* bug#31635: mapcon hangs emacs 24.5.1 of debian
@ 2018-05-28 23:33 Dave Goel
2018-05-28 23:45 ` Dave Goel
2018-05-29 7:55 ` Andreas Schwab
0 siblings, 2 replies; 5+ messages in thread
From: Dave Goel @ 2018-05-28 23:33 UTC (permalink / raw)
To: 31635, deego3
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(require 'cl)
(mapcon 'identity (list nil nil nil)) => hangs
(emacs-version)
"GNU Emacs 24.5.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.11)
of 2017-09-12 on hullmann, modified by Debian"
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^ permalink raw reply [flat|nested] 5+ messages in thread
* bug#31635: mapcon hangs emacs 24.5.1 of debian
2018-05-28 23:33 bug#31635: mapcon hangs emacs 24.5.1 of debian Dave Goel
@ 2018-05-28 23:45 ` Dave Goel
2018-05-29 11:18 ` Noam Postavsky
2018-05-29 7:55 ` Andreas Schwab
1 sibling, 1 reply; 5+ messages in thread
From: Dave Goel @ 2018-05-28 23:45 UTC (permalink / raw)
To: 31635, deego3
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Per kenzo of #emacs, bug also exists in build 27 on a mac
On Mon, May 28, 2018 at 7:33 PM, Dave Goel <deego3@gmail.com> wrote:
> (require 'cl)
>
> (mapcon 'identity (list nil nil nil)) => hangs
>
>
> (emacs-version)
>
> "GNU Emacs 24.5.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.11)
> of 2017-09-12 on hullmann, modified by Debian"
>
>
>
>
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^ permalink raw reply [flat|nested] 5+ messages in thread
* bug#31635: mapcon hangs emacs 24.5.1 of debian
2018-05-28 23:33 bug#31635: mapcon hangs emacs 24.5.1 of debian Dave Goel
2018-05-28 23:45 ` Dave Goel
@ 2018-05-29 7:55 ` Andreas Schwab
1 sibling, 0 replies; 5+ messages in thread
From: Andreas Schwab @ 2018-05-29 7:55 UTC (permalink / raw)
To: Dave Goel; +Cc: 31635
On Mai 28 2018, Dave Goel <deego3@gmail.com> wrote:
> (require 'cl)
>
> (mapcon 'identity (list nil nil nil)) => hangs
With 26.1, this now produces an error:
ELISP> (mapcon 'identity (list nil nil nil))
*** Eval error *** List contains a loop: (nil nil nil . #1)
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
"And now for something completely different."
^ permalink raw reply [flat|nested] 5+ messages in thread
* bug#31635: mapcon hangs emacs 24.5.1 of debian
2018-05-28 23:45 ` Dave Goel
@ 2018-05-29 11:18 ` Noam Postavsky
2018-06-04 10:37 ` Noam Postavsky
0 siblings, 1 reply; 5+ messages in thread
From: Noam Postavsky @ 2018-05-29 11:18 UTC (permalink / raw)
To: Dave Goel; +Cc: 31635
Dave Goel <deego3@gmail.com> writes:
> Per kenzo of #emacs, bug also exists in build 27 on a mac
On my build of master I don't get a hang, I get this error:
Debugger entered--Lisp error: (circular-list (nil nil . #2))
nconc((nil nil nil . #2) (nil nil . #2) (nil nil . #3))
apply(nconc ((nil nil nil . #4) (nil nil . #4) (nil nil . #5)))
mapcon(identity (nil nil nil . #3))
On 26.1 the debugger hangs when trying to print this though (that is
Bug#31146).
^ permalink raw reply [flat|nested] 5+ messages in thread
* bug#31635: mapcon hangs emacs 24.5.1 of debian
2018-05-29 11:18 ` Noam Postavsky
@ 2018-06-04 10:37 ` Noam Postavsky
0 siblings, 0 replies; 5+ messages in thread
From: Noam Postavsky @ 2018-06-04 10:37 UTC (permalink / raw)
To: Dave Goel; +Cc: 31635
tags 31635 fixed
close 31635 26.1
quit
Noam Postavsky <npostavs@gmail.com> writes:
> Dave Goel <deego3@gmail.com> writes:
>
>> Per kenzo of #emacs, bug also exists in build 27 on a mac
>
> On my build of master I don't get a hang, I get this error:
>
> Debugger entered--Lisp error: (circular-list (nil nil . #2))
> nconc((nil nil nil . #2) (nil nil . #2) (nil nil . #3))
> apply(nconc ((nil nil nil . #4) (nil nil . #4) (nil nil . #5)))
> mapcon(identity (nil nil nil . #3))
>
> On 26.1 the debugger hangs when trying to print this though (that is
> Bug#31146).
I'm therefore closing this report.
^ permalink raw reply [flat|nested] 5+ messages in thread
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2018-05-28 23:33 bug#31635: mapcon hangs emacs 24.5.1 of debian Dave Goel
2018-05-28 23:45 ` Dave Goel
2018-05-29 11:18 ` Noam Postavsky
2018-06-04 10:37 ` Noam Postavsky
2018-05-29 7:55 ` Andreas Schwab
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