Index: include/__config
===================================================================
--- include/__config
+++ include/__config
@@ -37,6 +37,9 @@
 #ifndef __has_builtin
 #define __has_builtin(__x) 0
 #endif
+#ifndef __has_extension
+#define __has_extension(__x) 0
+#endif
 #ifndef __has_feature
 #define __has_feature(__x) 0
 #endif
@@ -767,4 +770,15 @@
 #define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
 #endif
 
-#endif  // _LIBCPP_CONFIG
+#if __has_extension(c_atomic)
+#define _LIBCPP_HAS_C_ATOMIC_IMP
+#elif _GNUC_VER > 407
+#define _LIBCPP_HAS_GCC_ATOMIC_IMP
+#endif
+
+#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)) \
+     || defined(_LIBCPP_HAS_NO_THREADS)
+#define _LIBCPP_HAS_NO_ATOMIC_HEADER
+#endif
+
+#endif // _LIBCPP_CONFIG
Index: include/atomic
===================================================================
--- include/atomic
+++ include/atomic
@@ -535,21 +535,20 @@
 
 #ifdef _LIBCPP_HAS_NO_THREADS
 #error <atomic> is not supported on this single threaded system
-#else // !_LIBCPP_HAS_NO_THREADS
+#endif
+#if !defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)
+#error <atomic> is not implemented
+#endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if !__has_feature(cxx_atomic) && _GNUC_VER < 407
-#error <atomic> is not implemented
-#else
-
 typedef enum memory_order
 {
     memory_order_relaxed, memory_order_consume, memory_order_acquire,
     memory_order_release, memory_order_acq_rel, memory_order_seq_cst
 } memory_order;
 
-#if _GNUC_VER >= 407
+#if defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)
 namespace __gcc_atomic {
 template <typename _Tp>
 struct __gcc_atomic_t {
@@ -805,7 +804,7 @@
   return __atomic_fetch_xor(&__a->__a_value, __pattern,
                             __gcc_atomic::__to_gcc_order(__order));
 }
-#endif // _GNUC_VER >= 407
+#endif // _LIBCPP_HAS_GCC_ATOMIC_IMP
 
 template <class _Tp>
 inline _LIBCPP_INLINE_VISIBILITY
@@ -825,7 +824,7 @@
     _LIBCPP_INLINE_VISIBILITY
     bool is_lock_free() const volatile _NOEXCEPT
     {
-#if __has_feature(cxx_atomic)
+#if defined(_LIBCPP_HAS_C_ATOMIC_IMP)
     return __c11_atomic_is_lock_free(sizeof(_Tp));
 #else
     return __atomic_is_lock_free(sizeof(_Tp), 0);
@@ -1779,8 +1778,6 @@
 #define ATOMIC_FLAG_INIT {false}
 #define ATOMIC_VAR_INIT(__v) {__v}
 
-// lock-free property
-
 #define ATOMIC_BOOL_LOCK_FREE      __GCC_ATOMIC_BOOL_LOCK_FREE
 #define ATOMIC_CHAR_LOCK_FREE      __GCC_ATOMIC_CHAR_LOCK_FREE
 #define ATOMIC_CHAR16_T_LOCK_FREE  __GCC_ATOMIC_CHAR16_T_LOCK_FREE
@@ -1792,10 +1789,6 @@
 #define ATOMIC_LLONG_LOCK_FREE     __GCC_ATOMIC_LLONG_LOCK_FREE
 #define ATOMIC_POINTER_LOCK_FREE   __GCC_ATOMIC_POINTER_LOCK_FREE
 
-#endif  //  !__has_feature(cxx_atomic)
-
 _LIBCPP_END_NAMESPACE_STD
 
-#endif  // !_LIBCPP_HAS_NO_THREADS
-
 #endif  // _LIBCPP_ATOMIC
Index: include/ios
===================================================================
--- include/ios
+++ include/ios
@@ -216,7 +216,7 @@
 #include <__locale>
 #include <system_error>
 
-#if __has_feature(cxx_atomic) && !defined(_LIBCPP_HAS_NO_THREADS)
+#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
 #include <atomic>     // for __xindex_
 #endif
 
