modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/20001221-1.c (about)

     1  int main ()
     2  {
     3    unsigned long long a;
     4    if (! (a = 0xfedcba9876543210ULL))
     5      abort ();
     6    exit (0);
     7  }