1 An unknown intrinsic function was declared.
3 Erroneous code example:
6 #![feature(intrinsics)]
8 extern "rust-intrinsic" {
9 fn foo(); // error: unrecognized intrinsic function: `foo`
19 Please check you didn't make a mistake in the function's name. All intrinsic
20 functions are defined in `compiler/rustc_codegen_llvm/src/intrinsic.rs` and in
21 `library/core/src/intrinsics.rs` in the Rust source code. Example:
24 #![feature(intrinsics)]
26 extern "rust-intrinsic" {
27 fn atomic_fence_seqcst(); // ok!
32 atomic_fence_seqcst();