Re: [boost] [smart_ptr] !defined(BOOST_NO_CXX11_SMART_PTR) does notimply !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)

Subject: Re: [boost] [smart_ptr] !defined(BOOST_NO_CXX11_SMART_PTR) does notimply !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
From: Howard Hinnant (howard.hinnant_at_[hidden])
Date: 2013-02-09 11:16:34

On Feb 8, 2013, at 11:22 PM, Michel Morin <mimomorin_at_[hidden]> wrote:

> Peter Dimov wrote:
>> Michel Morin wrote:
>> 
>>> `!defined(BOOST_NO_CXX11_SMART_PTR)` does not necessarily mean that
>>> the compiler support of rvalue references is available. For example,
>> 
>> 
>> How could the standard library have std::unique_ptr without the compiler
>> supporting rvalue references?
> 
> Seems like libc++ uses rvalue-ref emulation:
>  http://llvm.org/svn/llvm-project/libcxx/trunk/include/memory

Yeah, but it isn't very good emulation.  I don't recommend it.

Howard