modernc.org/ccgo/v3@v3.16.14/lib/testdata/tcc-0.9.27/tests/pp/pp-counter.c (about)

     1  X1 __COUNTER__
     2  X2 __COUNTER__
     3  #if __COUNTER__
     4  X3 __COUNTER__
     5  #endif
     6  #define pass(x) x
     7  #define a x __COUNTER__ y
     8  #define a2 pass(__COUNTER__)
     9  #define f(c) c __COUNTER__
    10  #define apply(d) d d __COUNTER__ x2 f(d) y2 __COUNTER__
    11  #define _paste(a,b) a ## b
    12  #define paste(a,b) _paste(a,b)
    13  #define _paste3(a,b,c) a ## b ## c
    14  #define doublepaste(a,b) _paste3(a,b,b)
    15  #define str(x) #x
    16  X4 a
    17  X5 f(a)
    18  X6 f(b)
    19  X7 f(__COUNTER__)
    20  X8 apply(a)
    21  X9 apply(f(a))
    22  X10 apply(__COUNTER__)
    23  X11 apply(a2)
    24  X12 str(__COUNTER__)
    25  X13 paste(x,__COUNTER__)
    26  X14 _paste(x,__COUNTER__)
    27  X15 doublepaste(x,__COUNTER__)