modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/970214-2.c (about)

     1  #define m(L) (L'1' + (L))
     2  main ()
     3  {
     4    exit (m (0) != L'1');
     5  }