Macro rustc::CloneTypeFoldableImpls[][src]

macro_rules! CloneTypeFoldableImpls {
    (for <$tcx:lifetime> { $($ty:ty,)+ }) => { ... };
    ($($ty:ty,)+) => { ... };
}
🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Used for types that are Copy and which do not care arena allocated data (i.e., don't need to be folded).