error[E0317]: `if` may be missing an `else` clause --> $DIR/issue-66387-if-without-else.rs:3:5 | LL | / if true { LL | | return 0; LL | | } | |_____^ expected `()`, found `i32` | = note: `if` expressions without `else` evaluate to `()` = help: consider adding an `else` block that evaluates to the expected type error: aborting due to previous error For more information about this error, try `rustc --explain E0317`.