9.0.1 does not work on the simplest query

[masherak]

Bug description

Today I updated to 9.0.1, and a query like _context.Orders.AsNoTracking().ToListAsync() throws a null reference exception. This must be a system bug. After downgrading to 9.0.0, everything works fine.

Your code

_context.Orders.AsNoTracking().ToListAsync()

Stack traces

System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.ProcessEvaluatableRoot(Expression evaluatableRoot, State& state, Boolean forceEvaluation)
   at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.<VisitUnary>g__EvaluateOperand|51_0(UnaryExpression unary, Expression operand, State operandState)
   at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.ProcessEvaluatableRoot(Expression evaluatableRoot, State& state, Boolean forceEvaluation)
   at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.VisitBinary(BinaryExpression binary)
   at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.VisitBinary(BinaryExpression binary)
   at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.VisitLambda[T](Expression`1 lambda)
   at Microsoft.EntityFrameworkCore.Query.Internal.ExpressionTreeFuncletizer.VisitUnary(UnaryExpression unary)
   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.VisitMethodCall(MethodCallExpression methodCall)
   at Microsoft.EntityFrameworkCore.Query.Internal.QueryCompiler.ExecuteCore[TResult](Expression query, Boolean async, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.ExecuteAsync[TSource,TResult](MethodInfo operatorMethodInfo, IQueryable`1 source, Expression expression, CancellationToken cancellationToken)

Verbose output

EF Core version

9.0.1

Database provider

No response

Target framework

No response

Operating system

Linux

IDE

No response

[AndriySvyryd]

Make sure that you've updated all packages to 9.0.1
Can you provide your .csproj file for us to investigate?

[masherak]

@AndriySvyryd

[AndriySvyryd]

I am still unable to repro this issue. Please provide a small runnable project that shows it.

[cincuranet]

No repro was provided (yet). Closing. Will reopen if repro is provided.

[masherak]

Still problem on 9.0.2, the code that worked from .NET 5 to .NET 9 suddenly doesn’t work in version 9.0.1 or 9.0.2, which I find strange.

[roji]

@masherak as we've posted above, we need a minimal repro.