dotnet/roslyn
Wrong error message for Task.Run with invalid argument
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#10 672 ouverte le 19 avr. 2016
Area-CompilersConcept-Diagnostic ClarityInvestigatinghelp wanted
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Description
Version Used: VS 2015 U2
Steps to Reproduce:
Write the following erroneous C# statement:
Task.Run(() => { }, TaskCreationOptions.LongRunning);
Expected Behavior:
A reasonable error, probably:
CS1503 Argument 2: cannot convert from 'System.Threading.Tasks.TaskCreationOptions' to 'System.Threading.CancellationToken'
Actual Behavior:
Incorrect error message:
CS1643: Not all code paths return a value in lambda expression of type 'Func'
This is possibly related to #8603.