Catastrophic error: **Internal compiler error: internal abort**

Hi,

I have attached source for a simple program that returns an Internal Compiler Error with XE 12.1.0.233 [Intel(R) 64]  due to  Line 310: HelloWorld3Ret = HelloWorld3(HelloWorld3Input). Comment this out, and build is fine. I am using this with Visual Studio 2010. I am trying to implement a callback function, internal to the main program, that calls procedure inside a C DLL that was loaded in the main program. I thought that scope of variables in the main program extended to internal functions such as the one I have? My understanding may be incorrect here, but with the Compiler Error, I am a little stuck. I am unable to attach the DLL, but could send it to you if that helps. 

I would appreciate your help here. Thanks!