[jira] Created: (AVRO-675) Bytes and fixed setters don't update datum size

[Douglas Creager (JIRA)]

Bytes and fixed setters don't update datum size
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                 Key: AVRO-675
                 URL: https://issues.apache.org/jira/browse/AVRO-675
             Project: Avro
          Issue Type: Bug
          Components: c
    Affects Versions: 1.4.0
            Reporter: Douglas Creager


The setter methods for bytes and fixed datum instances don't update the size 
field.  So, for instance, if you create a datum:

{{avro_datum_t  datum = avro_wrapbytes(NULL, 0);}}

Then later you update that datum to point to a different buffer:

{{avro_wrapbytes_set(datum, "hello", 5);}}

If you write that datum out to a file, you'll get a zero-length value in the 
output, since the size pointer didn't get updated from 0 to 5.

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