CreateVirtualEntity: Attempted to read or write protected memory

[Nils van Lück]

Server Version: alt:V RC 3
Nuget: alt:V RC 6

The server crashes with this exception when i try to create a virtual entity:

Fatal error. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at AltV.Net.Core.CreateVirtualEntity(AltV.Net.Elements.Entities.IVirtualEntityGroup, AltV.Net.Data.Position, UInt32, System.Collections.Generic.Dictionary`2<System.String,System.Object>)
   at AltV.Net.Alt.CreateVirtualEntity(AltV.Net.Elements.Entities.IVirtualEntityGroup, AltV.Net.Data.Position, UInt32, System.Collections.Generic.Dictionary`2<System.String,System.Object>)
   at PlusOne.Script.Fire.FireSystem.CreateFire(AltV.Net.Data.Position, Boolean, Int32, Int32)
   at System.RuntimeMethodHandle.InvokeMethod(System.Object, Void**, System.Signature, Boolean)
   at System.Reflection.MethodInvoker.Invoke(System.Object, IntPtr*, System.Reflection.BindingFlags)
   at System.Reflection.RuntimeMethodInfo.Invoke(System.Object, System.Reflection.BindingFlags, System.Reflection.Binder, System.Object[], System.Globalization.CultureInfo)
   at System.Delegate.DynamicInvokeImpl(System.Object[])
   at AltV.Net.Function.Call(AltV.Net.Elements.Args.MValueConst[])
   at AltV.Net.Core.OnServerEvent(System.String, IntPtr[])
   at AltV.Net.ModuleWrapper.OnServerEvent(System.String, IntPtr, UInt64)

C# Code:

 var entity =
            Alt.CreateVirtualEntity(FireGroup, position, 200, (Dictionary<string, object>) fireData.ToDictionary());
        entity.Dimension = DimensionOffsetService.Get(DimensionOffsetEnum.Default);

Variable dump:

FireGroup: AsyncVirtualEntityGroup (not null)
Position:  (0, 0, 0) as Position
fireData: Dictionary with different values (not null)

[Till Schreiber]

Cannot repo it

        var group = Alt.CreateVirtualEntityGroup(29);

        var data = new Dictionary<string, object>();
        data.Add("test", "test");

        var entity = Alt.CreateVirtualEntity(group, new Position(0, 0, 0), 200, data);

[Nils van Lück]

I checked it. The error only appears if the dictionary contains a null value. This was possible in v14 and now a crash occurs.

Example:

var group = Alt.CreateVirtualEntityGroup(29);

var data = new Dictionary<string, object>();
data.Add("test", null);

var entity = Alt.CreateVirtualEntity(group, new Position(0, 0, 0), 200, data);

[Till Schreiber]

Its fixed!