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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/traits/trait-upcasting/type-checking-test-4.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/traits/trait-upcasting/type-checking-test-4.rs')
-rw-r--r-- | tests/ui/traits/trait-upcasting/type-checking-test-4.rs | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/tests/ui/traits/trait-upcasting/type-checking-test-4.rs b/tests/ui/traits/trait-upcasting/type-checking-test-4.rs new file mode 100644 index 000000000..f40c48f0d --- /dev/null +++ b/tests/ui/traits/trait-upcasting/type-checking-test-4.rs @@ -0,0 +1,48 @@ +#![feature(trait_upcasting)] + +trait Foo<'a>: Bar<'a, 'a> {} +trait Bar<'a, 'b> { + fn get_b(&self) -> Option<&'a u32> { + None + } +} + +fn test_correct(x: &dyn Foo<'static>) { + let _ = x as &dyn Bar<'static, 'static>; +} + +fn test_wrong1<'a>(x: &dyn Foo<'static>, y: &'a u32) { + let _ = x as &dyn Bar<'static, 'a>; // Error + //~^ ERROR lifetime may not live long enough +} + +fn test_wrong2<'a>(x: &dyn Foo<'static>, y: &'a u32) { + let _ = x as &dyn Bar<'a, 'static>; // Error + //~^ ERROR lifetime may not live long enough +} + +fn test_wrong3<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> { + let y = x as &dyn Bar<'_, '_>; + y.get_b() // ERROR + //~^ ERROR lifetime may not live long enough +} + +fn test_wrong4<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> { + <_ as Bar>::get_b(x) // ERROR + //~^ ERROR lifetime may not live long enough +} + +fn test_wrong5<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> { + <_ as Bar<'_, '_>>::get_b(x) // ERROR + //~^ ERROR lifetime may not live long enough +} + +fn test_wrong6<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> { + let y = x as &dyn Bar<'_, '_>; + y.get_b(); // ERROR + let z = y; + z.get_b() // ERROR + //~^ ERROR lifetime may not live long enough +} + +fn main() {} |