Created on 2015-09-14.00:00:00 last changed 94 months ago
Proposed resolution (April, 2016):
Change 11.4.5.3 [class.copy.ctor] paragraph 12 as follows:
A copy/move constructor for class X is trivial if it is not user-provided, its parameter-type-list is equivalent to the parameter-type-list of an implicit declaration,and if...
Change 11.4.5.3 [class.copy.ctor] paragraph 25 as follows:
A copy/move assignment operator for class X is trivial if it is not user-provided, its parameter-type-list is equivalent to the parameter-type-list of an implicit declaration,and if...
[Adopted at the June, 2016 meeting.]
Issue 1333 says that a defaulted copy constructor with a less-const-qualified parameter type than the implicit declaration is non-trivial. This is inconsistent with the usual pattern that whether a special member function is callable is separate from whether it is trivial; the different declaration only affects whether you can call it with a const argument, it doesn't affect the operations involved. Should this outcome be reconsidered?
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2017-02-06 00:00:00 | admin | set | messages: + msg6104 |
| 2017-02-06 00:00:00 | admin | set | status: drafting -> cd4 |
| 2015-09-14 00:00:00 | admin | create | |