mirror of https://github.com/rust-lang/rust
48 lines
1.1 KiB
Rust
48 lines
1.1 KiB
Rust
// > Suggest returning tail expressions that match return type
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// >
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// > Some newcomers are confused by the behavior of tail expressions,
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// > interpreting that "leaving out the `;` makes it the return value".
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// > To help them go in the right direction, suggest using return instead
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// > when applicable.
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// (original commit description for this test)
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//
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// This test was amended to also serve as a regression test for #92308, where
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// this suggestion would not trigger with async functions.
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//
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//@ edition:2018
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fn main() {
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}
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fn foo(x: bool) -> Result<f64, i32> {
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if x {
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Err(42) //~ ERROR mismatched types
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//| HELP you might have meant to return this value
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}
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Ok(42.0)
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}
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async fn bar(x: bool) -> Result<f64, i32> {
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if x {
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Err(42) //~ ERROR mismatched types
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//| HELP you might have meant to return this value
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}
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Ok(42.0)
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}
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trait Identity {
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type Out;
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}
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impl<T> Identity for T {
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type Out = T;
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}
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async fn foo2() -> i32 {
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if true {
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1i32 //~ ERROR mismatched types
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//| HELP you might have meant to return this value
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}
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0
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}
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