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error[E0308]: mismatched types
--> $DIR/issue-98982.rs:2:5
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LL | fn foo() -> i32 {
| --- expected `i32` because of return type
LL | / for i in 0..0 {
LL | | return i;
LL | | }
| |_____^ expected `i32`, found `()`
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note: the function expects a value to always be returned, but loops might run zero times
--> $DIR/issue-98982.rs:2:5
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LL | for i in 0..0 {
| ^^^^^^^^^^^^^ this might have zero elements to iterate on
LL | return i;
| -------- if the loop doesn't execute, this value would never get returned
help: return a value for the case when the loop has zero elements to iterate on
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LL ~ }
LL ~ /* `i32` value */
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help: otherwise consider changing the return type to account for that possibility
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LL ~ fn foo() -> Option<i32> {
LL | for i in 0..0 {
LL ~ return Some(i);
LL ~ }
LL ~ None
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error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0308`.
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