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https://issues.apache.org/jira/browse/THRIFT-3336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14904746#comment-14904746
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James E. King, III commented on THRIFT-3336:
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Agree, but there are only declarations and no definitions. Definitions are
only emitted for user types. If the original intention was provide definitions
for internal structure helpers that will need to be tracked in a separate
defect.
> Thrift generated streaming operators added in 0.9.2 cannot be overridden
> ------------------------------------------------------------------------
>
> Key: THRIFT-3336
> URL: https://issues.apache.org/jira/browse/THRIFT-3336
> Project: Thrift
> Issue Type: Bug
> Components: C++ - Compiler
> Affects Versions: 0.9.2, 0.9.3
> Reporter: James E. King, III
> Assignee: James E. King, III
>
> I work on one project that has been using thrift-0.8.0 and I am updating it
> to 0.9.3. The project defines streaming operators for "operator <<" on a
> variety of thrift-generated types.
> The fix added in THRIFT-2067 provides similar but not identical functionality
> however it was done in a way that cannot be overridden, and this causes
> projects upgrading from versions prior to 0.9.2 with their own streaming
> operators to fail to compile.
> One way to make the streaming operator virtual is to follow the example
> provided in
> http://stackoverflow.com/questions/5189614/operator-and-inheritance
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