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[ci-scan] Test failure: JIT assert 'block->HasFlag(BBF_RECURSIVE_TAILCALL)' during Morph - Inlining under PGO stress #133352
Description
Build Information
Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584422
Build error leg or test failing: libraries-pgo linux-x64/arm64/windows-x64 Release - ComInterfaceGenerator.Unit.Tests / Microsoft.CSharp.Tests (exit code 134, SIGABRT)
Error Details
Assert failure(PID 6544 [0x00001990], Thread: 6604 [0x19cc]): Assertion failed 'block->HasFlag(BBF_RECURSIVE_TAILCALL)' in 'Microsoft.CodeAnalysis.CSharp.Symbols.MethodSymbol:get_HasSetsRequiredMembers():bool:this' during 'Morph - Inlining' (IL size 18; hash 0xb524cb42; Tier1)
./RunTests.sh: line 177: 6544 Aborted (core dumped)
exit code 134 means SIGABRT Abort.
The same JIT assertion reproduces across multiple work items and legs (ComInterfaceGenerator.Unit.Tests, Microsoft.CSharp.Tests) with differing inlinee methods, and recurs in the follow-up build 1584906. The invariant is the checked-JIT assertion 'block->HasFlag(BBF_RECURSIVE_TAILCALL)' firing during 'Morph - Inlining' under PGO stress.
Error Message
{
"ErrorMessage": "Assertion failed 'block->HasFlag(BBF_RECURSIVE_TAILCALL)'",
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}Agentic workflow metadata (ci-failure-scan)
Workflow artifact: ci-failure-scan
Artifact kind: kbe-verification
Verified match count: matched across ComInterfaceGenerator.Unit.Tests and Microsoft.CSharp.Tests console logs in source build 1584422 and follow-up build 1584906
Generated by CI Outer-Loop Failure Scanner · opus48 · 876.4 AIC · ⌖ 11.5 AIC · ⊞ 20.7K · ◷
Report
Summary
| 24-Hour Hit Count | 7-Day Hit Count | 1-Month Count |
|---|---|---|
| 0 | 0 | 0 |
Activity
dotnet-policy-service commentedon Sep 8, 2026
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JIT: preserve recursive tail call flag during inlining (#133434)