1 files changed, 26 insertions, 0 deletions
diff --git a/test/typeparam/issue49309.go b/test/typeparam/issue49309.go
new file mode 100644
index 0000000..16c97cd
--- /dev/null
+++ b/test/typeparam/issue49309.go
@@ -0,0 +1,26 @@
+// 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 genfunc[T any](f func(c T)) {
+	var r T
+
+	f(r)
+}
+
+func myfunc(c string) {
+	test2(c)
+}
+
+//go:noinline
+func test2(a interface{}) {
+	_ = a.(string)
+}
+
+func main() {
+	genfunc(myfunc)
+}