Github user chetmurthy commented on the issue:
https://github.com/apache/thrift/pull/1435
BTW, this fix is necessary if I'm going to fix unions so they transport
exactly one of their fields. B/c (of course) right now, the plugin code
depends on that not being the case.
I have the C++ code (compiler + lib) ready-to-go-and-tested, but (obv)
can't submit a PR until this code goes thru, b/c it would break the build.---
