From: Christopher Hunt (huntc_at_[hidden])
Date: 2005-08-01 20:30:49
I forgot to mention one other (important) thing: I'm using libgmalloc
(http://developer.apple.com/documentation/Darwin/Reference/ManPages/
man3/libgmalloc.3.html).
When I don't use this guard-malloc approach, all is well. :-P
-C
On 02/08/2005, at 10:52 AM, Christopher Hunt wrote:
> I have some more information and a work-around. I can now reproduce
> this problem in my Obj-C program with the following code:
>
> typedef checked_array_deleter<unsigned short> deleter;
> detail::sp_counted_base_impl<unsigned short, deleter>* theP = new
> detail::sp_counted_base_impl<unsigned short, deleter>(0, deleter());
>
> However if I define either BOOST_SP_USE_QUICK_ALLOCATOR or
> BOOST_SP_USE_STD_ALLOCATOR then all is well. :-)
>
> Here's my new stack trace for when things don't go well:
>
> #0 0x90012d68 in pthread_mutex_init
> #1 0x00088484 in boost::detail::lightweight_mutex::lightweight_mutex()
> at lwm_pthreads.hpp:47
> #2 0x00088084 in boost::detail::lightweight_mutex::lightweight_mutex()
> at lwm_pthreads.hpp:49
> #3 0x00087c24 in boost::detail::sp_counted_base::sp_counted_base() at
> shared_count.hpp:98
> #4 0x00086674 in boost::detail::sp_counted_base::sp_counted_base() at
> shared_count.hpp:99
> #5 0x00097f64 in boost::detail::sp_counted_base_impl<unsigned short,
> boost::checked_array_deleter<unsigned short>
> >::sp_counted_base_impl(unsigned short,
> boost::checked_array_deleter<unsigned short>) at shared_count.hpp:253
> #6 0x00097f0c in boost::detail::sp_counted_base_impl<unsigned short,
> boost::checked_array_deleter<unsigned short>
> >::sp_counted_base_impl(unsigned short,
> boost::checked_array_deleter<unsigned short>) at shared_count.hpp:253
>
> This thus looks like something to do with allocators and
> sp_counted_based_impl...
>
> I don't see that my Obj-C environment has set up anything interesting
> by the way of allocators, and I did create a brand-new Obj-C project
> to see if I could reproduce the problem - I couldn't... however I'm
> thinking that this might well have something to do with Obj-C...
>
> Any ideas?
>
> Also, if I'm to define BOOST_SP_USE_QUICK_ALLOCATOR or
> BOOST_SP_USE_STD_ALLOCATOR then which is best? I've been unable to
> find documentation on the use of these defines.
>
> Thanks for your help.