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2014/06/17

cpp2011//14.6.1 Locally declared names

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// 1 filename:cpp2011-14-6-1.cpp
// ver 0.1 June.15, 2014
//
// 2 original examples and/or notes:
// (c) ISO/IEC JTC1 SC22 WG21 N3242, April 12, 2011
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf
// >14 Templates 14.6 Name resolution 14.6.1 Locally declared names
// (c) Dr. OGAWA Kiyoshi, kaizen at gifu-u.ac.jp,
//
// 4 compile errors and/or warnings:
// 4.1(c) Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
// Target: x86_64-apple-darwin13.2.0,  Thread model: posix
// Command/Options: c++ -std=c++11 -stdlib=libc++ -Wall cpp2011-14-6-1.cpp
// (c) LLVM 2003-2009 University of Illinois at Urbana-Champaign.

// 4.2. g++-4.9 (GCC) 4.9.0 20131229 (experimental)
// Copyright (C) 2013 Free Software Foundation, Inc.
// This is free software; see the source for copying conditions.  
// There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// http://gcc.gnu.org/onlinedocs/gcc/Standards.html
// Command/Options: g++-4.9  -std=c++11  -Wall cpp2011-14-6-1.cpp 
// g++-4.9: error: unrecognized command line option '-stdlib=libc++'
// Configuration:brew install gcc49
//
// 4.3. Visual Studio Express 2013, 
// (c) Microsoft http://www.visualstudio.com/
// SPEC:
// Windows 7, .NET Framework
// (c) VMware, Inc.
// VMWare fusion 6
//
// 5. Hardware:  MacBook Pro, 
//(c) Intel http://ark.intel.com/products/37006/
//Core 2 Duo 2.53GHz, 8GB, 1067MHz DDR3
//
// 6. Special Thanks: Upper organizatios and 
// ITSCJ/IPSJ http://www.itscj.ipsj.or.jp/itscj_english/index.html
// Renesas Electronics Corporation.http://www.renesas.com/
// NPO SESSAME project, http://www.sessame.jp/workinggroup/WorkingGroup3/
// Toyo Corporation, http://www.toyo.co.jp/English/
// Japan Standard Association, http://bit.ly/1lzykg1
// NPO TOPPERS project, https://www.toppers.jp/asp-d-download.html
// Daido Universcity, http://www.daido-it.ac.jp/gakubugakka/computer/index.html
// WITZ Co.Ltd., http://www.witz-inc.co.jp/products/solution/solution.html
// SevenWise.co., http://www.7ws.co.jp/index.html
// TOYOTA Motor Corporation, http://toyota.jp/
// IT planning Inc., http://www.itpl.co.jp/en/index.html
// DENSO Corporation, http://www.globaldenso.com/en/
// Aisin Seiki co. Ltd., http://www.aisin.com/
// Spancion Inc., http://www.spansion.com/
// Yazaki Corporation, http://www.yazaki-group.com/global/
// Pananosic Corporation, http://www.panasonic.net/
// SWEST: Summer Workshop on Embedded System Technologies , http://swest.toppers.jp
// CEST: Consortium for Embedded System Technology, http://www.ertl.jp/CEST/
// JUSE: Union of Japanese Scientists and Engineers, http://www.juse.or.jp/e/
// OSC:Open Source Conference, http://www.ospn.jp/

#include <iostream>
#include <cstdlib>
#include <string.h>
#include <cstring>
#include <type_traits>
#include <cassert>
#include <algorithm>
#include <cmath>
#include <complex>
#include <ccomplex>
#include <cstddef>
#include <new>
#include <vector>
#include <valarray>

using namespace std;

template<class T> class Y;
template<> class Y<int> {
Y* p; // meaning Y<int>
Y<char>* q; // meaning Y<char>
};
//
template <class T> struct Base {
Base* p;
};
template <class T> struct Derived: public Base<T> {
typename Derived::Base* p; // meaning Derived::Base<T>
};
//
template <class T> struct Base1 { };
template <class T> struct Derived1: Base1<int>, Base1<char> {
//error: typename Derived1::Base1 b; // error: ambiguous
typename Derived1::Base1<double> d; // OK
};
//
template<class T> class X {
X* p; // meaning X<T>
X<T>* p2;
X<int>* p3;
//error: ::X* p4; // error: missing template argument list
// ::X does not refer to the injected-class-name
};
template<class T, int i> class Y1 {
//error: int T; // error: template-parameter redeclared
void f() {
//error: char T; // error: template-parameter redeclared
}
};
//error: template<class X> class X; // error: template-parameter redeclared
//
template<class T> struct A {
struct B { /* ... */ };
typedef void C;
void f();
template<class U> void g(U);
};
template<class B> void A<B>::f() {
B b; // A’s B, not the template parameter
}
template<class B> template<class C> void A<B>::g(C) {
B b; // A’s B, not the template parameter
//error: C c; // the template parameter C, not A’s C
}
//
namespace N {
class C { };
template<class T> class B {
void f(T);
};
}
template<class C> void N::B<C>::f(C) {
C b; // C is the template parameter, not N::C
}
//
struct A1 {
struct B { /* ... */ };
int a;
int Y;
};
template<class B, class a> struct X1 : A1 {
B b; // A’s B
//error: a b; // error: A’s a isn’t a type name
};

int main() {

//
cout << "14 Templates 14.6 Name resolution 14.6.1 Locally declared names" << std::endl;
return 0;
}
// 1  error
// 1.1 llvm: c++ -std=c++11 -stdlib=libc++  -Wall cpp2011-14-6-1.cpp
cpp2011-14-6-1.cpp:118:51: error: empty parameter list defined with a typedef of 'void' not allowed in C++
template<class B> template<class C> void A<B>::g(C) {
                                                  ^
cpp2011-14-6-1.cpp:118:48: error: out-of-line definition of 'g' does not match any declaration in 'A<T>'
template<class B> template<class C> void A<B>::g(C) {
                                               ^
cpp2011-14-6-1.cpp:77:4: warning: private field 'p' is not used [-Wunused-private-field]
Y* p; // meaning Y<int>
   ^
cpp2011-14-6-1.cpp:78:10: warning: private field 'q' is not used [-Wunused-private-field]
Y<char>* q; // meaning Y<char>
         ^
>2 warnings and 2 errors generated.


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