https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117094
Bug ID: 117094
Summary: ranges::fill misses std::move for output_iterator
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: hewillk at gmail dot com
Target Milestone: ---
When sized_sentinel_for<_Sent, _Out> is true, ranges::fill dispatches
ranges::fill_n(__first, __len, __value) while __first is not guaranteed to be
copyable.
#include <iostream>
#include <ranges>
#include <algorithm>
struct O {
using difference_type = std::ptrdiff_t;
O() = default;
O(O&&) = default;
O& operator=(O&&) = default;
O& operator*();
O& operator++();
O operator++(int);
O& operator=(int);
};
int main() {
std::ranges::fill(std::views::counted(O{}, 5), 42);
}
https://godbolt.org/z/fz16aKv9v
