Description:
------------
While testing the 64-bit version of our ODBC driver (StarQuest StarSQL http://www.starquest.com) on Solaris SPARC, with unixODBC 2.2.14 (the current stable version),  we encountered a seg fault when when using PDO-ODBC to call a stored procedure.  The patch below (5.3.1) fixed our problem.

The existing php code is making the assumption that an "enum" has the same size as a "long". That is not the case on many 64-bit systems. We fixed this one by using an local intermediate "long" variable. It could likely also be fixed by modifying the format string. 
 
There may be several other faulty assumptions about the size of "enum" that we didn't encounter.

Here are our patches to 5.3.11:


diff -ur pdo-orig/pdo_stmt.c pdo/pdo_stmt.c
--- pdo-orig/pdo_stmt.c 2009-10-19 14:43:34.000000000 -0700
+++ pdo/pdo_stmt.c      2009-12-03 16:31:18.000000000 -0800
@@ -1657,12 +1657,13 @@
 static int register_bound_param(INTERNAL_FUNCTION_PARAMETERS, pdo_stmt_t *stmt, int is_param) /* {{{ */
 {
        struct pdo_bound_param_data param = {0};
+       long param_type;

        param.paramno = -1;
        param.param_type = PDO_PARAM_STR;

        if (FAILURE == zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS() TSRMLS_CC,
-                       "lz|llz!", &param.paramno, &param.parameter, &param.param_type, &param.max_value_len,
+                       "lz|llz!", &param.paramno, &param.parameter, &param_type, &param.max_value_len,
                        &param.driver_params)) {
                if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sz|llz!", &param.name,
                                &param.namelen, &param.parameter, &param.param_type, &param.max_value_len,
@@ -1671,6 +1672,7 @@
                }
        }

+       param.param_type = (int)param_type;
        if (param.paramno > 0) {
                --param.paramno; /* make it zero-based internally */
        } else if (!param.name) {




Reproduce code:
---------------
<?php

// Connect to the database
try{
$dbh = new PDO("odbc:MAX64", 'USER', 'PWD');
}catch (PDOException $e) {
    print "Error!: " . $e->getMessage();
    die();
}

// Set parameter values
$inval = 'ANNIE';
$inoutval = 'HALL';
$outval = NULL;

// Prepare stored procedure call with three parameters
$sth = $dbh->prepare('CALL USER.SPROC(?, ?, ?)');

// Bind parameter 1 as IN parameter
// Be sure *not* to set a length to indicate it's an IN parameter
$sth->bindParam(1, $inval, PDO::PARAM_STR);

// Bind parameter 2 as INOUT parameter
$sth->bindParam(2, $inoutval, PDO::PARAM_STR|PDO::PARAM_INPUT_OUTPUT, 20);

// Bind parameter 3 as OUT parameter
// Be sure to explicitly set a length to indicate it's an OUTPUT parameter
$sth->bindParam(3, $outval, PDO::PARAM_INT, 20);

// Call the stored procedure
print "Executing stored procedure...\n";
$res = $sth->execute();
....