Philip Rizk created AVRO-2033:
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Summary: GenericUnions constructor defaults to a broken state
Key: AVRO-2033
URL: https://issues.apache.org/jira/browse/AVRO-2033
Project: Avro
Issue Type: Bug
Components: c++
Affects Versions: 1.7.7
Reporter: Philip Rizk
Priority: Minor
Creating a GenericUnion with a NodePtr results in an object that causes errors
when written. Specifically the index for the union type will be invalid. This
will only be caught when reading the serialized record.
The issue is the consturctor:
{code}
GenericUnion(const NodePtr& schema) :
GenericContainer(AVRO_UNION, schema), curBranch_(schema->leaves()) {
{code}
Setting curBranch_ to schema->leaves() will result in setting the value to an
invalid index (one more than available. I believe the constructor in question
should be changed to:
{code}
GenericContainer(AVRO_UNION, schema), curBranch_(0) {
{code}
This should ensure the union is set to the default branch.
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