GNU bug report logs - #21963
Spurious byte compile message: "Warning: the function `bar' might not be defined at runtime."

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Package: emacs;

Reported by: Alan Mackenzie <acm <at> muc.de>

Date: Fri, 20 Nov 2015 10:50:03 UTC

Severity: minor

Fixed in version 25.1

Done: Stefan Kangas <stefan <at> marxist.se>

Bug is archived. No further changes may be made.

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Alan Mackenzie <acm <at> muc.de>
Cc: 21963 <at> debbugs.gnu.org
Subject: bug#21963: Spurious byte compile message: "Warning: the function	`bar' might not be defined at runtime."
Date: Fri, 20 Nov 2015 16:48:13 +0200

> Date: Fri, 20 Nov 2015 11:40:50 +0000
> Cc: 21963 <at> debbugs.gnu.org
> From: Alan Mackenzie <acm <at> muc.de>
> 
> > eval-when-compile has no effect at run time, and the warning is
> > explicitly about what might happen at runtime.
> 
> > IOW, I don't think this is a bug.
> 
> It is, at the very least, puzzling behaviour.  The warning is issued for
> a function that most definitely has been defined at runtime.

No, it was not (or, more accurately, will not be).  'eval-when-compile'
does nothing to make sure it will be defined at runtime; you need
either 'require' or 'eval-and-compile'.
This bug report was last modified 5 years and 286 days ago.

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