To install:

1) chrome://extensions/
2) click "[+] Developer Mode" in top right
3) "Load unpacked extension..."
4) pick $GOROOT/misc/chrome/gophertool

	// Check if we can use USTAR prefix/suffix splitting.
	var namePrefix string
	if prefix, suffix, ok := splitUSTARPath(hdr.Name); ok {
		namePrefix, hdr.Name = prefix, suffix
	}

	// Pack the main header.
	var f formatter
	blk := tw.templateV7Plus(hdr, f.formatString, f.formatOctal)
	f.formatString(blk.toUSTAR().prefix(), namePrefix)
	blk.setFormat(FormatUSTAR)
	if f.err != nil {

pkg syscall (freebsd-386), const DLT_JUNIPER_MLFR = 131
pkg syscall (freebsd-386), const DLT_JUNIPER_MLPPP = 130
pkg syscall (freebsd-386), const DLT_JUNIPER_MONITOR = 164
pkg syscall (freebsd-386), const DLT_JUNIPER_PIC_PEER = 174
pkg syscall (freebsd-386), const DLT_JUNIPER_PPP = 179
pkg syscall (freebsd-386), const DLT_JUNIPER_PPPOE = 167
pkg syscall (freebsd-386), const DLT_JUNIPER_PPPOE_ATM = 168

#cgo LDFLAGS: -framework CoreFoundation
#include <CoreFoundation/CoreFoundation.h>
*/
import "C"
import (
	"runtime/debug"
	"testing"
	"unsafe"
)

func test21897(t *testing.T) {
	// Please write barrier, kick in soon.
	defer debug.SetGCPercent(debug.SetGCPercent(1))

	for i := 0; i < 10000; i++ {
		testCFNumberRef()
		testCFDateRef()
		testCFBooleanRef()
		// Allocate some memory, so eventually the write barrier is enabled