"csc.exe" exited with code -2146232797. using Version 5.0.100-preview.8.20417.9
#47164
Assignees
Labels
Area-Compilers
Bug
New Language Feature - Pattern Matching
Pattern Matching
Tenet-Reliability
Customer telemetry indicates that the product is failing in a crash/hang/dataloss manner.
Milestone
Comments
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Had the same issue with SDK Seems like using System;
namespace preview_8_console
{
public class Animal { }
public class Cat : Animal { }
public class Dog : Animal
{
public bool IsFunny { get; set; }
public int? JokesCount { get; set; }
}
public class Program
{
public static void Main(string[] args)
{
Console.WriteLine(Pattern(new Dog()));
}
private static string Pattern(Dog dog)
=> dog switch
{
{ IsFunny: false } when dog.JokesCount == null => "this is a regular dog",
{ IsFunny: false } when dog.JokesCount > 0 => "this is a dog with wierd jokes",
{ IsFunny: true } => "this is a funny dog"
};
}
}Seems like problem with @gafter changes inside SwitchExpressionBinder.cs. |
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@vladshestel Thank you for tracking the issue down! |
gafter
added
Area-Compilers
Bug
New Language Feature - Pattern Matching
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@RikkiGibson @jcouv Here is another crash in recent pattern-matching changes. I suspect this does not affect 16.7. |
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@gafter It affects Visual Studio Preview 2019 Version 16.7.2 -- that is the version I used to compile the mentioned code with. |
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It is assumed to mean the latest 16.7 patch release, currently 16.7.2. It is surprising that 16.7.1 could present a different behavior than 16.7.2 here--we don't believe that any compiler changes related to this area went in between those releases. |
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In the meantime, is it possible to target an older .NET5 preview without having to re-install Visual Studio to an older version? |
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You can override the version of the compiler that gets used for builds by following these instructions: https://github.com/dotnet/roslyn/blob/master/docs/compilers/Compiler%20Toolset%20NuPkgs.md |
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@RikkiGibson Thanks a lot!! Interestingly enough, I now get a lot of ... though I doubt that it is relevant to the current issue at hand. |
gafter
pushed a commit
to gafter/roslyn
that referenced
this issue
Sep 3, 2020
…xit of a decision dag in the face of multiple when clauses, for the purpose of constructing the "not exhaustive" diagnostic. Fixes dotnet#47164
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The issue still exists in |
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@Unknown6656 Yes, that's likely. RC1 predates this fix. |
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@jcouv: Oh ok, I did not know that. Thanks ^^ |
@RikkiGibson I tested it again with the NuGet Release
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net5</TargetFramework>
<LangVersion>latest</LangVersion>
[...]
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.Net.Compilers.Toolset" Version="3.8.0-3.final">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
</PackageReference>
</ItemGroup>
[...]Error: |
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Try using a nightly preview4 build such as https://dev.azure.com/dnceng/public/_packaging?_a=package&feed=dotnet-tools&package=Microsoft.Net.Compilers.Toolset&protocolType=NuGet&version=3.8.0-4.20472.6&view=overview |
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@RikkiGibson : THanks a lot! You just saved my day! |
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So when i try to compile a script with <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Scripting" Version="3.9.0-5.final" />var income = 900m;
var res = income switch
{
< 9876 => 0 + (0.10m * (income - 0m)),
< 40126 => 987.5m + (0.12m * (income - 9875m)),
< 85126 => 4617.5m + (0.22m * (income - 40125m)),
< 163301 => 14605.5m + (0.24m * (income - 85252m)),
< 207351 => 33271.5m + (0.32m * (income - 163300m)),
< 518401 => 47367.5m + (0.35m * (income - 207350m)),
_ => 156235m + (0.37m * (income - 518400m))
};
Console.WriteLine($"Owned: {res}");I get While executing this line: var compileResult = await compilation.GetAllDiagnosticsAsync(); |
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Cross Posted in: #49529 (comment) |
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Version Used:
Steps to Reproduce:
This may be reproducable by cloning https://github.com/Unknown6656/Unknown6656.Core and trying to build the project
/Unknown6656.Core/Unknown6656.Core.csprojusing the .NET Core SDK version 5.0.100-preview.8.20417.9Expected Behavior:
No crash of
csc.exe(at least, it did not crash on version 5.0.100-preview.7.20366.6)Actual Behavior:
(I'm so sorry for the wall of text)
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