Uninitialized scalar field

The field will contain an arbitrary value left over from earlier computations. A scalar field is not initialized by the constructor
/src/mongo/db/modules/enterprise/src/fcbis/backup_file_cloner.h:182: UNINIT_CTOR 120845 Class member declaration for "_fileOffset".
/src/mongo/db/modules/enterprise/src/fcbis/backup_file_cloner.cpp:66: UNINIT_CTOR 120845 Non-static class member "_fileOffset" is not initialized in this constructor nor in any functions that it calls.
/src/mongo/db/modules/enterprise/src/fcbis/backup_file_cloner.h:183: UNINIT_CTOR 120845 Class member declaration for "_sawEof".
/src/mongo/db/modules/enterprise/src/fcbis/backup_file_cloner.cpp:66: UNINIT_CTOR 120845 Non-static class member "_sawEof" is not initialized in this constructor nor in any functions that it calls.