Hi! After upgrade from 4.3.5.Final to 4.3.6.Final, I'm getting "randomly" this new exception:

java.lang.ClassCastException: com.mchange.v2.c3p0.impl.NewProxyPreparedStatement cannot be cast to java.sql.CallableStatement

Environment:

- hibernate-core 4.3.6.Final
- hibernate-c3p0 4.3.6.Final
- mysql 5.6 (mysql-connector-java 5.1.33)
- JDK 1.6

An example stack trace:

[2014-07-20 15:10:23,095] ERROR [http-apr-12001-exec-4] (CommonsLogger.java:38) - Exception occurred during processing request: com.mchange.v2.c3p0.impl.NewProxyPreparedStatement cannot be cast to java.sql.CallableStatement
java.lang.ClassCastException: com.mchange.v2.c3p0.impl.NewProxyPreparedStatement cannot be cast to java.sql.CallableStatement
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:75)
at org.hibernate.loader.Loader.getResultSet(Loader.java:2065)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1862)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1838)
at org.hibernate.loader.Loader.doQuery(Loader.java:909)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:354)
at org.hibernate.loader.Loader.doList(Loader.java:2553)
at org.hibernate.loader.Loader.doList(Loader.java:2539)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2369)
at org.hibernate.loader.Loader.list(Loader.java:2364)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:496)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:387)
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:231)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1264)
at org.hibernate.internal.QueryImpl.list(QueryImpl.java:103)

This problem seems like in all versions above 4.3.5.Final due to change in class ResultSetReturnImpl extract method.
Does anyone know any alternate fix for it apart from downgrading the hibernate version.