Answer by elipszilon for Generate the longest error message in C++

A file named a.cpp. Code:

main(){#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"#include "a.cpp"}

This is a fork bomb where n=40.