Make [VACUUM] ANALYZE safe on zero-column tables.

tglsfdc · tglsfdc · commit 9fdb1de3ba58 · 2003-04-25T21:29:18.000Z
diff --git a/src/backend/commands/analyze.c b/src/backend/commands/analyze.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/commands/analyze.c,v 1.52 2003/03/23 05:14:36 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/analyze.c,v 1.53 2003/04/25 21:29:18 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -269,7 +269,8 @@ analyze_rel(Oid relid, VacuumStmt *vacstmt)
 	else
 	{
 		attr_cnt = onerel->rd_att->natts;
-		vacattrstats = (VacAttrStats **) palloc(attr_cnt *
+		/* +1 here is just to avoid palloc(0) with zero-column table */
+		vacattrstats = (VacAttrStats **) palloc((attr_cnt + 1) *
 												sizeof(VacAttrStats *));
 		tcnt = 0;
 		for (i = 1; i <= attr_cnt; i++)

Original file line number	Diff line number	Diff line change
`@@ -8,7 +8,7 @@`
`8`	`8`	`*`
`9`	`9`	`*`
`10`	`10`	`* IDENTIFICATION`
`11`		`- * $Header: /cvsroot/pgsql/src/backend/commands/analyze.c,v 1.52 2003/03/23 05:14:36 tgl Exp $`
	`11`	`+ * $Header: /cvsroot/pgsql/src/backend/commands/analyze.c,v 1.53 2003/04/25 21:29:18 tgl Exp $`
`12`	`12`	`*`
`13`	`13`	`*-------------------------------------------------------------------------`
`14`	`14`	`*/`
`@@ -269,7 +269,8 @@ analyze_rel(Oid relid, VacuumStmt *vacstmt)`
`269`	`269`	`else`
`270`	`270`	`{`
`271`	`271`	`attr_cnt = onerel->rd_att->natts;`
`272`		`- vacattrstats = (VacAttrStats *) palloc(attr_cnt `
	`272`	`+ /* +1 here is just to avoid palloc(0) with zero-column table */`
	`273`	`+ vacattrstats = (VacAttrStats *) palloc((attr_cnt + 1) `
`273`	`274`	`sizeof(VacAttrStats *));`
`274`	`275`	`tcnt = 0;`
`275`	`276`	`for (i = 1; i <= attr_cnt; i++)`