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Latest PowerShell build from main crashes on property completion #25205

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#25206
Closed
Latest PowerShell build from main crashes on property completion#25205
#25206
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In-PRIndicates that a PR is out for the issueIndicates that a PR is out for the issueIssue-BugIssue has been identified as a bug in the productIssue has been identified as a bug in the productWG-Interactive-IntelliSensetab completiontab completion
@kborowinski

Description

@kborowinski
kborowinski
opened on Mar 20, 2025
Issue body actions

Prerequisites

Steps to reproduce

Tab complete following line:

$x = Get-Random; $x = $x.Where{$_.

Expected behavior

Should not crash.

Actual behavior

PowerShell process abruptly terminates.

Partial call-stack

   at System.Management.Automation.TypeInferenceVisitor.GetExpressionType(System.Management.Automation.Language.ExpressionAst, Boolean)
   at System.Management.Automation.TypeInferenceVisitor.InferTypesFrom(System.Management.Automation.Language.MemberExpressionAst)
   at System.Management.Automation.TypeInferenceVisitor.InferTypeFrom(System.Management.Automation.Language.VariableExpressionAst, System.Collections.Generic.List`1<System.Management.Automation.PSTypeName>)
   at System.Management.Automation.TypeInferenceVisitor.System.Management.Automation.Language.ICustomAstVisitor.VisitVariableExpression(System.Management.Automation.Language.VariableExpressionAst)
   at System.Management.Automation.TypeInferenceVisitor.InferTypeFrom(System.Management.Automation.Language.VariableExpressionAst, System.Collections.Generic.List`1<System.Management.Automation.PSTypeName>)
   at System.Management.Automation.TypeInferenceVisitor.System.Management.Automation.Language.ICustomAstVisitor.VisitVariableExpression(System.Management.Automation.Language.VariableExpressionAst)
   at System.Management.Automation.AstTypeInference.InferTypeOf(System.Management.Automation.Language.Ast, System.Management.Automation.TypeInferenceContext, System.Management.Automation.TypeInferenceRuntimePermissions)
   at System.Management.Automation.CompletionCompleters.CompleteMember(System.Management.Automation.CompletionContext, Boolean, Int32 ByRef)
   at System.Management.Automation.CompletionAnalysis.GetResultHelper(System.Management.Automation.CompletionContext, Int32 ByRef, Int32 ByRef)
   at System.Management.Automation.CompletionAnalysis.GetResults(System.Management.Automation.PowerShell, Int32 ByRef, Int32 ByRef)
   at System.Management.Automation.CommandCompletion.CompleteInputImpl(System.Management.Automation.Language.Ast, System.Management.Automation.Language.Token[], System.Management.Automation.Language.IScriptPosition, System.Collections.Hashtable)
   at DynamicClass.CallSite.Target(System.Runtime.CompilerServices.Closure, System.Runtime.CompilerServices.CallSite, System.Type, System.String, Int32, System.Collections.Hashtable)
   at System.Dynamic.UpdateDelegates.UpdateAndExecute4[[System.__Canon, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.Int32, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]](System.Runtime.CompilerServices.CallSite, System.__Canon, System.__Canon, Int32, System.__Canon)
   at System.Management.Automation.Interpreter.DynamicInstruction`5[[System.__Canon, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.Int32, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.Interpreter.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.LightLambda.RunVoid1[[System.__Canon, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]](System.__Canon)
   at System.Management.Automation.PSScriptCmdlet.RunClause(System.Action`1<System.Management.Automation.Language.FunctionContext>, System.Object, System.Object)
   at System.Management.Automation.CommandProcessorBase.Complete()
   at System.Management.Automation.CommandProcessorBase.DoComplete()
   at System.Management.Automation.Internal.PipelineProcessor.DoCompleteCore(System.Management.Automation.CommandProcessorBase)
   at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(System.Object)
   at System.Management.Automation.Runspaces.LocalPipeline.InvokeHelper()
   at System.Management.Automation.Runspaces.LocalPipeline.InvokeThreadProc()
   at System.Management.Automation.Runspaces.PipelineThread.WorkerProc()
   at System.Threading.Thread+StartHelper.RunWorker()
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)

Environment data

Name                           Value
----                           -----
PSVersion                      7.6.0-preview.3
PSEdition                      Core
GitCommitId                    7.6.0-preview.3-50-geef334de1b0f648512859bd032356f9c8df7cb91
OS                             Microsoft Windows 10.0.19045
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

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    In-PRIndicates that a PR is out for the issueIndicates that a PR is out for the issueIssue-BugIssue has been identified as a bug in the productIssue has been identified as a bug in the productWG-Interactive-IntelliSensetab completiontab completion

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