Re: very elusive ml-build issue

John Reppy <[email protected]> Tue, 20 Feb 2007 22:32:55 -0600
Newsgroups gmane.comp.lang.sml.smlnj
Message-ID <[email protected]>
So I think that I understand the source of the bug now.  The problem  
is in the SaveCState/RestoreCState
calls that bracket the BuildLiterals operation.  The SaveCState  
function allocates a heap record to
preserve C variables across potential GCs; in this case the record  
has two elements, which means that
it gets converted to a tagless pair object when a GC happens in  
BuildLiterals.  Since the RestoreCState
function depends on the object length to figure out how many values  
to restore, it fails.  It should be
pretty easy to code a fix.

	- John

On Feb 20, 2007, at 7:38 PM, Dave Herman wrote:

>> Have you been able to reproduce this error on any system other  
>> than  cygwin?  I'll try my Intel
>> Mac when I get home, since perhaps it is an intel-specific problem.
>
> On the only mac I have available to me at the moment, it crashed  
> with a bus error at 2000, and built fine at 1000. I'll try my PPC  
> mac at home, too, but it's even wimpier than the one I have at work.
>
> Thanks,
> Dave
>


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