[Bug preprocessor/16903] __LINE__ is not implemented in preprocessor

[joerg dot richter at pdv-fs dot de]

------- Additional Comments From joerg dot richter at pdv-fs dot de  2004-08-06 19:32 -------
This is required behavior. 

Perhaps you want something like this:

#define CONCAT_( a, b ) a ## b
#define CONCAT( a, b ) CONCAT_( a, b )

#define xxxprintf(fmt,...)                                 \
  { static char BANK30 CONCAT( fmt_, __LINE__ )[] = fmt;   \
  printf(copy_format( CONCAT( fmt_, __LINE__ ) ), ##__VA_ARGS__); }

Arguments to ## are not expanded. You have to expand them yourself (with one
indirection) and concat them later. Note: The same is true for #

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16903