Possible ClassCastException in CompositeConfiguration if a special in-memory
configuration is used
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Key: CONFIGURATION-476
URL: https://issues.apache.org/jira/browse/CONFIGURATION-476
Project: Commons Configuration
Issue Type: Bug
Affects Versions: 1.7
Reporter: Oliver Heger
Assignee: Oliver Heger
Some methods of {{CompositeConfiguration}} expect that the in-memory
configuration is of type {{BaseConfiguration}} (a configuration of this type is
created if no specific in-memory configuration was provided).
However, there are constructors accepting an arbitrary {{Configuration}} object
as in-memory configuration. If here a configuration is specified which does not
extend {{BaseConfiguration}}, the casts performed by these methods will fail.
The casts should only be performed if possible.
The following methods are affected:
* _setListDelimiter()_
* _setDelimiterParsingDisabled()_
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