[JIRA] Closed: (JOST-174) ChainingMetadataProvider calls clear() on unmodifiable list

[Chad La Joie (JIRA)]

     [ https://issues.shibboleth.net/jira/browse/JOST-174?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chad La Joie closed JOST-174.
-----------------------------

       Resolution: Fixed
    Fix Version/s: 2.5.2

fixed in rev 1558

> ChainingMetadataProvider calls clear() on unmodifiable list
> -----------------------------------------------------------
>
>                 Key: JOST-174
>                 URL: https://issues.shibboleth.net/jira/browse/JOST-174
>             Project: OpenSAML 2 - Java
>          Issue Type: Bug
>            Reporter: philvarner at idp.protectnetwork.org
>            Assignee: Chad La Joie
>             Fix For: 2.5.2
>
>
> in method setProviders, code is:
>     if (newProviders == null || newProviders.isEmpty()) {
>                 providers.clear();
>                 return;
>             }
> but the default object for providers is:
>         providers = Collections.EMPTY_LIST;
> This was changed between 2.3.1 and 2.5.1. In 2.3.1, providers was an empty array list.  
> I believe the fix to this is to replace providers.clear() with providers = Collections.EMPTY_LIST.

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