go source for verification 2026-05-22

test/fixedbugs/issue52870.go

@@ -0,0 +1,27 @@
+// compile
+
+// Copyright 2022 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 52870: gofrontend gave incorrect error when incorrectly
+// compiling ambiguous promoted method.
+
+package p
+
+type S1 struct {
+	*S2
+}
+
+type S2 struct {
+	T3
+	T4
+}
+
+type T3 int32
+
+func (T3) M() {}
+
+type T4 int32
+
+func (T4) M() {}