[libc++] Use __extension__ in a portable manner
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@370889 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/__config b/include/__config
index 0d9d723..03725e2 100644
--- a/include/__config
+++ b/include/__config
@@ -485,6 +485,8 @@
#define _LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS
#endif
+#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__
+
#elif defined(_LIBCPP_COMPILER_GCC)
#define _ALIGNAS(x) __attribute__((__aligned__(x)))
@@ -520,6 +522,8 @@
#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__))
+#define _LIBCPP_DISABLE_EXTENSION_WARNING __extension__
+
#elif defined(_LIBCPP_COMPILER_MSVC)
#define _LIBCPP_TOSTRING2(x) #x
@@ -545,6 +549,8 @@
#define _LIBCPP_HAS_NO_VECTOR_EXTENSION
+#define _LIBCPP_DISABLE_EXTENSION_WARNING
+
#elif defined(_LIBCPP_COMPILER_IBM)
#define _ALIGNAS(x) __attribute__((__aligned__(x)))
@@ -565,6 +571,8 @@
#define _LIBCPP_HAS_NO_VECTOR_EXTENSION
+#define _LIBCPP_DISABLE_EXTENSION_WARNING
+
#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM]
#if defined(_LIBCPP_OBJECT_FORMAT_COFF)
diff --git a/include/atomic b/include/atomic
index 0118ab5..6904dd4 100644
--- a/include/atomic
+++ b/include/atomic
@@ -920,7 +920,7 @@
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_CONSTEXPR explicit __cxx_atomic_base_impl(_Tp value) _NOEXCEPT
: __a_value(value) {}
- __extension__ _Atomic(_Tp) __a_value;
+ _LIBCPP_DISABLE_EXTENSION_WARNING _Atomic(_Tp) __a_value;
};
#define __cxx_atomic_is_lock_free(__s) __c11_atomic_is_lock_free(__s)
