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-rw-r--r--src/test/ui/issues/issue-41880.rs29
1 files changed, 29 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-41880.rs b/src/test/ui/issues/issue-41880.rs
new file mode 100644
index 000000000..977c43b71
--- /dev/null
+++ b/src/test/ui/issues/issue-41880.rs
@@ -0,0 +1,29 @@
+fn iterate<T, F>(initial: T, f: F) -> Iterate<T, F> {
+ Iterate {
+ state: initial,
+ f: f,
+ }
+}
+
+pub struct Iterate<T, F> {
+ state: T,
+ f: F
+}
+
+impl<T: Clone, F> Iterator for Iterate<T, F> where F: Fn(&T) -> T {
+ type Item = T;
+
+ #[inline]
+ fn next(&mut self) -> Option<Self::Item> {
+ self.state = (self.f)(&self.state);
+ Some(self.state.clone())
+ }
+ #[inline]
+ fn size_hint(&self) -> (usize, Option<usize>) { (usize::MAX, None) }
+}
+
+fn main() {
+ let a = iterate(0, |x| x+1);
+ println!("{:?}", a.iter().take(10).collect::<Vec<usize>>());
+ //~^ ERROR no method named `iter` found
+}