Are there any 100% C++11 compatible implementations of std?

Question

Are there any open-source 100% C++11 compatible(*) implementations of standard C++ library?

(*) An implementation which is proven to match the standard completely or an implementation which has no known defects.

Answer 1

You can look at libc++ of llvm, http://libcxx.llvm.org/, you can access the SVN repos from their Website and one of their main feature is "Correctness as defined by the C++11 standard"