AssertionError: Type name cannot be empty

[Jimbolino]

ERROR: While parsing lib/OpenCloud/Database/Resource/Configuration.php...
AssertionError: Type name cannot be empty in /home/jim/projects/phan/src/Phan/Language/Type.php:422
Stack trace:
#0 /home/jim/projects/phan/src/Phan/Language/Type.php(1392): Phan\Language\Type::make('\\', '', Array, false, 2)
#1 /home/jim/projects/phan/src/Phan/Language/UnionType.php(385): Phan\Language\Type::fromStringInContext('\\', Object(Phan\Language\Context), 2, Object(Phan\CodeBase))
#2 /home/jim/projects/phan/src/Phan/Language/Element/Comment/Builder.php(259): Phan\Language\UnionType::fromStringInContext('\\', Object(Phan\Language\Context), 2, Object(Phan\CodeBase))
#3 /home/jim/projects/phan/src/Phan/Language/Element/Comment/Builder.php(633): Phan\Language\Element\Comment\Builder->returnTypeFromCommentLine('* @return \\@std...', 3)
#4 /home/jim/projects/phan/src/Phan/Language/Element/Comment/Builder.php(393): Phan\Language\Element\Comment\Builder->maybeParseReturn(3, '* @return \\@std...')
#5 /home/jim/projects/phan/src/Phan/Language/Element/Comment/Builder.php(320): Phan\Language\Element\Comment\Builder->parseCommentLine(3, '* @return \\@std...')
#6 /home/jim/projects/phan/src/Phan/Language/Element/Comment.php(411): Phan\Language\Element\Comment\Builder->build()
#7 /home/jim/projects/phan/src/Phan/Language/Element/Method.php(515): Phan\Language\Element\Comment::fromStringInContext('/**\n     * Gene...', Object(Phan\CodeBase), Object(Phan\Language\Context), 68, 5)
#8 /home/jim/projects/phan/src/Phan/Parse/ParseVisitor.php(314): Phan\Language\Element\Method::fromNode(Object(Phan\Language\Context), Object(Phan\CodeBase), Object(ast\Node), Object(Phan\Language\FQSEN\FullyQualifiedMethodName), Object(Phan\Language\Element\Clazz))
#9 /home/jim/projects/phan/src/Phan/Analysis.php(187): Phan\Parse\ParseVisitor->visitMethod(Object(ast\Node))
#10 /home/jim/projects/phan/src/Phan/Analysis.php(214): Phan\Analysis::parseNodeInContext(Object(Phan\CodeBase), Object(Phan\Language\Context), Object(ast\Node))
#11 /home/jim/projects/phan/src/Phan/Analysis.php(214): Phan\Analysis::parseNodeInContext(Object(Phan\CodeBase), Object(Phan\Language\Context), Object(ast\Node))
#12 /home/jim/projects/phan/src/Phan/Analysis.php(214): Phan\Analysis::parseNodeInContext(Object(Phan\CodeBase), Object(Phan\Language\Context), Object(ast\Node))
#13 /home/jim/projects/phan/src/Phan/Analysis.php(142): Phan\Analysis::parseNodeInContext(Object(Phan\CodeBase), Object(Phan\Language\Context), Object(ast\Node))
#14 /home/jim/projects/phan/src/Phan/Phan.php(207): Phan\Analysis::parseFile(Object(Phan\CodeBase), 'lib/OpenCloud/D...')
#15 /home/jim/projects/phan/src/phan.php(34): Phan\Phan::analyzeFileList(Object(Phan\CodeBase), Object(Closure))
#16 /home/jim/projects/phan/phan(2): require_once('/home/jim/proje...')
#17 {main}

steps to reproduce:
git clone git@github.com:rackspace/php-opencloud.git && cd php-opencloud && composer install --no-dev && phan --init
phan

phan version:

• Phan 2.4.4
• Phan 2.4.5-dev

[TysonAndre]

A minimal example that reproduces this:

<?php

/**
 * @return \\@Test
 */
function test() {
}

[TysonAndre]

exclude_file_list and exclude_file_regex can be used to mitigate this, but a fix should be out by the end of the week.