go source for verification 2026-05-22

test/fixedbugs/bug342.go

@@ -0,0 +1,20 @@
+// errorcheck
+
+// Copyright 2011 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.
+
+// Issue 1871.
+
+package p
+
+type a interface {
+	foo(x int) (x int) // ERROR "duplicate argument|redefinition|redeclared"
+}
+
+/*
+Previously:
+
+bug.go:1 x redclared in this block
+    previous declaration at bug.go:1
+*/