error: any use of this value will cause an error --> $DIR/dangling_raw_ptr.rs:1:1 | LL | / const FOO: *const u32 = { LL | | let x = 42; LL | | &x LL | | }; | |__^ encountered dangling pointer in final constant | = note: `#[deny(const_err)]` on by default error: aborting due to previous error