#![cfg_attr(not(feature = "std"), allow(internal_features))] #![cfg_attr(not(feature = "std"), feature(lang_items, start))] #![cfg_attr(not(feature = "std"), no_std)] #[start] #[cfg(not(feature = "std"))] fn start(_argc: isize, _argv: *const *const u8) -> isize { 0 } #[cfg(feature = "std")] fn main() {} use docsplay::Display; /// this type is pretty swell #[derive(Display)] struct FakeType; static_assertions::assert_impl_all!(FakeType: core::fmt::Display);