Open
Description
Since installing .NET 9, I have come across a bug in production where setting <LangVersion>preview</LangVersion> results in certain LINQ queries causing an InvalidOperationException. This did not happen with .NET 9 RC2, however now that I've installed the .NET 9.0.100 SDK it always occurs even if I roll back EF Core.
Minimal repro:
Project.csproj
<Project Sdk="Microsoft.NET.Sdk.Web">
<PropertyGroup>
<TargetFramework>net9.0</TargetFramework>
<LangVersion>preview</LangVersion> <!-- NO EXCEPTION IF THIS LINE IS REMOVED -->
<ImplicitUsings>enable</ImplicitUsings>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="9.0.0" />
</ItemGroup>
</Project>Program.cs
using Microsoft.EntityFrameworkCore;
var ctx = new BloggingContext();
ctx.Database.EnsureCreated();
var list = Array.Empty<int>();
var query = ctx.Blogs.Where(b => list.Contains(b.Id)).ToQueryString(); // <-- THROWS InvalidOperationException
public class BloggingContext : DbContext
{
public DbSet<Blog> Blogs { get; set; }
protected override void OnConfiguring(DbContextOptionsBuilder options)
{
options.UseSqlite("DataSource=file::memory:?cache=shared");
options.LogTo(Console.WriteLine);
options.EnableSensitiveDataLogging();
}
}
public class Blog
{
public int Id { get; set; }
}Exception
System.InvalidOperationException: 'An exception was thrown while attempting to evaluate the LINQ query parameter expression 'op_Implicit(value(Program+<>c__DisplayClass0_0).list)'. See the inner exception for more information.'
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.<Evaluate>g__EvaluateCore|70_0(Expression expression, String& parameterName, Boolean& isContextAccessor)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.Evaluate(Expression expression, String& parameterName, Boolean& isContextAccessor)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.ProcessEvaluatableRoot(Expression evaluatableRoot, State& state, Boolean forceEvaluation)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.EvaluateList(IReadOnlyList`1 expressions, State[] expressionStates, List`1& children, Func`2 pathFromParentGenerator)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.VisitMethodCall(MethodCallExpression methodCall)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.Visit(Expression expression, State& state)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.VisitLambda[T](Expression`1 lambda)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.Visit(Expression expression, State& state)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.VisitUnary(UnaryExpression unary)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.Visit(Expression expression)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.Visit[T](ReadOnlyCollection`1 expressions, Func`2 elementVisitor, StateType& aggregateStateType, State[]& expressionStates, Boolean poolExpressionStates)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.Visit(ReadOnlyCollection`1 expressions, StateType& aggregateStateType, State[]& expressionStates, Boolean poolExpressionStates)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.VisitMethodCall(MethodCallExpression methodCall)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.Visit(Expression expression, State& state)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.ExtractParameters(Expression expression, IParameterValues parameterValues, Boolean parameterize, Boolean clearParameterizedValues, Boolean precompiledQuery, IReadOnlySet`1& nonNullableReferenceTypeParameters)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.ExtractParameters(Expression expression, IParameterValues parameterValues, Boolean parameterize, Boolean clearParameterizedValues)
at Microsoft.EntityFrameworkCore.Query.Internal.QueryCompiler.ExtractParameters(Expression query, IParameterValues parameterValues, IDiagnosticsLogger`1 logger, Boolean compiledQuery, Boolean generateContextAccessors)
at Microsoft.EntityFrameworkCore.Query.Internal.QueryCompiler.ExecuteCore[TResult](Expression query, Boolean async, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.Query.Internal.QueryCompiler.Execute[TResult](Expression query)
at Microsoft.EntityFrameworkCore.Query.Internal.EntityQueryProvider.Execute[TResult](Expression expression)
at Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.ToQueryString(IQueryable source)
at Program.<Main>$(String[] args) in D:\Projects\EFCoreDemo\Program.cs:line 6
Inner Exception
GenericArguments[1], 'System.Span`1[System.Int32]', on 'System.Linq.Expressions.Interpreter.FuncCallInstruction`2[T0,TRet]' violates the constraint of type 'TRet'.
at System.RuntimeType.ValidateGenericArguments(MemberInfo definition, RuntimeType[] genericArguments, Exception e)
at System.RuntimeType.MakeGenericType(Type[] instantiation)
at System.Linq.Expressions.Interpreter.CallInstruction.GetHelperType(MethodInfo info, Type[] arrTypes)
at System.Linq.Expressions.Interpreter.CallInstruction.SlowCreate(MethodInfo info, ParameterInfo[] pis)
at System.Linq.Expressions.Interpreter.CallInstruction.Create(MethodInfo info, ParameterInfo[] parameters)
at System.Linq.Expressions.Interpreter.LightCompiler.CompileMethodCallExpression(Expression object, MethodInfo method, IArgumentProvider arguments)
at System.Linq.Expressions.Interpreter.LightCompiler.Compile(Expression expr)
at System.Linq.Expressions.Interpreter.LightCompiler.CompileConvertUnaryExpression(Expression expr)
at System.Linq.Expressions.Interpreter.LightCompiler.Compile(Expression expr)
at System.Linq.Expressions.Interpreter.LightCompiler.CompileTop(LambdaExpression node)
at System.Linq.Expressions.Expression`1.Compile(Boolean preferInterpretation)
at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.<Evaluate>g__EvaluateCore|70_0(Expression expression, String& parameterName, Boolean& isContextAccessor)
Version
EF Core version: 9.0.0
Database provider: Microsoft.EntityFrameworkCore.Sqlite
Target framework: .NET 9.0
Operating system: Windows 11
IDE: Visual Studio 2022 17.13 Preview 1
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment