[ci-scan] Test failure: StructureToPtrTests.StructureToPtr_ByValDateArray_Success on tvos-arm64 #127952

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1413202
Build error leg or test failing: tvos-arm64 Release AllSubsets_CoreCLR - System.Runtime.InteropServices.Tests

Error Message

{
  "ErrorMessage": "type argument 'System.StubHelpers.DateMarshaler' violates the constraint of type parameter 'TMarshaler'",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Additional Context

Summary: StructureToPtrTests.StructureToPtr_ByValDateArray_Success fails on tvos-arm64 with a System.Security.VerificationException indicating a generic type constraint violation in the marshaling stub helpers.

Failed in (2+):

• runtime-extra-platforms 1413202 (2026-05-08)
• runtime-extra-platforms 1406427 (2026-05-03)

Console Log: tvos-arm64 Console Log

Failed tests:

runtime-extra-platforms (tvos-arm64 Release AllSubsets_CoreCLR)
- osx.15.amd64.appletv.open
  - System.Runtime.InteropServices.Tests.StructureToPtrTests.StructureToPtr_ByValDateArray_Success

Error Message:

[FAIL] System.Runtime.InteropServices.Tests.StructureToPtrTests.StructureToPtr_ByValDateArray_Success
System.Security.VerificationException : Method System.StubHelpers.StubHelpers.FreeArrayContents: type argument 'System.StubHelpers.DateMarshaler' violates the constraint of type parameter 'TMarshaler'.

Stack Trace:

at System.StubHelpers.StructureMarshaler`1.Free(T& managed, Byte* unmanaged, CleanupWorkListElement& cleanupWorkList)
at System.StubHelpers.BoxedLayoutTypeMarshaler`1.Free(Object managed, Byte* unmanaged, CleanupWorkListElement& cleanupWorkList)
at System.Runtime.InteropServices.Marshal.DestroyStructure(IntPtr ptr, Type structuretype)
at System.Runtime.InteropServices.Tests.StructureToPtrTests.StructureToPtr_ByValDateArray_Success()

Impact on platforms:

• runtime-extra-platforms + tvos-arm64 + osx.15.amd64.appletv.open + exit code 1

First build it occurred: First confirmed in build 1406427 (2026-05-03) within the scanned window. Note: this is within the scanned window and may not be the true origin.

Recommended action: The generic type constraint violation in StubHelpers.FreeArrayContents for DateMarshaler suggests a marshaling code-generation issue specific to tvos-arm64 (possibly related to NativeAOT or interpreter paths on Apple TV). This needs investigation by the interop/marshaling area owners. The test should be annotated with [ActiveIssue] for tvOS until the root cause is fixed.

Generated by CI Outer-Loop Failure Scanner · ● 26.1M · ◷

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