From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:13 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/ui/iterators/invalid-iterator-chain.rs | 53 ++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 tests/ui/iterators/invalid-iterator-chain.rs

(limited to 'tests/ui/iterators/invalid-iterator-chain.rs')

diff --git a/tests/ui/iterators/invalid-iterator-chain.rs b/tests/ui/iterators/invalid-iterator-chain.rs
new file mode 100644
index 000000000..ebdf33303
--- /dev/null
+++ b/tests/ui/iterators/invalid-iterator-chain.rs
@@ -0,0 +1,53 @@
+use std::collections::hash_set::Iter;
+use std::collections::HashSet;
+
+fn iter_to_vec<'b, X>(i: Iter<'b, X>) -> Vec<X> {
+    let i = i.map(|x| x.clone());
+    i.collect() //~ ERROR E0277
+}
+
+fn main() {
+    let scores = vec![(0, 0)]
+        .iter()
+        .map(|(a, b)| {
+            a + b;
+        });
+    println!("{}", scores.sum::<i32>()); //~ ERROR E0277
+    println!(
+        "{}",
+        vec![0, 1]
+            .iter()
+            .map(|x| x * 2)
+            .map(|x| x as f64)
+            .map(|x| x as i64)
+            .filter(|x| *x > 0)
+            .map(|x| { x + 1 })
+            .map(|x| { x; })
+            .sum::<i32>(), //~ ERROR E0277
+    );
+    println!(
+        "{}",
+        vec![0, 1]
+            .iter()
+            .map(|x| x * 2)
+            .map(|x| x as f64)
+            .filter(|x| *x > 0.0)
+            .map(|x| { x + 1.0 })
+            .sum::<i32>(), //~ ERROR E0277
+    );
+    println!("{}", vec![0, 1].iter().map(|x| { x; }).sum::<i32>()); //~ ERROR E0277
+    println!("{}", vec![(), ()].iter().sum::<i32>()); //~ ERROR E0277
+    let a = vec![0];
+    let b = a.into_iter();
+    let c = b.map(|x| x + 1);
+    let d = c.filter(|x| *x > 10 );
+    let e = d.map(|x| {
+        x + 1;
+    });
+    let f = e.filter(|_| false);
+    let g: Vec<i32> = f.collect(); //~ ERROR E0277
+
+    let mut s = HashSet::new();
+    s.insert(1u8);
+    println!("{:?}", iter_to_vec(s.iter()));
+}
-- 
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