Initial commit: Go 1.23 release state

test/fixedbugs/bug428.go

@@ -0,0 +1,19 @@
+// run
+
+// Copyright 2012 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.
+
+// Test that when the compiler expands append inline it does not
+// overwrite a value before it needs it (issue 3369).
+
+package main
+
+func main() {
+	s := make([]byte, 5, 6)
+	copy(s, "12346")
+	s = append(s[:len(s)-1], '5', s[len(s)-1])
+	if string(s) != "123456" {
+		panic(s)
+	}
+}