Driver has bug when calling stored procecure using cursor.

[young-ku chae]

When I call following stored procedure, driver returns invalid garbage output parameter value.
If I remove "open v_cursor" line, then it works fine.

Stored Procedure
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CREATE PROCEDURE `cursor_test`(out o_int int, out o_string varchar(20))
BEGIN
declare v_cursor cursor for select 2;

open v_cursor;

set o_int = 123;
set o_string = "chaeyk";
END
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C# code
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using System.Data;
using System.Data.Odbc;

...

string connectionString = "Driver={MySQL ODBC 5.3 UNICODE Driver};Server=xxxx;Port=yyyy;Database=zzzz;User = aaa; Password = bbb; Option = 4194304;";

using (OdbcConnection connection = new OdbcConnection(connectionString))
{
OdbcCommand command = new OdbcCommand("call cursor_test(?, ?)", connection);
command.Parameters.Add("o_int", SqlDbType.Int).Direction = ParameterDirection.Output;
command.Parameters.Add("o_string", SqlDbType.VarChar).Direction = ParameterDirection.Output;

connection.Open();
command.ExecuteNonQuery();
Console.WriteLine("\t{0}\t{1}", command.Parameters["o_int"].Value, command.Parameters["o_string"].Value);
}
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C++ code
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_ConnectionPtr pConnection;
pConnection.CreateInstance(__uuidof(Connection));

_bstr_t bstrConnection = "Driver={MySQL ODBC 5.3 UNICODE Driver};Server=xxxx;Port=yyyy;Database=zzzz;User = aaa; Password = bbb; Option = 4194304;";
_bstr_t bstrUser = user;
_bstr_t bstrPass = pass;

pConnection->Open(bstrConnection, bstrUser, bstrPass, adModeUnknown);
pConnection->CursorLocation = adUseClient;
pConnection->PutCommandTimeout(300);

_CommandPtr cmd;
cmd.CreateInstance(__uuidof(Command));
cmd->ActiveConnection = pConnection;

cmd->CommandType = adCmdStoredProc;
cmd->CommandText = _bstr_t(L"cursor_test");
cmd->Parameters->Append(cmd->CreateParameter(_bstr_t(L"o_int"), adInteger, adParamOutput, 4, _variant_t(_bstr_t(L"0"))));
cmd->Parameters->Append(cmd->CreateParameter(_bstr_t(L"o_string"), adVarWChar, adParamOutput, 4096, _variant_t(_bstr_t(L""))));

_variant_t vNull;
vNull.vt = VT_ERROR;
vNull.scode = DISP_E_PARAMNOTFOUND;

cmd->Execute(&vNull, &vNull, adCmdStoredProc);

_variant_t v = pCmd->Parameters->Item[_variant_t("o_int")]->Value;
_bstr_t bstr = (_bstr_t) v;
const char* str = (const char*) bstr;
printf_s("o_int=%s\n", name, str);

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