Re: Troubles with OSX

> Hi Cyril and Frederic.
>
> Ahh - of course, I forgot about SmartEiffel stripping the executable.  :-)
>
> I also forgot to mention that I'm running an Intel mac, not a PowerPC
> mac (it's a MacBook Pro).
>
> Well, I compiled my test application with '-g -no_strip' and found out
> where it's dying.  The application I'm running is basically a large
> unit test app for a data structure library that I've built up over the
> years using SmartEiffel.  The particular code it's dying on relates to
> when I'm inserting values into an AVL set that I wrote.  The exact C
> code is in a gc_mark function.  In particular:
>
>     typedef struct S368 T368;
>     struct S368{T2 _element;T0* _parent;T0* _left;T0* _right;T0*
> _prev;T0* _next;T2 _level;};
>
>     void gc_mark368(T368*o){
>     begin:
>     if(((gc368*)o)->header.flag==FSOH_UNMARKED){
>     ((gc368*)o)->header.flag=FSOH_MARKED;
> #   /*7p*/if(NULL!=o->_next)gc_mark368((T368*)(o->_next));
>     /*7p*/if(NULL!=o->_prev)gc_mark368((T368*)(o->_prev));
>     /*7p*/if(NULL!=o->_right)gc_mark368((T368*)(o->_right));
>     /*7p*/if(NULL!=o->_left)gc_mark368((T368*)(o->_left));
>     o=(void*)o->_parent;
>     if((o!=NULL))goto begin;
>     }
>     }
>
> It's dying on the line denoted by the '#'.  This structure refers to a
> node in my tree, which contains pointers to the left and right
> children as well as pointers to the next and previous nodes (ordered
> over the elements of the set).  The exact error message is:
>
>     Program received signal EXC_BAD_ACCESS, Could not access memory.
>     Reason: KERN_PROTECTION_FAILURE at address: 0xbf7ffffc
>     0x00060963 in gc_mark368 (o=0x1bdd058) at tst11.c:8784
>     8784    /*7p*/if(NULL!=o->_next)gc_mark368((T368*)(o->_next));
>
> The odd thing is that the address 0xbf7ffffc is always the offending
> address, even when I encounter this error in other applications.  Is
> there anything else I can do to shed some more light?
>