GNU bug report logs - #58154
fluid-ref* with negative index segfaults

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Maxime Devos <maximedevos <at> telenet.be>
Subject: bug#58154: closed (Re: bug#58154: fluid-ref* with negative index
 segfaults)
Date: Fri, 30 Sep 2022 14:41:02 +0000

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Your bug report

#58154: fluid-ref* with negative index segfaults

which was filed against the guile package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 58154 <at> debbugs.gnu.org.

-- 
58154: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=58154
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: lloda <lloda <at> sarc.name>
To: Maxime Devos <maximedevos <at> telenet.be>
Cc: 58154-done <at> debbugs.gnu.org
Subject: Re: bug#58154: fluid-ref* with negative index segfaults
Date: Fri, 30 Sep 2022 16:39:53 +0200

Fixed in c0004442b7691f59a0e37869ef288eb26382ad9e. Thank you!

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From: Maxime Devos <maximedevos <at> telenet.be>
To: bug-guile <at> gnu.org
Subject: fluid-ref* with negative index segfaults
Date: Thu, 29 Sep 2022 00:33:24 +0200

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antipode <at> antipode ~$ guile -c '(fluid-ref* (make-fluid) -1)'
Backtrace:
In ice-9/boot-9.scm:
  1752:10  6 (with-exception-handler _ _ #:unwind? _ # _)
In unknown file:
           5 (apply-smob/0 #<thunk 7fdfaaa642e0>)
In ice-9/boot-9.scm:
    724:2  4 (call-with-prompt ("prompt") #<procedure 7fdfaaa76cc0 …> …)
In ice-9/eval.scm:
    619:8  3 (_ #(#(#<directory (guile-user) 7fdfaaa69c80>)))
In ice-9/command-line.scm:
   185:19  2 (_ #<input: string 7fdfaaa63850>)
In unknown file:
           1 (eval (fluid-ref* (make-fluid) -1) #<directory (guile-u…>)
           0 (fluid-ref* #<fluid 7fdfaaa77e20> -1)

ERROR: In procedure fluid-ref*:
Value out of range Segmentatiefout

While the negative index was bogus, I don't think segfaulting is the 
answer, a 'Value out of range' exceptio nwould have sufficed.

Greetings,
Maxime.

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