Frealloc32 is ok ,but disconnect db link occur error

Question

TUXEDO 9.1
windows xp pro+sp3+
Oracle client 10.2.0.1
OCCI+XA
my code :
stmt_temp = conn->createStatement(ls_sql);
while (rs->status() == ResultSet::DATA_AVAILABLE)
ll_right_id = rs->getNumber(1);
Fadd32(l_output,RIGHT_ID,(char *)&ll_right_id,0);
long ll_free = Funused32(a_buf);
if (ll_free <=min_buf_size)
l_new_buf = Frealloc32(l_output ,0,(FLDLEN32)(ll_total+outbuf_size*2));
l_output = l_new_buf;
stmt_temp->closeResultSet(rs);
conn->terminateStatement(stmt_temp );
realloc is ok,but terminateStatement occur crash,I try three case.
case 1:alloc outout buf enough large,then no need realloc.result is ok
case 2:only comment terminateStatement,result is ok
case 3:only comment Frealloc32,result is ok
I think frealloc distory stmt_temp ,so occur terminateStatement crash.
who can help me???

Answer 1

There is coding issue in the function Realloc that you can not change l_output buffer by this way. At least a double pointer needed, such as &l_output and Realloc(char **) should be declared.
So the correct code looks,
//alloc output buffer
l_output = (FBFR32 *)tpalloc("FML32",NULL,outbuf_size);
while (...)
//get var from resultset
ll_right_id = rs->getNumber(i);
//add var to output buffer
Fadd32(l_output,RIGHT_ID,(char *)&ll_right_id,0);
//call function Realloc
Realloc(&l_output);
//function Realloc
int Realloc(FBFR32 **a_buf)
FBFR32 *l_new_buf;
long ll_free = Funused32(a_buf);
if (ll_free <=min_buf_size)
//realloc temp buffer.size += oldsize
l_new_buf = tprealloc(a_buf ,0,(FLDLEN32)(ll_total+outbuf_size));
if (l_new_buf == NULL)
return -1;
//change pointer
*a_buf = l_new_buf;
return 1;
Now the l_output points the new allocated buffer.
Wayne