GNU bug report logs - #24884
Segfault on (mkstemp! "XX" 0)

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Jean Louis <bugs <at> gnu.support>
Subject: bug#24884: closed (Re: bug#24884: Segfault on (mkstemp! "XX" 0))
Date: Wed, 01 Mar 2017 13:53:02 +0000

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Your bug report

#24884: Segfault on (mkstemp! "XX" 0)

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 24884 <at> debbugs.gnu.org.

-- 
24884: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=24884
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Andy Wingo <wingo <at> pobox.com>
To: Jean Louis <bugs <at> gnu.support>
Cc: 24884-done <at> debbugs.gnu.org
Subject: Re: bug#24884: Segfault on (mkstemp! "XX" 0)
Date: Wed, 01 Mar 2017 14:52:37 +0100

On Wed 11 Jan 2017 22:33, Andy Wingo <wingo <at> pobox.com> writes:

> On Sat 05 Nov 2016 19:16, Jean Louis <bugs <at> gnu.support> writes:
>
>> I was just testing a function, and before I figured out what is
>> happening, it is segfaulting on:
>> (mkstemp! "XX" 0)
>>
>> I don't say, I am using it right. It should not segfault.
>
> I agree.  This is a pending topic in Guile.  (The reason, of course:
> mutating literal constants is not valid Scheme.  Guile allocates
> some constant literals in read-only memory.  Mutating that memory, or
> attempting to do so, segfaults, as you have seen.  We should raise an
> error instead.)

Sigh, spoke too soon.  This one turned out to be a rather more ordinary
bug.  Fixed in git on both branches.  Thanks for the report!

Andy

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From: Jean Louis <bugs <at> gnu.support>
To: bug-guile <at> gnu.org
Subject: Segfault on (mkstemp! "XX" 0)
Date: Sat, 5 Nov 2016 21:16:58 +0300

I was just testing a function, and before I figured out what is
happening, it is segfaulting on:
(mkstemp! "XX" 0)

I don't say, I am using it right. It should not segfault.

Jean

guile (GNU Guile) 2.0.13
Copyright (C) 2016 Free Software Foundation, Inc.

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