error[E0308]: mismatched types
  --> $DIR/issue-11714.rs:11:18
   |
LL |   fn blah() -> i32 { //~ ERROR mismatched types
   |  __________________^
LL | |     1
LL | |
LL | |     ;
   | |     - help: consider removing this semicolon
LL | | }
   | |_^ expected i32, found ()
   |
   = note: expected type `i32`
              found type `()`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0308`.