A combination of Cast and Slice leads to AccessViolationException #674
Description
Describe the bug
The following code throws System.AccessViolationException:
int height = 720;
int width = 1280;
byte[] storage = new byte[width * height * sizeof(int)];
Memory2D<int> data = storage
.AsMemory()
.Cast<byte, int>()
.AsMemory2D(height: height, width: width);
Memory2D<int> slice = data.Slice(
row: height / 2,
column: 0,
height: height / 2,
width: width);
int total = 0;
foreach (int v in slice.Span)
{
total += v;
}Regression
No response
Steps to reproduce
Create a project targeting net7.0, paste the above code into the `Main` method, run it.
Expected behavior
The code is supposed to calculate a sum of all values in the slice (in this case, 0).
Screenshots
IDE and version
VS 2022
IDE version
17.4.4
Nuget packages
- CommunityToolkit.Common
- CommunityToolkit.Diagnostics
- CommunityToolkit.HighPerformance
- CommunityToolkit.Mvvm (aka MVVM Toolkit)
Nuget package version(s)
8.2.0
Additional context
The problem disappears when there's no Cast() (so, we are summing over a Span of bytes). It also disappears when there's no Slice() (so, we are summing over data instead of slice).
Help us help you
No, just wanted to report this