Description

Array implements IStructuralEquatable, but its Equals implementation throws if a multi-dimensional array is passed.

Reproduction Steps

var arr1 = new int[2,2]; var arr2 = new int[2,2]; Console.WriteLine(typeof(IStructuralEquatable).IsAssignableFrom(arr1.GetType())); // True Console.WriteLine(StructuralComparisons.StructuralEqualityComparer.Equals(arr1, arr2)); // throws

Expected behavior

The method is expected to return true or false.

Actual behavior

Exception:

Unhandled exception. System.ArgumentException: Array was not a one-dimensional array. at System.Array.GetValue(Int32 index) at System.Array.System.Collections.IStructuralEquatable.Equals(Object other, IEqualityComparer comparer) at System.Collections.StructuralEqualityComparer.Equals(Object x, Object y) at Program.<Main>$(String[] args) in /home/roji/projects/test/Program.cs:line 20 

Regression?

No response

Known Workarounds

One can avoid using IStructuralEquatable or StructuralComparisons.StructuralEqualityComparer specifically for multidimensional arrays.

Configuration

.NET 6, Ubuntu impish, x64.

Other information

No response