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: issue-407-2.rs
    path of file: ./repos/gccrs/gcc/testsuite/rust/compile
    
    the code of the file until where you have to start completion: // #407
pub fn loopy()  {
    let mut a = 1;
    loop {
        // { dg-error {failed to parse statement or expression in block expression} "" { target *-*-* } .-1 }
        if a
    
pub fn loopy()  {
    let mut a = 1;
    loop {
        // { dg-error {failed to parse statement or expression in block expression} "" { target *-*-* } .-1 }
        if a < 40 {
            // { dg-error {failed to parse statement or expression in block expression} "" { target *-*-* } .-1 }
            a + = 1; // { dg-error "found unexpected token '=' in null denotation" }
            // { dg-error {failed to parse statement or expression in block expression} "" { target *-*-* } .-1 }
            // { dg-error {failed to parse if body block expression in if expression} "" { target *-*-* } .-2 }
            // { dg-error {could not parse loop body in \(infinite\) loop expression} "" { target *-*-* } .-3 }
            // { dg-error {unrecognised token 'integer literal' for start of item} "" { target *-*-* } .-4 }
            // { dg-error {failed to parse item in crate} "" { target *-*-* } .-5 }
        } else {
            break;
        }
    }
}