[map.overview] Missing `constexpr` for `explicit map(const Allocator&)`

[ckwastra]

P3372R3 states:

Notes for wording changes

Mechanically mark all functionality in [container] constexpr with exception of node-handle::mapped() (which is subject of CWG-2514). Also make sure all iterator types are constexpr.

However, in the wording of that paper, a notable omission is the constructor explicit map(const Allocator&), which is not marked as constexpr:

draft/source/containers.tex

Lines 11568 to 11570 in aaa2220

	constexpr map(map&& x);
	explicit map(const Allocator&);
	constexpr map(const map&, const type_identity_t<Allocator>&);

I believe this is an editorial issue.¹

Footnotes

1. This issue has been discussed in the Cpplang Slack. ↩

[jensmaurer]

That was discussed on the committee's -lib reflector in February 2025. I asked for an LWG issue back then. Please check the LWG issues list and, if none is there, have one created.

[jwakely]

It's now LWG4291 https://cplusplus.github.io/LWG/issue4291