Ошибка в C ++ list :: sort

Получено множество ошибок, и они очень загадочные.

Вот весь соответствующий код:

// list::sort
#include <iostream>
#include <list>
#include <string>
#include <cctype>
#include "main.h"

using namespace std;

struct texture
{
    int texture;
    int ref;
};

bool compare_nocase (texture first, texture second)
{
    if(first.texture < second.texture)
    {
        return true;
    }
    else
    {
        return false;
    }
}

int main ()
{
  list<texture> mylist;
  list<texture>::iterator it;

  texture moose;
  moose.ref = 3;
  moose.texture = 6;

  texture moose2;
  moose2.ref = 1;
  moose2.texture = 3;

  texture moose3;
  moose3.ref = 2;
  moose3.texture = 14;

  mylist.push_back (moose);
  mylist.push_back (moose2);
  mylist.push_back (moose3);

  cout << "before sort mylist contains:";
  for (it=mylist.begin(); it!=mylist.end(); ++it)
      cout << it->texture << endl;
  cout << endl;


  mylist.sort(compare_nocase);

  cout << "after sort mylist contains:";
  for (it=mylist.begin(); it!=mylist.end(); ++it)
    cout << it->texture << endl;
  cout << endl;

  return 0;
}

Я просто тестирую функцию сортировки STL, но получаю ошибки:

c:\users\spaniel\documents\visual studio 2010\projects\list\list\main.cpp(12): error C2380: type(s) preceding 'texture' (constructor with return type, or illegal redefinition of current class-name?)
1>c:\users\spaniel\documents\visual studio 2010\projects\list\list\main.cpp(18): error C2274: 'function-style cast' : illegal as right side of '.' operator
1>c:\users\spaniel\documents\visual studio 2010\projects\list\list\main.cpp(18): error C2274: 'function-style cast' : illegal as right side of '.' operator
1>c:\users\spaniel\documents\visual studio 2010\projects\list\list\main.cpp(35): error C2274: 'function-style cast' : illegal as right side of '.' operator
1>c:\users\spaniel\documents\visual studio 2010\projects\list\list\main.cpp(39): error C2274: 'function-style cast' : illegal as right side of '.' operator
1>c:\users\spaniel\documents\visual studio 2010\projects\list\list\main.cpp(43): error C2274: 'function-style cast' : illegal as right side of '.' operator
1>c:\users\spaniel\documents\visual studio 2010\projects\list\list\main.cpp(51): error C2273: 'function-style cast' : illegal as right side of '->' operator
1>c:\users\spaniel\documents\visual studio 2010\projects\list\list\main.cpp(59): error C2273: 'function-style cast' : illegal as right side of '->' operator