@@ -367,7 +367,9 @@
     int*            __index_;
     size_t          __event_size_;
     size_t          __event_cap_;
-#if __has_feature(cxx_atomic) && !defined(_LIBCPP_HAS_NO_THREADS)
+// TODO(EricWF): Enable this for both Clang and GCC. Currently it is only
+// enabled with clang.
+#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
     static atomic<int> __xindex_;
 #else
     static int      __xindex_;
Index: include/memory
===================================================================
--- include/memory
+++ include/memory
@@ -612,7 +612,7 @@
     #include <cassert>
 #endif
 
-#if __has_feature(cxx_atomic) && !defined(_LIBCPP_HAS_NO_THREADS)
+#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
 #  include <atomic>
 #endif
 
@@ -5381,7 +5381,9 @@
 basic_ostream<_CharT, _Traits>&
 operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p);
 
-#if __has_feature(cxx_atomic) && !defined(_LIBCPP_HAS_NO_THREADS)
+// TODO(EricWF): Enable this for both Clang and GCC. Currently it is only
+// enabled with clang.
+#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
 
 class _LIBCPP_TYPE_VIS __sp_mut
 {
@@ -5507,7 +5509,7 @@
     return atomic_compare_exchange_weak(__p, __v, __w);
 }
 
-#endif  // __has_feature(cxx_atomic) && !defined(_LIBCPP_HAS_NO_THREADS)
+#endif  // defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
 
 //enum class
 struct _LIBCPP_TYPE_VIS pointer_safety
Index: src/ios.cpp
===================================================================
--- src/ios.cpp
+++ src/ios.cpp
@@ -152,7 +152,7 @@
 }
 
 // xalloc
-#if __has_feature(cxx_atomic) && !defined(_LIBCPP_HAS_NO_THREADS)
+#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
 atomic<int> ios_base::__xindex_ = ATOMIC_VAR_INIT(0);
 #else
 int ios_base::__xindex_ = 0;
Index: src/memory.cpp
===================================================================
--- src/memory.cpp
+++ src/memory.cpp
@@ -124,7 +124,7 @@
 
 #endif  // _LIBCPP_NO_RTTI
 
-#if __has_feature(cxx_atomic) && !defined(_LIBCPP_HAS_NO_THREADS)
+#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
 
 static const std::size_t __sp_mut_count = 16;
 static pthread_mutex_t mut_back_imp[__sp_mut_count] =
@@ -177,7 +177,7 @@
     return muts[hash<const void*>()(p) & (__sp_mut_count-1)];
 }
 
-#endif // __has_feature(cxx_atomic) && !_LIBCPP_HAS_NO_THREADS
+#endif // defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
 
