[AVRO-1463] Undefined values cause warnings when unions with null serialized

• Type: Bug
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Fix Version/s: 1.9.0
• Component/s: perl
• Release Note: Perl: fix union serialization warnings when data is undef
• Tags: perl
• Assignee: John Karp
• Reporter: John Karp
• Created: 21/Feb/14 02:35
• Updated: 24/Oct/19 08:25

Description

This code produces warnings:

$enc = '';
$schema = Avro::Schema->parse(q(["long","null"]));
Avro::BinaryEncoder->encode(
    schema => $schema,
    data => undef,
    emit_cb => sub { $enc .= ${ $_[0] } },
);

Use of uninitialized value $data in pack at /home/johnkarp/git/avro/lang/perl/blib/lib/Avro/Schema.pm line 285.
Use of uninitialized value $data in string eq at /home/johnkarp/git/avro/lang/perl/blib/lib/Avro/Schema.pm line 287.