/ filename:c2011-6-4-7-ex.c
// original examples and/or notes:
// (c) ISO/IEC JTC1 SC22 WG14 N1570, April 12, 2011
// http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf
// C2011 6.4.7 Header names
// compile and output mechanism:
// (c) Ogawa Kiyoshi, kaizen@gifu-u.ac.jp, December.xx, 2013
// compile errors and/or wornings:
// 1(c) Apple LLVM version 4.2 (clang-425.0.27) (based on LLVM 3.2svn)
// Target: x86_64-apple-darwin11.4.2 //Thread model: posix
// (c) LLVM 2003-2009 University of Illinois at Urbana-Champaign.
// 2    gcc-4.9 (GCC) 4.9.0 20131229 (experimental)
//      Copyright (C) 2013 Free Software Foundation, Inc.

#include <1/a.h>
#define const.member@$  

struct a { int h;} a;

int main(void){
printf("%s",0x3<1/a.h>1e2);
return printf("\n6.4.7 Header names\n");
}
// 1. warning 
//c2011-6-4-7-ex.c:11:14: warning: ISO C99 requires whitespace after the macro name [-Wc99-extensions]
//#define const.member@$
//             ^
//1 warning and 2 errors generated.
// 2, output GCC4.9
// (null)
//6.4.7 Header names
// 3. preprocessing
// gcc-4.9 -E c2011-6-4-7-ex.c 
//# 1 "c2011-6-4-7-ex.c"
//# 1 "<command-line>"
//# 1 "c2011-6-4-7-ex.c"
//# 9 "c2011-6-4-7-ex.c"
//# 1 "/usr/include/1/a.h" 1 3 4
//# 10 "c2011-6-4-7-ex.c" 2
//c2011-6-4-7-ex.c:10:14: warning: missing whitespace after the macro name [enabled by default]
// #define const.member@$  
//              ^
//struct a { int h;} a;
//int main(void){
// printf("%s",0x3<1/a.h>1e2);
//return printf("\n6.4.7 Header names\n");
//}