--- ceph-14.2.6/src/common/bit_str.h.orig 2020-01-24 11:37:20.547679336 -0500
+++ ceph-14.2.6/src/common/bit_str.h 2020-01-24 11:37:55.351904895 -0500
@@ -17,6 +17,7 @@
#include <cstdint>
#include <iosfwd>
#include <functional>
+#include <ostream>
namespace ceph {
class Formatter;