GNU bug report logs - #39997
High CPU load and no return value with 3.0.0

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Message #16 received at 39997 <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: Roel Janssen <roel <at> gnu.org>
Cc: 39997 <at> debbugs.gnu.org
Subject: Re: bug#39997: High CPU load and no return value with 3.0.0
Date: Wed, 11 Mar 2020 15:05:43 +0100

Roel Janssen <roel <at> gnu.org> skribis:

> On Wed, 2020-03-11 at 12:07 +0100, Ludovic Courtès wrote:

[...]

>> The Guix package has this patch:
>> 
>>         '(begin
>>            ;; Work around miscompilation on Guile 3.0.0 at -O2:
>>            ;; <https://bugs.gnu.org/39251>;.
>>            (substitute* "src/md5.scm"
>>              (("\\(define f-ash ash\\)")
>>               "(define f-ash (@ (guile) ash))\n")
>>              (("\\(define f-add \\+\\)")
>>               "(define f-add (@ (guile) +))\n"))
>>            #t)
>> 
>> It’s very likely that you’re hitting this problem.
>
> Yes!  Thanks for sharing this fix.
> I applied the same changes to my code and now I don't encounter the bug
> anymore.
>
> I tested the patched code with both guile-2.2 and guile-3.0.  Do you
> know whether this will also work with guile-2.0?  (I'd like to keep
> things compatible with guile-2.0 for a few more years).

Yes, the change above also works for Guile 2.0.

Ludo’.

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