1 error: pointers cannot be cast to integers during const eval
2 --> $DIR/issue-17458.rs:1:28
4 LL | static X: usize = unsafe { core::ptr::null::<usize>() as usize };
5 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
7 = note: at compile-time, pointers do not have an integer value
8 = note: avoiding this restriction via `transmute`, `union`, or raw pointers leads to compile-time undefined behavior
10 error: aborting due to previous error