If I set in compiler options compiler logging to full command line and try to compile this (erroneous program):
#include <iostream>
#include <typeinfo>
#include "Demangle.h"
using namespace std;
template<class... Types>
struct X
{
};
template<class A,class B,class... Types>
struct X<A,B,Types...>
{
typedef A type;
typedef X<B,Types...> next;
A head;
};
//template<class A,class... Types>
//struct X<A,Types...>
//{
// typedef A type;
// typedef X<Types...> next;
// A head;
//
//};
template<class B>
struct X<B>
{
B head;
typedef B type;
typedef B next;
};
template<int index, class Sequence>
struct get
{
typedef typename get<index - 1,typename Sequence::next>::type type;
};
template<class Sequence>
struct get<0,Sequence>
{
typedef typename Sequence::type type;
};
int main()
{
typedef X<int,double,char> x;
//cout << demangle(x.get_head());
cout << demangle(typename get<3,x>::type());
return 0;
}
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp|40| recursively instantiated from 'get<2, X<double, char> >'|
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp:40|71|instantiated from 'get<3, X<int, double, char> >'|
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp:54|40|instantiated from here|
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp|46|error: 'char' is not a class, struct, or union type|
||=== Build finished: 2 errors, 0 warnings (0 minutes, 0 seconds) ===|
Build started on: 26-10-2011 at 10:24.35
Build ended on: 26-10-2011 at 10:24.36
-------------- Build: Debug in Meta_Sequence ---------------
g++ -Wall -fexceptions -g -Wshadow -Winit-self -Wredundant-decls -Wcast-align -Wundef -Wfloat-equal -Winline -Wunreachable-code -Wmissing-declarations -Wmissing-include-dirs -Wswitch-enum -Wswitch-default -Weffc++ -Wmain -pedantic-errors -pedantic -std=c++0x -Wfatal-errors -Wextra -Wall -g -ID:\Libraries\boost_1_47_0\boost_1_47_0 -ID:\Libraries\Art_lib -Id:\Excersizes\metaprogramming_excersizes\Meta_Sequence -Id:\Excersizes\metaprogramming_excersizes\Meta_Sequence -c d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp -o obj\Debug\main.o
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp: In instantiation of 'get<0, char>':
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp:40:71: recursively instantiated from 'get<2, X >'
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp:40:71: instantiated from 'get<3, X >'
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp:54:40: instantiated from here
d:\Excersizes\metaprogramming_excersizes\Meta_Sequence\main.cpp:46:37: error: 'char' is not a class, struct, or union type
compilation terminated due to -Wfatal-errors.
Process terminated with status 1 (0 minutes, 0 seconds)
2 errors, 0 warnings (0 minutes, 0 seconds)