########################################
# nested.h
########################################

#pragma once

static inline void function()
{
	class Nested
	{
		Nested(){
		}
		~Nested()
		{}
	};
}

########################################
# first_source.cpp
########################################

#include "nested.h"

void first_caller()
{
	function();
}

########################################
# second_source.cpp
########################################

#include "nested.h"

void second_caller()
{
	function();
}

########################################
# output
########################################

1>------ Build started: Project: NestedTest, Configuration: Debug Win32 ------
1>Compiling...
1>first_source.cpp
1>second_source.cpp
1>Generating Code...
1>Linking...
1>second_source.obj : error LNK2005: "private: __thiscall `void __cdecl function(void)'::`2'::Nested::Nested(void)" (??0Nested@?1??function@@YAXXZ@AAE@XZ) already defined in first_source.obj
1>second_source.obj : error LNK2005: "private: __thiscall `void __cdecl function(void)'::`2'::Nested::~Nested(void)" (??1Nested@?1??function@@YAXXZ@AAE@XZ) already defined in first_source.obj
1>C:\Users\Administrator\Desktop\NestedTest\Debug\NestedTest.dll : fatal error LNK1169: one or more multiply defined symbols found
1>Build log was saved at "file://c:\Users\Administrator\Desktop\NestedTest\NestedTest\Debug\BuildLog.htm"
1>NestedTest - 3 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========