Description:
Attached code attempts to pass a structure that contains a float[] array to native code. The il2cpp generated code contains marshaling code that copies the array by value. As a result, the side effects are not observable by managed code. if the struct is passed by reference, the changed array is copied back from native to managed code, but is not correct.

Reproduction steps:
1. Open the attached project.
2. Build and run the "main" scene for iOS.
- It performs the calls and displays the results.

Expected result:
- All three text fields should read "10, 11, 12, 13, 14".

Actual result:
- The second text field exhibits struct by value behavior (unobservable side effects).
- The third text field exhibits struct by reference behavior (incorrect unmarshaling).

Reproduced with:
5.5.3p2, 2017.1.0b3