From:	Eugene Ageenko <ageson AT cs DOT joensuu DOT fi>
Newsgroups:	comp.os.msdos.djgpp,gnu.gcc,gnu.gcc.help
Subject:	GCC vs. CC. problem with macro. Help required!
Date:	Tue, 01 Jun 1999 18:20:39 +0300
Organization:	University of Joensuu / Dept. of Computer Sci.
Lines:	49
Message-ID:	<3753FA47.81AD25F6@cs.joensuu.fi>
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Hi!

I have teh following problem to compile my programs using "cc", when
programs compiled perfectly with "gcc".

As I have found the error was in that cc was unable to process
concatenation operator ## in macro.
But one of the modules we are using is based on this technique.

Here is the simple program:

#define A(x,y) x##y

void main(void)
{
  int abra;
  A(ab,ra) = 3;
} 


And here are compilation results, compilation with cc did not come
through, that I no wonder:

> gcc a.c -E
# 1 "a.c"


void main(void)
{
  int abra;
   abra   = 3;

}     

> cc a.c -E
# 1 "a.c"


void main(void)
{
  int abra;
  ab##ra = 3;

}
   

Could you help me with this problem?

Eugene

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