接続数

COUNTER353952FROM 2012/5/16

MISRA-C diary(C言語日誌)

MISRA-C >> 記事詳細

2014/06/12

C++N3242, 2011 (17) 3.4.3 Qualified name lookup

Tweet ThisSend to Facebook | by kaizen
// 1 filename:cpp2011-3-4-3.cpp
// ver 0.1 June.12, 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
// 3 Basic concepts.3.4 Name lookup 3.4.3 Qualified name lookup
//
// 3 compile and output mechanism:
// (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 cpp2011-3-4-3.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 cpp2011-3-4-3.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
// 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 <string>
//#include <cassert>

using namespace std;

class A {
public:
static int n;
};

class X { };
class C {
class X { };
static const int number = 50;
static X arr[number];
};
// X C::arr[number]; // error: ill-formed:
// equivalent to: ::X C::arr[C::number];
// not to: C::X C::arr[C::number];
struct C2 {
typedef int I;
};
typedef int I1, I2;
extern int* p;
extern int* q;
p->C2::I::~I(); // I is looked up in the scope of C
q->I1::~I2(); // I2 is looked up in the scope of
// the postfix-expression
struct A2 {
~A2();
};
typedef A2 AB;

int main() {
int A;
A::n = 42; // OK
// A b; // error: ill-formed: A does not name a type
AB *p;
p->AB::~AB(); // explicitly calls the destructor for A

cout << "3 Basic concepts.3.4 Name lookup 3.4.3 Qualified name lookup"<<std::endl;

return 0;
}
// 1 error 
// 1.1 LLVM >c++ -std=c++11 -stdlib=libc++ -Wall cpp2011-3-4-3.cpp 
//cpp2011-3-4-3.cpp:84:1: error: unknown type name 'p'
//p->C2::I::~I(); // I is looked up in the scope of C
//^
//cpp2011-3-4-3.cpp:84:2: error: cannot use arrow operator on a type
//p->C2::I::~I(); // I is looked up in the scope of C
// ^
//cpp2011-3-4-3.cpp:85:1: error: unknown type name 'q'
//q->I1::~I2(); // I2 is looked up in the scope of
//^
//cpp2011-3-4-3.cpp:85:2: error: cannot use arrow operator on a type
//q->I1::~I2(); // I2 is looked up in the scope of
// ^
//cpp2011-3-4-3.cpp:98:9: error: expected the class name after '~' to name a destructor
//p->AB::~AB(); // explicitly calls the destructor for A
//        ^
//  5 errors generated.
//
// 1.2 gcc > g++-4.9 -std=c++11 -Wall cpp2011-3-4-3.cpp 
//cpp2011-3-4-3.cpp:84:1: error: 'p' does not name a type
// p->C2::I::~I(); // I is looked up in the scope of C
// ^
//cpp2011-3-4-3.cpp:85:1: error: 'q' does not name a type
// q->I1::~I2(); // I2 is looked up in the scope of
// ^
//cpp2011-3-4-3.cpp: In function 'int main()':
//cpp2011-3-4-3.cpp:93:5: warning: unused variable 'A' [-Wunused-variable]
// int A;
//     ^

14:10 | 投票する | 投票数(0) | コメント(0)