89cf858571
For some reason r170217 didn't add compare_exchange_weak to the __atomic_base<T*> partial specialization, and so weak compare exchange operations on pointers use compare_exchange_strong instead. This adds __atomic_base<T*>::compare_exchange_weak and then uses it in std::atomic<T*>::compare_exchange_weak. Signed-off-by: Jonathan Wakely <jwakely@redhat.com> libstdc++-v3/ChangeLog: * include/bits/atomic_base.h (__atomic_base<P*>::compare_exchange_weak): Add new functions. * include/std/atomic (atomic<T*>::compare_exchange_weak): Use it. |
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