GNU bug report logs - #6835
23.2; eval'ing `type-of' with #[abc] as arg gets a Fatal error (11) Segmentation fault

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Package: emacs;

Reported by: MON KEY <monkey <at> sandpframing.com>

Date: Tue, 10 Aug 2010 01:05:02 UTC

Severity: normal

Found in version 23.2

Done: Andreas Schwab <schwab <at> linux-m68k.org>

Bug is archived. No further changes may be made.

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Kevin Rodgers <kevin.d.rodgers <at> gmail.com>
Cc: bug-gnu-emacs <at> gnu.org
Subject: bug#6835: 23.2; eval'ing `type-of' with #[abc] as arg gets a Fatal error (11) Segmentation fault
Date: Tue, 10 Aug 2010 10:27:19 +0200

> (functionp #[abc])
> ⇒ t

> (funcall #[abc])
> ⇒ Debugger entered--Lisp error: (invalid-function #[abc])

> Shouldn't anything that satisfies functionp be a valid argument to funcall?

Yes and no.  Should (lambda 3) be accepted by functionp?  What about
(lambda () . 3) ?  What about (lambda () (+ . 1)) and other errors?

#[abc] is an object of "function type", which is why functionp
returns t.  I don't think that it's terribly important if when calling
it, you get an error, since that can happen for syntactically valid
functions as well.


        Stefan
This bug report was last modified 14 years and 287 days ago.

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