System.InvalidOperationException: Sequence contains more than one matching element

[NikitaEgorov]

Microsoft (R) .NET Portability Analyzer 2.5.0.0
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Detecting assembly references [Done]

An unknown error occured.
System.InvalidOperationException: Sequence contains more than one matching element
at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable1 source, Func2 predicate)
at Microsoft.Fx.Portability.ApiPortClient.GenerateRequest(IApiPortOptions options, IDependencyInfo dependencyInfo)
at Microsoft.Fx.Portability.ApiPortClient.d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Fx.Portability.ApiPortClient.d__13.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at ApiPortVS.Analyze.ApiPortVsAnalyzer.d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at ApiPortVS.Analyze.ProjectAnalyzer.d__10.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at ApiPortVS.AnalyzeMenu.d__7.MoveNext()

[twsouthwick]

Thanks for the report. Is the input you used available for us to debug with? If anything, the commandline args you used are needed for repro.

[conniey]

@NikitaEgorov Can you give a list of all the assembly names you are submitting for analysis?

It seems to be choking on ApiPortClient.cs: L273

foreach (var assembly in dependencyInfo.UserAssemblies)
{
    // Windows's file paths are case-insensitive
    var matchingAssembly = options.InputAssemblies.SingleOrDefault(x => x.Key.Name.Equals(assembly.Location, StringComparison.OrdinalIgnoreCase));

...
}

@twsouthwick Should we comparing more than just the input assembly Name (ie. x.Key.Name)? And compare that the version is the same as well?

[twsouthwick]

We should look at the whole name, but also handle the duplicate case correctly

[conniey]

@twsouthwick What should we do in the duplicate case? Choose the first one?

[NikitaEgorov]

I use VS2007 Extension.
Extension does not showing list of assemblies