If either of these errors occur, it indicates a catastrophic failure of the CodeGear tools. You should contact CodeGear to report the problem and to find a potential work around for your specific case. By isolating the test case as well as possible, you will increase the chance for either CodeGear or yourself to find a work around for the problem. 

Commonly, compiler failures can be worked around by moving the source code that is currently being compiled. Simple cases might be switching the order of variable declarations, or functions within the source module. Moving the scope and storage of variables also helps in many cases. 

For linker failures, you can reduce the amount of debugging information that the linker has to work with. Try compiling only one or two modules with debug information instead of an entire project.  

Similarly, switching the order in which object modules are handed to the linker can work around the problem. The IDE hands objects to the linker in the order that they are listed in the project tree. Try moving a source up or down in the list.