diff --git a/tests/source/issue-4646.rs b/tests/source/issue-4646.rs
new file mode 100644
index 00000000000..ee0f23220c9
--- /dev/null
+++ b/tests/source/issue-4646.rs
@@ -0,0 +1,20 @@
+trait Foo {
+    fn bar(&self)
+    // where
+    //     Self: Bar
+    ;
+}
+
+trait Foo {
+    fn bar(&self)
+    // where
+    //     Self: Bar
+;
+}
+
+trait Foo {
+    fn bar(&self)
+    // where
+    //     Self: Bar
+        ;
+}
diff --git a/tests/target/issue-4646.rs b/tests/target/issue-4646.rs
new file mode 100644
index 00000000000..4e149399f06
--- /dev/null
+++ b/tests/target/issue-4646.rs
@@ -0,0 +1,20 @@
+trait Foo {
+    fn bar(&self)
+    // where
+    //     Self: Bar
+    ;
+}
+
+trait Foo {
+    fn bar(&self)
+    // where
+    //     Self: Bar
+    ;
+}
+
+trait Foo {
+    fn bar(&self)
+    // where
+    //     Self: Bar
+    ;
+}