Out-of-bounds Iterator Access
Out-of-bounds iterator access is an undefined behavior, which might give a segfault, or give a garbage value.
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#include <vector>
#include <iostream>
int main() {
std::vector<int> v = {10, 20, 30};
auto iter_first = v.begin();
auto bad_iter = iter_first + 5;
// Dereference — UB, likely a segfault
std::cout << *bad_iter << "\n";
return 0;
}
