Incorrect disassembly with unsafe code (pointers)

RickBrewster

I have some simple methods that follow a pattern like this:

(original C# code)

using RectDouble = PaintDotNet.Rendering.RectDouble;
using Rect = System.Windows.Rect;
public static unsafe RectDouble FromRect(Rect rect)
{
    return *((RectDouble*)&rect);
}

And they show up like this in .NET Reflector:

public static unsafe RectDouble FromRect(Rect rect)
{
    return (RectDouble) ((IntPtr) &rect);
}

This C# code doesn't even work -- it's definitely not some kind of syntactic-sugary equivalent

Here's the IL that Reflector shows me too:

.method public hidebysig static valuetype [PaintDotNet.Base]PaintDotNet.Rendering.RectDouble FromRect(valuetype [WindowsBase]System.Windows.Rect rect) cil managed
{
    .maxstack 8
    L_0000: ldarga.s rect
    L_0002: conv.u
    L_0003: ldobj [PaintDotNet.Base]PaintDotNet.Rendering.RectDouble
    L_0008: ret
}

Both Rect and RectDouble are structs with the same layout of { double x; double y; double width; double height; }. You can see RectDouble by disassabling PaintDotNet.Base.dll in the latest release of Paint.NET.

Jessica R

Thanks very much for your post and apologies for this issue with .NET Reflector! I've gone ahead and added the details you've provided to the bug, RP-1881.

RickBrewster

Thanks