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bug#7145: elisp-code behaves differently after byte-compilation
From: |
Andreas Schwab |
Subject: |
bug#7145: elisp-code behaves differently after byte-compilation |
Date: |
Sat, 02 Oct 2010 10:54:47 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux) |
"Markus Sauermann" <mhoram@gmx.de> writes:
> The following code however shows a case where this is not the case.
>
> --- BEGIN CODE ---
> (let ((fun (lambda () (let ((bar "foo")
> (baz "foo"))
> (eq bar baz)))))
> (list (funcall (byte-compile fun))
> (funcall fun)))
> --- END CODE---
>
> Evaluation this code (don't try to byte-compile it, because it is buggy ;-) )
> results in:
>
> --- BEGIN OUTPUT ---
> (t nil)
> --- END OUTPUT ---
This is not a bug. You cannot depend on the uniqueness of literal
strings. If you want to compare strings you should use equal.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
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"And now for something completely different."