--- /dev/null
+// 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 no external library to link to.
+// compile-flags: -g -Z continue-parse-after-error
+#![feature(libc)]
+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;
+ }
+}
-// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
+// Check extern items cannot be const + `rustfix` suggests using
+// extern static.
//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
+// #54388: an unused reference to an undefined static may or may not
+// compile. To sidestep this by using one that *is* defined.
-// FIXME(#54388): re-enable rustfix later, when this test has consistent output across targets
-// compile-flags: -Z continue-parse-after-error
+// run-rustfix
+// ignore-wasm32 no external library to link to.
+// compile-flags: -g -Z continue-parse-after-error
+#![feature(libc)]
+extern crate libc;
+#[link(name = "rust_test_helpers", kind = "static")]
extern "C" {
- const C: u8; //~ ERROR extern items cannot be `const`
+ const rust_dbg_static_mut: libc::c_int; //~ ERROR extern items cannot be `const`
}
fn main() {
// but this also requires `unsafe` (a deny-by-default lint at comment time,
// future error; Issue #36247)
unsafe {
- let _x = C;
+ let _x = rust_dbg_static_mut;
}
}
error: extern items cannot be `const`
--> $DIR/extern-const.rs:15:5
|
-LL | const C: u8; //~ ERROR extern items cannot be `const`
+LL | const rust_dbg_static_mut: libc::c_int; //~ ERROR extern items cannot be `const`
| ^^^^^ help: try using a static value: `static`
error: aborting due to previous error