> I don't think std::span is bounds checked. Try again. That's why I said add 1 line to std::span::operator[] to check your bounds. I'm telling you to modify

> I don't think std::span is bounds checked. Try again. That's why I said add 1 line to std::span::operator[] to check your bounds. I'm telling you to modify the STL header. It's a text file. Add 1 line to make it bounds-checked.