diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 03:57:31 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 03:57:31 +0000 |
commit | dc0db358abe19481e475e10c32149b53370f1a1c (patch) | |
tree | ab8ce99c4b255ce46f99ef402c27916055b899ee /tests/ui/rfcs/rfc-2027-object-safe-for-dispatch/downcast-unsafe-trait-objects.rs | |
parent | Releasing progress-linux version 1.71.1+dfsg1-2~progress7.99u1. (diff) | |
download | rustc-dc0db358abe19481e475e10c32149b53370f1a1c.tar.xz rustc-dc0db358abe19481e475e10c32149b53370f1a1c.zip |
Merging upstream version 1.72.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/rfcs/rfc-2027-object-safe-for-dispatch/downcast-unsafe-trait-objects.rs')
-rw-r--r-- | tests/ui/rfcs/rfc-2027-object-safe-for-dispatch/downcast-unsafe-trait-objects.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/rfcs/rfc-2027-object-safe-for-dispatch/downcast-unsafe-trait-objects.rs b/tests/ui/rfcs/rfc-2027-object-safe-for-dispatch/downcast-unsafe-trait-objects.rs new file mode 100644 index 000000000..fa04f4b12 --- /dev/null +++ b/tests/ui/rfcs/rfc-2027-object-safe-for-dispatch/downcast-unsafe-trait-objects.rs @@ -0,0 +1,23 @@ +// Check that we if we get ahold of an object unsafe trait +// object with auto traits and lifetimes, we can downcast it +// +// check-pass + +#![feature(object_safe_for_dispatch)] + +trait Trait: Sized {} + +fn downcast_auto(t: &(dyn Trait + Send)) -> &dyn Trait { + t +} + +fn downcast_lifetime<'a, 'b, 't>(t: &'a (dyn Trait + 't)) + -> &'b (dyn Trait + 't) +where + 'a: 'b, + 't: 'a + 'b, +{ + t +} + +fn main() {} |