1 error[E0308]: mismatched types
2 --> $DIR/tail-typeck.rs:3:26
4 LL | fn f() -> isize { return g(); }
5 | ----- ^^^ expected isize, found usize
7 | expected `isize` because of return type
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0308`.