modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/compile/921227-1.c (about)

     1  #define k(a) #a
     2  char *s = k(k(1,2));
     3  char *t = k(#) k(#undef k) k(x);
     4  
     5  f(){}