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Do not cache isGeneric() or the class PHPDoc while the class name scope is created - #6726
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ondrejmirtes merged 1 commit intoOct 24, 2026
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…pe is created A template bound that names the class itself (@template T of Error|ErrorIterator) leads FileTypeMapper::getNameScope() back to ClassReflection::isGeneric() for the same class, through TypeCombinator::union() and ObjectType::getEnumCases(). The template tags are not resolved yet at that moment, so isGeneric() cached false, and getResolvedPhpDoc() cached a PHPDoc without template tags. Both stayed wrong for the rest of the process. FileTypeMapper now tracks the classes whose name scope is being created, and ClassReflection does not cache these two values while its class is in that set. The same change is made in turbo-ext/src/ClassReflection.cpp.
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Closes phpstan/phpstan#15448
A template bound that names the class itself (
@template T of Error|ErrorIterator) leadsFileTypeMapper::getNameScope()back toClassReflection::isGeneric()for the same class, throughTypeCombinator::union()andObjectType::getEnumCases(). The template tags are not resolved yet at that moment, soisGeneric()cachedfalse, andgetResolvedPhpDoc()cached a PHPDoc without template tags. Both stayed wrong for the rest of the process.FileTypeMappernow tracks the classes whose name scope is being created.ClassReflectiondoes not cache these two values while its class is in that set. The same change is made inturbo-ext/src/ClassReflection.cpp.Tests: the two new cases in
WrongVariableNameInVarTagRuleTestfail before the fix: class declared in the analysed file, and class only used from it. The full suite passes with and without the extension.make phpstan,make cs, and the turbo smoke test, signature parity and side-by-side pass.testBug10049: one more error, a missing type onSimpleEntity. It comes from how PHPStan approximates@template SELF of SimpleEntity<SELF>, a bound that refers to its own template: the result isSimpleEntity<SimpleEntity>, and the innerSimpleEntityhas no type. The wrong cache hid it before.Performance: no slowdown. Symfony 8.2
src/, cold cache, before and after in alternating order, 4 to 5 runs each (the first run after a container start is left out), same 2,113 errors in every run:phpbench: +1.0% total time, smaller than the noise between two runs of the same code (+1.9%).
I do not know C++. Claude (AI) wrote the turbo change, and I could not review it. It was checked with: the regression tests failing with the unmodified extension and passing with the new one, the full suite with the extension loaded, the smoke test, signature parity, side-by-side, and the Symfony runs above.
🤖 AI-written description.