Article View: gnu.gcc.bug
Article #1529GCC 2.3.1 bug
From: pasieka%sureal
Date: Fri, 11 Dec 1992 17:45
Date: Fri, 11 Dec 1992 17:45
160 lines
4935 bytes
4935 bytes
Version of GCC: 2.3.1
Machine Type: DECstation 5000
The following C program is pre-processed differently from GCC 2.2.2 and GCC 2.3.1:
/* Start ---------------------------------------------------------------- */
#ifdef NOTDEFINED
#undef NOTDEFINED
#endif
#define BODY_MACRO(BODY) \
do { BODY; } while (0)
main ()
{
BODY_MACRO(
{
printf ("Hello world 1!\n");
#ifdef NOTDEFINED
/* Just a comment */
#endif
printf ("Hello world 2!\n");
});
return 0;
}
/* End ------------------------------------------------------------------ */
****** From GCC 2.2.2:
Command line:
gcc ../../../test/bugs/macro.c -v -save-temps -o macro
GCC Output:
Reading specs from /usr/local/lib/gcc-lib/mips-dec-ultrix4.2/2.2.2/specs
gcc version 2.2.2
/usr/local/lib/gcc-lib/mips-dec-ultrix4.2/2.2.2/cpp -lang-c -v -undef
-D__GNUC__=2 -D__ANSI_COMPAT -DMIPSEL -DR3000 -DSYSTYPE_BSD
-D_SYSTYPE_BSD -Dbsd4_2 -Dhost_mips -Dmips -Dultrix -Dunix
-D__ANSI_COMPAT -D__MIPSEL__ -D__R3000__ -D__SYSTYPE_BSD__
-D___SYSTYPE_BSD__ -D__bsd4_2__ -D__host_mips__ -D__mips__ -D__ultrix__
-D__unix__ -D__ANSI_COMPAT -D__MIPSEL -D__R3000 -D__SYSTYPE_BSD
-D___SYSTYPE_BSD -D__bsd4_2 -D__host_mips -D__mips -D__ultrix -D__unix
-D__LANGUAGE_C__ -D__LANGUAGE_C -DLANGUAGE_C ../../../test/bugs/macro.c macro.i
GNU CPP version 2.2.2 [AL 1.1, MM 19] DECstation running ultrix
/usr/local/lib/gcc-lib/mips-dec-ultrix4.2/2.2.2/cc1 macro.i -quiet
-dumpbase macro.c -version -o macro.s
GNU C version 2.2.2 [AL 1.1, MM 19] DECstation running ultrix compiled
by GNU C version 2.2.2.
as -nocpp -EL -v -o macro.o macro.s
/usr/lib/cmplrs/cc/as0 -v -G 8 -EL -g0 -O1 macro.s -o /tmp/ctmaa20006
-t /tmp/ctmsta20006
as0: main
0.0u 0.0s 0:00 16% 64+51k 3+10io 20pf+0w
/usr/lib/cmplrs/cc/as1 -v -G 8 -p0 -EL -g0 -O1 /tmp/ctmaa20006 -o
macro.o -t /tmp/ctmsta20006
as1: main
0.0u 0.0s 0:00 10% 105+72k 3+3io 36pf+0w
/usr/local/lib/gcc-lib/mips-dec-ultrix4.2/2.2.2/mips-tfile -v -I
macro.o~ -o macro.o macro.s
mips-tfile version 2.2.2 [AL 1.1, MM 19] DECstation running ultrix
/usr/local/lib/gcc-lib/mips-dec-ultrix4.2/2.2.2/ld -EL -o macro
/usr/lib/cmplrs/cc/crt0.o
-L/usr/local/lib/gcc-lib/mips-dec-ultrix4.2/2.2.2 -L/usr/lib/cmplrs/cc
-L/usr/lib/cmplrs/cc -L/usr/local/lib macro.o -lgcc -lc -lgcc
CPP output:
/* Start ---------------------------------------------------------------- */
# 1 "../../../test/bugs/macro.c"
main ()
{
do {
{
printf ("Hello world 1!\n");
printf ("Hello world 2!\n");
}; } while (0) ;
return 0;
}
/* End ------------------------------------------------------------------ */
****** From GCC 2.3.1:
Command line:
/exp/rcf/share/bin/gcc macro.c -v -save-temps -o macro
GCC Output:
Reading specs from /exp/rcf/share/lib/gcc-lib/decstation-ultrix/2.3.1/specs
gcc version 2.3.1
/exp/rcf/share/lib/gcc-lib/decstation-ultrix/2.3.1/cpp -lang-c -v
-undef -D__GNUC__=2 -D__ANSI_COMPAT -DMIPSEL -DR3000 -DSYSTYPE_BSD
-D_SYSTYPE_BSD -Dbsd4_2 -Dhost_mips -Dmips -Dultrix -Dunix
-D__ANSI_COMPAT -D__MIPSEL__ -D__R3000__ -D__SYSTYPE_BSD__
-D___SYSTYPE_BSD__ -D__bsd4_2__ -D__host_mips__ -D__mips__ -D__ultrix__
-D__unix__ -D__ANSI_COMPAT -D__MIPSEL -D__R3000 -D__SYSTYPE_BSD
-D___SYSTYPE_BSD -D__bsd4_2 -D__host_mips -D__mips -D__ultrix -D__unix
-D__LANGUAGE_C__ -D__LANGUAGE_C -DLANGUAGE_C ../../../test/bugs/macro.c macro.i
GNU CPP version 2.3.1 [AL 1.1, MM 28] DECstation running ultrix
/exp/rcf/share/lib/gcc-lib/decstation-ultrix/2.3.1/cc1 macro.i -quiet
-dumpbase macro.c -version -o macro.s
GNU C version 2.3.1 [AL 1.1, MM 28] DECstation running ultrix compiled
by GNU C version 2.3.1.
../../../test/bugs/macro.c: In function `main':
../../../test/bugs/macro.c:15: undefined or invalid # directive
../../../test/bugs/macro.c:17: undefined or invalid # directive
CPP output:
/* Start ---------------------------------------------------------------- */
#1 "../../../test/bugs/macro.c"
main ()
{
do {
{
printf ("Hello world 1!\n");
#ifdef NOTDEFINED
#endif
printf ("Hello world 2!\n");
}; } while (0) ;
return 0;
}
/* End ------------------------------------------------------------------ */
Please feel free to contact me about this if I can provide more
information. I can be reached via email at pasieka@cs.umass.edu or by
phone at 413/545-2447.
-- Michael
Technical Details
Message-ID:
<9212111745.AA09776@sureal.cs.umass.edu>Path:
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Complete Article Headers
Newsgroups: gnu.gcc.bug Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!cis.ohio-state.edu!cs.umass.edu!pasieka%sureal From: pasieka%sureal@cs.umass.edu Subject: GCC 2.3.1 bug Message-ID: <9212111745.AA09776@sureal.cs.umass.edu> Sender: gnulists@ai.mit.edu Organization: GNUs Not Usenet Distribution: gnu Date: Fri, 11 Dec 1992 17:45:24 GMT Approved: bug-gcc@prep.ai.mit.edu Lines: 161