Neal D. Becker wrote:
> Here is some more on this problem. Perhaps someone on this list has
> some ideas where to look? Defining BOOST_NO_THREAD (or whatever it
> was) will "fix" the problem, but I suspect it's not the correct fix.
> The code will link OK dynamically, but not statically. That's
> strange.
I'm not sure how you determine the correctness of the BOOST_DISABLE_THREADS
fix.
Defining BOOST_DISABLE_THREADS causes Boost.Config to not define
BOOST_HAS_THREADS, even if the platform is detected as multithreaded.
boost::shared_ptr uses BOOST_HAS_THREADS to determine whether to synchronize
reference count updates, see for example boost/detail/shared_count.hpp:118:
void add_ref()
{
#if defined(BOOST_HAS_THREADS)
mutex_type::scoped_lock lock(mtx_);
#endif
if(use_count_ == 0 && weak_count_ != 0)
boost::throw_exception(boost::bad_weak_ptr());
++use_count_;
++weak_count_;
}
On your platform mutex_type is defined in boost/detail/lwm_pthreads.hpp. It
doesn't use #pragma weak. I wasn't able to find #pragma weak, how it is
used, and the proper procedure in making a component "weakly pthread aware"
documented anywhere. If someone knows what to do, a patch would be
appreciated.
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