https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81721
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is a much simplier testcase (without using system header files):
a.h:
# define __glibc_macro_warning1(message) _Pragma (#message)
# define __glibc_macro_warning(message) \
__glibc_macro_warning1 (GCC warning message)
#define __SYSMACROS_DM1(...) __glibc_macro_warning (#__VA_ARGS__)
#define __SYSMACROS_DM(symbol) __SYSMACROS_DM1 \
(Did not Work)
# define major(dev) __SYSMACROS_DM (major) (dev+0)
---- CUT ---
a.c:
#include "a.h"
int main(void){ major(0);}
---- CUT ----
I will submit a patch for this soon.
