> I'm having trouble with the avro_value_set_branch function. Hoping anyone > can chime in here. > > avro_value_copy(&branch, &leftNode); > //"Union has no selected branch" error is thrown here
You can only get that kind of error from an avro_value_get_current_branch call. `branch` and `leftNode` should be records, so avro_value_copy shouldn't try to call that function on `branch` or `leftNode` directly. But part of copying a record is copying its fields, so avro_value_copy will at some point try to call get_current_branch on `leftNode`'s `left` and `right` children. My hunch is that's where the error is coming from. Can you send us a snippet on how `leftNode` is created? You'll want to make sure to call set_branch(1) and set_null() on both children of any leaf node, for instance. –doug