Created on 2011-08-16.00:00:00 last changed 130 months ago
[Moved to DR at the October, 2012 meeting.]
Proposed resolution (February, 2012):
Change 9.2.6 [dcl.constexpr] paragraph 4 as follows:
In a definition of a constexpr constructor, each of the parameter types shall be a literal type. In addition, either its function-body shall be = delete or = default or it shall satisfy the following constraints:
...
every non-variant non-static data member and base class sub-object shall be initialized (11.9.3 [class.base.init]);
if the class is a non-empty union, or for each non-empty anonymous union member of a non-union class, exactly one non-static data member shall be initialized;
...
A constexpr constructor is required to initialize all non-static data members (9.2.6 [dcl.constexpr] paragraph 4), which conflicts with the requirement that a constructor for a union is permitted to initialize only a single non-static data member (11.9.3 [class.base.init] paragraph 8).
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2014-03-03 00:00:00 | admin | set | status: drwp -> cd3 |
| 2013-05-03 00:00:00 | admin | set | status: dr -> drwp |
| 2012-11-03 00:00:00 | admin | set | messages: + msg4141 |
| 2012-11-03 00:00:00 | admin | set | status: ready -> dr |
| 2012-02-27 00:00:00 | admin | set | messages: + msg3716 |
| 2012-02-27 00:00:00 | admin | set | status: drafting -> ready |
| 2011-08-16 00:00:00 | admin | create | |