error[E0080]: could not evaluate static initializer --> $DIR/ptr_arith.rs:9:13 | LL | let x = &0 as *const _ as usize; | ^^^^^^^^^^^^^^^^^^^^^^^ "exposing pointers" needs an rfc before being allowed inside constants error[E0080]: could not evaluate static initializer --> $DIR/ptr_arith.rs:17:14 | LL | let _v = x + 0; | ^ unable to turn pointer into raw bytes | = help: this code performed an operation that depends on the underlying bytes representing a pointer = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported warning: skipping const checks | help: skipping check that does not even have a feature gate --> $DIR/ptr_arith.rs:9:13 | LL | let x = &0 as *const _ as usize; | ^^^^^^^^^^^^^^^^^^^^^^^ error: aborting due to 2 previous errors; 1 warning emitted For more information about this error, try `rustc --explain E0080`.