register_type shared object

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register_type on a custom type multiple times fails (shared object)

Hi, all,

RTI Connext DDS 5.3
Linux (Ubuntu 16.04)
Traditional C++ API
GCC 4.9

Calling register_type on a custom IDL type succeeds the first time, but when called a second time from a shared library, the call fails with the DDS_RETCODE_PRECONDITION_NOT_MET ERROR. Per the documentation, this indicates:

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