISP 2.49 (2010-07-07)
http://clisp.cons.org/
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Copyright (c) Bruno Haible, Michael Stoll 1992, 1993
Copyright (c) Bruno Haible, Marcus Daniels 1994-1997
Copyright (c) Bruno Haible, Pierpaolo Bernardi, Sam Steingold
1998
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...
Copyright (c) Bruno Haible, Sam Steingold 1999-2000
Copyright (c) Sam Steingold, Bruno Haible 2001-2010
Type :h and hit Enter for context help.
[1]>
;; Loading file
/home/chirvasitua/quicklisp/dists/quicklisp/software/slime-v2.24/swank-loader.lisp
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;; Loaded file
/home/chirvasitua/quicklisp/dists/quicklisp/software/slime-v2.24/swank-loader.lisp
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/packages.fas
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;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/packages.fas
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/backend.fas
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;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/backend.fas
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/xref.fas ...
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;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/xref.fas
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/metering.fas
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;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/metering.fas
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/clisp.fas
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WARNING: DEFUN/DEFMACRO: redefining function BREAK in
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/clisp.fas,
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     was defined in

/builddir/clisp-2.49/src/condition.fas
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WARNING: Replacing method #<STANDARD-METHOD (#<BUILT-IN-CLASS
T>)>
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in
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     #<STANDARD-GENERIC-FUNCTION EMACS-INSPECT>

;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/clisp.fas
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/gray.fas ...
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WARNING: The generic function #<STANDARD-GENERIC-FUNCTION
STREAM-LINE-COLUMN>
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     is being modified, but has already been called.

WARNING: The generic function #<STANDARD-GENERIC-FUNCTION
STREAM-FORCE-OUTPUT>
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     is being modified, but has already been called.

WARNING: The generic function #<STANDARD-GENERIC-FUNCTION
STREAM-LINE-COLUMN>
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     is being modified, but has already been called.

;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/gray.fas
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/match.fas
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;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/match.fas
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/rpc.fas ...
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;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/rpc.fas
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/swank.fas
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;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/swank.fas
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0 errors, 5 warnings
;; Swank started at port: 41975.
CL-USER>
;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-trace-dialog.fas
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;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-trace-dialog.fas
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-package-fu.fas
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;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-package-fu.fas
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-presentations.fas
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;;  Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-repl.fas
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WARNING: The generic function
         #<STANDARD-GENERIC-FUNCTION THREAD-FOR-EVALUATION>
is
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being modified,
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     but has already been called.

WARNING: Replacing method
          #<STANDARD-METHOD
            (#<STRUCTURE-CLASS MULTITHREADED-CONNECTION> (EQL
:FIND-EXISTING))>
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     in #<STANDARD-GENERIC-FUNCTION

THREAD-FOR-EVALUATION>
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;;  Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-repl.fas
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;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-presentations.fas
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-macrostep.fas
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;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-macrostep.fas
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-fuzzy.fas
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;;  Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-util.fas
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;;  Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-util.fas
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;;  Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-c-p-c.fas
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;;  Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-c-p-c.fas
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;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-fuzzy.fas
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-fancy-inspector.fas
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;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-fancy-inspector.fas
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;; Loading file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-arglists.fas
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WARNING: Test failed: (&KEY #'#'+) => "(&key (function
#'+))"
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     Expected: One of: "(&key (function #'+))", "(&key

(function (function
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     +)))"

;; Loaded file
/home/chirvasitua/.slime/fasl/2.24/clisp-2.49-unix-pc386/contrib/swank-arglists.fas
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Process inferior-lisp segmentation fault
--- buffer ends ---
More information:

starting clisp in a terminal all on its own seems to work

fine;
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I haven't had segmentation faults using it in isolation from slime.
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...

I tried to start the server from within clisp and connect

to it:
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(a) rlwrap clisp
(b) (load
"~/quicklisp/dists/quicklisp/software/slime-v2.24/swank-loader.lisp")
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(c) (swank-loader::init :reload t)
(d) (swank:create-server :port 7000)
(e) from within emacs: M-x slime-connect with localhost and
port
...
7000
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Same behavior as before: I get connected, get to make a few
evaluations, get disconnected.
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This time around rlwrap tells me (in the terminal where I
started
...
clisp):
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rlwrap: warning: clisp crashed, killed by SIGSEGV
-- 
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