tests/ui/extern/extern-const.fixed

   1 // Check extern items cannot be const + `rustfix` suggests using
   2 // extern static.
   3 //
   4 // #54388: an unused reference to an undefined static may or may not
   5 // compile. To sidestep this by using one that *is* defined.
   6
   7 // run-rustfix
   8 // ignore-wasm32-bare no external library to link to.
   9 // compile-flags: -g
  10 #![feature(rustc_private)]
  11 extern crate libc;
  12
  13 #[link(name = "rust_test_helpers", kind = "static")]
  14 extern "C" {
  15     static rust_dbg_static_mut: libc::c_int; //~ ERROR extern items cannot be `const`
  16 }
  17
  18 fn main() {
  19     // We suggest turning the (illegal) extern `const` into an extern `static`,
  20     // but this also requires `unsafe` (a deny-by-default lint at comment time,
  21     // future error; Issue #36247)
  22     unsafe {
  23         let _x = rust_dbg_static_mut;
  24     }
  25 }