Repository navigation
Assertion failed 'OperIs(GT_LCL_VAR, GT_LCL_FLD, GT_PHI_ARG, GT_STORE_LCL_VAR, GT_STORE_LCL_FLD, GT_LCL_ADDR)' during 'Forward Substitution' #134829
Description
Build Information
Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1613477
Build error leg or test failing: System.Text.RegularExpressions.Tests.WorkItemExecution
Error Detail
Assert failure(PID 4216 [0x00001078], Thread: 3500 [0x0dac]): Assertion failed 'OperIs(GT_LCL_VAR, GT_LCL_FLD, GT_PHI_ARG, GT_STORE_LCL_VAR, GT_STORE_LCL_FLD, GT_LCL_ADDR)' in 'Microsoft.CodeAnalysis.CSharp.Binder:BindArgumentAndName(Microsoft.CodeAnalysis.CSharp.AnalyzedArguments,Microsoft.CodeAnalysis.CSharp.BindingDiagnosticBag,byref,byref,Microsoft.CodeAnalysis.CSharp.Syntax.ArgumentSyntax,bool,bool):this' during 'Forward Substitution' (IL size 192; hash 0xed432ab5; FullOpts)
File: D:\a\_work\1\s\src\coreclr\jit\gtstructs.h:65
Image: C:\h\w\A7430941\p\dotnet.exe
----- end Sat 09/26/2026 18:52:26.53 ----- exit code -1073740286 ----------------------------------------------------------
Error Message
Fill the error message using step by step known issues guidance.
{
"ErrorMessage": "Failed test: System.Text.RegularExpressions.Tests.WorkItemExecution",
"BuildRetry": false,
"ExcludeConsoleLog": false
}Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1613477
Error message validated: [Failed test: System.Text.RegularExpressions.Tests.WorkItemExecution]
Result validation: ❌ Known issue did not match with the provided build.
Validation performed at: 9/29/2026 1:26:34 AM UTC
Report
Summary
| 24-Hour Hit Count | 7-Day Hit Count | 1-Month Count |
|---|---|---|
| 0 | 0 | 0 |
Activity
dotnet-policy-service commentedon Sep 29, 2026
Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.
jakobbotsch commentedon Sep 29, 2026
Duplicate of #134818
JIT - Fix 'OperIs...' assert during forward substitution (#134962)