[Bug c/12513] macro past '##' behaving differently that prev. and other C/C++ compilers

[jerry_williams at candle dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12513



------- Additional Comments From jerry_williams at candle dot com  2003-10-05 02:28 -------
Subject: Re:  macro paste '##' behaving differently that prev. and
 other C/C++ compilers


pinskia,

      Could you please sight the standard (location), and date this
standard was recently changed, so we can verify the cause for this code to
change.
      This syntax works with GNU C/C++ pre 3.3 release(2.96), and other
current C/C++ compilers used, about 10.
      This appears to be a regression.

      Thanks.

Jerry A Williams



                                                                                                                          
                      "pinskia at gcc                                                                                     
                      dot gnu dot org"         To:      jerry_williams@candle.com                                         
                      <gcc-bugzilla@gc         cc:                                                                        
                      c.gnu.org>               Subject: [Bug c/12513] macro past '##' behaving differently that prev. and 
                                               other C/C++ compilers                                                      
                      10/04/2003 09:18                                                                                    
                      PM                                                                                                  
                      Please respond                                                                                      
                      to gcc-bugzilla                                                                                     
                                                                                                                          
                                                                                                                          



PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12513


pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------

             Status|UNCONFIRMED                 |RESOLVED
   GCC host triplet|lnx  Suse 7.1  Intel        |lnxSuse 7.1  Intel
         Resolution|                            |INVALID


------- Additional Comments From pinskia at gcc dot gnu dot org  2003-10-05
02:18 -------
The error is correct according to the ISO/ANSI C and the ISO/ANSI C++
standards.
The way to correct the source is (removing the ##):
#define __STRINGIZE(_STR_) #_STR_
#define _STRINGIZE(_STR_) __STRINGIZE(_STR_)
#define _SOURCE_(_1_) _1_.h
#define _SOURCEPATH(_1_) _STRINGIZE(dir/_1_)
#include _SOURCEPATH(lib/_SOURCE_(foo))



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