1 files changed, 16 insertions, 0 deletions
diff --git a/test/typeparam/stringerimp.dir/a.go b/test/typeparam/stringerimp.dir/a.go
new file mode 100644
index 0000000000..3f70937ff5
--- /dev/null
+++ b/test/typeparam/stringerimp.dir/a.go
@@ -0,0 +1,16 @@
+// 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 a
+
+type Stringer interface {
+	String() string
+}
+
+func Stringify[T Stringer](s []T) (ret []string) {
+	for _, v := range s {
+		ret = append(ret, v.String())
+	}
+	return ret
+}