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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/inheritance/cast.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/inheritance/cast.rs')
-rw-r--r-- | tests/ui/traits/inheritance/cast.rs | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/tests/ui/traits/inheritance/cast.rs b/tests/ui/traits/inheritance/cast.rs new file mode 100644 index 000000000..9070b9d1f --- /dev/null +++ b/tests/ui/traits/inheritance/cast.rs @@ -0,0 +1,33 @@ +// run-pass +#![allow(dead_code)] +// Testing that supertrait methods can be called on subtrait object types + + +trait Foo { + fn f(&self) -> isize; +} + +trait Bar : Foo { + fn g(&self) -> isize; +} + +struct A { + x: isize +} + +impl Foo for A { + fn f(&self) -> isize { 10 } +} + +impl Bar for A { + fn g(&self) -> isize { 20 } +} + +pub fn main() { + let a = &A { x: 3 }; + let afoo = a as &dyn Foo; + let abar = a as &dyn Bar; + assert_eq!(afoo.f(), 10); + assert_eq!(abar.g(), 20); + assert_eq!(abar.f(), 10); +} |