Re: [Gcl-devel] SGC on MacOS X (continued)

[Camm Maguire]

Greetings!  Will investigate further, but my hunch is that one of the
mark origins (arguments to enter_mark_origin) lie on the same page as
your sgc_type_map.  Can you confirm?

Take care,

Aurelien Chanudet <address@hidden> writes:

> Hi Camm & all,
> 
> I looked at my SGC issue during the week-end.
> 
> It turns out that the test below (at the beginning of
> sgc_start in sgbc.c) never evaluates to true, thus
> resulting in a sgc_type_map array never marked as
> writable.
> 
> if (npp<MAXPAGE && sgc_type_map[npp] !=
> SGC_PERM_WRITABLE)
>    
> perm_writable(&sgc_type_map[0],sizeof(sgc_type_map));
> 
> Modifying this test to make it evaluate to true
> apparently solves the problem. So now the question
> that is left to solve is : why does this test evaluate
> to false ? I noticed that, at this point in the
> program execution, my sgc_type_map array holds the
> following values :
> 
> sgc_type_map[page(sgc_type_map)]=4
> sgc_type_map[page(sgc_type_map)+1]=0
> sgc_type_map[page(sgc_type_map)+2]=0
> ...
> sgc_type_map[page(sgc_type_map+sizeof(sgc_type_map))-1]=0
> 
> Any clue as to what's going wrong ?
> 
> Thanks,
> Aurelien
> 
> 
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-- 
Camm Maguire                                            address@hidden
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