[jira] [Created] (THRIFT-3365) IDL Union structs nil dereferencing in Go

["Jamil (JIRA)" <ji...@apache.org>]

Jamil created THRIFT-3365:
-----------------------------

             Summary: IDL Union structs nil dereferencing in Go
                 Key: THRIFT-3365
                 URL: https://issues.apache.org/jira/browse/THRIFT-3365
             Project: Thrift
          Issue Type: Bug
          Components: Go - Compiler
    Affects Versions: 0.9.2
            Reporter: Jamil


Suppose I have a union 

{code}
union Select {
    1: Aggregate selectAggregate,
    2: SelectColumns selectColumns,
}
{code}

the Go representation looks like

{code}
type Select struct {
	SelectAggregate *Aggregate     `thrift:"selectAggregate,1" json:"selectAggregate"`
	SelectColumns   *SelectColumns `thrift:"selectColumns,2" json:"selectColumns"`
}
{code}

now when I create 
{code}
Select = NewSelect()
Select.SelectColumns = SelectColumns{
...
}
{code}

I get a nil dereference pointer when the code tries to invoke 
select.SelectAggregate.writeField1()

however if I create a empty aggregate instantiation I get the error:

Cannot read a TUnion with more than one set value!





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