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Fix bug in freespace calculation in heap_multi_insert(). 

If the amount of freespace on page was less than the amount reserved by
fillfactor, the calculation would underflow.

This fixes bug #6643 reported by Tomonari Katsumata.
This commit is contained in:
Heikki Linnakangas 2012-05-16 14:10:29 +03:00
parent 00b0c73f1f
commit 6593c5b5dc
1 changed files with 1 additions and 1 deletions
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2
src/backend/access/heap/heapam.c
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@ -2159,7 +2159,7 @@ heap_multi_insert(Relation relation, HeapTuple *tuples, int ntuples,
{
HeapTuple heaptup = heaptuples[ndone + nthispage];
if (PageGetHeapFreeSpace(page) - saveFreeSpace < MAXALIGN(heaptup->t_len))
if (PageGetHeapFreeSpace(page) < MAXALIGN(heaptup->t_len) + saveFreeSpace)
break;
RelationPutHeapTuple(relation, buffer, heaptup);