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-rw-r--r--tests/ui/suggestions/suggest-mut-method-for-loop-hashmap.rs21
1 files changed, 21 insertions, 0 deletions
diff --git a/tests/ui/suggestions/suggest-mut-method-for-loop-hashmap.rs b/tests/ui/suggestions/suggest-mut-method-for-loop-hashmap.rs
new file mode 100644
index 00000000000..9284410dfa3
--- /dev/null
+++ b/tests/ui/suggestions/suggest-mut-method-for-loop-hashmap.rs
@@ -0,0 +1,21 @@
+// run-rustfix
+// https://github.com/rust-lang/rust/issues/82081
+
+use std::collections::HashMap;
+
+struct Test {
+    v: u32,
+}
+
+fn main() {
+    let mut map = HashMap::new();
+    map.insert("a", Test { v: 0 });
+
+    for (_k, mut v) in map.iter() {
+        //~^ HELP use mutable method
+        //~| NOTE this iterator yields `&` references
+        v.v += 1;
+        //~^ ERROR cannot assign to `v.v`
+        //~| NOTE `v` is a `&` reference
+    }
+}