Double class declaration when generating Composer autoload files due to the PHP polyfills in version 1.10.52

[oliverklee]

Bug report

https://github.com/oliverklee/ext-seminars/actions/runs/7421448150/job/20194829356?pr=2883

Using PHPStan 1.10.52 together with the symfony/polyfill-php80 package (in version 1.28.0) introduces a second declaration of the class Symfony\Polyfill\Php80\Php80, which breaks the generation of the autoload files during composer install:

Generating autoload files
PHP Fatal error:  Cannot declare class Symfony\Polyfill\Php80\Php80, because the name is already in use in phar:///home/runner/work/ext-seminars/ext-seminars/.Build/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/polyfill-php80/Php80.php on line 21

Code snippet that reproduces the problem

No response

Expected output

No error during autoload file generation

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[mergeable]

This bug report is missing a link to reproduction at phpstan.org/try.

It will most likely be closed after manual review.

[localheinz]

I can confirm a similar problem.

Running

composer show | grep phpstan

yields

phpstan/phpdoc-parser                    1.25.0    PHPDoc parser with support for nullable, intersection and generic types
phpstan/phpstan                          1.10.52   PHPStan - PHP Static Analysis Tool

and running

composer show | grep polyfill

yields

symfony/polyfill-ctype                   v1.28.0   Symfony polyfill for ctype functions
symfony/polyfill-intl-grapheme           v1.28.0   Symfony polyfill for intl's grapheme_* functions
symfony/polyfill-intl-normalizer         v1.28.0   Symfony polyfill for intl's Normalizer class and related functions
symfony/polyfill-mbstring                v1.28.0   Symfony polyfill for the Mbstring extension
symfony/polyfill-php73                   v1.28.0   Symfony polyfill backporting some PHP 7.3+ features to lower PHP versions
symfony/polyfill-php80                   v1.28.0   Symfony polyfill backporting some PHP 8.0+ features to lower PHP versions
symfony/polyfill-php81                   v1.28.0   Symfony polyfill backporting some PHP 8.1+ features to lower PHP versions

Attempting to run tests with phpunit/phpunit, using vendor/autoload.php as bootstrapper, results in

vendor/bin/phpunit --configuration=test/Unit/phpunit.xml
PHPUnit 9.6.15 by Sebastian Bergmann and contributors.

Runtime:       PHP 7.4.33
Configuration: test/Unit/phpunit.xml
Random Seed:   1704457481

PHP Fatal error:  Cannot declare class Symfony\Polyfill\Php81\Php81, because the name is already in use in phar:///Users/am/Sites/ergebnis/rector-rules/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/polyfill-php81/Php81.php on line 19

Fatal error: Cannot declare class Symfony\Polyfill\Php81\Php81, because the name is already in use in phar:///Users/am/Sites/ergebnis/rector-rules/vendor/phpstan/phpstan/phpstan.phar/vendor/symfony/polyfill-php81/Php81.php on line 19

For reference, see https://github.com/ergebnis/rector-rules/actions/runs/7421738763/job/20195703344.

[ondrejmirtes]

Please verify that https://github.com/phpstan/phpstan/releases/tag/1.10.53 fixes this for you.

[oliverklee]

Yes, version 1.10.53 fixes this for me. Thanks for the quick fix and release, @ondrejmirtes! ❤️

[github-actions]

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