StackOverflowError in FreemarkerConfig with badly configured sharedVariables
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Key: MAGNOLIA-3190
URL: http://jira.magnolia-cms.com/browse/MAGNOLIA-3190
Project: Magnolia
Issue Type: Bug
Components: freemarker
Affects Versions: 4.3.1
Reporter: Grégory Joseph
Assignee: Grégory Joseph
Fix For: 4.3.x
While configuring {{/server/rendering/freemarker/sharedVariables}}, one can
enter an endless loop, quickly resulting in a StackOverflowError; this happens,
for instance, when adding a node under sharedVariables, and not filling it in
it with a class attribute. The error only shows up on startup, so if the
configuration is complete and correct before restarting Magnolia, one should be
safe.
The reason this happens is because {{FreemarkerConfig#addSharedVariable}} needs
an instance of {{ObjectWrapper}}, and in turns, our {{MagnoliaObjectWrapper}}
needs an instance of FreemarkerConfig, which it gets via {{Components}} Since
Content2Bean calls addSharedVariable() before FreemarkerConfig is registered in
{{Components}}, this results in a stack overflow.
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