libstdc++: Add include guard to simd-internal header

Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
libstdc++-v3/ChangeLog:

	* include/experimental/bits/numeric_traits.h: Add include guard.

(cherry picked from commit 3cfe94ad28102618c14a91c0a83d9e5cc7df69d7)

diff --git a/libstdc++-v3/include/experimental/bits/numeric_traits.h b/libstdc++-v3/include/experimental/bits/numeric_traits.h
index 84e97da7d6b31e0f3fb441a0f66c49d449de7137..85f189e276f9657993f51d4f76a0996393367c06 100644 (file)
--- a/libstdc++-v3/include/experimental/bits/numeric_traits.h
+++ b/libstdc++-v3/include/experimental/bits/numeric_traits.h
@@ -22,6 +22,9 @@
 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 // <http://www.gnu.org/licenses/>.
 
+#ifndef _GLIBCXX_EXPERIMENTAL_BITS_NUMERIC_TRAITS_H
+#define _GLIBCXX_EXPERIMENTAL_BITS_NUMERIC_TRAITS_H
+
 #include <type_traits>
 
 namespace std {
@@ -565,3 +568,4 @@ template <>
 #endif // __FINITE_MATH_ONLY__
 
 } // namespace std
+#endif  // _GLIBCXX_EXPERIMENTAL_BITS_NUMERIC_TRAITS_H