In file included from /usr/include/c++/12/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/12/bits/stdc++.h:65,
                 from /in/foo.cc:1:
In function 'void std::__final_insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = ff*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(ff, ff)>]',
    inlined from 'void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = ff*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(ff, ff)>]' at /usr/include/c++/12/bits/stl_algo.h:1940:31,
    inlined from 'void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = ff*; _Compare = bool (*)(ff, ff)]' at /usr/include/c++/12/bits/stl_algo.h:4853:18,
    inlined from 'int main()' at /in/foo.cc:186:6:
/usr/include/c++/12/bits/stl_algo.h:1849:32: warning: array subscript 17 is outside array bounds of 'ff [12]' [-Warray-bounds]
 1849 |           std::__insertion_sort(__first, __first + int(_S_threshold), __comp);
      |           ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:166:2: note: at offset 272 into object 'xx' of size 192
  166 | }xx[12];
      |  ^~