rust/tests/ui/static/safe-extern-statics-mut.rs

// aux-build:extern-statics.rs

extern crate extern_statics;
use extern_statics::*;

extern "C" {
    static mut B: u8;
}

fn main() {
    let b = B; //~ ERROR use of mutable static is unsafe
    let rb = &B; //~ ERROR use of mutable static is unsafe
    //~^ WARN shared reference of mutable static is discouraged [static_mut_ref]
    let xb = XB; //~ ERROR use of mutable static is unsafe
    let xrb = &XB; //~ ERROR use of mutable static is unsafe
    //~^ WARN shared reference of mutable static is discouraged [static_mut_ref]
}