http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56599
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> 2013-03-11 18:49:38 UTC --- Works on the trunk on x86_64-linux-gnu just fine: dlt8.c:4:25: error: expected ‘,’ or ‘;’ before numeric constant #define SAMPLELONGLONG 123456789012345 ^ dlt8.c:10:90: note: in expansion of macro ‘SAMPLELONGLONG’ "Here we have some user info, wherein we stupidly try to include a numeric constant " SAMPLELONGLONG; ^ apinski@apinskidesktop:~/Downloads$ ~/gcc-228/bin/gcc dlt9.c dlt9.c:4:25: error: expected ‘,’ or ‘;’ before numeric constant #define SAMPLELONGLONG 123456789012345 ^ dlt9.c:10:90: note: in expansion of macro ‘SAMPLELONGLONG’ "Here we have some user info, wherein we stupidly try to include a numeric constant " SAMPLELONGLONG; ^