Ran out of trampolines of type 2 - iOS

Unity Engine
,
1

When running our game on iOS (have tested both on iPhone 3G and iPhone 4) we are getting a consistent crash with the following error:

Ran out of trampolines of type 2 in ‘/private/var/mobile/Applications//.app/Data/Managed/mscorlib.dll’ (128)

The crash is not linked to any specific line of code as rearranging the code causes the crash after a certain number of operations occur, not the operations themselves.

The best answer I can find is here stating: I need to add this to the arguments for monotouch “-aot “nimt-trampolines=2048””. However I can’t pass this argument when using Unity can I?

2

I just received a reply from Unity:

“This is a known problem with Generics. In the next release of Unity we will expose the aot options in the player settings that will allow you to change that parameter.”

3

what are trampolines and how best to avoid this issue? what were you doing? I have to ship now, I cannot way till the future, so how best to avoid it?

4

It looks to be related to heavy C# Generics use. Some people get it from using LINQ, we just have a complex codebase that makes heavy use of generic classes, interfaces, etc. I’ve asked for an ETA on the fix, I’ll post if I get one.

PM me your email if you’d like to talk in more detail.

5

Hello there. I have the same problem but I don’t use LINQ or complex generic code. Is there concrete reason of this exception? I have many interfaces in my project. May it be reason? And could anybody explain me what are trampolines and how they used by aot compiler? Thanks

6

See http://answers.unity3d.com/questions/64909/ran-out-of-trampolines-of-type-2-ios.html

I have solved it using

Player Settings > Other Settings and set the AOT option to nimt-trampolines=512 (or perhaps more)