 void
 declare_reachable(void*)
Index: test/std/atomics/atomics.flag/atomic_flag_clear.pass.cpp
===================================================================
--- test/std/atomics/atomics.flag/atomic_flag_clear.pass.cpp
+++ test/std/atomics/atomics.flag/atomic_flag_clear.pass.cpp
@@ -22,13 +22,13 @@
 int main()
 {
     {
-        std::atomic_flag f = ATOMIC_FLAG_INIT;
+        std::atomic_flag f(false);
         f.test_and_set();
         atomic_flag_clear(&f);
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
+        volatile std::atomic_flag f(false);
         f.test_and_set();
         atomic_flag_clear(&f);
         assert(f.test_and_set() == 0);
Index: test/std/atomics/atomics.flag/atomic_flag_clear_explicit.pass.cpp
===================================================================
--- test/std/atomics/atomics.flag/atomic_flag_clear_explicit.pass.cpp
+++ test/std/atomics/atomics.flag/atomic_flag_clear_explicit.pass.cpp
@@ -22,37 +22,37 @@
 int main()
 {
     {
-        std::atomic_flag f = ATOMIC_FLAG_INIT;
+        std::atomic_flag f(false);
         f.test_and_set();
         atomic_flag_clear_explicit(&f, std::memory_order_relaxed);
         assert(f.test_and_set() == 0);
     }
     {
-        std::atomic_flag f = ATOMIC_FLAG_INIT;
+        std::atomic_flag f(false);
         f.test_and_set();
         atomic_flag_clear_explicit(&f, std::memory_order_release);
         assert(f.test_and_set() == 0);
     }
     {
-        std::atomic_flag f = ATOMIC_FLAG_INIT;
+        std::atomic_flag f(false);
         f.test_and_set();
         atomic_flag_clear_explicit(&f, std::memory_order_seq_cst);
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
+        volatile std::atomic_flag f(false);
         f.test_and_set();
         atomic_flag_clear_explicit(&f, std::memory_order_relaxed);
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
+        volatile std::atomic_flag f(false);
         f.test_and_set();
         atomic_flag_clear_explicit(&f, std::memory_order_release);
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
+        volatile std::atomic_flag f(false);
         f.test_and_set();
         atomic_flag_clear_explicit(&f, std::memory_order_seq_cst);
         assert(f.test_and_set() == 0);
Index: test/std/atomics/atomics.flag/clear.pass.cpp
===================================================================
--- test/std/atomics/atomics.flag/clear.pass.cpp
+++ test/std/atomics/atomics.flag/clear.pass.cpp
@@ -22,49 +22,49 @@
 int main()
 {
     {
-        std::atomic_flag f = ATOMIC_FLAG_INIT;
+        std::atomic_flag f(false);
         f.test_and_set();
         f.clear();
         assert(f.test_and_set() == 0);
     }
     {
-        std::atomic_flag f = ATOMIC_FLAG_INIT;
+        std::atomic_flag f(false);
         f.test_and_set();
         f.clear(std::memory_order_relaxed);
         assert(f.test_and_set() == 0);
     }
     {
-        std::atomic_flag f = ATOMIC_FLAG_INIT;
+        std::atomic_flag f(false);
         f.test_and_set();
         f.clear(std::memory_order_release);
         assert(f.test_and_set() == 0);
     }
     {
-        std::atomic_flag f = ATOMIC_FLAG_INIT;
+        std::atomic_flag f(false);
         f.test_and_set();
         f.clear(std::memory_order_seq_cst);
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
+        volatile std::atomic_flag f(false);
         f.test_and_set();
         f.clear();
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
+        volatile std::atomic_flag f(false);
         f.test_and_set();
         f.clear(std::memory_order_relaxed);
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
+        volatile std::atomic_flag f(false);
         f.test_and_set();
         f.clear(std::memory_order_release);
         assert(f.test_and_set() == 0);
     }
     {
-        volatile std::atomic_flag f = ATOMIC_FLAG_INIT;
+        volatile std::atomic_flag f(false);
         f.test_and_set();
         f.clear(std::memory_order_seq_cst);
         assert(f.test_and_set() == 0);
Index: test/std/atomics/atomics.flag/init.pass.cpp
===================================================================
--- test/std/atomics/atomics.flag/init.pass.cpp
+++ test/std/atomics/atomics.flag/init.pass.cpp
@@ -8,6 +8,7 @@
 //===----------------------------------------------------------------------===//
 //
 // UNSUPPORTED: libcpp-has-no-threads
+// XFAIL: c++98, c++03
 
 // <atomic>
 
Index: test/std/atomics/atomics.flag/init03.pass.cpp
===================================================================
--- /dev/null
+++ test/std/atomics/atomics.flag/init03.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: libcpp-has-no-threads
+
+// <atomic>
+
+// struct atomic_flag
+
+// TESTING EXTENSION atomic_flag(bool)
+
+#include <atomic>
+#include <cassert>
+
+int main()
+{
+    std::atomic_flag f(false);
+    assert(f.test_and_set() == 0);
+}
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_strong.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_strong.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_strong.pass.cpp
@@ -24,9 +24,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     {
         typedef std::atomic<T> A;
@@ -54,35 +55,7 @@
     }
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
-
 int main()
 {
-    test<A>();
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<int*>();
-    test<const int*>();
+    TEST_EACH_ATOMIC_TYPE();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_strong_explicit.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_strong_explicit.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_strong_explicit.pass.cpp
@@ -27,9 +27,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     {
         typedef std::atomic<T> A;
@@ -61,35 +62,7 @@
     }
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
-
 int main()
 {
-    test<A>();
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<int*>();
-    test<const int*>();
+    TEST_EACH_ATOMIC_TYPE();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_weak.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_weak.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_weak.pass.cpp
@@ -25,10 +25,10 @@
 #include <cassert>
 
