[stkdump]

> And it's worth noting that addition of pointers is only really a trivial op in non-segmented architectures without any kind of pointer tagging anyways. The window on that assumption opened with 32bit archs and will probably close soon as CPU security primitives evolve.

It was trivial on char* in the 16 bit segmented days (artihmetic was only applied to the offset part of the pointer, if you had a far pointer at all), unless you absolutely needed the huge memory model, which was discouraged anyway because of its slowness. What it did mean though, was that code and data lived in something akin to separate address spaces. But portable modern C code usually doesn't use performance tricks like self-modifying code anymore anyway, because even if it wasn't problematic it wouldn't really be needed anymore.