diff --git a/include/__config b/include/__config
index 369417c4..3df583fd 100644
--- a/include/__config
+++ b/include/__config
@@ -391,6 +391,12 @@ template <unsigned> struct __static_assert_check {};
 #define _LIBCPP_CONSTEXPR constexpr
 #endif
 
+#ifdef __GNUC__
+#define _NOALIAS __attribute__((malloc))
+#else
+#define _NOALIAS
+#endif
+
 #ifndef __has_feature
 #define __has_feature(__x) 0
 #endif
diff --git a/include/new b/include/new
index 5bcbad0c..ae0951a7 100644
--- a/include/new
+++ b/include/new
@@ -96,7 +96,7 @@ _LIBCPP_VISIBLE void* operator new(std::size_t __sz)
     throw(std::bad_alloc)
 #endif
 ;
-_LIBCPP_VISIBLE void* operator new(std::size_t __sz, const std::nothrow_t&) _NOEXCEPT;
+_LIBCPP_VISIBLE void* operator new(std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS;
 _LIBCPP_VISIBLE void  operator delete(void* __p) _NOEXCEPT;
 _LIBCPP_VISIBLE void  operator delete(void* __p, const std::nothrow_t&) _NOEXCEPT;
 
@@ -105,7 +105,7 @@ _LIBCPP_VISIBLE void* operator new[](std::size_t __sz)
     throw(std::bad_alloc)
 #endif
 ;
-_LIBCPP_VISIBLE void* operator new[](std::size_t __sz, const std::nothrow_t&) _NOEXCEPT;
+_LIBCPP_VISIBLE void* operator new[](std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS;
 _LIBCPP_VISIBLE void  operator delete[](void* __p) _NOEXCEPT;
 _LIBCPP_VISIBLE void  operator delete[](void* __p, const std::nothrow_t&) _NOEXCEPT;