if($ARGV[0] eq "-plan9") {
	$plan9 = 1;
	shift;
}
if($ARGV[0] eq "-darwin") {
	$darwin = 1;
	$libc = 1;
	shift;
}
if($ARGV[0] eq "-openbsd") {
	$openbsd = 1;
	shift;
}
if($ARGV[0] eq "-netbsd") {
	$netbsd = 1;
	shift;
}
if($ARGV[0] eq "-dragonfly") {
	$dragonfly = 1;
	shift;
}
if($ARGV[0] eq "-arm") {
	$arm = 1;
	shift;
}
if($ARGV[0] eq "-libc") {
	$libc = 1;
	shift;
}

		case "darwin", "ios", "dragonfly", "freebsd", "netbsd", "openbsd":
			var st syscall.Stat_t
			err := ignoringEINTR(func() error {
				return syscall.Fstat(fd, &st)
			})
			typ := st.Mode & syscall.S_IFMT
			// Don't try to use kqueue with regular files on *BSDs.
			// On FreeBSD a regular file is always
			// reported as ready for writing.
			// On Dragonfly, NetBSD and OpenBSD the fd is signaled

}

func TestTraceManyStartStop(t *testing.T) {
	testTraceProg(t, "many-start-stop.go", nil)
}

func TestTraceWaitOnPipe(t *testing.T) {
	switch runtime.GOOS {
	case "dragonfly", "freebsd", "linux", "netbsd", "openbsd", "solaris":
		testTraceProg(t, "wait-on-pipe.go", nil)
		return
	}
	t.Skip("no applicable syscall.Pipe on " + runtime.GOOS)
}

func TestTraceIterPull(t *testing.T) {

	}

	if root.buildID != "" {
		// On systems that normally use gold or the GNU linker,
		// use the --build-id option to write a GNU build ID note.
		switch cfg.Goos {
		case "android", "dragonfly", "linux", "netbsd":
			ldflags = append(ldflags, fmt.Sprintf("-Wl,--build-id=0x%x", root.buildID))
		}
	}

	var rLibPath string
	if cfg.Goos == "aix" {
		rLibPath = "-Wl,-blibpath="
	} else {
		rLibPath = "-Wl,-rpath="

		GOINSECURE does not disable checksum database validation. GOPRIVATE or
		GONOSUMDB may be used to achieve that.
	GOOS
		The operating system for which to compile code.
		Examples are linux, darwin, windows, netbsd.
	GOPATH
		Controls where various files are stored. See: 'go help gopath'.
	GOPROXY
		URL of Go module proxy. See https://golang.org/ref/mod#environment-variables

	}
	go cancel()

	if err := c.Wait(); err == nil {
		t.Fatal("expected Wait failure")
	}
}

func TestContextCancel(t *testing.T) {
	if runtime.GOOS == "netbsd" && runtime.GOARCH == "arm64" {
		maySkipHelperCommand("cat")
		testenv.SkipFlaky(t, 42061)
	}

	// To reduce noise in the final goroutine dump,
	// let other parallel tests complete if possible.