IL2CPP produces invalid code when using the bracket operator ([]) on fixed arrays or pointers.

Example 1:
unsafe struct FixedArray { public fixed int array[2]; }
(new FixedArray()).array[1].ToString(); // error

Example 2:
struct Data { public int x; }
fixed (Data* p = new Data[2]) { p[1].x = 0; } // error

Note that there is no problem when accessing the first element. This issue reproduces only when accessing the second and subsequent elements.