"bufio"
	"bytes"
	"fmt"
	"internal/testenv"
	"io"
	"io/fs"
	"os"
	"os/exec"
	"os/signal"
	"runtime"
	"strconv"
	"strings"
	"sync"
	"syscall"
	"testing"
	"time"
)

func TestEPIPE(t *testing.T) {
	// This test cannot be run in parallel because of a race similar
	// to the one reported in https://go.dev/issue/22315.
	//
	// Even though the pipe is opened with O_CLOEXEC, if another test forks in