1 files changed, 17 insertions, 0 deletions
diff --git a/test/fixedbugs/issue23664.go b/test/fixedbugs/issue23664.go
new file mode 100644
index 0000000..1925ebf
--- /dev/null
+++ b/test/fixedbugs/issue23664.go
@@ -0,0 +1,17 @@
+// errorcheck
+
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Verify error messages for incorrect if/switch headers.
+
+package p
+
+func f() {
+	if f() true { // ERROR "unexpected true, expecting {"
+	}
+	
+	switch f() true { // ERROR "unexpected true, expecting {"
+	}
+}