Erroneous code example:
```compile_fail,E0454
-#[link(name = "")] extern {}
+#[link(name = "")] extern "C" {}
// error: `#[link(name = "")]` given with empty name
```
name. Example:
```no_run
-#[link(name = "some_lib")] extern {} // ok!
+#[link(name = "some_lib")] extern "C" {} // ok!
```