Reduce compiler warnings when boost uses std-atomics
This works around for compilers with non-static-data-member initialization. spinlock_t is-a struct { lockType _; } and BOOST_DETAIL_SPINLOCK_INIT initializes the first member of the struct. All defines of BOOST_DETAIL_SPINLOCK_INIT include c-style curly braces to initialize the struct's data member. However, modern C++ compiler interpret the braces differently resulting in copy constriction of the initializer.
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@ -28,10 +28,17 @@
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using namespace PBD;
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using namespace PBD;
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spinlock_t::spinlock_t ()
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spinlock_t::spinlock_t ()
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#ifdef BOOST_SMART_PTR_DETAIL_SPINLOCK_STD_ATOMIC_HPP_INCLUDED
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/* C++11 non-static data member initialization,
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* with non-copyable std::atomic ATOMIC_FLAG_INIT
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*/
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: l {BOOST_DETAIL_SPINLOCK_INIT} {}
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#else
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/* default C++ assign struct's first member */
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{
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{
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boost::detail::spinlock init = BOOST_DETAIL_SPINLOCK_INIT;
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l = BOOST_DETAIL_SPINLOCK_INIT;
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std::memcpy (&l, &init, sizeof (init));
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}
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}
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#endif
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SpinLock::SpinLock (spinlock_t& lock)
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SpinLock::SpinLock (spinlock_t& lock)
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: _lock (lock)
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: _lock (lock)
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