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fix infinite cycle due to incorrect implements/extends #2483

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schlndh
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@schlndh schlndh commented Jun 23, 2023

This is an attempt to fix an infinite cycle on code like this (playground won't let me share the link, presumably because phpstan crashes):

<?php

/** @extends FooCollection<object> */
class FooCollection extends SplObjectStorage
{
}

Here is a shortened stack-trace that I generated from the test with src/ changes stashed:

...
 /phpstan-src/src/Reflection/ClassReflection.php:1534
 /phpstan-src/src/Type/ObjectType.php:801
 /phpstan-src/src/Type/ObjectType.php:921
 /phpstan-src/src/Type/IterableType.php:166
 /phpstan-src/src/Type/ObjectType.php:329
 /phpstan-src/src/Type/TypeCombinator.php:997
 /phpstan-src/src/PhpDoc/TypeNodeResolver.php:844
 /phpstan-src/src/PhpDoc/TypeNodeResolver.php:161
 /phpstan-src/src/PhpDoc/PhpDocNodeResolver.php:209
 /phpstan-src/src/PhpDoc/ResolvedPhpDocBlock.php:428
 /phpstan-src/src/Reflection/ClassReflection.php:1459
 /phpstan-src/src/Reflection/ClassReflection.php:1444
 /phpstan-src/src/Reflection/ClassReflection.php:201
 /phpstan-src/src/Reflection/ClassReflection.php:813
 /phpstan-src/src/Reflection/ClassReflection.php:766
 /phpstan-src/src/Reflection/ClassReflection.php:1504
 /phpstan-src/src/Reflection/ClassReflection.php:1534
 /phpstan-src/src/Type/ObjectType.php:801
 /phpstan-src/src/Type/ObjectType.php:921
 /phpstan-src/src/Type/IterableType.php:166
 /phpstan-src/src/Type/ObjectType.php:329
 /phpstan-src/src/Type/TypeCombinator.php:997
 /phpstan-src/src/PhpDoc/TypeNodeResolver.php:844
 /phpstan-src/src/PhpDoc/TypeNodeResolver.php:161
 /phpstan-src/src/PhpDoc/PhpDocNodeResolver.php:209
 /phpstan-src/src/PhpDoc/ResolvedPhpDocBlock.php:428
 /phpstan-src/src/Reflection/ClassReflection.php:1459
 /phpstan-src/src/Reflection/ClassReflection.php:1444
 /phpstan-src/src/Reflection/ClassReflection.php:201
 /phpstan-src/src/Reflection/ClassReflection.php:813
 /phpstan-src/src/Reflection/ClassReflection.php:766
 /phpstan-src/src/Dependency/DependencyResolver.php:462
 /phpstan-src/src/Dependency/DependencyResolver.php:49
 /phpstan-src/src/Analyser/FileAnalyser.php:158
 /phpstan-src/src/Analyser/NodeScopeResolver.php:396
 /phpstan-src/src/Analyser/NodeScopeResolver.php:294
 /phpstan-src/src/Analyser/NodeScopeResolver.php:653
 /phpstan-src/src/Analyser/NodeScopeResolver.php:252
 /phpstan-src/src/Analyser/FileAnalyser.php:176
 /phpstan-src/src/Analyser/Analyser.php:66
 /phpstan-src/src/Testing/RuleTestCase.php:165
 /phpstan-src/src/Testing/RuleTestCase.php:129
 /phpstan-src/tests/PHPStan/Rules/Generics/ClassAncestorsRuleTest.php:30

I briefly tried the other phpdocs (e.g. @use, @mixin, ...) to see if they have a similar issue, but I wasn't able to find a case where they'd cause an infinite cycle.

@ondrejmirtes ondrejmirtes force-pushed the fix-infiniteCycleWithInvalidExtendsImplements branch from da47230 to 3a916d4 Compare September 29, 2023 12:10
@ondrejmirtes ondrejmirtes merged commit e05fb9f into phpstan:1.10.x Sep 29, 2023
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Thank you!

@schlndh schlndh deleted the fix-infiniteCycleWithInvalidExtendsImplements branch September 29, 2023 12:51
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