E0511 - Error codes index
Description: Book listing all Rust error codes

# Error code E0511

Invalid monomorphization of an intrinsic function was used.

Erroneous code example:

    #![feature(intrinsics)]

    extern "rust-intrinsic" {
        fn simd_add<T>(a: T, b: T) -> T;
    }

    fn main() {
        unsafe { simd_add(0, 1); }
        // error: invalid monomorphization of `simd_add` intrinsic
    }

The generic type has to be a SIMD type. Example:

    #![allow(unused)]
    #![feature(repr_simd)]
    #![feature(intrinsics)]

    fn main() {
    #[repr(simd)]
    #[derive(Copy, Clone)]
    struct i32x2(i32, i32);

    extern "rust-intrinsic" {
        fn simd_add<T>(a: T, b: T) -> T;
    }

    unsafe { simd_add(i32x2(0, 0), i32x2(1, 2)); } // ok!
    }