1 files changed, 3 insertions, 0 deletions
diff --git a/src/cc4group.h b/src/cc4group.h
index d06f636..f54811b 100644
--- a/src/cc4group.h
+++ b/src/cc4group.h
@@ -107,6 +107,9 @@ typedef struct {
 	// cc4group can modify official groups in the usual ways and can change groups' "official" status through the setOfficial method
 	// users of cc4group should honor and change the "official" status how they think is appropriate (or simply ignore it)
 	bool official;
+
+	// the crc checksum, recalculated to C4GroupEntryCore_ContentsFileNameCRC if it is old or not calculated yet
+	uint32_t crc;
 } CC4Group_EntryInfo;