diff options
Diffstat (limited to 'tests/ui/traits/next-solver/projection/param-env-trait-candidate-1.rs')
-rw-r--r-- | tests/ui/traits/next-solver/projection/param-env-trait-candidate-1.rs | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tests/ui/traits/next-solver/projection/param-env-trait-candidate-1.rs b/tests/ui/traits/next-solver/projection/param-env-trait-candidate-1.rs new file mode 100644 index 000000000..b337c0673 --- /dev/null +++ b/tests/ui/traits/next-solver/projection/param-env-trait-candidate-1.rs @@ -0,0 +1,14 @@ +// check-pass +// compile-flags: -Znext-solver + +// See https://github.com/rust-lang/trait-system-refactor-initiative/issues/1 +// a minimization of a pattern in core. +fn next<T: Iterator<Item = U>, U>(t: &mut T) -> Option<U> { + t.next() +} + +fn foo<T: Iterator>(t: &mut T) { + let _: Option<T::Item> = next(t); +} + +fn main() {} |