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-rw-r--r--src/backend/commands/tablecmds.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index e22b48aef29..b4576893c66 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/commands/tablecmds.c,v 1.70 2003/03/21 15:43:02 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/commands/tablecmds.c,v 1.71 2003/04/21 15:19:55 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -591,9 +591,10 @@ MergeAttributes(List *schema, List *supers, bool istemp,
* newattno[] will contain the child-table attribute numbers for
* the attributes of this parent table. (They are not the same
* for parents after the first one, nor if we have dropped
- * columns.)
+ * columns.) +1 is to prevent error if parent has zero columns.
*/
- newattno = (AttrNumber *) palloc(tupleDesc->natts * sizeof(AttrNumber));
+ newattno = (AttrNumber *)
+ palloc((tupleDesc->natts + 1) * sizeof(AttrNumber));
for (parent_attno = 1; parent_attno <= tupleDesc->natts;
parent_attno++)