
When extracting an attr from a cached tuple in the syscache with SysCacheGetAttr the isnull parameter must be checked in case the attr cannot be NULL. For cases when this is known beforehand, a wrapper is introduced which perform the errorhandling internally on behalf of the caller, invoking an elog in case of a NULL attr. Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Reviewed-by: Peter Eisentraut <peter.eisentraut@enterprisedb.com> Reviewed-by: David Rowley <dgrowleyml@gmail.com> Discussion: https://postgr.es/m/AD76405E-DB45-46B6-941F-17B1EB3A9076@yesql.se