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Index: src/backend/utils/mmgr/portalmem.c =================================================================== RCS file: /cvsroot/pgsql/src/backend/utils/mmgr/portalmem.c,v retrieving revision 1.115 diff -c -r1.115 portalmem.c *** src/backend/utils/mmgr/portalmem.c 2 Jan 2010 16:57:58 -0000 1.115 --- src/backend/utils/mmgr/portalmem.c 17 Jan 2010 13:19:07 -0000 *************** *** 684,689 **** --- 684,700 ---- PortalReleaseCachedPlan(portal); /* + * Remove the reference to PlannedStmts and/or utility + * statements. This is neccessary since + * PortalReleaseCachedPlan might release memory context which + * stmts belogs to and subsequent call to exec_execute_message + * looks into stmts to check if it's a transaction + * command(which is allow to call even if in an aborted + * transaction state), which might refer to freed memory. + */ + portal->stmts = NULL; + + /* * Any resources belonging to the portal will be released in the * upcoming transaction-wide cleanup; they will be gone before we run * PortalDrop.