Re: [MIT-Scheme-devel] compiler bug

[Chris Hanson]

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
>