[PATCH] D17951: Implement is_always_lock_free

[Ben Craig via cfe-commits]

bcraig added a subscriber: bcraig.

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Comment at: include/atomic:859
@@ +858,3 @@
+template <> _LIBCPP_CONSTEXPR bool __libcpp_always_lock_free<char32_t> = 2 == ATOMIC_CHAR32_T_LOCK_FREE;
+template <> _LIBCPP_CONSTEXPR bool __libcpp_always_lock_free<wchar_t> = 2 == ATOMIC_WCHAR_T_LOCK_FREE;
+template <> _LIBCPP_CONSTEXPR bool __libcpp_always_lock_free<short> = 2 == ATOMIC_SHORT_LOCK_FREE;
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Do we need to support configurations were wchar_t is a typedef to an integer type, or is that an abomination too painful to deal with?

I have no idea if the rest of libcxx attempts to deal with wchar_t typedefs.


http://reviews.llvm.org/D17951