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Mon, 3 Aug 2020 20:04:42 +0000 (13:04 -0700)

Add a documenting assertion that's similar to the nearby assertion added
by commit cd8c73a3. This conveys that the entire call to _bt_pagedel()
does no work if it isn't possible to get a descent stack for the initial
scanblkno page.

src/backend/access/nbtree/nbtpage.c patch | blob | blame | history

diff --git a/src/backend/access/nbtree/nbtpage.c b/src/backend/access/nbtree/nbtpage.c

index 70bac0052fc6aa51f190039edd62942279df061c..53dff326808385ffd0e638c66e1ec7eec86c7ec1 100644 (file)

--- a/src/backend/access/nbtree/nbtpage.c

+++ b/src/backend/access/nbtree/nbtpage.c

@@ -1697,6 +1697,7 @@ _bt_pagedel(Relation rel, Buffer leafbuf, TransactionId *oldestBtpoXact)

if (_bt_leftsib_splitflag(rel, leftsib, leafblkno))

{

ReleaseBuffer(leafbuf);

+ Assert(ndeleted == 0);

return ndeleted;

}

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