Enable QAtomicInteger for char16_t and char32_t

Those are regular, integer types, of 16- and 32-bit width,
respectively. C++11's std::atomic supports them, so we should too.

C++11 also supports wchar_t, but since that type's size can change, I
don't feel like support for it in Qt is pressing.

Change-Id: I945b641c91a8a98be82715f878c382dee58ac98b
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/corelib/arch/qatomic_msvc.h b/src/corelib/arch/qatomic_msvc.h
index f5801a2939..41c526b9a6 100644
--- a/src/corelib/arch/qatomic_msvc.h
+++ b/src/corelib/arch/qatomic_msvc.h
@@ -266,6 +266,9 @@ template<> struct QAtomicIntegerTraits<int> { enum { IsInteger = 1 }; };
 template<> struct QAtomicIntegerTraits<unsigned int> { enum { IsInteger = 1 }; };
 template<> struct QAtomicIntegerTraits<long> { enum { IsInteger = 1 }; };
 template<> struct QAtomicIntegerTraits<unsigned long> { enum { IsInteger = 1 }; };
+#ifdef Q_COMPILER_UNICODE_STRINGS
+template<> struct QAtomicIntegerTraits<char32_t> { enum { IsInteger = 1 }; };
+#endif
 
 // No definition, needs specialization
 template <int N> struct QAtomicOpsBySize;