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Wasm R2R test failure: GenericVirtualMethod.Program.TestGenericVirtualMethod #134660
Description
Build Information
Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1612334
Build error leg or test failing: coreclr Pri0 Runtime Tests Run R2R_CG2 browser wasm checked - async/GenericVirtualMethod.Program.TestGenericVirtualMethod
Pull request: #134643
Error Details
Running test: _covariant_return_covariant_returns::GenericVirtualMethod.Program.TestGenericVirtualMethod()
ASSERT FAILED
Expression: numGenericArgs > 0
Location: /__w/1/s/src/coreclr/vm/prestub.cpp:3482
Function: ProcessDynamicDictionaryLookup
Frame (InterpreterFrame):
0) Derived::IL_STUB_InstantiatingStub
1) Mid::InstanceMethod
2) Mid::IL_STUB_InstantiatingStub
Error Message
{
"ErrorMessage": "Expression: numGenericArgs > 0",
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}Note
This issue was generated by GitHub Copilot from CI failure evidence.
Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1612334
Error message validated: [Expression: numGenericArgs > 0]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 9/25/2026 4:01:02 PM UTC
Report
| Build | Repository | Test | Pull Request |
|---|---|---|---|
| 1612334 | dotnet/runtime | async.WorkItemExecution | #134643 |
Summary
| 24-Hour Hit Count | 7-Day Hit Count | 1-Month Count |
|---|---|---|
| 0 | 1 | 1 |
Activity
dotnet-policy-service commentedon Sep 25, 2026
Tagging subscribers to 'arch-wasm': @lewing, @pavelsavara
See info in area-owners.md if you want to be subscribed.
Disable generic virtual async test on Wasm R2R
dotnet-policy-service commentedon Sep 25, 2026
Tagging subscribers to this area: @agocke
See info in area-owners.md if you want to be subscribed.
[-][ci-scan] Test failure: GenericVirtualMethod.Program.TestGenericVirtualMethod[/-][+]Wasm R2R test failure: GenericVirtualMethod.Program.TestGenericVirtualMethod[/+]MihuBot commentedon Sep 25, 2026
I'm a bot. Here is a possible related and/or duplicate issue (I may be wrong):
[wasm][R2R] Fix generic context / async continuation order in Wasm in…