@code{_Static_assert}, are not supported by many platforms.
For example, GCC versions before 4.6.0 do not support @code{_Static_assert},
and G++ versions through at least 4.6.0 do not support @code{static_assert}.
@code{_Static_assert}, are not supported by many platforms.
For example, GCC versions before 4.6.0 do not support @code{_Static_assert},
and G++ versions through at least 4.6.0 do not support @code{static_assert}.