GNU bug report logs - #24171
25.1; Bytecode returns nil instead of expected closure

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Package: emacs;

Reported by: Michael Heerdegen <michael_heerdegen <at> web.de>

Date: Sat, 6 Aug 2016 23:23:02 UTC

Severity: normal

Found in version 25.1

Done: Stefan Monnier <monnier <at> iro.umontreal.ca>

Bug is archived. No further changes may be made.

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From: Clément Pit--Claudel <clement.pit <at> gmail.com>
To: 24171 <at> debbugs.gnu.org, schwab <at> linux-m68k.org
Subject: bug#24171: 25.1; Bytecode returns nil instead of expected closure
Date: Sun, 7 Aug 2016 05:30:31 -0400

[Message part 1 (text/plain, inline)]
On 2016-08-07 05:01, Andreas Schwab wrote:
> Michael Heerdegen <michael_heerdegen <at> web.de> writes:
> 
>> eval this defun:
>>
>> (defun test ()
>>   (let ((my-cool-fun 'dummy))
>>     (let ((my-cool-fun
>>            (let ((calculate (lambda () 1)))
>>              (lambda () (setq my-cool-fun calculate))))
>>           (return-my-cool-fun (lambda () my-cool-fun)))
>>       (funcall my-cool-fun)
>>       (funcall return-my-cool-fun))))
>>
>> (test) evals to a closure as expected.
> 
> ELISP> (test)
> *** Eval error ***  Symbol’s value as variable is void: calculate

I can reproduce this. Andreas, are you missing ;; -*- lexical-binding: t; -*- ?

Clément.


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