PDO, PHP 8: Uncaught TypeError: method_exists()

[f7h]

The following code throws a fatal error with PHP 8.0.15:

include_once __DIR__ . '/../adodb.inc.php';

$db = ADOnewConnection('pdo_mysql://user:pass@localhost/northwind');

var_dump($db->param('test'));

Expected:
string(1) "?"

Actual:
Fatal error: Uncaught TypeError: method_exists(): Argument #1 ($object_or_class) must be of type object|string, null given in drivers/adodb-pdo.inc.php:251

This is also the case for a few other methods in ADODB_pdo.

[dregad]

@f7h thanks for your bug report.

This is also the case for a few other methods in ADODB_pdo.

Since you appear to have already identified them, it would be great if you could save us some time and provide us with the list.

[f7h]

It's always the same construct:

if(method_exists($this->_driver, 'some_method')) {

in:

Concat()
param()
metaIndexes()
metaPrimaryKeys()
metaForeignKeys()
metaProcedures()
SetAutoCommit()
SetTransactionMode()
beginTrans()
commitTrans()
RollbackTrans()
createSequence()
DropSequence()
GenID()