What exactly does std::end() point to? When using a std::vector, does it allocate extra memory to accommodate the end position of the elements?
Understanding the Behavior of std::end() and Memory Allocation in Vectors
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Calling
std::end()on astd::vectorsimply returns the vector'senditerator, which points at the memory address beyond the last element of the vector's array:If the
vector'ssizeis less than itscapacity, there will be memory allocated for this 1-past-the-end position, but regardless, the content of the end position is undefined and should never be accessed.