I remember hearing from somebody (either a Herb Sutter talk, or our OpenCL/OpenMP/etc. compiler guru at work) that C11 and C++11 differ in some subtle ways. For most things, users wouldn't be able to ...

It's a bit late for me to find chapter and verse, but I seem to recall there are subtly different aliasing rules between the two. Other areas where I was surprised—or at least dismayed and/or ...