Propagate temporary lifetime extension into if and match expressions

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The Rust Reference

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Propagate temporary lifetime extension into if and match expressions #1548

Open xmh0511 opened 4 months ago

xmh0511 commented 4 months ago

Since 1.79, the temporaries are extended in the following example:

let a = if true {
    ..;
    &temp() // used to error, but now gets lifetime extended
} else {
    ..;
    &temp() // used to error, but now gets lifetime extended
};

The list in extending-based-on-expressions seems to be out-of-date.

ehuss commented 4 months ago

cc https://github.com/rust-lang/rust/pull/121346/. @m-ou-se would you be able to help with that?