pp-mcr-define-1.c.2.out

./pp-mcr-define-1.c:1:8: ERROR - missing identifier for macro name
  #define
         ^
./pp-mcr-define-1.c:2:8: ERROR - missing identifier for macro name
  #define  /* */
         ^
./pp-mcr-define-1.c:3:8: ERROR - missing identifier for macro name
  #define      /* */ ^
         ^
./pp-mcr-define-1.c:4:15: ERROR - duplicate macro parameter `a'
  #define x4(a, a)
             ~  ^
./pp-mcr-define-1.c:5:14: ERROR - missing identifier for macro parameter name
  #define x5(a, -)
               ^
./pp-mcr-define-1.c:6:16: ERROR - missing `)' in macro parameter list
  #define x6(a, b
                 ^
./pp-mcr-define-1.c:7:14: ERROR - missing identifier for macro parameter name
  #define x7(a,
               ^
./pp-mcr-define-1.c:8:16: ERROR - missing `)' in macro parameter list
  #define x8(a, b
                 ^
./pp-mcr-define-1.c:9:16: ERROR - missing `)' in macro parameter list
  #define x9(a, b  /* */
                 ^
./pp-mcr-define-1.c:10:17: ERROR - missing `)' in macro parameter list
  #define x10(a, b ^
                  ^
./pp-mcr-define-1.c:11:19: ERROR - `##' cannot appear at the boundaries of macro expansion
  #define x11(a, b) ## a
                    ^~
./pp-mcr-define-1.c:12:23: ERROR - `##' cannot appear at the boundaries of macro expansion
  #define x12(a, b) a b ##
                        ^~
./pp-mcr-define-1.c:13:29: ERROR - `##' cannot appear at the boundaries of macro expansion
  #define x13(a, b) /* ... */ ## a
                              ^~
./pp-mcr-define-1.c:14:19: ERROR - `##' cannot appear at the boundaries of macro expansion
  #define x14(a, b) ## /* ... */ a
                    ^~
./pp-mcr-define-1.c:15:21: ERROR - `##' cannot appear at the boundaries of macro expansion
  #define x15(a, b) a ## /* ... */
                      ^~
./pp-mcr-define-1.c:16:24: ERROR - `##' cannot be an operand of `##'
  #define x16(a, b) a ## ## b t
                         ^~
./pp-mcr-define-1.c:17:44: ERROR - `##' cannot be an operand of `##'
  #define x17(a, b) a /* ... */ ## /* ... */ ## /* ... */ - t
                                             ^~
./pp-mcr-define-1.c:18:16: ERROR - `#' must be followed by a macro parameter
  #define x18(a) #
                 ^
./pp-mcr-define-1.c:19:16: ERROR - `#' must be followed by a macro parameter
  #define x19(a) # b
                 ^
./pp-mcr-define-1.c:20:16: ERROR - `#' must be followed by a macro parameter
  #define x20(a) # b t
                 ^
./pp-mcr-define-1.c:23:16: ERROR - `#' must be followed by a macro parameter
  #define x23(a) # !
                 ^
./pp-mcr-define-1.c:24:16: ERROR - `#' must be followed by a macro parameter
  #define x24(a) # /* ... */ ! t
                 ^
./pp-mcr-define-1.c:25:19: ERROR - duplicate macro parameter `a'
  #define x25(a, b, a, b)
              ~     ^
./pp-mcr-define-1.c:21:9: warning - macro `x21' defined but not used
  #define x21(a) # /* ... */ a
          ^~~
./pp-mcr-define-1.c:22:9: warning - macro `x22' defined but not used
  #define x22(a) # /* ... */ a t
          ^~~