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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/object-lifetime/object-lifetime-default-inferred.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/object-lifetime/object-lifetime-default-inferred.rs')
-rw-r--r-- | tests/ui/object-lifetime/object-lifetime-default-inferred.rs | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/tests/ui/object-lifetime/object-lifetime-default-inferred.rs b/tests/ui/object-lifetime/object-lifetime-default-inferred.rs new file mode 100644 index 000000000..8a1156b8f --- /dev/null +++ b/tests/ui/object-lifetime/object-lifetime-default-inferred.rs @@ -0,0 +1,35 @@ +// run-pass +// Test that even with prior inferred parameters, object lifetimes of objects after are still +// valid. + +// pretty-expanded FIXME #23616 + +#![allow(dead_code)] +#![feature(generic_arg_infer)] + +trait Test { + fn foo(&self) { } +} + +struct Foo; +impl Test for Foo {} + +struct SomeStruct<'a> { + t: &'a dyn Test, + u: &'a (dyn Test+'a), +} + +fn a<'a, const N: usize>(_: [u8; N], t: &'a (dyn Test+'a), mut ss: SomeStruct<'a>) { + ss.t = t; +} + +fn b<'a, T>(_: T, t: &'a (dyn Test+'a), mut ss: SomeStruct<'a>) { + ss.u = t; +} + +fn main() { + // Inside a function body, we can just infer both + // lifetimes, to allow &'tmp (Display+'static). + a::<_>([], &Foo as &dyn Test, SomeStruct{t:&Foo,u:&Foo}); + b::<_>(0u8, &Foo as &dyn Test, SomeStruct{t:&Foo,u:&Foo}); +} |