 #include <cmpxchg_loop.h>
+#include "atomic_helpers.h"
 
 template <class T>
-void
-test()
+void test()
 {
     {
         typedef std::atomic<T> A;
@@ -56,35 +56,7 @@
     }
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
-
 int main()
 {
-    test<A>();
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<int*>();
-    test<const int*>();
+    TEST_EACH_ATOMIC_TYPE();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_weak_explicit.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_weak_explicit.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_weak_explicit.pass.cpp
@@ -29,9 +29,10 @@
 
 #include <cmpxchg_loop.h>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     {
         typedef std::atomic<T> A;
@@ -63,35 +64,7 @@
     }
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
-
 int main()
 {
-    test<A>();
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<int*>();
-    test<const int*>();
+    TEST_EACH_ATOMIC_TYPE();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_exchange.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_exchange.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_exchange.pass.cpp
@@ -24,9 +24,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     typedef std::atomic<T> A;
     A t;
@@ -39,35 +40,8 @@
     assert(vt == T(4));
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
 
 int main()
 {
-    test<A>();
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<int*>();
-    test<const int*>();
+    TEST_EACH_ATOMIC_TYPE();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_exchange_explicit.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_exchange_explicit.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_exchange_explicit.pass.cpp
@@ -24,9 +24,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     typedef std::atomic<T> A;
     A t;
@@ -41,35 +42,8 @@
     assert(vt == T(4));
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
 
 int main()
 {
-    test<A>();
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<int*>();
-    test<const int*>();
+    TEST_EACH_ATOMIC_TYPE();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.pass.cpp
@@ -32,9 +32,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     {
         typedef std::atomic<T> A;
@@ -53,8 +54,7 @@
 }
 
 template <class T>
-void
-testp()
+void testp()
 {
     {
         typedef std::atomic<T> A;
@@ -74,38 +74,9 @@
     }
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-    A(const A& a) : i(a.i) {}
-    A(const volatile A& a) : i(a.i) {}
-
-    void operator=(const volatile A& a) volatile {i = a.i;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
-
 int main()
 {
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
+    TEST_EACH_ATOMIC_INTEGRAL();
     testp<int*>();
     testp<const int*>();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.pass.cpp
@@ -32,9 +32,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     {
         typedef std::atomic<T> A;
@@ -78,38 +79,9 @@
     }
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-    A(const A& a) : i(a.i) {}
-    A(const volatile A& a) : i(a.i) {}
-
-    void operator=(const volatile A& a) volatile {i = a.i;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
-
 int main()
 {
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
+    TEST_EACH_ATOMIC_INTEGRAL();
     testp<int*>();
     testp<const int*>();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_and.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_and.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_and.pass.cpp
@@ -23,9 +23,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     {
         typedef std::atomic<T> A;
@@ -45,20 +46,5 @@
 
 int main()
 {
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
+    TEST_EACH_ATOMIC_INTEGRAL();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_and_explicit.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_and_explicit.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_and_explicit.pass.cpp
@@ -23,9 +23,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     {
         typedef std::atomic<T> A;
@@ -47,20 +48,5 @@
 
 int main()
 {
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
+    TEST_EACH_ATOMIC_INTEGRAL();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_or.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_or.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_or.pass.cpp
@@ -23,9 +23,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     {
         typedef std::atomic<T> A;
@@ -45,20 +46,5 @@
 
 int main()
 {
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
+    TEST_EACH_ATOMIC_INTEGRAL();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_or_explicit.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_or_explicit.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_or_explicit.pass.cpp
@@ -23,9 +23,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     {
         typedef std::atomic<T> A;
@@ -47,20 +48,5 @@
 
 int main()
 {
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
+    TEST_EACH_ATOMIC_INTEGRAL();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.pass.cpp
@@ -32,9 +32,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     {
         typedef std::atomic<T> A;
@@ -53,8 +54,7 @@
 }
 
