Initial commit: Go 1.23 release state

test/fixedbugs/issue27289.go

@@ -0,0 +1,24 @@
+// run
+
+// Copyright 2018 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.
+
+// Make sure we don't prove that the bounds check failure branch is unreachable.
+
+package main
+
+//go:noinline
+func f(a []int) {
+	_ = a[len(a)-1]
+}
+
+func main() {
+	defer func() {
+		if err := recover(); err != nil {
+			return
+		}
+		panic("f should panic")
+	}()
+	f(nil)
+}