import (
	"internal/runtime/syscall"
	"testing"
)

func TestEpollctlErrorSign(t *testing.T) {
	v := syscall.EpollCtl(-1, 1, -1, &syscall.EpollEvent{})

	const EBADF = 0x09
	if v != EBADF {
		t.Errorf("epollctl = %v, want %v", v, EBADF)
	}

#include <sys/fork.h>
#include <sys/port.h>
#include <semaphore.h>
#include <errno.h>
#include <signal.h>
#include <pthread.h>
#include <netdb.h>
*/
import "C"

const (
	EINTR       = C.EINTR
	EBADF       = C.EBADF
	EFAULT      = C.EFAULT
	EAGAIN      = C.EAGAIN
	EBUSY       = C.EBUSY
	ETIME       = C.ETIME
	ETIMEDOUT   = C.ETIMEDOUT
	EWOULDBLOCK = C.EWOULDBLOCK
	EINPROGRESS = C.EINPROGRESS

	}
	var buf [32]byte
	r := runtime.Read(-1, unsafe.Pointer(&buf[0]), int32(len(buf)))
	if got, want := r, -int32(syscall.EBADF); got != want {
		t.Errorf("read()=%d, want %d", got, want)
	}
	w := runtime.Write(^uintptr(0), unsafe.Pointer(&buf[0]), int32(len(buf)))
	if got, want := w, -int32(syscall.EBADF); got != want {
		t.Errorf("write()=%d, want %d", got, want)
	}
	c := runtime.Close(-1)
	if c != -1 {