error[E0308]: mismatched types --> $DIR/liveness-forgot-ret.rs:3:19 | LL | fn f(a: isize) -> isize { if god_exists(a) { return 5; }; } | - ^^^^^ expected `isize`, found `()` | | | implicitly returns `()` as its body has no tail or `return` expression | help: consider returning the local binding `a` | LL | fn f(a: isize) -> isize { if god_exists(a) { return 5; }; a } | + error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0308`.