Re: [Boost-users] Valgrind false positive in make_shared

17 Nov 2010


      Frank Mori Hess wrote:
...
On Tuesday 16 November 2010, Peter Dimov wrote:
...
Interesting... which version of GCC? Without the static_cast, it
shouldn't compile, as rvalue references no longer bind to lvalues. In
fact, I see that I added the static_cast in [61574] for that very 
reason.
$ gcc --version
gcc (Debian 4.3.2-1.1) 4.3.2
Its implementation of std::forward looks like:
template<typename _Tp>
    inline _Tp&&
    forward(typename std::identity<_Tp>::type&& __t)
    { return __t; }
So it appears that we need to revert to the old forward for 4.3 and earlier. 
The easiest would be to just use std::forward, but unfortunately, I remember 
that some earlier versions of the standard library didn't have it. :-/