oracle (xe) stored procedures with bind variables get errors

with Qt 4.7.0 I get errors when executing a Oracle stored procedure with bind variables. The same works fine for Qt 4.6.3.

Involved products:
-------------------------

• Database server: Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
• DB-Client used for compiling Qt SQL plugin: Oracle Instant Client Release 10.2.0.3.0
• gcc for compiling Qt 4.7.0 and application: gcc (Ubuntu 4.4.3-4ubuntu5) 4.4.3

Situation:
------------
A simple QtGui application connects via oci Sql plugin using Oracle Instant Client to an Oracle XE database server and calls a simple stored procedure with 2 bind variables. As a result the client connection aborts with "ORA-03113: end-of-file on communication channel". When using Qt 4.6.3 instead of Qt 4.7.0 in the same constellation it works fine.

Qt Client-Code:
---------------------
QSqlQuery sqlQuery;
QString currentVersion = "Version0815";
QString response;

response.resize(200);

sqlQuery.prepare("CALL k3_check_app_version(?, ?)");
sqlQuery.addBindValue(currentVersion);
sqlQuery.addBindValue(response, QSql::Out);

// Also tried this alternative:
//sqlQuery.bindValue(0, currentVersion);
//sqlQuery.bindValue(1, response, QSql::Out);

sqlQuery.exec();

The called Oracle Stored-Procedure:
--------------------------------------------------
CREATE OR REPLACE PROCEDURE "KARO3"."K3_CHECK_APP_VERSION"
(v_version IN varchar2,
v_response OUT varchar2
) is
begin

declare
v_num number;

begin
if v_version IN ('1.10','1.11','1.12') then
v_response := 'SUPPORTED';
else
v_response := 'UNSUPPORTED';
end if;

exception
when others then
v_response := 'UNSUPPORTED';

end;
end;
/

Oracle dump on server side:
---------------------------------------
ORA-07445: exception encountered: core dump [B77FD313] [SIGSEGV] [Address not mapped to object] [0x0]

PARSING IN CURSOR #2 len=34 dep=0 uid=37 oct=170 lid=37 tim=1255632076547037 hv=1809104850 ad='3a12cbb0'
CALL k3_check_app_version(:f, :fb)
END OF STMT
PARSE #2:c=0,e=2138,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=1,tim=1255632076547003
BINDS #2:
kkscoacd
Bind#0
oacdty=01 mxl=32(22) mxlc=00 mal=00 scl=00 pre=00
oacflg=01 fl2=1000000 frm=02 csi=2000 siz=2032 off=0
kxsbbbfp=b70fc7c8 bln=32 avl=22 flg=05
value=""
Bind#1
oacdty=01 mxl=2000(492) mxlc=00 mal=00 scl=00 pre=00
oacflg=03 fl2=1000000 frm=02 csi=2000 siz=0 off=32
kxsbbbfp=b70fc7e8 bln=2000 avl=00 flg=01
Exception signal: 11 (SIGSEGV), code: 1 (Address not mapped to object), addr: 0x0, PC: [0xb786a313, B786A313]

It seems that the first bind value (variable version) is not filled at all. But it also may crash for another reason (???)