--- /dev/null
+// run-rustfix
+
+#![warn(clippy::from_iter_instead_of_collect)]
+#![allow(unused_imports)]
+
+use std::collections::{BTreeMap, BTreeSet, HashMap, VecDeque};
+use std::iter::FromIterator;
+
+fn main() {
+ let iter_expr = std::iter::repeat(5).take(5);
+ let _ = iter_expr.collect::<Vec<_>>();
+
+ let _ = vec![5, 5, 5, 5].iter().enumerate().collect::<HashMap<usize, &i8>>();
+
+ Vec::from_iter(vec![42u32]);
+
+ let a = vec![0, 1, 2];
+ assert_eq!(a, (0..3).collect::<Vec<_>>());
+ assert_eq!(a, (0..3).collect::<Vec<i32>>());
+
+ let mut b = (0..3).collect::<VecDeque<_>>();
+ b.push_back(4);
+
+ let mut b = (0..3).collect::<VecDeque<i32>>();
+ b.push_back(4);
+
+ {
+ use std::collections;
+ let mut b = (0..3).collect::<collections::VecDeque<i32>>();
+ b.push_back(4);
+ }
+
+ let values = [(0, 'a'), (1, 'b'), (2, 'c'), (3, 'd')];
+ let bm = values.iter().cloned().collect::<BTreeMap<_, _>>();
+ let mut bar = bm.range(0..2).collect::<BTreeMap<_, _>>();
+ bar.insert(&4, &'e');
+
+ let mut bts = (0..3).collect::<BTreeSet<_>>();
+ bts.insert(2);
+ {
+ use std::collections;
+ let _ = (0..3).collect::<collections::BTreeSet<_>>();
+ let _ = (0..3).collect::<collections::BTreeSet<u32>>();
+ }
+
+ for _i in [1, 2, 3].iter().collect::<Vec<_>>() {}
+ for _i in [1, 2, 3].iter().collect::<Vec<&i32>>() {}
+}