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Differentiate MethodTables that are/aren't visible to reflection #112782

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Fixes #112029

@Copilot Copilot bot review requested due to automatic review settings February 21, 2025 11:34
@MichalStrehovsky MichalStrehovsky marked this pull request as draft February 21, 2025 11:35
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Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Comments suppressed due to low confidence (2)

src/coreclr/tools/aot/ILCompiler.Compiler/Compiler/DependencyAnalysis/GenericDefinitionEETypeNode.cs:67

  • Confirm that using the 'Marked' property on the constructed type symbol is the correct indicator to decide whether to skip emitting the object node for reflection-invisible generic definitions. An incorrect check here may result in the wrong emission state.
return factory.ConstructedTypeSymbol(_type).Marked;

src/coreclr/tools/aot/ILCompiler.Compiler/Compiler/DependencyAnalysis/EETypeNode.cs:1138

  • Ensure that comparing 'this' with factory.MaximallyConstructableType(_type) reliably distinguishes between using a constructed versus necessary type symbol. An unexpected outcome here could lead to incorrect dependency emission.
IEETypeNode typeDefNode = factory.MaximallyConstructableType(_type) == this ?

@@ -591,7 +591,7 @@ private IEETypeNode CreateNecessaryTypeNode(TypeDesc type)
{
if (type.IsGenericDefinition)
{
return new GenericDefinitionEETypeNode(this, type);
return new ReflectionInvisibleGenericDefinitionEETypeNode(this, type);
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Review whether treating all generic definitions as reflection invisible on the necessary type path is intentional. This change could inadvertently hide types intended for reflection, so ensure it aligns with downstream requirements.

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/azp run runtime-nativeaot-outerloop

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Azure Pipelines successfully started running 1 pipeline(s).

@MichalStrehovsky
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/azp run runtime-nativeaot-outerloop

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Azure Pipelines successfully started running 1 pipeline(s).

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Successfully merging this pull request may close these issues.

ILC fails to detect and trim some dependency cycles (interface -> attribute -> [DAM] -> type impl -> new())
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