| // 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 | |
| //@ compile-flags: -g | |
| use std::ffi::c_int; | |
| #[link(name = "rust_test_helpers", kind = "static")] | |
| extern "C" { | |
| static rust_dbg_static_mut: 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; | |
| } | |
| } |