Initial commit: Go 1.23 release state

test/fixedbugs/issue58161.go

@@ -0,0 +1,15 @@
+// compile -d=ssa/check/seed=1
+
+// 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 main
+
+func F[G int]() int {
+	return len(make([]int, copy([]G{}, []G{})))
+}
+
+func main() {
+	F[int]()
+}