#if ((defined(__x86_64__) && defined(AO_GCC_ATOMIC_TEST_AND_SET)) \
|| defined(__aarch64__)) && !defined(__ILP32__)
/* x86-64: __m128 is not applicable to atomic intrinsics. */
- typedef unsigned __int128 double_ptr_storage;
+# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7) \
+ || __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 6)
+# pragma GCC diagnostic push
+ /* Suppress warning about __int128 type. */
+# if defined(__clang__)
+# pragma GCC diagnostic ignored "-Wpedantic"
+# else
+ /* GCC before ~4.8 does not accept "-Wpedanic" quietly. */
+# pragma GCC diagnostic ignored "-pedantic"
+# endif
+ typedef unsigned __int128 double_ptr_storage;
+# pragma GCC diagnostic pop
+# else /* pragma diagnostic is not supported */
+ typedef unsigned __int128 double_ptr_storage;
+# endif
#elif ((defined(__x86_64__) && __GNUC__ >= 4) || defined(_WIN64)) \
&& !defined(__ILP32__)
/* x86-64 (except for x32): __m128 serves as a placeholder which also */