From:	sof AT dcs DOT gla DOT ac DOT uk (Sigbjorn Finne)
Subject:	RE: SML-NJ for CygWin32
31 Aug 1997 12:10:43 -0700 :
Approved:	cygnus DOT gnu-win32 AT cygnus DOT com
Distribution:	cygnus
Message-ID:	<19970828191744.FMU39440.cygnus.gnu-win32@savage>
References:	<6CC63E2E4FC1D011A2A700609716117A266F0A AT seawolf>
Mime-Version:	1.0
Original-To:	Fuehrer AT seabase DOT com
Original-Cc:	gnu-win32 AT cygnus DOT com, denis DOT trcek AT ijs DOT si
In-Reply-To:	<6CC63E2E4FC1D011A2A700609716117A266F0A@seawolf>
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Original-Sender:	owner-gnu-win32 AT cygnus DOT com

> > > 
> > > This is clearly incorrect behavior on the part of CygWin's gcc.
> > Dollar
> > > signs are not valid leading characters of C (or C++) identifiers.
> > > 
> Until this is fixed in the preprocessor, the work-around for building
> SML-NJ is to add a space separator between the "$" and the constant.  I
> will NOT submit this change to the SML-NJ team.  They would likely
> reject it anyhow (I would).


Hi, 

AFAIK, it is ANSI that forbids $ in ids. I'd expect this restriction
to be enabled via -ansi (as per gcc docs.) For whatever reason, the
gcc2 snap included in b18 doesn't pass -$ to cpp with -ansi..

 foo$ gcc -v
 Reading specs from
 c:\usr\H-i386-cygwin32\lib\gcc-lib\i386-cygwin32\cygnus-2.7.2-970404\specs
 gcc version cygnus-2.7.2-970404
 foo$ echo 'subl $FOO, %eax' | gcc -E -Wp,-P -DFOO=4 -
 subl $FOO, %eax
 foo$ echo 'subl $FOO, %eax' | gcc -E -Wp,-P -DFOO=4 -ansi -
 subl $FOO, %eax

Suggested workaround: use -Wp,-$

 foo$ echo 'subl $FOO, %eax' | gcc -E -Wp,-P -DFOO=4 -Wp,-$ -
 subl $4 , %eax

HTH,
--Sigbjorn
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