1 files changed, 22 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-66706.rs b/tests/ui/issues/issue-66706.rs
new file mode 100644
index 000000000..835fdfae8
--- /dev/null
+++ b/tests/ui/issues/issue-66706.rs
@@ -0,0 +1,22 @@
+fn a() {
+    [0; [|_: _ &_| ()].len()]
+    //~^ ERROR expected `,`, found `&`
+    //~| ERROR type annotations needed
+}
+
+fn b() {
+    [0; [|f @ &ref _| {} ; 0 ].len() ];
+    //~^ ERROR expected identifier, found reserved identifier `_`
+}
+
+fn c() {
+    [0; [|&_: _ &_| {}; 0 ].len()]
+    //~^ ERROR expected `,`, found `&`
+}
+
+fn d() {
+    [0; match [|f @ &ref _| () ] {} ]
+    //~^ ERROR expected identifier, found reserved identifier `_`
+}
+
+fn main() {}