Last week, I was wrapping some C++ code for a customer and I was surprised that my code did not work properly. I'm not a C++ programmer and thus this error might have been a typical gotcha but still this was a very surprising behavior.

The code in question was:

<c>void my_routine (CppClass my_obj, int buffer_count, char * buffer) { const char * l_cstr = my_obj->getName().c_str();

Per Module C Global Variables

If we write a C header file for a Eiffel application (not for Eiffel runtime), there are C variables in C header file which we use for interactive with Eiffel language. We should take care about the global C variables. They are not application level global variables if they are included several times. Note static C global variables of the same case.