#if __cplusplus >= 201103L
# ifndef va_copy
-# error va_copy not defined when c++ >= 11
+# error va_copy is not defined when c++ >= 11
# endif
#else
# ifdef va_copy
-# error va_copy not defined when c++ < 11
+# error va_copy is unexpectedly defined when c++ < 11
# endif
#endif
#if __cplusplus >= 201103L
# ifndef va_copy
-# error va_copy not defined when c++ >= 11
+# error va_copy is not defined when c++ >= 11
# endif
#else
# ifdef va_copy
-# error va_copy not defined when c++ < 11
+# error va_copy is unexpectedly defined when c++ < 11
# endif
#endif