How can I compare pointers in Go?

Question

I am building some test code and I try to compare pointers with the <, > operators. My goal is to order elements into a balanced tree structure (implemented by me). For that, I need quick, generic comparation. Following the good old C/C++ customs, my current idea is (...was, at the time of writing this post) to compare them by their pointer addresses.

However, as I've found, it doesn't work. The source

if (&(a.val) < &(b.val)) {

gives the compile error

./pointer.go:40: invalid operation: &a.val < &b.val (operator < not defined on pointer)

a and b are structs with val as (safe) pointer member.

Is it possible to compare safe pointers in go? How?

Is it guaranteed that the order of the pointers remains the same? (For example, I can imagine some GC trickery which also reorders the data.)

Answer 1

Waitting for answers