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: str-layout1.rs
    path of file: ./repos/gccrs/gcc/testsuite/rust/execute/torture
    
    the code of the file until where you have to start completion: // { dg-additional-options "-w" }
// { dg-output "t1sz=5 t2sz=10\r*" }
#![feature(intrinsics)]

#[lang = "s
    
fn main() -> i32 {
    let t1: &str = "TEST1";
    let t2: &str = &"TEST_12345";

    let t1sz = t1.len();
    let t2sz = t2.len();

    unsafe {
        let a = "t1sz=%i t2sz=%i\n";
        let b = a as *const str;
        let c = b as *const i8;

        printf(c, t1sz as i32, t2sz as i32);
    }

    0
}