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Re: [MIT-Scheme-devel] compiler bug
From: |
Chris Hanson |
Subject: |
Re: [MIT-Scheme-devel] compiler bug |
Date: |
Sat, 19 Sep 2009 16:07:25 -0700 |
OK, I've tracked it down to my last commit, which isn't yet pushed.
It looks like my change tickled some bug in the compiler. I'll chase
it down and fix it before I push.
On Sat, Sep 19, 2009 at 3:42 PM, Chris Hanson <address@hidden> wrote:
> Thanks. So far it's looking like my last commit, but I'll know in an
> hour or so.
>
> On Sat, Sep 19, 2009 at 3:31 PM, Joe Marshall <address@hidden> wrote:
>> If there's anything I can help with, let me know.
>>
>> On Sat, Sep 19, 2009 at 12:58 PM, Chris Hanson <address@hidden> wrote:
>>> Not yet. I've had trouble because some of the commits are broken and
>>> require patching. Also, I got sloppy late last night so I have to
>>> re-do some of the tests. I just semi-automated the testing process
>>> and made a more careful log of the known results. I should have
>>> something in a few hours.
>>>
>>> On Sat, Sep 19, 2009 at 10:28 AM, Joe Marshall <address@hidden> wrote:
>>>> Any luck?
>>>>
>>>> On Fri, Sep 18, 2009 at 8:48 PM, Chris Hanson <address@hidden> wrote:
>>>>> Not sure about that. I'm doing the bisection now. The bug isn't
>>>>> present in commit 745a16218a43692d2c9ecdad72d1bab73fab0522 from Sept.
>>>>> 7, so it's pretty recent.
>>>>>
>>>>> On Fri, Sep 18, 2009 at 8:35 PM, Joe Marshall <address@hidden> wrote:
>>>>>> On Fri, Sep 18, 2009 at 1:57 PM, Chris Hanson <address@hidden> wrote:
>>>>>>> FYI, while testing my most recent changes, I ran across a recent
>>>>>>> compiler bug. To reproduce: using the current compiler, do a fresh
>>>>>>> compile from sources. Then use that compiler to do another fresh
>>>>>>> compile. The second compilation hangs during the compilation of
>>>>>>> "cref/anfile" (the very first file to compile). The problem appears
>>>>>>> to be that the compiler is running map over a list of items, but that
>>>>>>> the list is circular.
>>>>>>
>>>>>> Any indication of what sort of items are in the list?
>>>>>> Any idea of which procedure is being compiled?
>>>>>> What compiler phase?
>>>>>>
>>>>>> I fixed a bug in SF that was preventing things like
>>>>>> ((access vector-ref system-global-environment) ....)
>>>>>> from being optimized. I tested it pretty well on a second and
>>>>>> third generation syntaxing of itself, but maybe it created some
>>>>>> scode that works for the interpreter, but isn't quite kosher
>>>>>> for the compiler.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> ~jrm
>>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> ~jrm
>>>>
>>>
>>
>>
>>
>> --
>> ~jrm
>>
>
- Re: [MIT-Scheme-devel] compiler bug, (continued)
Re: [MIT-Scheme-devel] compiler bug, Joe Marshall, 2009/09/18
Re: [MIT-Scheme-devel] compiler bug, Joe Marshall, 2009/09/18