On Mar 18, 2011, at 10:58 PM, mercurio7891 wrote: > I am using clang with xcode 4 along with the -std=c++0x option. None of the compilers in XCode 4 support C++0x. We recognize the option, but several majors features do not work, as you've noticed. There's been a lot of recent work on trunk, if you're interested. John.