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

     1  foo (a)
     2  {
     3    int bar = 0;
     4  
     5    return (unsigned) (a - 1) <= (unsigned) bar;
     6  }
     7  
     8  main ()
     9  {
    10    if (foo (-1))
    11      puts ("The largest possible unsigned <= 0 on this machine...");
    12  }