Error code E0094
An invalid number of generic parameters was passed to an intrinsic function.
Erroneous code example:
#![allow(unused)] #![feature(intrinsics, rustc_attrs)] #![allow(internal_features)] fn main() { extern "rust-intrinsic" { #[rustc_safe_intrinsic] fn size_of<T, U>() -> usize; // error: intrinsic has wrong number // of type parameters } }
Please check that you provided the right number of type parameters and verify with the function declaration in the Rust source code. Example:
#![allow(unused)] #![feature(intrinsics, rustc_attrs)] #![allow(internal_features)] fn main() { extern "rust-intrinsic" { #[rustc_safe_intrinsic] fn size_of<T>() -> usize; // ok! } }