|  | error: incorrect function inside `extern` block | 
|  | --> $DIR/function-definition-in-extern-block-75283.rs:3:8 | 
|  | | | 
|  | LL |   extern "C" { | 
|  | |   ---------- `extern` blocks define existing foreign functions and functions inside of them cannot have a body | 
|  | LL |       fn lol() { | 
|  | |  ________^^^___- | 
|  | | |        | | 
|  | | |        cannot have a body | 
|  | LL | |         println!(""); | 
|  | LL | |     } | 
|  | | |_____- help: remove the invalid body: `;` | 
|  | | | 
|  | = help: you might have meant to write a function accessible through FFI, which can be done by writing `extern fn` outside of the `extern` block | 
|  | = note: for more information, visit https://doc.rust-lang.org/std/keyword.extern.html | 
|  |  | 
|  | error: aborting due to 1 previous error | 
|  |  |