John (Eljay) Love-Jensen wrote: > Hi Aaron, > >> void foo(const int (* p)[9]); >> >> In this case, you are guaranteed that the caller is giving you a valid >> buffer. Otherwise, you will get a compile error message which will help >> you quickly detect a problem. > > I think... > > In C, arrays degenerate into pointers at the drop of a hat. > > These two kinds of pointers are compatible: > int* p; > int const* p; > > The two kinds of pointers are compatible: > int** p; > int* const* p; > > The two kinds of pointers are not compatible: > int** p; > int const** p; > > Your situation is like the third case. The const is not > two-levels-of-indirection compatible. > > Anyone have ISO 9899 on hand to cite chapter & verse? I just did. :-) Andrew.
