Undefined behavior on partially filled span overflow #17
Description
In case of overflow:
int arr[] = { 0, 1 , 2 };
ring_span<int> rs( arr, arr + dim(arr), arr + 1, 3 );
ring-span-lite/include/nonstd/ring_span.hpp
Lines 432 to 445 in dfb7c34
Should
assert(first + size <= end); be added?