Compiler noise due to -Wcast-qual

[brycelelbach]

[reported by maciek] [Trac time Wed Nov 30 17:50:30 2011] g++ 4.5.3 generates excessive amounts of warnings due to qualifiers being cast away in one of the sources. Example below:

In file included from /home/maciek/Projects/parallex/trunk/hpx/external/atomic/boost/atomic/detail/base.hpp:10:0,
                 from /home/maciek/Projects/parallex/trunk/hpx/external/atomic/boost/atomic/detail/gcc-x86.hpp:11,
                 from /home/maciek/Projects/parallex/trunk/hpx/external/atomic/boost/atomic/platform.hpp:11,
                 from /home/maciek/Projects/parallex/trunk/hpx/external/atomic/boost/atomic.hpp:15,
                 from /home/maciek/Projects/parallex/trunk/hpx/external/coroutine/boost/coroutine/detail/context_linux_x86.hpp:19,
                 from /home/maciek/Projects/parallex/trunk/hpx/external/coroutine/boost/coroutine/detail/default_context_impl.hpp:107,
                 from /home/maciek/Projects/parallex/trunk/hpx/external/coroutine/boost/coroutine/coroutine.hpp:33,
                 from /home/maciek/Projects/parallex/trunk/hpx/hpx/hpx_fwd.hpp:28,
                 from /home/maciek/Projects/parallex/trunk/hpx/src/exception.cpp:7:
/home/maciek/Projects/parallex/trunk/hpx/external/atomic/boost/atomic/detail/fallback.hpp: In member function ‘T boost::detail::atomic::fallback_atomic<T>::load(boost::memory_order) const volatile [with T = boost::lockfree::tagged_ptr_pair<boost::lockfree::deque_node<hpx::threads::thread*>, boost::lockfree::deque_node<hpx::threads::thread*> >]’:
/home/maciek/Projects/parallex/trunk/hpx/external/lockfree/boost/lockfree/deque.hpp:95:25:   instantiated from ‘boost::lockfree::deque_anchor<T>::pair boost::lockfree::deque_anchor<T>::lrs() const volatile [with T = hpx::threads::thread*, boost::lockfree::deque_anchor<T>::pair = boost::lockfree::tagged_ptr_pair<boost::lockfree::deque_node<hpx::threads::thread*>, boost::lockfree::deque_node<hpx::threads::thread*> >]’
/home/maciek/Projects/parallex/trunk/hpx/external/lockfree/boost/lockfree/deque.hpp:276:46:   instantiated from ‘bool boost::lockfree::deque<T, freelist_t, Alloc>::empty() const [with T = hpx::threads::thread*, freelist_t = boost::lockfree::caching_freelist_t, Alloc = std::allocator<hpx::threads::thread*>]’
/home/maciek/Projects/parallex/trunk/hpx/hpx/runtime/threads/policies/thread_deque.hpp:206:40:   instantiated from here
/home/maciek/Projects/parallex/trunk/hpx/external/atomic/boost/atomic/detail/fallback.hpp:32:9: warning: cast from type ‘const volatile boost::lockfree::tagged_ptr_pair<boost::lockfree::deque_node<hpx::threads::thread*>, boost::lockfree::deque_node<hpx::threads::thread*> >*’ to type ‘boost::lockfree::tagged_ptr_pair<boost::lockfree::deque_node<hpx::threads::thread*>, boost::lockfree::deque_node<hpx::threads::thread*> >*’ casts away qualifiers [-Wcast-qual]
/home/maciek/Projects/parallex/trunk/hpx/external/atomic/boost/atomic/detail/fallback.hpp: In member function ‘T boost::detail::atomic::fallback_atomic<T>::load(boost::memory_order) const volatile [with T = boost::lockfree::tagged_ptr_pair<boost::lockfree::deque_node<const boost::tuples::tuple<hpx::threads::thread_init_data, hpx::threads::thread_state_enum>*>, boost::lockfree::deque_node<const boost::tuples::tuple<hpx::threads::thread_init_data, hpx::threads::thread_state_enum>*> >]’:
/home/maciek/Projects/parallex/trunk/hpx/external/lockfree/boost/lockfree/deque.hpp:95:25:   instantiated from ‘boost::lockfree::deque_anchor<T>::pair boost::lockfree::deque_anchor<T>::lrs() const volatile [with T = const boost::tuples::tuple<hpx::threads::thread_init_data, hpx::threads::thread_state_enum>*, boost::lockfree::deque_anchor<T>::pair = boost::lockfree::tagged_ptr_pair<boost::lockfree::deque_node<const boost::tuples::tuple<hpx::threads::thread_init_data, hpx::threads::thread_state_enum>*>, boost::lockfree::deque_node<const boost::tuples::tuple<hpx::threads::thread_init_data, hpx::threads::thread_state_enum>*> >]’
/home/maciek/Projects/parallex/trunk/hpx/external/lockfree/boost/lockfree/deque.hpp:405:43:   instantiated from ‘bool boost::lockfree::deque<T, freelist_t, Alloc>::pop_left(T&) [with T = const boost::tuples::tuple<hpx::threads::thread_init_data, hpx::threads::thread_state_enum>*, freelist_t = boost::lockfree::caching_freelist_t, Alloc = std::allocator<const boost::tuples::tuple<hpx::threads::thread_init_data, hpx::threads::thread_state_enum>*>]’
/home/maciek/Projects/parallex/trunk/hpx/hpx/runtime/threads/policies/thread_deque.hpp:39:32:   instantiated from ‘bool hpx::threads::policies::dequeue(Queue&, Value&) [with Queue = boost::lockfree::deque<const boost::tuples::tuple<hpx::threads::thread_init_data, hpx::threads::thread_state_enum>*>, Value = const boost::tuples::tuple<hpx::threads::thread_init_data, hpx::threads::thread_state_enum>*]’
/home/maciek/Projects/parallex/trunk/hpx/hpx/runtime/threads/policies/thread_deque.hpp:86:55:   instantiated from here
/home/maciek/Projects/parallex/trunk/hpx/external/atomic/boost/atomic/detail/fallback.hpp:32:9: warning: cast from type ‘const volatile boost::lockfree::tagged_ptr_pair<boost::lockfree::deque_node<const boost::tuples::tuple<hpx::threads::thread_init_data, hpx::threads::thread_state_enum>*>, boost::lockfree::deque_node<const boost::tuples::tuple<hpx::threads::thread_init_data, hpx::threads::thread_state_enum>*> >*’ to type ‘boost::lockfree::tagged_ptr_pair<boost::lockfree::deque_node<const boost::tuples::tuple<hpx::threads::thread_init_data, hpx::threads::thread_state_enum>*>, boost::lockfree::deque_node<const boost::tuples::tuple<hpx::threads::thread_init_data, hpx::threads::thread_state_enum>*> >*’ casts away qualifiers [-Wcast-qual]

[brycelelbach]

[comment by blelbach] [Trac time Sat Dec 10 19:47:42 2011] Can't reproduce this.