std::reverse_iterator should be a literal typeSection: 24.5.1 [reverse.iterators] Status: Resolved Submitter: Jeffrey Yasskin Opened: 2012-10-30 Last modified: 2017-03-12
Priority: 3
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Discussion:
std::reverse_iterator::reverse_iterator(Iterator) should be constexpr
so that other constexpr functions can return reverse_iterators. Of the
other methods, the other constructors, base(), operator+, operator-,
operator[], and the non-member operators can probably also be
constexpr.
operator* cannot be constexpr because it involves an assignment to a
member variable. Discussion starting with c++std-lib-33282 indicated
that it would be useful to make reverse_iterator a literal type
despite this restriction on its use at compile time.
Proposed resolution:
This issue was Resolved by paper P0031R0 adopted at Jacksonville, 2016.