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Tweak palloc/repalloc to allow zero bytes to be requested, as per recent

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proposal.  Eliminate several dozen now-unnecessary hacks to avoid palloc(0).
(It's likely there are more that I didn't find.)
This commit is contained in:
Tom Lane
2004-06-05 19:48:09 +00:00
parent 24a1e20f14
commit c3a153afed
19 changed files with 113 additions and 113 deletions
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11
src/backend/commands/analyze.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/analyze.c,v 1.73 2004/05/26 04:41:09 neilc Exp $
* $PostgreSQL: pgsql/src/backend/commands/analyze.c,v 1.74 2004/06/05 19:48:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -226,9 +226,8 @@ analyze_rel(Oid relid, VacuumStmt *vacstmt)
else
{
attr_cnt = onerel->rd_att->natts;
/* +1 here is just to avoid palloc(0) with zero-column table */
vacattrstats = (VacAttrStats **) palloc((attr_cnt + 1) *
sizeof(VacAttrStats *));
vacattrstats = (VacAttrStats **)
palloc(attr_cnt * sizeof(VacAttrStats *));
tcnt = 0;
for (i = 1; i <= attr_cnt; i++)
{
@ -505,8 +504,8 @@ compute_index_stats(Relation onerel, double totalrows,
estate);
/* Compute and save index expression values */
exprvals = (Datum *) palloc((numrows * attr_cnt + 1) * sizeof(Datum));
exprnulls = (bool *) palloc((numrows * attr_cnt + 1) * sizeof(bool));
exprvals = (Datum *) palloc(numrows * attr_cnt * sizeof(Datum));
exprnulls = (bool *) palloc(numrows * attr_cnt * sizeof(bool));
numindexrows = 0;
tcnt = 0;
for (rowno = 0; rowno < numrows; rowno++)