1// run -race
2
3//go:build cgo && linux && amd64
4
5// Copyright 2021 The Go Authors. All rights reserved.
6// Use of this source code is governed by a BSD-style
7// license that can be found in the LICENSE file.
8
9// Test that CL 281293 doesn't interfere with race detector
10// instrumentation.
11
12package main
13
14import "fmt"
15
16const N = 2e6
17
18type Big = [N]int
19
20var sink interface{}
21
22func main() {
23	g(0, f(0))
24
25	x1 := f(1)
26	sink = &x1
27	g(1, x1)
28	g(7, f(7))
29	g(1, x1)
30
31	x3 := f(3)
32	sink = &x3
33	g(1, x1)
34	g(3, x3)
35
36	h(f(0), x1, f(2), x3, f(4))
37}
38
39//go:noinline
40func f(k int) (x Big) {
41	for i := range x {
42		x[i] = k*N + i
43	}
44	return
45}
46
47//go:noinline
48func g(k int, x Big) {
49	for i := range x {
50		if x[i] != k*N+i {
51			panic(fmt.Sprintf("x%d[%d] = %d", k, i, x[i]))
52		}
53	}
54}
55
56//go:noinline
57func h(x0, x1, x2, x3, x4 Big) {
58	g(0, x0)
59	g(1, x1)
60	g(2, x2)
61	g(3, x3)
62	g(4, x4)
63}
64