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-rw-r--r--src/include/storage/itemptr.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/include/storage/itemptr.h b/src/include/storage/itemptr.h
index 67bbdbb988a..0b81d53f5f8 100644
--- a/src/include/storage/itemptr.h
+++ b/src/include/storage/itemptr.h
@@ -116,6 +116,9 @@ typedef ItemPointerData *ItemPointer;
/*
* ItemPointerCopy
* Copies the contents of one disk item pointer to another.
+ *
+ * Should there ever be padding in an ItemPointer this would need to be handled
+ * differently as it's used as hash key.
*/
#define ItemPointerCopy(fromPointer, toPointer) \
( \