1 files changed, 9 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-19811-escape-unicode.rs b/tests/ui/issues/issue-19811-escape-unicode.rs
new file mode 100644
index 000000000..a2c50bc02
--- /dev/null
+++ b/tests/ui/issues/issue-19811-escape-unicode.rs
@@ -0,0 +1,9 @@
+// run-pass
+
+fn main() {
+    let mut escaped = String::from("");
+    for c in '\u{10401}'.escape_unicode() {
+        escaped.push(c);
+    }
+    assert_eq!("\\u{10401}", escaped);
+}