diff options
Diffstat (limited to 'tests')
3 files changed, 21 insertions, 6 deletions
diff --git a/tests/ui/lifetimes/temporary-lifetime-extension.edition2021.run.stdout b/tests/ui/lifetimes/temporary-lifetime-extension.edition2021.run.stdout new file mode 100644 index 00000000000..86437221589 --- /dev/null +++ b/tests/ui/lifetimes/temporary-lifetime-extension.edition2021.run.stdout @@ -0,0 +1 @@ +("Hello", 1) [(("Hello", 1),)] "Hello" "Hello" "Hello" ("Hello", 1) ("Hello", 1) ("Hello", 1) diff --git a/tests/ui/lifetimes/temporary-lifetime-extension.edition2024.run.stdout b/tests/ui/lifetimes/temporary-lifetime-extension.edition2024.run.stdout new file mode 100644 index 00000000000..86437221589 --- /dev/null +++ b/tests/ui/lifetimes/temporary-lifetime-extension.edition2024.run.stdout @@ -0,0 +1 @@ +("Hello", 1) [(("Hello", 1),)] "Hello" "Hello" "Hello" ("Hello", 1) ("Hello", 1) ("Hello", 1) diff --git a/tests/ui/lifetimes/temporary-lifetime-extension.rs b/tests/ui/lifetimes/temporary-lifetime-extension.rs index 1ecef2f3d04..d03027cf4a3 100644 --- a/tests/ui/lifetimes/temporary-lifetime-extension.rs +++ b/tests/ui/lifetimes/temporary-lifetime-extension.rs @@ -1,4 +1,21 @@ -//@ check-pass +// This is a test for the new temporary lifetime behaviour as implemented for RFC 3606. +// In essence, with #3606 we can write the following variable initialisation without +// a borrow checking error because the temporary lifetime is automatically extended. +// ```rust +// let x = if condition() { +// &something() +// } else { +// &something_else() +// }; +// ``` +// More details can be found in https://github.com/rust-lang/rfcs/pull/3606 + +//@ run-pass +//@ check-run-results +//@ revisions: edition2021 edition2024 +//@ [edition2021] edition: 2021 +//@ [edition2024] edition: 2024 +//@ [edition2024] compile-flags: -Z unstable-options fn temp() -> (String, i32) { (String::from("Hello"), 1) @@ -13,11 +30,7 @@ fn main() { let _ = 123; &(*temp().0)[..] }; - let f = if true { - &temp() - } else { - &temp() - }; + let f = if true { &temp() } else { &temp() }; let g = match true { true => &temp(), false => { |