DBD Oracle ORA_XMLTYPE Seg Fault

[grump-]

Here is the stored procedure:

PROCEDURE TEST
(
  PARAM1 IN VARCHAR2,
  PARAM2 OUT XMLTYPE
);

And here is the Perl having trouble:

#!/usr/bin/perl
use DBI;
use DBD::Oracle qw(:ora_types);
use Data::Dumper;

my $dbh = DBI->connect( "dsn", "user", "pass", { RaiseError => 1 } );
$dbh->trace(15,"trace");

my $query = $dbh->prepare( qq{BEGIN schema.package.TEST('blah', ?); co
+mmit; END;});

my $xml;
$query->bind_param_inout(1, \$xml, 32000, { ora_type => ORA_XMLTYPE } 
+);
$query->execute();
$dbh->DESTROY;
undef $dbh;

print Dumper($xml);

The binding causes a segmentation fault and never returns, even when wrapped in an eval statement. Here is the last text in the trace:

-> bind_param_inout for DBD::Oracle::st (DBI::st=HASH(0x18d6828)~0x18d
+67c8 1 SCALAR(0x183ddac) 32000 HASH(0x18d67bc))
dbd_bind_ph(): bind :p1 <== undef (type 0 (DEFAULT (varchar)), inout 0
+x183ddac, maxlen 32000, attribs: HASH(0x18d67bc))
dbd_rebind_ph() (1): rebinding :p1 as NULL (not-utf8, ftype 108 (ORA_X
+MLTYPE or SQLT_NTY), csid 0, csform 0, inout 1)
 in  dbd_rebind_ph_xml

Can anyone tell me if I am doing something wrong to get this XMLTYPE out of the stored procedure? I should add that the names of the innocent have been protected in the above code and that I should tell you that this runs in an Apache/MOD Perl environment (I have modified the displayed code to ignore the web bits). Additionally, we are running DBD version 1.42 with Oracle on the 10 version. I should also note that I am able to execute the procedure using Oracle Sql Developer.