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[DI] Infinite loop in PhpDumper::analyzeCircularReferences() #25101

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@ogizanagi

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@ogizanagi
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Q A
Bug report? yes
Feature request? no
BC Break report? no
RFC? no
Symfony version 3.4.0-RC1

Trying to upgrade to the 3.4.0-RC1 version on an app, I'm getting a:

Allowed memory size of [...] in /vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php on line 369

The issue is an infinite loop in PhpDumper::analyzeCircularReferences(), introduced in #25055.

See ogizanagi/symfony-standard@13ec437 for a reproducer, which worked fine with 3.4.0-BETA4, or if there is only one nelmio_alice.faker.provider tagged service.

By dumping the $currentPath var, I infinitely get:

array:7 [
  "nelmio_alice.generator.caller" => "nelmio_alice.generator.caller"
  "nelmio_alice.generator.caller.simple" => "nelmio_alice.generator.caller.simple"
  "nelmio_alice.generator.resolver.value.registry" => "nelmio_alice.generator.resolver.value.registry"
  "nelmio_alice.generator.resolver.value.chainable.function_argument_resolver" => "nelmio_alice.generator.resolver.value.chainable.function_argument_resolver"
  "nelmio_alice.generator.resolver.value.chainable.php_value_resolver" => "nelmio_alice.generator.resolver.value.chainable.php_value_resolver"
  "nelmio_alice.generator.resolver.value.chainable.faker_value_resolver" => "nelmio_alice.generator.resolver.value.chainable.faker_value_resolver"
  "nelmio_alice.faker.generator" => "nelmio_alice.faker.generator"
]
array:6 [
  "nelmio_alice.generator.caller" => "nelmio_alice.generator.caller"
  "nelmio_alice.generator.caller.simple" => "nelmio_alice.generator.caller.simple"
  "nelmio_alice.generator.resolver.value.registry" => "nelmio_alice.generator.resolver.value.registry"
  "nelmio_alice.generator.resolver.value.chainable.function_argument_resolver" => "nelmio_alice.generator.resolver.value.chainable.function_argument_resolver"
  "nelmio_alice.generator.resolver.value.chainable.php_value_resolver" => "nelmio_alice.generator.resolver.value.chainable.php_value_resolver"
  "nelmio_alice.generator.resolver.value.chainable.faker_value_resolver" => "nelmio_alice.generator.resolver.value.chainable.faker_value_resolver"
]

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