Description:
------------
PHP 5.1.1 and pdo_informix 1.0.0 on Solaris 9..

PHP segfaults when trying to 
When trying to execute prepared, parameterized SQL.

It seems the driver_data structure pointer gets nullified somewhere where it shouldnt(!?) I *suspect* something v odd happened in stmt_bind_parameter()...

Any help appreciated!

Reproduce code:
---------------
<?php
 
        $db = new PDO("informix:database=martin; server=test1_dbs; EnableScrollableCursors=1", "test", "test");
 
        echo "Dumping db\n";
        var_dump($db);
 
        $stmt = $db->prepare('select tabname from systables where tabname = :p_name' );
 
        echo "Dumping stmt\n";
        var_dump($stmt);
 
        $x = $stmt->execute(array(':p_name' => "systables"));
 
        echo "Dumping x\n";
        var_dump($x);
 
        $stmt = null;
        $db = null;
        echo "All done\n";
?>


Actual result:
--------------
I get:
 
Dumping db
object(PDO)#1 (0) {
}
Dumping stmt
object(PDOStatement)#2 (1) {
  ["queryString"]=>
  string(53) "select tabname from systables where tabname = :p_name"
}
Segmentation Fault(coredump)

I tried to get a backtrace.....
 
#0  0x00125604 in stmt_parameter_pre_execute (stmt=0x69b888, curr=0x6d2a78)
    at /opt/php-5.1.2/ext/pdo_informix/informix_statement.c:409
409                             if (param_res->ctype == SQL_C_LONG)
(gdb) 
(gdb) bt
#0  0x00125604 in stmt_parameter_pre_execute (stmt=0x69b888, curr=0x6d2a78)
    at /opt/php-5.1.2/ext/pdo_informix/informix_statement.c:409
#1  0x00126550 in informix_stmt_param_hook (stmt=0x69b888, param=0x6d2a78, 
    event_type=6933776) at /opt/php-5.1.2/ext/pdo_informix/informix_statement.c:745
#2  0x00117310 in dispatch_param_event (stmt=0x69b888, event_type=7154296)
    at /opt/php-5.1.2/ext/pdo/pdo_stmt.c:149