[Tuxnes-devel] Odd problem (gcc3-related?)

[Mike M. <mel...@pc...>]

Hi team,
	I just got a bug report. The file emu.c failed compilation with
this error:

gcc -DHAVE_CONFIG_H -I. -I. -I.     -O -pipe -Wall  -I/usr/X11R6/include
-D__USE_BSD -c emu.c
emu.c:724:1: directives may not be used inside a macro argument
emu.c:724:1: unterminated argument list invoking macro "printf"
emu.c: In function `help_controls':
emu.c:725: parse error before string constant
emu.c: In function `main':
emu.c:1187: warning: `size' might be used uninitialized in this function
make: *** [emu.o] Error 1

The user reported that he's compiling with gcc v3.0.1 on Slackware
7.1. The offending code looks like this:

  printf ("    S, F7, PrintScreen\n"
          "      - Capture screenshot\n"
#ifdef HAVE_X
          "            Under X11, save to ~/.tuxnes/snap\?\?\?\?.xpm\n"
#endif /* HAVE_X */
#ifdef HAVE_GGI
          "            Under GGI, save to ~/.tuxnes/snap\?\?\?\?.ppm\n"
#endif /* HAVE_GGI */
#ifdef HAVE_W
          "            Under W, save to ~/.tuxnes/snap\?\?\?\?.p8m\n"
#endif /* HAVE_W */
          );

So it seems to be complaining about those compiler directives embedded in
the printf() statement. Needless to say, this has always worked peachy
with everyone else's compilers. I even checked the preprocessor output
from gcc -E and everything looks fine.

	As a temporary hack, I advised the user if '#if 0' out the
#ifdef's. Does anyone know if gcc 3 rejects this construct, or if it's
some other problem?

	Thanks...
-- 
	-Mike Melanson