https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95279
--- Comment #14 from joseph at codesourcery dot com <joseph at codesourcery dot com> --- I think it's invalid to refer to element (size_t)-1 of an array; that the actual integer value used has to be within the range of available array elements. It's entirely possible that such an invalid usage is nevertheless widespread in practice.
