go source for verification 2026-05-22

test/typeparam/issue51700.go

@@ -0,0 +1,26 @@
+// run
+
+// 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.
+
+package main
+
+func f[B any](b B) {
+	if b1, ok := any(b).(interface{ m1() }); ok {
+		panic(1)
+		_ = b1.(B)
+	}
+	if b2, ok := any(b).(interface{ m2() }); ok {
+		panic(2)
+		_ = b2.(B)
+	}
+}
+
+type S struct{}
+
+func (S) m3() {}
+
+func main() {
+	f(S{})
+}