hash: Fix write-ahead logging bug.

robertmhaas · robertmhaas · commit 75a1cbdc3cfc · 2017-04-05T11:45:35.000-04:00
The size of the data is not the same thing as the size of the size of the data. Reported off-list by Tushar Ahuja. Fix by Ashutosh Sharma, reviewed by Amit Kapila. Discussion: http://postgr.es/m/CAE9k0PnmPDXfvf8HDObme7q_Ewc4E26ukHXUBPySoOs0ObqqaQ@mail.gmail.com
diff --git a/src/backend/access/hash/hash.c b/src/backend/access/hash/hash.c
@@ -707,7 +707,7 @@ hashbulkdelete(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 		xlrec.ntuples = metap->hashm_ntuples;
 
 		XLogBeginInsert();
-		XLogRegisterData((char *) &xlrec, sizeof(SizeOfHashUpdateMetaPage));
+		XLogRegisterData((char *) &xlrec, SizeOfHashUpdateMetaPage);
 
 		XLogRegisterBuffer(0, metabuf, REGBUF_STANDARD);
 
