My code provokes an internal error in phpstan #12949
Description
Bug report
Running phpstan 2.1.13 at level 0, with PHP 8.3.6 on Ubuntu 24.04 on a code base, I receive the following:
Internal error: PHPStan\Rules\Variables\DefinedVariableRule::processSingleVariable(): Argument #3 ($variableName) must be of type string, int given, called in
phar:///…/phpstan.phar/src/Rules/Variables/DefinedVariableRule.php on line 48 while analysing file ….php
Post the following stack trace to https://github.com/phpstan/phpstan/issues/new?template=Bug_report.yaml:
So here is the stack trace:
## phar:///…/phpstan.phar/src/Rules/Variables/DefinedVariableRule.php(55)
#0 phar:///…/phpstan.phar/src/Rules/Variables/DefinedVariableRule.php(48): PHPStan\Rules\Variables\DefinedVariableRule->processSingleVariable()
#1 phar:///…/phpstan.phar/src/Analyser/FileAnalyser.php(108): PHPStan\Rules\Variables\DefinedVariableRule->processNode()
#2 phar:///…/phpstan.phar/src/Analyser/NodeScopeResolver.php(767): PHPStan\Analyser\FileAnalyser->PHPStan\Analyser\{closure}()
#3 phar:///…/phpstan.phar/src/Analyser/NodeScopeResolver.php(4003): PHPStan\Analyser\NodeScopeResolver::PHPStan\Analyser\{closure}()
#4 phar:///…/phpstan.phar/src/Analyser/NodeScopeResolver.php(1937): PHPStan\Analyser\NodeScopeResolver->processAssignVar()
#5 phar:///…/phpstan.phar/src/Analyser/NodeScopeResolver.php(766): PHPStan\Analyser\NodeScopeResolver->processExprNode()
#6 phar:///…/phpstan.phar/src/Analyser/NodeScopeResolver.php(468): PHPStan\Analyser\NodeScopeResolver->processStmtNode()
#7 phar:///…/phpstan.phar/src/Analyser/NodeScopeResolver.php(900): PHPStan\Analyser\NodeScopeResolver->processStmtNodes()
#8 phar:///…/phpstan.phar/src/Analyser/NodeScopeResolver.php(468): PHPStan\Analyser\NodeScopeResolver->processStmtNode()
#9 phar:///…/phpstan.phar/src/Analyser/NodeScopeResolver.php(796): PHPStan\Analyser\NodeScopeResolver->processStmtNodes()
#10 phar:///…/phpstan.phar/src/Analyser/NodeScopeResolver.php(416): PHPStan\Analyser\NodeScopeResolver->processStmtNode()
#11 phar:///…/phpstan.phar/src/Analyser/FileAnalyser.php(175): PHPStan\Analyser\NodeScopeResolver->processNodes()
#12 phar:///…/phpstan.phar/src/Command/WorkerCommand.php(136): PHPStan\Analyser\FileAnalyser->analyseFile()
#13 phar:///…/phpstan.phar/vendor/evenement/evenement/src/EventEmitterTrait.php(111): PHPStan\Command\WorkerCommand::PHPStan\Command\{closure}()
#14 phar:///…/phpstan.phar/vendor/clue/ndjson-react/src/Decoder.php(117): _PHPStan_95d365e52\Evenement\EventEmitter->emit()
#15 phar:///…/phpstan.phar/vendor/evenement/evenement/src/EventEmitterTrait.php(111): _PHPStan_95d365e52\Clue\React\NDJson\Decoder->handleData()
#16 phar:///…/phpstan.phar/vendor/react/stream/src/Util.php(62): _PHPStan_95d365e52\Evenement\EventEmitter->emit()
#17 phar:///…/phpstan.phar/vendor/evenement/evenement/src/EventEmitterTrait.php(111): _PHPStan_95d365e52\React\Stream\Util::_PHPStan_95d365e52\React\Stream\{closure}()
#18 phar:///…/phpstan.phar/vendor/react/stream/src/DuplexResourceStream.php(168): _PHPStan_95d365e52\Evenement\EventEmitter->emit()
#19 phar:///…/phpstan.phar/vendor/react/event-loop/src/StreamSelectLoop.php(201): _PHPStan_95d365e52\React\Stream\DuplexResourceStream->handleData()
#20 phar:///…/phpstan.phar/vendor/react/event-loop/src/StreamSelectLoop.php(173): _PHPStan_95d365e52\React\EventLoop\StreamSelectLoop->waitForStreamActivity()
#21 phar:///…/phpstan.phar/src/Command/WorkerCommand.php(96): _PHPStan_95d365e52\React\EventLoop\StreamSelectLoop->run()
#22 phar:///…/phpstan.phar/vendor/symfony/console/Command/Command.php(259): PHPStan\Command\WorkerCommand->execute()
#23 phar:///…/phpstan.phar/vendor/symfony/console/Application.php(870): _PHPStan_95d365e52\Symfony\Component\Console\Command\Command->run()
#24 phar:///…/phpstan.phar/vendor/symfony/console/Application.php(261): _PHPStan_95d365e52\Symfony\Component\Console\Application->doRunCommand()
#25 phar:///…/phpstan.phar/vendor/symfony/console/Application.php(157): _PHPStan_95d365e52\Symfony\Component\Console\Application->doRun()
#26 phar:///…/phpstan.phar/bin/phpstan(114): _PHPStan_95d365e52\Symfony\Component\Console\Application->run()
#27 phar:///…/phpstan.phar/bin/phpstan(115): _PHPStan_95d365e52\{closure}()
#28 /…/phpstan.phar(6): require('...')
#29 {main}
(I've obfuscated local paths by replacing them with ….)
There's quite possibly something very wrong with the code base (although, superficially, it's running fine), since it has just undergone some major refactoring... An internal phpstan error is still unexpected though.
Code snippet that reproduces the problem
No response
Expected output
phpstan tells me that all sorts of things are wrong with my code.
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Hopefully phpstan will help me as soon as it stops erroring out.