#include <ext/atomicity.h>
-_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
_Atomic_word
__exchange_and_add(volatile _Atomic_word* __mem, int __val) throw ()
__atomic_add(volatile _Atomic_word* __mem, int __val) throw ()
{ __exchange_and_add(__mem, __val); }
-_GLIBCXX_END_NAMESPACE
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace