| // Check extern items cannot be const + `rustfix` suggests using |
| // extern static. |
| // |
| // #54388: an unused reference to an undefined static may or may not |
| // compile. To sidestep this by using one that *is* defined. |
| |
| // run-rustfix |
| // ignore-wasm32-bare no external library to link to. |
| // ignore-asmjs wasm2js does not support source maps yet |
| // compile-flags: -g |
| #![feature(rustc_private)] |
| extern crate libc; |
| |
| #[link(name = "rust_test_helpers", kind = "static")] |
| extern "C" { |
| static rust_dbg_static_mut: libc::c_int; //~ ERROR extern items cannot be `const` |
| } |
| |
| fn main() { |
| // We suggest turning the (illegal) extern `const` into an extern `static`, |
| // but this also requires `unsafe` (a deny-by-default lint at comment time, |
| // future error; Issue #36247) |
| unsafe { |
| let _x = rust_dbg_static_mut; |
| } |
| } |
