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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/builtin-superkinds/builtin-superkinds-capabilities-transitive.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/builtin-superkinds/builtin-superkinds-capabilities-transitive.rs')
-rw-r--r-- | tests/ui/builtin-superkinds/builtin-superkinds-capabilities-transitive.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/builtin-superkinds/builtin-superkinds-capabilities-transitive.rs b/tests/ui/builtin-superkinds/builtin-superkinds-capabilities-transitive.rs new file mode 100644 index 000000000..1f997d371 --- /dev/null +++ b/tests/ui/builtin-superkinds/builtin-superkinds-capabilities-transitive.rs @@ -0,0 +1,25 @@ +// run-pass +// Tests "transitivity" of super-builtin-kinds on traits. Here, if +// we have a Foo, we know we have a Bar, and if we have a Bar, we +// know we have a Send. So if we have a Foo we should know we have +// a Send. Basically this just makes sure rustc is using +// each_bound_trait_and_supertraits in type_contents correctly. + + +use std::sync::mpsc::{channel, Sender}; + +trait Bar : Send { } +trait Foo : Bar { } + +impl <T: Send> Foo for T { } +impl <T: Send> Bar for T { } + +fn foo<T: Foo + 'static>(val: T, chan: Sender<T>) { + chan.send(val).unwrap(); +} + +pub fn main() { + let (tx, rx) = channel(); + foo(31337, tx); + assert_eq!(rx.recv().unwrap(), 31337); +} |