var runtime.freemark

5 uses

	runtime (current package)
		heapdump.go#L473: var freemark [_PageSize / 8]bool
		heapdump.go#L486: 		if n > uintptr(len(freemark)) {
		heapdump.go#L492: 				freemark[freeIndex] = true
		heapdump.go#L497: 			if freemark[j] {
		heapdump.go#L498: 				freemark[j] = false