Example Circular Include Failure

buildlog

$ g++ -c -o Foo.o Foo.cpp
Foo.cpp:3:1: error: redefinition of `Foo::Foo()'
 Foo::Foo()
 ^
In file included from Foo.h:11:0,
                 from Foo.cpp:1:
Foo.cpp:3:1: note: `Foo::Foo()' previously defined here
 Foo::Foo()
 ^
Foo.cpp: In function `void member()':
Foo.cpp:6:6: error: redefinition of `void member()'
 void member()
      ^
In file included from Foo.h:11:0,
                 from Foo.cpp:1:
Foo.cpp:6:6: note: `void member()' previously defined here
 void member()
      ^
$ g++ -c -o main.o main.cpp
$ g++ main.cpp Foo.cpp -o main

Foo.cpp:3:1: error: redefinition of `Foo::Foo()'
 Foo::Foo()
 ^
In file included from Foo.h:11:0,
                 from Foo.cpp:1:
Foo.cpp:3:1: note: `Foo::Foo()' previously defined here
 Foo::Foo()
 ^
Foo.cpp: In function `void member()':
Foo.cpp:6:6: error: redefinition of `void member()'
 void member()
      ^
In file included from Foo.h:11:0,
                 from Foo.cpp:1:
Foo.cpp:6:6: note: `void member()' previously defined here
 void member()
      ^

Foo.cpp

#include "Foo.h"

Foo::Foo()
{
}
void member()
{
}

Foo.h

#ifndef FOO_H
#define FOO_H

class Foo
{
public:
	Foo();
	void member();
};

#include "Foo.cpp"

#endif

main.cpp

#include "Foo.h"

int main()
{
	Foo f;
	f.member();
	return 0;
}