| error[E0805]: malformed `link` attribute input | 
 |   --> $DIR/issue-43926.rs:1:1 | 
 |    | | 
 | LL | #[link(name = "foo", cfg())] | 
 |    | ^^^^^^^^^^^^^^^^^^^^^-----^^ | 
 |    |                      | | 
 |    |                      expected a single argument here | 
 |    | | 
 |    = note: for more information, visit <https://doc.rust-lang.org/reference/items/external-blocks.html#the-link-attribute> | 
 | help: try changing it to one of the following valid forms of the attribute | 
 |    | | 
 | LL - #[link(name = "foo", cfg())] | 
 | LL + #[link(name = "...")] | 
 |    | | 
 | LL - #[link(name = "foo", cfg())] | 
 | LL + #[link(name = "...", import_name_type = "decorated|noprefix|undecorated")] | 
 |    | | 
 | LL - #[link(name = "foo", cfg())] | 
 | LL + #[link(name = "...", kind = "dylib|static|...")] | 
 |    | | 
 | LL - #[link(name = "foo", cfg())] | 
 | LL + #[link(name = "...", kind = "dylib|static|...", wasm_import_module = "...", import_name_type = "decorated|noprefix|undecorated")] | 
 |    | | 
 |    = and 1 other candidate | 
 |  | 
 | error: aborting due to 1 previous error | 
 |  | 
 | For more information about this error, try `rustc --explain E0805`. |