Update to go1.24.1

test/fixedbugs/issue71680.go

@@ -0,0 +1,28 @@
+// compile
+
+// Copyright 2025 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 p
+
+type Parser struct{}
+type Node struct{}
+
+type parserState func(p *Parser) parserState
+
+func parserStateData(root *Node) parserState {
+	return func(p *Parser) parserState {
+		return parserStateOpenMap(root)(p)
+	}
+}
+
+func parserStateOpenMap(root *Node) parserState {
+	return func(p *Parser) parserState {
+		switch {
+		case p != nil:
+			return parserStateData(root)(p)
+		}
+		return parserStateOpenMap(root)(p)
+	}
+}