1// run
2
3// Copyright 2019 The Go Authors. All rights reserved.
4// Use of this source code is governed by a BSD-style
5// license that can be found in the LICENSE file.
6
7package main
8
9import "reflect"
10
11func main() {}
12
13func typ(x interface{}) reflect.Type { return reflect.ValueOf(x).Type() }
14
15var byteType = typ((byte)(0))
16var ptrType = typ((*byte)(nil))
17
18// Arrays of pointers. There are two size thresholds.
19// Bit masks are chunked in groups of 120 pointers.
20// Array types with >16384 pointers have a GC program instead of a bitmask.
21var smallPtrType = reflect.ArrayOf(100, ptrType)
22var mediumPtrType = reflect.ArrayOf(1000, ptrType)
23var bigPtrType = reflect.ArrayOf(16385, ptrType)
24
25var x0 = reflect.New(reflect.StructOf([]reflect.StructField{
26	{Name: "F1", Type: byteType},
27	{Name: "F2", Type: bigPtrType},
28}))
29var x1 = reflect.New(reflect.StructOf([]reflect.StructField{
30	{Name: "F1", Type: smallPtrType},
31	{Name: "F2", Type: bigPtrType},
32}))
33var x2 = reflect.New(reflect.StructOf([]reflect.StructField{
34	{Name: "F1", Type: mediumPtrType},
35	{Name: "F2", Type: bigPtrType},
36}))
37var x3 = reflect.New(reflect.StructOf([]reflect.StructField{
38	{Name: "F1", Type: ptrType},
39	{Name: "F2", Type: byteType},
40	{Name: "F3", Type: bigPtrType},
41}))
42var x4 = reflect.New(reflect.StructOf([]reflect.StructField{
43	{Name: "F1", Type: ptrType},
44	{Name: "F2", Type: smallPtrType},
45	{Name: "F3", Type: bigPtrType},
46}))
47var x5 = reflect.New(reflect.StructOf([]reflect.StructField{
48	{Name: "F1", Type: ptrType},
49	{Name: "F2", Type: mediumPtrType},
50	{Name: "F3", Type: bigPtrType},
51}))
52