const os.supportsCloseOnExec

5 uses

	os (current package)
		file_unix.go#L293: 	if !supportsCloseOnExec {
		file_unix.go#L316: 	if !supportsCloseOnExec {
		removeall_at.go#L176: 	if !supportsCloseOnExec {
		root_unix.go#L47: 	if !supportsCloseOnExec {
		sys_unix.go#L14: const supportsCloseOnExec = true