Initial commit: Go 1.23 release state

test/defernil.go

@@ -0,0 +1,33 @@
+// run
+
+// Copyright 2019 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.
+
+// Check that deferring a nil function causes a proper
+// panic when the deferred function is invoked (not
+// when the function is deferred).
+// See Issue #8047 and #34926.
+
+package main
+
+var x = 0
+
+func main() {
+	defer func() {
+		err := recover()
+		if err == nil {
+			panic("did not panic")
+		}
+		if x != 1 {
+			panic("FAIL")
+		}
+	}()
+	f()
+}
+
+func f() {
+	var nilf func()
+	defer nilf()
+	x = 1
+}