1  /* K+R rejects use of function-like macros in non-function context.
       2     ANSI C explicitly permits this (the macro is not expanded).
       3  
       4     We should not warn about this during pre-expansion of arguments,
       5     since traditional preprocessors don't do pre-expansion, and we get
       6     the warning anyway during the re-scan pass if and only if it is
       7     appropriate.  */
       8  
       9  /* { dg-do preprocess } */
      10  /* { dg-options -Wtraditional } */
      11  
      12  #define f(x) x
      13  #define g(x) x / 2
      14  #define h(a, b) a(b)
      15  f(g) (3)	    /* { dg-bogus "must be used with arguments" } */
      16  f 2		    /* { dg-warning "must be used with arguments" } */
      17  f(g) 3		    /* { dg-warning "must be used with arguments" } */
      18  h(f, 3)		    /* { dg-bogus "must be used with arguments" } */