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#[macro_export]
#[cfg_attr(bootstrap, allow_internal_unstable(type_ascription, underscore_const_names))]
#[cfg_attr(not(bootstrap), allow_internal_unstable(type_ascription))]
macro_rules! static_assert {
($test:expr) => {
#[allow(dead_code)]
const _: () = [()][!($test: bool) as usize];
}
}
#[macro_export]
#[cfg_attr(bootstrap, allow_internal_unstable(underscore_const_names))]
macro_rules! static_assert_size {
($ty:ty, $size:expr) => {
const _: [(); $size] = [(); ::std::mem::size_of::<$ty>()];
}
}