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-rw-r--r--src/mongo/db/index/expression_keys_private.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mongo/db/index/expression_keys_private.h b/src/mongo/db/index/expression_keys_private.h
index 9aba295b579..4267e4d66db 100644
--- a/src/mongo/db/index/expression_keys_private.h
+++ b/src/mongo/db/index/expression_keys_private.h
@@ -36,6 +36,7 @@
namespace mongo {
+class CollatorInterface;
struct TwoDIndexingParams;
struct S2IndexingParams;
@@ -79,6 +80,7 @@ public:
HashSeed seed,
int hashVersion,
bool isSparse,
+ CollatorInterface* collator,
BSONObjSet* keys);
/**