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Prevent palloc(0) error when parent table has zero columns.

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This commit is contained in:
Tom Lane 2003-04-21 15:19:55 +00:00
parent 185ad7a839
commit ca944bd2d4
1 changed files with 4 additions and 3 deletions
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7
src/backend/commands/tablecmds.c
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@ -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++)