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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/impl-trait/issues/issue-70877.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/impl-trait/issues/issue-70877.rs')
-rw-r--r-- | tests/ui/impl-trait/issues/issue-70877.rs | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/issues/issue-70877.rs b/tests/ui/impl-trait/issues/issue-70877.rs new file mode 100644 index 000000000..8169cfafa --- /dev/null +++ b/tests/ui/impl-trait/issues/issue-70877.rs @@ -0,0 +1,36 @@ +#![feature(type_alias_impl_trait)] + +type FooArg<'a> = &'a dyn ToString; +type FooRet = impl std::fmt::Debug; + +type FooItem = Box<dyn Fn(FooArg) -> FooRet>; +type Foo = impl Iterator<Item = FooItem>; + +#[repr(C)] +struct Bar(u8); + +impl Iterator for Bar { + type Item = FooItem; + + fn next(&mut self) -> Option<Self::Item> { + Some(Box::new(quux)) + } +} + +fn quux(st: FooArg) -> FooRet { + Some(st.to_string()) +} + +fn ham() -> Foo { + Bar(1) +} + +fn oof() -> impl std::fmt::Debug { + let mut bar = ham(); + let func = bar.next().unwrap(); + return func(&"oof"); //~ ERROR opaque type's hidden type cannot be another opaque type +} + +fn main() { + let _ = oof(); +} |