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

//go:build race

// This program is used to verify the race detector
// by running the tests and parsing their output.
// It does not check stack correctness, completeness or anything else:
// it merely verifies that if a test is expected to be racy
// then the race is detected.
package race_test

import (
	"bufio"
	"bytes"
	"fmt"

		if i%5 == v {
			break
		}
		asum.Add(x) // don't race on asum
		runtime.Gosched()
	}
	return 100 + asum.Load()
}

// TestRaceRangeFuncIterator races because x%5 can be equal to 4,
// therefore foo can early exit.
func TestRaceRangeFuncIterator(t *testing.T) {
	x := foo(4)
	t.Logf("foo(4)=%d", x)
}

// TestNoRaceRangeFuncIterator does not race because x%5 is never 5,

func (rw *RWMutex) TryLock() bool {
	if race.Enabled {
		_ = rw.w.state
		race.Disable()
	}
	if !rw.w.TryLock() {
		if race.Enabled {
			race.Enable()
		}
		return false
	}
	if !rw.readerCount.CompareAndSwap(0, -rwmutexMaxReaders) {
		rw.w.Unlock()
		if race.Enabled {
			race.Enable()
		}
		return false
	}
	if race.Enabled {
		race.Enable()

Klaus Post <******@****.***> 1717429554 -0700

the GOMAXPROCS limit. This package's [GOMAXPROCS] function queries and changes
the limit.

The GORACE variable configures the race detector, for programs built using -race.
See the [Race Detector article] for details.

The GOTRACEBACK variable controls the amount of output generated when a Go
program fails due to an unrecovered panic or an unexpected runtime condition.

		done <- true
	}()
	x = <-c2 // ... write to x here
	<-done
}

func TestNoRaceChanReadWriteAsync(t *testing.T) {
	done := make(chan bool)
	c1 := make(chan int, 10)
	x := 0
	go func() {
		c1 <- x // read of x does not race with...
		done <- true
	}()
	x = <-c1 // ... write to x here
	<-done
}

func TestNoRaceProducerConsumerUnbuffered(t *testing.T) {
	type Task struct {

// TODO: This test could be implemented on all (most?) UNIXes if we
// added syscall.Tgkill more widely.

// We skip all of these tests under race mode because our test thread
// spends all of its time in the race runtime, which isn't a safe
// point.

//go:build (amd64 || arm64 || ppc64le) && linux && !race

package runtime_test

import (
	"fmt"
	"internal/abi"
	"math"
	"os"
	"regexp"
	"runtime"
	"runtime/debug"

	}
	*y = accum
}

var (
	salt1 = 0
)

// The actual CPU hogging function.
// Must not call other functions nor access heap/globals in the loop,
// otherwise under race detector the samples will be in the race runtime.
func cpuHog1(x int) int {
	return cpuHog0(x, 1e5)
}

func cpuHog0(x, n int) int {
	foo := x
	for i := 0; i < n; i++ {
		if i%1000 == 0 {

			// much activity, or the map gets big and races to insert on
			// the same node are much less likely.
			if newNode == nil {
				newNode = tab.newTraceMapNode(data, size, hash, tab.seq.Add(1))
			}
			if m.CompareAndSwapNoWB(nil, unsafe.Pointer(newNode)) {
				return newNode.id, true
			}
			// Reload n. Because pointers are only stored once,
			// we must have lost the race, and therefore n is not nil
			// anymore.

	if err != nil {
		t.Fatal(err)
	}
	srv := httptest.NewServer(s)

	// To check for data races in the handler, run the root handler to produce an
	// overview of the script status at an arbitrary point during the test.
	// (We ignore the output because the expected failure mode is a friendly stack
	// dump from the race detector.)
	t.Run("overview", func(t *testing.T) {
		t.Parallel()