https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102358
Bug ID: 102358
Summary: niter_base and miter_base overloaded for move_iterator
missing constexpr
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: hewillk at gmail dot com
Target Milestone: ---
stl_iterator.h#L2416:
template<typename _Iterator>
auto
__niter_base(move_iterator<_Iterator> __it)
-> decltype(make_move_iterator(__niter_base(__it.base())))
{ return make_move_iterator(__niter_base(__it.base())); }
template<typename _Iterator>
auto
__miter_base(move_iterator<_Iterator> __it)
-> decltype(__miter_base(__it.base()))
{ return __miter_base(__it.base()); }
They seem to be missing constexpr:
#include <algorithm>
#include <array>
constexpr bool b = [] {
std::array<int, 2> in{}, out{};
std::move(std::move_iterator(in.begin()), std::move_iterator(in.end()),
out.begin());
return true;
}();
https://godbolt.org/z/PTrTnxTnK
