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Re: srfi-18 and the vm
From: |
Ludovic Courtès |
Subject: |
Re: srfi-18 and the vm |
Date: |
Sat, 23 May 2009 00:04:48 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.0.90 (gnu/linux) |
Andy Wingo <address@hidden> writes:
> On Fri 22 May 2009 17:10, address@hidden (Ludovic Courtès) writes:
>> Andy Wingo <address@hidden> writes:
>>
>>> I'm catching up with mail. On my syncase-in-boot-9 branch, I enabled
>>> compilation of srfi-18 and fixed a bug in it regarding multiple-value
>>> returns. Now I just ran the srfi-18 test like 100 times in a row and it
>>> didn't show any strange errors. Yaaaay!
>>
>> What kind of "strange errors" would it lead to before?
>
> Random ones based on races, as code was lazily memoized from multiple
> threads at once.
OK (I thought you were referring to errors related to multiple-value
returns.) Then, indeed, yaay!
> Indeed. The VM truncates multiple values, but here we were doing a (let
> ((x (values))) something x), which returned 0 values to a continuation
> needing a value, raising a valid error. Fixed that in the original
> source code.
>
> In addition, we were sometimes getting 0 values in a for-effect context,
> which the GHIL->GLIL compiler didn't support. Like this:
>
> (begin (call/cc (lambda (k) (k))) 10)
>
> I've fixed this in the tree-il->glil compiler.
Thanks for the explanation.
Ludo'.
- srfi-18 and the vm, Andy Wingo, 2009/05/22
- Re: srfi-18 and the vm, Julian Graham, 2009/05/22
- Re: srfi-18 and the vm, Ludovic Courtès, 2009/05/22
- Re: srfi-18 and the vm, Neil Jerram, 2009/05/23
- Re: srfi-18 and the vm, Andy Wingo, 2009/05/23
- Re: srfi-18 and the vm, Ludovic Courtès, 2009/05/23
- Re: srfi-18 and the vm, Andy Wingo, 2009/05/23
- Re: srfi-18 and the vm, Ludovic Courtès, 2009/05/24
- Re: srfi-18 and the vm, Neil Jerram, 2009/05/25
- Re: srfi-18 and the vm, Andy Wingo, 2009/05/29
- Re: srfi-18 and the vm, Neil Jerram, 2009/05/30
- Re: srfi-18 and the vm, Andy Wingo, 2009/05/31