The header <memory> uses interlocked intrinsics such as _InterlockedIncrement Intrinsic Functions to implement thread-safety in shared_ptr Class. Unfortunately, some other header files declare the interlocked intrinsics in a way that is incompatible with the declarations in <memory>.

If you have trouble compiling your program because of conflicting definitions of interlocked intrinsics, define _DO_NOT_DECLARE_INTERLOCKED_INTRINSICS_IN_MEMORY, which prevents <memory> from declaring those functions.

Header: <memory>

Namespace: std::tr1

Reference