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RSRP-469296: Wrong "Possible System.InvalidOperationException" in Linq with Anonymous Type

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Reporter Alexander Korolev (a_korolev) Alexander Korolev (a_korolev)
Created Apr 17, 2018 5:33:54 PM
Updated Apr 17, 2018 5:47:09 PM
Subsystem Code Analysis
Assignee Ivan Serduk (IvanSerduk)
Priority Critical
State Submitted
Type Bug
Fix version 2018.2
Affected versions 2018.1
Fixed In Version ReSharper Undefined
VsVersion All Versions
Wrong inspection in Linq query on second Select of anonymous type. In First Select inspection works correctly.
Sample code:
using System;
using System.Collections.Generic;
using System.Linq;

namespace Test
{
class Program
{
static void Main()
{
var tmp = GetQueryable()
.Select(e => new
{
// Here has no inspection Warnings
A1 = e.A != null ? UseValue(e.A.Value) : 100500
})
.Select(x => new
{
// Here has inspection warning "Possible System.InvalidOperationException"
// VVVVVVVVVV
A2 = x.A1 != null ? UseValue(x.A1.Value) : 100500
});
Console.WriteLine(tmp.Count());
}

static int? UseValue(int value)
{
return value;
}

private class TestData
{
public int? A { get; set; }
}

static IEnumerable<TestData> GetQueryable()
{
return null;
}
}
}

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