42ec5c7b32
When encountering an `if` expression with no `else` where the then block has a tail expression, we emit an E0308 type error. We now explain why `()` was expected.
28 lines
1 KiB
Text
28 lines
1 KiB
Text
error[E0308]: mismatched types
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--> $DIR/issue-82612-return-mutable-reference.rs:18:13
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LL | / if index < self.values.len() {
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LL | | let value = unsafe { self.values.get_unchecked_mut(index) };
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LL | | value.get_or_insert_with(func)
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| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `()`, found `&mut V`
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LL | | }
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| |_________- `if` expressions without `else` arms expect their inner expression to be `()`
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= note: expected unit type `()`
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found mutable reference `&mut V`
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help: consider using a semicolon here
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LL | value.get_or_insert_with(func);
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| +
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help: consider using a semicolon here
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LL | };
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| +
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help: you might have meant to return this value
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LL | return value.get_or_insert_with(func);
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| ++++++ +
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0308`.
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