# System.Runtime.CompilerServices

``` diff
 namespace System.Runtime.CompilerServices {
+    [AttributeUsageAttribute(AttributeTargets.Struct, AllowMultiple=false)]
+    [EditorBrowsableAttribute(EditorBrowsableState.Never)]
+    public sealed class InlineArrayAttribute : Attribute {
+        public InlineArrayAttribute(int length);
+        public int Length { get; }
+    }
     public static class Unsafe {
+        public static TTo BitCast<TFrom, TTo>(TFrom source) where TFrom : struct where TTo : struct;
     }
 }
```

