Why C++ Sucks. Part 3472.

Every now and again you hear someone complaining about the difficulty
of parsing C++. You will probably also have heard that templates are Turing
complete. The two statements are of course linked; the following code
is valid C++, but will never compile.

#include

int main ()
{
  std::cout << Forever<1>::value << "\n";
}

g++ bails out at the 500th recursion with the error message:

forever.cpp:9: error: template instantiation depth exceeds maximum of
500 (use -ftemplate-depth-NN to increase the maximum) instantiating
'struct Forever<501u>'

I’ve omitted the five-hundred line long trace back through the
other templates.