 template <class T>
-void
-testp()
+void testp()
 {
     {
         typedef std::atomic<T> A;
@@ -74,38 +74,9 @@
     }
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-    A(const A& a) : i(a.i) {}
-    A(const volatile A& a) : i(a.i) {}
-
-    void operator=(const volatile A& a) volatile {i = a.i;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
-
 int main()
 {
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
+    TEST_EACH_ATOMIC_INTEGRAL();
     testp<int*>();
     testp<const int*>();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.pass.cpp
@@ -33,9 +33,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     {
         typedef std::atomic<T> A;
@@ -56,8 +57,7 @@
 }
 
 template <class T>
-void
-testp()
+void testp()
 {
     {
         typedef std::atomic<T> A;
@@ -79,38 +79,9 @@
     }
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-    A(const A& a) : i(a.i) {}
-    A(const volatile A& a) : i(a.i) {}
-
-    void operator=(const volatile A& a) volatile {i = a.i;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
-
 int main()
 {
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
+    TEST_EACH_ATOMIC_INTEGRAL();
     testp<int*>();
     testp<const int*>();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_xor.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_xor.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_xor.pass.cpp
@@ -23,9 +23,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     {
         typedef std::atomic<T> A;
@@ -45,20 +46,5 @@
 
 int main()
 {
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
+    TEST_EACH_ATOMIC_INTEGRAL();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_xor_explicit.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_xor_explicit.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_xor_explicit.pass.cpp
@@ -23,6 +23,8 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
 void
 test()
@@ -47,20 +49,5 @@
 
 int main()
 {
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
+    TEST_EACH_ATOMIC_INTEGRAL();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_helpers.h
===================================================================
--- /dev/null
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_helpers.h
@@ -0,0 +1,49 @@
+#ifndef ATOMIC_HELPERS_H
+#define ATOMIC_HELPERS_H
+
+#include <cassert>
+
+#include "test_macros.h"
+
+struct UserAtomicType
+{
+    int i;
+
+    explicit UserAtomicType(int d = 0) TEST_NOEXCEPT : i(d) {}
+
+    friend bool operator==(const UserAtomicType& x, const UserAtomicType& y)
+    { return x.i == y.i; }
+};
+
+#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS
+#define TEST_UNICODE_CHAR_TYPES_IMP()
+#else
+#define TEST_UNICODE_CHAR_TYPES_IMP() \
+  test<char16_t>();                   \
+  test<char32_t>();
+#
+#endif
+
+#define TEST_EACH_ATOMIC_INTEGRAL() \
+    test<char>();                 \
+    test<signed char>();          \
+    test<unsigned char>();        \
+    test<short>();                \
+    test<unsigned short>();       \
+    test<int>();                  \
+    test<unsigned int>();         \
+    test<long>();                 \
+    test<unsigned long>();        \
+    test<long long>();            \
+    test<unsigned long long>();   \
+    TEST_UNICODE_CHAR_TYPES_IMP() \
+    test<wchar_t>()
+
+#define TEST_EACH_ATOMIC_TYPE()   \
+    TEST_EACH_ATOMIC_INTEGRAL();  \
+    test<UserAtomicType>();       \
+    test<int*>();                 \
+    test<const int*>()
+
+
+#endif // ATOMIC_HELPER_H
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_init.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_init.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_init.pass.cpp
@@ -8,7 +8,7 @@
 //===----------------------------------------------------------------------===//
 //
 // UNSUPPORTED: libcpp-has-no-threads
-//  ... assertion fails line 34
+//  ... assertion fails line 36
 
 // <atomic>
 
@@ -24,6 +24,8 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
 void
 test()
@@ -37,35 +39,7 @@
     assert(vt == T(2));
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
-
 int main()
 {
-    test<A>();
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<int*>();
-    test<const int*>();
+    TEST_EACH_ATOMIC_TYPE();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_is_lock_free.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_is_lock_free.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_is_lock_free.pass.cpp
@@ -22,9 +22,10 @@
 #include <atomic>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     typedef std::atomic<T> A;
     A t;
@@ -42,22 +43,5 @@
 int main()
 {
     test<A>();
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<int*>();
-    test<const int*>();
+    TEST_EACH_ATOMIC_TYPE();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_load.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_load.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_load.pass.cpp
@@ -8,7 +8,7 @@
 //===----------------------------------------------------------------------===//
 //
 // UNSUPPORTED: libcpp-has-no-threads
-//  ... assertion fails line 34
+//  ... assertion fails line 35
 
