I have used FooPlugin_get_serialized_sample_max_size() with Connext 5.x with no issues. But now trying to move to Connext 7.x and those same calls are causing segmentation faults.
I've always called it with null parameters: FooPlugin_get_serialized_sample_max_size(0,0,0,0) and it returned the max size of the type Foo (in v5.x)