Function syntax_ext::proc_macro_registrar::mk_registrar[][src]

fn mk_registrar(
    cx: &mut ExtCtxt,
    custom_derives: &[ProcMacroDerive],
    custom_attrs: &[ProcMacroDef],
    custom_macros: &[ProcMacroDef]
) -> P<Item>
🔬 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?