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diff --git mfbt/Util.h mfbt/Util.h
index e0843ca..353ec36 100644
--- mfbt/Util.h
+++ mfbt/Util.h
@@ -19,6 +19,13 @@
namespace mozilla {
+#if defined(MOZ_HAVE_CXX11_ALIGNAS)
+#define MOZ_ALIGNOF(T) alignof(T)
+#elif defined(__GNUC__)
+#define MOZ_ALIGNOF(T) __alignof__(T)
+#elif defined(_MSC_VER)
+#define MOZ_ALIGNOF(T) __alignof(T)
+#else
/*
* This class, and the corresponding macro MOZ_ALIGNOF, figure out how many
* bytes of alignment a given type needs.
@@ -37,6 +44,7 @@ class AlignmentFinder
};
#define MOZ_ALIGNOF(T) mozilla::AlignmentFinder<T>::alignment
+#endif
/*
* Declare the MOZ_ALIGNED_DECL macro for declaring aligned types.
@@ -48,7 +56,10 @@ class AlignmentFinder
* will declare a two-character array |arr| aligned to 8 bytes.
*/
-#if defined(__GNUC__)
+#if defined(MOZ_HAVE_CXX11_ALIGNAS)
+# define MOZ_ALIGNED_DECL(_type, _align) \
+ alignas(_align) _type
+#elif defined(__GNUC__)
# define MOZ_ALIGNED_DECL(_type, _align) \
_type __attribute__((aligned(_align)))
#elif defined(_MSC_VER)
diff --git mfbt/Attributes.h mfbt/Attributes.h
index d317766..ddb13da 100644
--- mfbt/Attributes.h
+++ mfbt/Attributes.h
@@ -67,6 +67,9 @@
# ifndef __has_extension
# define __has_extension __has_feature /* compatibility, for older versions of clang */
# endif
+# if __has_extension(cxx_alignas)
+# define MOZ_HAVE_CXX11_ALIGNAS
+# endif
# if __has_extension(cxx_constexpr)
# define MOZ_HAVE_CXX11_CONSTEXPR
# endif
@@ -85,6 +88,9 @@
# endif
#elif defined(__GNUC__)
# if defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L
+# if MOZ_GCC_VERSION_AT_LEAST(4, 8, 0)
+# define MOZ_HAVE_CXX11_ALIGNAS
+# endif
# if MOZ_GCC_VERSION_AT_LEAST(4, 7, 0)
# define MOZ_HAVE_CXX11_OVERRIDE
# define MOZ_HAVE_CXX11_FINAL final
@@ -102,6 +108,9 @@
# define MOZ_HAVE_NEVER_INLINE __attribute__((noinline))
# define MOZ_HAVE_NORETURN __attribute__((noreturn))
#elif defined(_MSC_VER)
+# if _MSC_VER >= 1800
+# define MOZ_HAVE_CXX11_ALIGNAS
+# endif
# if _MSC_VER >= 1700
# define MOZ_HAVE_CXX11_FINAL final
# else
|
