GNU bug report logs - #20087
'gensym' is not guaranteed to return a fresh symbol

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Package: guile;

Reported by: ludo <at> gnu.org (Ludovic Courtès)

Date: Wed, 11 Mar 2015 17:16:02 UTC

Severity: normal

Done: Andy Wingo <wingo <at> pobox.com>

Bug is archived. No further changes may be made.

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From: rain1 <at> openmailbox.org
To: 20087 <at> debbugs.gnu.org
Subject: bug#20087: gensym
Date: Fri, 18 Mar 2016 17:03:27 +0000

[Message part 1 (text/plain, inline)]
Hello

I agree, this goes against the main assumption people have about gensym. 
I was able to reproduce the bug.

Here's a patch to libguile/symbol.c which fixes this behavior by 
incrementing the gensym counter in a loop until it creates a fresh 
symbol.

[guile-gensym-fix.diff (text/x-diff, attachment)]
This bug report was last modified 9 years and 30 days ago.

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