Referring a global variable with @see $varname in a docblock causes

Let's say I have the following PHP Code

/**
 * This is a global var.
 *
 * @see $varname
 */
$varname = "test";

/**
 * This is a class
 *
 * @see $varname
 */
class Base
{
}

When I try to parse it

$factory  = \phpDocumentor\Reflection\DocBlockFactory::createInstance();
$docblock = $factory->create($docComment);

Ir crashes the PHP engine in version 8.0.6 and 8.1.6.

首先，使用提供的 docblocks 以及在 PHP 8.0.6 或 8.1.6 上对 DocBlockFactory::createInstance() 和 create($docComment) 的调用来复现崩溃。跟踪 @see $varname 引用的解析过程，并在解析这些示例不再导致 PHP 引擎崩溃时，认为问题已解决。