--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libgo/misc/cgo/test/checkconst.go	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,33 @@
+// Copyright 2016 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 a constant in conjunction with pointer checking.
+
+package cgotest
+
+/*
+#include <stdlib.h>
+
+#define CheckConstVal 0
+
+typedef struct {
+	int *p;
+} CheckConstStruct;
+
+static void CheckConstFunc(CheckConstStruct *p, int e) {
+}
+*/
+import "C"
+
+import (
+	"testing"
+	"unsafe"
+)
+
+func testCheckConst(t *testing.T) {
+	// The test is that this compiles successfully.
+	p := C.malloc(C.size_t(unsafe.Sizeof(C.int(0))))
+	defer C.free(p)
+	C.CheckConstFunc(&C.CheckConstStruct{(*C.int)(p)}, C.CheckConstVal)
+}