[
http://tracker.firebirdsql.org/browse/CORE-1894?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Pavel Cisar reopened CORE-1894:
-------------------------------
This issue is fixed only partially. While second test case (drop + add field
with circular reference) is fixed, the originally reported case (alter field to
create circular reference) still crash the server (2.5.0.26074).
> Circular dependencies between computed fields crashs the engine
> ---------------------------------------------------------------
>
> Key: CORE-1894
> URL: http://tracker.firebirdsql.org/browse/CORE-1894
> Project: Firebird Core
> Issue Type: Bug
> Components: Engine
> Affects Versions: 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.5 Initial, 2.1.0, 2.0.4,
> 2.5.0
> Reporter: Adriano dos Santos Fernandes
> Assignee: Adriano dos Santos Fernandes
>
> Ability to alter computed fields introduced the possibility of circular
> dependencies between them.
> create table t (
> n integer,
> n1 computed by (n),
> n2 computed by (n1)
> );
> alter table t alter n1 computed by (n2);
> select * from t;
> -- segmentation fault (due to stack overflow in CMP/pass1)
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