Re: [MIT-Scheme-devel] compiler bug

[Joe Marshall]

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