 // <atomic>
 
@@ -24,9 +24,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     typedef std::atomic<T> A;
     A t;
@@ -37,35 +38,7 @@
     assert(std::atomic_load(&vt) == T(2));
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
-
 int main()
 {
-    test<A>();
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<int*>();
-    test<const int*>();
+    TEST_EACH_ATOMIC_TYPE();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_load_explicit.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_load_explicit.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_load_explicit.pass.cpp
@@ -24,9 +24,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     typedef std::atomic<T> A;
     A t;
@@ -37,35 +38,7 @@
     assert(std::atomic_load_explicit(&vt, std::memory_order_seq_cst) == T(2));
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
-
 int main()
 {
-    test<A>();
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<int*>();
-    test<const int*>();
+    TEST_EACH_ATOMIC_TYPE();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_store.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_store.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_store.pass.cpp
@@ -8,7 +8,6 @@
 //===----------------------------------------------------------------------===//
 //
 // UNSUPPORTED: libcpp-has-no-threads
-//  ... assertion fails line 31
 
 // <atomic>
 
@@ -24,9 +23,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     typedef std::atomic<T> A;
     A t;
@@ -37,35 +37,8 @@
     assert(vt == T(2));
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
 
 int main()
 {
-    test<A>();
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<int*>();
-    test<const int*>();
+    TEST_EACH_ATOMIC_TYPE();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_store_explicit.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_store_explicit.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_store_explicit.pass.cpp
@@ -8,7 +8,6 @@
 //===----------------------------------------------------------------------===//
 //
 // UNSUPPORTED: libcpp-has-no-threads
-//  ... assertion fails line 31
 
 // <atomic>
 
@@ -24,9 +23,10 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 template <class T>
-void
-test()
+void test()
 {
     typedef std::atomic<T> A;
     A t;
@@ -37,35 +37,8 @@
     assert(vt == T(2));
 }
 
-struct A
-{
-    int i;
-
-    explicit A(int d = 0) noexcept {i=d;}
-
-    friend bool operator==(const A& x, const A& y)
-        {return x.i == y.i;}
-};
 
 int main()
 {
-    test<A>();
-    test<char>();
-    test<signed char>();
-    test<unsigned char>();
-    test<short>();
-    test<unsigned short>();
-    test<int>();
-    test<unsigned int>();
-    test<long>();
-    test<unsigned long>();
-    test<long long>();
-    test<unsigned long long>();
-    test<wchar_t>();
-#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<char16_t>();
-    test<char32_t>();
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
-    test<int*>();
-    test<const int*>();
+    TEST_EACH_ATOMIC_TYPE();
 }
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_var_init.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_var_init.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_var_init.pass.cpp
@@ -8,6 +8,7 @@
 //===----------------------------------------------------------------------===//
 //
 // UNSUPPORTED: libcpp-has-no-threads
+// XFAIL: c++98, c++03
 
 // <atomic>
 
Index: test/std/atomics/atomics.types.operations/atomics.types.operations.req/ctor.pass.cpp
===================================================================
--- test/std/atomics/atomics.types.operations/atomics.types.operations.req/ctor.pass.cpp
+++ test/std/atomics/atomics.types.operations/atomics.types.operations.req/ctor.pass.cpp
@@ -22,6 +22,8 @@
 #include <type_traits>
 #include <cassert>
 
+#include "atomic_helpers.h"
+
 struct UserType {
     int i;
 
@@ -55,6 +57,6 @@
 
 int main()
 {
-    test<int>();
     test<UserType>();
+    TEST_EACH_ATOMIC_INTEGRAL();
 }
Index: test/support/test_macros.h
===================================================================
--- test/support/test_macros.h
+++ test/support/test_macros.h
@@ -56,8 +56,10 @@
 #endif
 
 #if TEST_STD_VER >= 11
+#define TEST_CONSTEXPR constexpr
 #define TEST_NOEXCEPT noexcept
 #else
+#define TEST_CONSTEXPR
 #define TEST_NOEXCEPT
 #endif