1 files changed, 23 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-22933-1.rs b/tests/ui/issues/issue-22933-1.rs
new file mode 100644
index 000000000..3c9aa2669
--- /dev/null
+++ b/tests/ui/issues/issue-22933-1.rs
@@ -0,0 +1,23 @@
+// check-pass
+
+struct CNFParser {
+    token: char,
+}
+
+impl CNFParser {
+    fn is_whitespace(c: char) -> bool {
+        c == ' ' || c == '\n'
+    }
+
+    fn consume_whitespace(&mut self) {
+        self.consume_while(&(CNFParser::is_whitespace))
+    }
+
+    fn consume_while(&mut self, p: &dyn Fn(char) -> bool) {
+        while p(self.token) {
+            return
+        }
+    }
+}
+
+fn main() {}