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: strcmp.rs
    path of file: ./repos/lucet/lucet-runtime/lucet-runtime-tests/src
    
    the code of the file until where you have to start completion: #[macro_export]
macro_rules! strcmp_tests {
    ( $( $region_id:ident => $TestRegion:path ),* ) => {
        use libc::c_char;
        use lucet_runtime::vmctx::Vmctx;
        use lucet_runtime::lucet_hostcall;
        #[lucet_hostcall]
        #[no_mangle]
    
    
                fn strcmp_fault_test() {
                    let module = test_module_c("strcmp", "guest.c").expect("compile module");
                    let region = <TestRegion as RegionCreate>::create(10, &Limits::default()).expect("region can be created");
                    let mut inst = region
                        .new_instance(module)
                        .expect("instance can be created");

                    match inst.run("wasm_fault", &[]) {
                        Err(Error::RuntimeFault { .. }) => (),
                        res => panic!("unexpected result: {:?}", res),
                    }
                }