1 files changed, 27 insertions, 0 deletions
diff --git a/test/typeparam/issue49421.go b/test/typeparam/issue49421.go
new file mode 100644
index 0000000..65c32af
--- /dev/null
+++ b/test/typeparam/issue49421.go
@@ -0,0 +1,27 @@
+// 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
+
+func main() {
+	var a, b foo
+	bar(a, b)
+}
+
+type foo int
+
+func (a foo) less(b foo) bool {
+	return a < b
+}
+
+type lesser[T any] interface {
+	less(T) bool
+	comparable
+}
+
+func bar[T lesser[T]](a, b T) {
+	a.less(b)
+}