1 files changed, 7 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-41726.rs b/tests/ui/issues/issue-41726.rs
new file mode 100644
index 00000000000..39631912c00
--- /dev/null
+++ b/tests/ui/issues/issue-41726.rs
@@ -0,0 +1,7 @@
+use std::collections::HashMap;
+fn main() {
+    let things: HashMap<String, Vec<String>> = HashMap::new();
+    for src in things.keys() {
+        things[src.as_str()].sort(); //~ ERROR cannot borrow data in an index of
+    }
+}