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From:	"Anyos Bela" <Anyos DOT Bela AT evosoft DOT hu>
To:	<cygwin AT cygwin DOT com>
Subject:	1.3.2: gcc bug (NT 4.0)
Date:	Fri, 27 Jul 2001 15:48:24 +0200
Message-ID:	<000e01c116a2$cee06510$b86e10ac@evosoft.hu>
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Hi Guys,

I think I found a problem in connection with
gcc 'token-pasting' operator (##)

	$ gcc -v
	Reading specs from /usr/lib/gcc-lib/i686-pc-cygwin/2.95.3-5/specs
	gcc version 2.95.3-5 (cygwin special)

I use cygwin v1.3.2 under NT 4.0 Service Pack 6.

Here's a little example to show its failure:
( obviously it has no meaning, I used it just for demonstrating the
problem )

--------------------
#define Glue(a,b) a##b

#define TestDef /usr/X11R6

int main( int argc, char *argv[] )
{
	printf( "%s", Glue( TestDef,/lib ) );
	return 0;
}
---------------------

Feeding this to gcc it produces the following on my computer:

---------------------
$ gcc -E test.c
# 1 "test.c"




int main( int argc, char *argv[] )
{
        printf( "%s",   /usr/X11R6 /lib    );
        return 0;
}
---------------------

Please notice the gap between '/usr/X11R6' and '/lib'.
It only happens if the first paramter of the 'Glue' macro is
another macro. If I use a literal it works fine!
I also tested it on Linux and it worked fine there.


Thanks for your help and best regards,
Bela

ps.: Can you please cc answers to me, because I'm not on the list, yet !
     Thanks !


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