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[Runtime async] Generic virtual method test failing on CoreCLR #127197

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#129442
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[Runtime async] Generic virtual method test failing on CoreCLR#127197
#129442
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area-VM-coreclrruntime-async

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@eduardo-vp
eduardo-vp
opened on Apr 21, 2026
12:19:46.881 Running test: _covariant_return_covariant_returns::GenericVirtualMethod.Program.TestGenericVirtualMethod()
ASSERT FAILED
	Expression: !pPrimaryMD->IsReturnDroppingThunk()
	Location:   /__w/1/s/src/coreclr/vm/method.hpp:1724
	Function:   FindOrCreateAssociatedMethodDesc

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  1. eduardo-vp
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    runtime-async
    on Apr 21, 2026
  2. dotnet-policy-service
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    untriagedNew issue has not been triaged by the area owner
    on Apr 21, 2026
  3. github-actions
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    area-VM-coreclr
    on Apr 21, 2026
  4. github-project-automation
    added this to AppModelon Apr 21, 2026
  5. eduardo-vp
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    on Apr 21, 2026

  6. dotnet-policy-service commented on Apr 21, 2026

    @dotnet-policy-service
    dotnet-policy-servicebot
    on Apr 21, 2026 – with Dotnet Policy Service
    Contributor

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  7. VSadov
    assigned
    VSadov
    and
    Copilot
    on Jun 15, 2026
  8. Copilot
    linked a pull request that will close this issueAdd AsyncVariantLookup::ReturnDroppingThunk for parallel RDT lookup in FindOrCreateAssociatedMethodDesc #129442on Jun 15, 2026
  9. Copilot
    added a commit that references this issue on Jun 16, 2026

    Fix GVM dispatch for async covariant-return methods (closes #127197)

    e7083d2
  10. VSadov
    closed this as completedin #129442on Jul 3, 2026
  11. VSadov
    added a commit that references this issue on Jul 3, 2026

    Add AsyncVariantLookup::ReturnDroppingThunk for parallel RDT lookup i…

    d972fb1
  12. eiriktsarpalis
    added a commit that references this issue on Jul 15, 2026

    Add AsyncVariantLookup::ReturnDroppingThunk for parallel RDT lookup i…

    c0cb2b5
  13. github-actions
    locked and limited conversation to collaborators on Aug 3, 2026
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