Crashing in il2cpp_image_get_name in marshaling on macOS .NET 8.0

[slick1015]

After PR #220 I am crashing on calls to il2cpp_image_get_name. The runtime is calling free() on the returned pointer, which is invalid because all pointers returned by il2cpp_image_get_name are pointers into the middle of global-metadata.dat. This is in a .NET 8.0 runtime. I believe this is because marshaling is expecting that when a char* is returned and marshaled to a string it was heap/malloc() allocated and needs to be freed after being converted into a managed string.

I think all of the string related marshaling in IL2CPP.cs should be reconsidered since the il2cpp_* API is generally not returning heap/malloc() allocated strings.

[ds5678]

Maybe we can do a custom string marshaling class?

[return: MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(Il2CppStringMarshaler))]

[ds5678]

I think this was resolved by #228.

[ds5678]

Please reopen this issue if it was not resolved.