*** a/src/backend/access/spgist/spgdoinsert.c
--- b/src/backend/access/spgist/spgdoinsert.c
*************** moveLeafs(Relation index, SpGistState *s
*** 412,419 ****
  
  	/* Locate the tuples to be moved, and count up the space needed */
  	i = PageGetMaxOffsetNumber(current->page);
! 	toDelete = (OffsetNumber *) palloc(sizeof(OffsetNumber) * i);
! 	toInsert = (OffsetNumber *) palloc(sizeof(OffsetNumber) * (i + 1));
  
  	size = newLeafTuple->size + sizeof(ItemIdData);
  
--- 412,419 ----
  
  	/* Locate the tuples to be moved, and count up the space needed */
  	i = PageGetMaxOffsetNumber(current->page);
! 	toDelete = (OffsetNumber *) palloc0(MAXALIGN(sizeof(OffsetNumber) * i));
! 	toInsert = (OffsetNumber *) palloc0(MAXALIGN(sizeof(OffsetNumber) * (i + 1)));
  
  	size = newLeafTuple->size + sizeof(ItemIdData);
  
*************** doPickSplit(Relation index, SpGistState
*** 722,731 ****
  	n = max + 1;
  	in.datums = (Datum *) palloc(sizeof(Datum) * n);
  	heapPtrs = (ItemPointerData *) palloc(sizeof(ItemPointerData) * n);
! 	toDelete = (OffsetNumber *) palloc(sizeof(OffsetNumber) * n);
! 	toInsert = (OffsetNumber *) palloc(sizeof(OffsetNumber) * n);
  	newLeafs = (SpGistLeafTuple *) palloc(sizeof(SpGistLeafTuple) * n);
! 	leafPageSelect = (uint8 *) palloc(sizeof(uint8) * n);
  
  	xlrec.node = index->rd_node;
  	STORE_STATE(state, xlrec.stateSrc);
--- 722,731 ----
  	n = max + 1;
  	in.datums = (Datum *) palloc(sizeof(Datum) * n);
  	heapPtrs = (ItemPointerData *) palloc(sizeof(ItemPointerData) * n);
! 	toDelete = (OffsetNumber *) palloc0(MAXALIGN(sizeof(OffsetNumber) * n));
! 	toInsert = (OffsetNumber *) palloc0(MAXALIGN(sizeof(OffsetNumber) * n));
  	newLeafs = (SpGistLeafTuple *) palloc(sizeof(SpGistLeafTuple) * n);
! 	leafPageSelect = (uint8 *) palloc0(MAXALIGN(sizeof(uint8) * n));
  
  	xlrec.node = index->rd_node;
  	STORE_STATE(state, xlrec.stateSrc);