Shared variables with nested lambdas returning incorrect values #437
Description
I found an issue with variables that are shared across lambdas.
In the test below I would assume myVar would be 3 after it's assigned inside the lambda, but instead this returns 5. Not sure if this should be throwing NotSupportedExpressionException similar to: ParameterIsNotVariableNorInPassedParameters
[Test]
public void Nested_lambda_with_shared_variable()
{
var myVar = Variable( typeof( int ), "myVar" );
Expression<Action<Action>> invokeParamLambda = ( lambda ) => lambda();
var withNestedLambda = Lambda<Func<int>>(
Block(
[myVar],
Assign( myVar, Constant( 5 ) ),
Invoke( invokeParamLambda,
Lambda<Action>( Assign( myVar, Constant( 3 ) ) )
),
myVar
)
);
var compileLambda = withNestedLambda.Compile();
var result = compileLambda(); // returns 3
var fastCompileLambda = withNestedLambda.CompileFast( false, CompilerFlags.ThrowOnNotSupportedExpression );
var fastResult = fastCompileLambda(); // returns 5
Assert.AreEqual( result, fastResult );
}
Thanks for the great library!