1 files changed, 30 insertions, 0 deletions
diff --git a/test/typeparam/issue48047.go b/test/typeparam/issue48047.go
new file mode 100644
index 0000000..06a2ebd
--- /dev/null
+++ b/test/typeparam/issue48047.go
@@ -0,0 +1,30 @@
+// run
+
+// Copyright 2021 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
+
+type A[T any] struct {
+	field B[T]
+}
+
+type B[T any] interface {
+	Work(T)
+}
+
+func (a *A[T]) Work(t T) {
+	a.field.Work(t)
+}
+
+type BImpl struct{}
+
+func (b BImpl) Work(s string) {}
+
+func main() {
+	a := &A[string]{
+		field: BImpl{},
+	}
+	a.Work("")
+}