Open
Description
Description
I'm not sure whether this a general issue, but if you declare a fixed float array in a structure, while the runtime behavior is correct, it shows incorrect values in the VS debugger.
Via https://twitter.com/neuecc/status/1643807528986513409
Reproduction Steps
Code snippet
var v = new Vec3(10.1f, 999.9f, 42.3f);
Console.WriteLine(v); // <-- breakpoint here
unsafe struct Vec3
{
public fixed float mF32[4];
public Vec3(float x, float y, float z)
{
mF32[0] = x;
mF32[1] = y;
mF32[2] = z;
}
public float X => mF32[0];
public float Y => mF32[1];
public float Z => mF32[2];
/// <inheritdoc />
public override string ToString()
=> $"{X}, {Y}, {Z}";
}Expected behavior
Console output
10.1, 999.9, 42.3
If I set up breakpoint on the WriteLine statement, I should see v is {10.1, 999.9, 42.3} in "Locals" / "Watch" window.
Actual behavior
Console output (correct)
10.1, 999.9, 42.3
"Locals" window
"Watch" window
Interestingly, the values of v.Y and v.Z are shown correctly only if it's directly added to the "Watch" window.
Regression?
Seems not a regression. It reproduces on .NET Framework 4.8.
Known Workarounds
Referencing the expressions v.Y & v.Z directly in the "Watch" window yields the correct value.
Configuration
- .NET SDK 6.0.14 / 8.0.0-alpha.1.23080.2
- Any CPU (x64 runtime)
- Visual Studio 17.6.0 Preview 2.0
Other information
No response