You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: probestack.rs
    path of file: ./repos/wasmer/lib/vm/src
    
    the code of the file until where you have to start completion: // This file contains code from external sou
    
        extern "C" fn empty_probestack() {}
        /// A default probestack for other architectures
        pub const PROBESTACK: unsafe extern "C" fn() = empty_probestack;
    } else {
        extern "C" {
            pub fn __rust_probestack();
        }
        /// The probestack based on the Rust probestack
        pub static PROBESTACK: unsafe extern "C" fn() = __rust_probestack;
    }