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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
commit | 64d98f8ee037282c35007b64c2649055c56af1db (patch) | |
tree | 5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /tests/ui/associated-types/issue-67684.rs | |
parent | Adding debian version 1.67.1+dfsg1-1. (diff) | |
download | rustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz rustc-64d98f8ee037282c35007b64c2649055c56af1db.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/associated-types/issue-67684.rs')
-rw-r--r-- | tests/ui/associated-types/issue-67684.rs | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/tests/ui/associated-types/issue-67684.rs b/tests/ui/associated-types/issue-67684.rs new file mode 100644 index 000000000..49efe8a1b --- /dev/null +++ b/tests/ui/associated-types/issue-67684.rs @@ -0,0 +1,62 @@ +// check-pass + +#![allow(dead_code)] + +trait ParseError { + type StreamError; +} + +impl<T> ParseError for T { + type StreamError = (); +} + +trait Stream { + type Item; + type Error: ParseError; +} + +trait Parser +where + <Self as Parser>::PartialState: Default, +{ + type PartialState; + fn parse_mode(_: &Self, _: Self::PartialState) { + loop {} + } +} + +impl Stream for () { + type Item = (); + type Error = (); +} + +impl Parser for () { + type PartialState = (); +} + +struct AndThen<A, B>(core::marker::PhantomData<(A, B)>); + +impl<A, B> Parser for AndThen<A, B> +where + A: Stream, + B: Into<<A::Error as ParseError>::StreamError>, +{ + type PartialState = (); +} + +fn expr<A>() -> impl Parser +where + A: Stream<Error = <A as Stream>::Item>, +{ + AndThen::<A, ()>(core::marker::PhantomData) +} + +fn parse_mode_impl<A>() +where + <A as Stream>::Error: ParseError, + A: Stream<Error = <A as Stream>::Item>, +{ + Parser::parse_mode(&expr::<A>(), Default::default()) +} + +fn main() {} |