go source for verification 2026-05-22

test/fixedbugs/issue22921.go

@@ -0,0 +1,18 @@
+// errorcheck -d=panic
+
+// Copyright 2020 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.
+
+package main
+
+import "bytes"
+
+type _ struct{ bytes.nonexist } // ERROR "unexported|undefined"
+
+type _ interface{ bytes.nonexist } // ERROR "unexported|undefined|expected signature or type name"
+
+func main() {
+	var _ bytes.Buffer
+	var _ bytes.buffer // ERROR "unexported|undefined"
+}