Uninitialized pointer field

The pointer field will point to an arbitrary memory location, any attempt to write may cause corruption. A pointer field is not initialized in the constructor
/src/mongo/db/exec/express/express_plan.h:359: UNINIT_CTOR 144996 Class member declaration for "_collection".
/src/mongo/db/exec/express/express_plan.h:252: UNINIT_CTOR 144996 Non-static class member "_collection" is not initialized in this constructor nor in any functions that it calls.
/src/mongo/db/exec/express/express_plan.h:360: UNINIT_CTOR 144996 Class member declaration for "_indexCatalogEntry".
/src/mongo/db/exec/express/express_plan.h:252: UNINIT_CTOR 144996 Non-static class member "_indexCatalogEntry" is not initialized in this constructor nor in any functions that it calls.
/src/mongo/db/exec/express/express_plan.h:366: UNINIT_CTOR 144996 Class member declaration for "_stats".
/src/mongo/db/exec/express/express_plan.h:252: UNINIT_CTOR 144996 Non-static class member "_stats" is not initialized in this constructor nor in any functions that it calls.