#![forbid(non_upper_case_globals)] #![allow(dead_code)] static foo: isize = 1; //~ ERROR static variable `foo` should have an upper case name static mut bar: isize = 1; //~ ERROR static variable `bar` should have an upper case name #[no_mangle] pub static extern_foo: isize = 1; // OK, because #[no_mangle] supersedes the warning fn main() { }