submitted as:
https://github.com/ceph/ceph/pull/41470

diff --git a/src/rgw/rgw_string.h b/src/rgw/rgw_string.h
index 257daa9c1..90e64f98a 100644
--- a/src/rgw/rgw_string.h
+++ b/src/rgw/rgw_string.h
@@ -8,6 +8,8 @@
 #include <stdlib.h>
 #include <limits.h>
 #include <string_view>
+#include <string>
+#include <stdexcept>
 
 #include <boost/container/small_vector.hpp>