Initial commit: Go 1.23 release state

test/fixedbugs/issue59174.go

@@ -0,0 +1,12 @@
+// compile
+
+// Copyright 2023 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
+
+func p() {
+	s := make([]int, copy([]byte{' '}, "")-1)
+	_ = append([]int{}, make([]int, len(s))...)
+}