Yeah, that obscure message is normal. You could move the string outside a function, then you won't get it. Or you can add this to near the top of your code:
// this blathering on is in case you want to make the class a static variable in a function
extern "C" {
__extension__ typedef int __guard __attribute__((mode (__DI__)));
int __cxa_guard_acquire(__guard *g) { return !*(char *)(g); };
void __cxa_guard_release (__guard *g) { *(char *)g = 1; };
void __cxa_guard_abort (__guard *) { };
} // end extern "C"