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-rw-r--r--src/backend/storage/page/itemptr.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/backend/storage/page/itemptr.c b/src/backend/storage/page/itemptr.c
index c9918289691..244d8fba2f6 100644
--- a/src/backend/storage/page/itemptr.c
+++ b/src/backend/storage/page/itemptr.c
@@ -28,6 +28,13 @@
bool
ItemPointerEquals(ItemPointer pointer1, ItemPointer pointer2)
{
+ /*
+ * We really want ItemPointerData to be exactly 6 bytes. This is rather a
+ * random place to check, but there is no better place.
+ */
+ StaticAssertStmt(sizeof(ItemPointerData) == 3 * sizeof(uint16),
+ "ItemPointerData struct is improperly padded");
+
if (ItemPointerGetBlockNumber(pointer1) ==
ItemPointerGetBlockNumber(pointer2) &&
ItemPointerGetOffsetNumber(pointer1) ==