Initial commit: Go 1.23 release state

test/fixedbugs/issue67190.go

@@ -0,0 +1,24 @@
+// run
+
+// Copyright 2024 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() {
+	ch1 := make(chan struct{})
+	var ch2 <-chan struct{} = ch1
+
+	switch ch1 {
+	case ch2:
+	default:
+		panic("bad narrow case")
+	}
+
+	switch ch2 {
+	case ch1:
+	default:
+		panic("bad narrow switch")
+	}
+}