go source for verification 2026-05-22

test/fixedbugs/issue14321.go

@@ -0,0 +1,33 @@
+// 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 that error message reports _ambiguous_ method.
+
+package p
+
+type A struct{
+	H int
+}
+
+func (A) F() {}
+func (A) G() {}
+
+type B struct{
+	G int
+	H int
+}
+
+func (B) F() {}
+
+type C struct {
+	A
+	B
+}
+
+var _ = C.F // ERROR "ambiguous"
+var _ = C.G // ERROR "ambiguous"
+var _ = C.H // ERROR "ambiguous"
+var _ = C.I // ERROR "no method .*I.*|C.I undefined"