// errorcheck -0 -race

//go:build (linux && amd64) || (linux && ppc64le) || (darwin && amd64) || (freebsd && amd64) || (netbsd && amd64) || (windows && amd64)

// Copyright 2017 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.

// Issue 13265: nil pointer deref.

package p

func f() {
    var c chan chan chan int
    for ; ; <-<-<-c {
    }

// license that can be found in the LICENSE file.

//go:build race

#include "go_asm.h"
#include "funcdata.h"
#include "textflag.h"

// The following thunks allow calling the gcc-compiled race runtime directly
// from Go code without going all the way through cgo.
// First, it's much faster (up to 50% speedup for real Go programs).
// Second, it eliminates race-related special cases from cgocall and scheduler.

// license that can be found in the LICENSE file.

package main

// Setting an environment variable in a cgo program changes the C
// environment. Test that this does not confuse the race detector.

/*
#cgo CFLAGS: -fsanitize=thread
#cgo LDFLAGS: -fsanitize=thread
*/
import "C"

import (
	"fmt"
	"os"
	"sync"
	"time"
)

func main() {
	var wg sync.WaitGroup

// compile

// Copyright 2014 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.

// Issue 8028. Used to fail in -race mode with "non-orig name" error.

package p

var (
	t2 = T{F, "s1"}
	t1 = T{F, "s2"}

	tt = [...]T{t1, t2}
)

type I interface{}

type T struct {
	F func() I
	S string
}

type E struct{}

// run

//go:build js

// Copyright 2020 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 race condition between timers and wasm calls that led to memory corruption.

package main

import (
	"os"
	"syscall/js"
	"time"
)

func main() {
	ch1 := make(chan struct{})

	go func() {
		for {

	}

	// This test requires "go test -race -cover", meaning that we need
	// go build, go run, and "-race" support.
	testenv.MustHaveGoRun(t)
	if !platform.RaceDetectorSupported(runtime.GOOS, runtime.GOARCH) ||
		!testenv.HasCGO() {
		t.Skip("skipped due to lack of race detector support / CGO")
	}

	// This will run a program with -cover and -race where we have a

// 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.

//go:build race

package race_test

import (
	"sync"
	"testing"
	"time"
)

func TestTimers(t *testing.T) {
	const goroutines = 8
	var wg sync.WaitGroup
	wg.Add(goroutines)
	var mu sync.Mutex
	for i := 0; i < goroutines; i++ {
		go func() {
			defer wg.Done()

	expectedSource := "[namespace-lock_test.go:35:TestGetSource()]"
	if gotSource != expectedSource {
		t.Errorf("expected : %s, got : %s", expectedSource, gotSource)
	}
}

// Test lock race
func TestNSLockRace(t *testing.T) {
	t.Skip("long test skip it")

	ctx := context.Background()

	for i := 0; i < 10000; i++ {
		nsLk := newNSLock(false)

		// lk1; ref=1

	func() {
		// Create a region in the execution trace. Set and clear goroutine
		// labels fully within that region, so we know that any CPU profile
		// sample with the label must also be eligible for inclusion in the
		// execution trace.
		ctx := context.Background()
		defer trace.StartRegion(ctx, "cpuHogger").End()
		pprof.Do(ctx, pprof.Labels("tracing", "on"), func(ctx context.Context) {
			cpuHogger(cpuHog1, &salt1, dur)
		})

// run -race

//go:build cgo && linux && amd64

// Copyright 2020 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.

package main

import (
	"fmt"
	"testing"
	"unsafe"
)

var buf [2]byte
var x unsafe.Pointer = unsafe.Pointer(&buf[0])

func main() {
	n := testing.AllocsPerRun(1000, func() {
		x = unsafe.Pointer(uintptr(x) + 1)