Uses of pointers non-type template parameters?

Question

Has anyone ever used pointers/references/pointer-to-member (non-type) template parameters?
I\'m not aware of any (sane/real-world) scenario in which that C++ feature sho

Answer 1

The Performance TR has a few example where non-type templates are used to abstract how the hardware is accessed (the hardware stuff starts at page 90; uses of pointers as template arguments are, e.g., on page 113). For example, memory mapped I/O registered would use a fixed pointer to the hardware area. Although I haven't ever used it myself (I only showed Jan Kristofferson how to do it) I'm pretty sure that it is used for development of some embedded devices.