Initial commit: Go 1.23 release state

test/typeparam/issue47684c.go

@@ -0,0 +1,19 @@
+// 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 f[G any]() func()func()int {
+	return func() func()int {
+		return func() int {
+			return 0
+		}
+	}
+}
+
+func main() {
+	f[int]()()()
+}