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2014/06/14

C++N3242, 2011 (53) 7.1.1 Storage class specifiers [dcl

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// 1 filename:cpp2011-7-1-1.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
// > 7 Declarations 7.1 Specifiers 7.1.1 Storage class specifiers [dcl
//
// 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 cpp2011-7-1-1.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 cpp2011-7-1-1.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>
#define OK "ok"
#define NG "ng"

using namespace std;
//
char* f() // f() still has internal linkage
{ /* ... */
return OK;}
//error: char* g(); // g() has external linkage
static char* g() // error: inconsistent linkage
{ /* ... */
return NG;}
void h();
inline void h(); // external linkage
inline void l();
void l(); // external linkage
inline void m();
extern void m(); // external linkage
static void n();
inline void n(); // internal linkage
static int a; // a has internal linkage
// error: int a; // error: two definitions
static int b; // b has internal linkage
extern int b; // b still has internal linkage
int c; // c has external linkage
//error: static int c; // error: inconsistent linkage
extern int d; // d has external linkage
//error: static int d; // error: inconsistent linkage
//
struct S;
extern S a1;
extern S f1();
extern void g(S);
void h() {
//error: g(a1); // error: S is incomplete
//error: f1(); // error: S is incomplete
}
//
class X {
mutable const int* p; // OK
//error: mutable int* const q; // ill-formed
};

int main() {
h();
cout << "7 Declarations 7.1 Specifiers 7.1.1 Storage class specifiers [dcl" << std::endl;
}
// 1 warning 
// 1.1 llvm: c++ -std=c++11 -stdlib=libc++ -Wall cpp2011-7-1-1.cpp 
cpp2011-7-1-1.cpp:75:8: warning: conversion from string literal to 'char *' is deprecated [-Wdeprecated-writable-strings]
return OK;}
       ^
cpp2011-7-1-1.cpp:68:12: note: expanded from macro 'OK'
#define OK "ok"
           ^
cpp2011-7-1-1.cpp:79:8: warning: conversion from string literal to 'char *' is deprecated [-Wdeprecated-writable-strings]
return NG;}
       ^
cpp2011-7-1-1.cpp:69:12: note: expanded from macro 'NG'
#define NG "ng"
           ^
cpp2011-7-1-1.cpp:77:14: warning: unused function 'g' [-Wunused-function]
static char* g() // error: inconsistent linkage
             ^
cpp2011-7-1-1.cpp:86:13: warning: unused function 'n' [-Wunused-function]
static void n();
            ^
cpp2011-7-1-1.cpp:88:12: warning: unused variable 'a' [-Wunused-variable]
static int a; // a has internal linkage
           ^
cpp2011-7-1-1.cpp:90:12: warning: unused variable 'b' [-Wunused-variable]
static int b; // b has internal linkage
           ^
cpp2011-7-1-1.cpp:107:20: warning: private field 'p' is not used [-Wunused-private-field]
mutable const int* p; // OK
                   ^
7 warnings generated.
//1.2 gcc: g++-4.9 -std=c++11 -Wall cpp2011-7-1-1.cpp 
cpp2011-7-1-1.cpp: In function 'char* f()':
cpp2011-7-1-1.cpp:68:12: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
 #define OK "ok"
            ^
cpp2011-7-1-1.cpp:75:8: note: in expansion of macro 'OK'
 return OK;}
        ^
cpp2011-7-1-1.cpp: In function 'char* g()':
cpp2011-7-1-1.cpp:69:12: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
 #define NG "ng"
            ^
cpp2011-7-1-1.cpp:79:8: note: in expansion of macro 'NG'
 return NG;}
        ^
cpp2011-7-1-1.cpp: At global scope:
cpp2011-7-1-1.cpp:77:14: warning: 'char* g()' defined but not used [-Wunused-function]
 static char* g() // error: inconsistent linkage
              ^
cpp2011-7-1-1.cpp:87:13: warning: 'void n()' declared 'static' but never defined [-Wunused-function]
 inline void n(); // internal linkage
             ^
cpp2011-7-1-1.cpp:88:12: warning: 'a' defined but not used [-Wunused-variable]
 static int a; // a has internal linkage
            ^
cpp2011-7-1-1.cpp:91:12: warning: 'b' defined but not used [-Wunused-variable]
 extern int b; // b still has internal linkage
            ^

// 2 output 
// 7 Declarations 7.1 Specifiers 7.1.1 Storage class specifiers [dcl


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