r263732 - Remove defaulted move ops, the type is zero-cost copyable anyway, so there's no need for specific move ops

David Blaikie via cfe-commits cfe-commits at lists.llvm.org
Thu Mar 17 13:51:31 PDT 2016


On Thu, Mar 17, 2016 at 1:41 PM, don hinton <hintonda at gmail.com> wrote:

> Dave:
>
> Won't this prevent UnresolvedSet from being movable?
>
> I was under the impression that all subobjects (base class in this case)
> had to be movable in order for the compiler to generate implicit move ops.
> Is that not the case?
>

Yeah, I think you're right (I thought the language had been fixed/changed
here, so that a type with a copyable-but-not-movable member, and a movable
(but possibly non-copyable member) could still be moved, and just move the
moveable parts and copy the non-movable parts - but I can't see any
evidence of that). Added explicit (empty) move ops in r263747


>
> thanks...
> don
>
> On Thu, Mar 17, 2016 at 2:28 PM, David Blaikie via cfe-commits <
> cfe-commits at lists.llvm.org> wrote:
>
>> Author: dblaikie
>> Date: Thu Mar 17 13:28:16 2016
>> New Revision: 263732
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=263732&view=rev
>> Log:
>> Remove defaulted move ops, the type is zero-cost copyable anyway, so
>> there's no need for specific move ops
>>
>> (addresses MSVC build error, since MSVC 2013 can't generate default move
>> ops)
>>
>> Modified:
>>     cfe/trunk/include/clang/AST/UnresolvedSet.h
>>
>> Modified: cfe/trunk/include/clang/AST/UnresolvedSet.h
>> URL:
>> http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/UnresolvedSet.h?rev=263732&r1=263731&r2=263732&view=diff
>>
>> ==============================================================================
>> --- cfe/trunk/include/clang/AST/UnresolvedSet.h (original)
>> +++ cfe/trunk/include/clang/AST/UnresolvedSet.h Thu Mar 17 13:28:16 2016
>> @@ -61,9 +61,7 @@ private:
>>    template <unsigned N> friend class UnresolvedSet;
>>    UnresolvedSetImpl() = default;
>>    UnresolvedSetImpl(const UnresolvedSetImpl &) = default;
>> -  UnresolvedSetImpl(UnresolvedSetImpl &&) = default;
>>    UnresolvedSetImpl &operator=(const UnresolvedSetImpl &) = default;
>> -  UnresolvedSetImpl &operator=(UnresolvedSetImpl &&) = default;
>>
>>  public:
>>    // We don't currently support assignment through this iterator, so we
>> might
>>
>>
>> _______________________________________________
>> cfe-commits mailing list
>> cfe-commits at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
>>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20160317/ba740901/attachment-0001.html>


More information about the cfe-commits mailing list