[Bug libstdc++/70472] is_copy_constructible>>::value is true
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70472 Askar Safin changed: What|Removed |Added Resolution|--- |INVALID Status|NEW |RESOLVED --- Comment #15 from Askar Safin --- I agree. I close as INVALID
[Bug libstdc++/70472] is_copy_constructible>>::value is true
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70472
Arthur O'Dwyer changed:
What|Removed |Added
CC||arthur.j.odwyer at gmail dot
com
--- Comment #14 from Arthur O'Dwyer ---
> The problem is that std::vector does have a copy constructor, so the trait
> value is true, but instantiating that constructor produces an error when the
> value_type is not copyable.
Worse, the value_type can be incomplete, as in
struct Node {
std::vector children_;
};
Askar: see
https://quuxplusone.github.io/blog/2020/02/05/vector-is-copyable-except-when-its-not/
I suggest closing this bug report as Not A Bug. It certainly shouldn't be
tagged `wrong-code`.
[Bug libstdc++/70472] is_copy_constructible>>::value is true
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70472 Jonathan Wakely changed: What|Removed |Added Status|ASSIGNED|NEW Assignee|redi at gcc dot gnu.org|unassigned at gcc dot gnu.org
[Bug libstdc++/70472] is_copy_constructible>>::value is true
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70472 Simon Brand changed: What|Removed |Added CC||simonrbrand at gmail dot com --- Comment #13 from Simon Brand --- Is there any decent workaround for this for pre-GCC8 users? My current approach is to add specializations to my own trait whenever a user of my library needs support for types with this issue. I can happily use intrinsics if some would make this easier.
[Bug libstdc++/70472] is_copy_constructible>>::value is true
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70472 Jonathan Wakely changed: What|Removed |Added Target Milestone|8.3 |---
[Bug libstdc++/70472] is_copy_constructible>>::value is true
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70472 Jakub Jelinek changed: What|Removed |Added Target Milestone|8.2 |8.3 --- Comment #12 from Jakub Jelinek --- GCC 8.2 has been released.
