>Полное сообщение об ошибке в студию, please.
>Поскольку:
>
>$
>$ cat test.cpp
>#include <string>
>#include <map>
>#include <vector>
>#include <stdio.h>
>#include <stdlib.h>
>
>using namespace std;
>
>struct attr {
>bool in;
>size_t doc;
>};
>
>int main()
>{
>  typedef map <string, attr> FV;
>  typedef vector <FV> docs;
>
>  docs Docs;
>  for( docs::iterator p = Docs.begin(); p != Docs.end(); ++p)
>    /*noop*/;
>  return 0;
>}
>$
>$ g++ test.cpp -lstdc++
>$
>$ uname -a
>Linux white 2.6.19.3 #1 Wed Feb 14 16:57:20 MSK 2007 i686 GNU/Linux
>
>$
>$ g++ -v
>Using built-in specs.
>Target: i486-linux-gnu
>Configured with: ../src/configure -v --enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls
>--program-suffix=-4.1 --enable-__cxa_atexit --enable-clocale=gnu --enable-libstdcxx-debug --enable-mpfr --with-tune=i686 --enable-checking=release i486-linux-gnu
>Thread model: posix
>gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
>$

всем спасибо,
вопрос закрыт, исправил
похоже что я чего то накосячил вот видимо поэтому и лезла такая ошибка

error: conversion from ‘__gnu_cxx::__normal_iterator<const std::map<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, NB::attr, std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<const std::basic_string<char, std::char_traits<char>, std::allocator<char> >, NB::attr> > >*, std::vector<std::map<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, NB::attr, std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<const std::basic_string<char, std::char_traits<char>, std::allocator<char> >, NB::attr> > >, std::allocator<std::map<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, NB::attr, std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<const std::basic_string<char, std::char_traits<char>, std::allocator<char> >, NB::attr> > > > > >’ to non-scalar type ‘__gnu_cxx::__normal_iterator<std::map<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, NB::attr, std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<const std::basic_string<char, std::char_traits<char>, std::allocator<char> >, NB::attr> > >*, std::vector<std::map<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, NB::attr, std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<const std::basic_string<char, std::char_traits<char>, std::allocator<char> >, NB::attr> > >, std::allocator<std::map<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, NB::attr, std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<const std::basic_string<char, std::char_traits<char>, std::allocator<char> >, NB::attr> > > > > >’ requested