| // Copyright 2018 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // 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. |
| |
| #![feature(decl_macro)] |
| |
| macro_rules! returns_isize( |
| ($ident:ident) => ( |
| fn $ident() -> isize; |
| ) |
| ); |
| |
| macro takes_u32_returns_u32($ident:ident) { |
| fn $ident (arg: u32) -> u32; |
| } |
| |
| macro_rules! emits_nothing( |
| () => () |
| ); |
| |
| #[link(name = "rust_test_helpers", kind = "static")] |
| extern { |
| returns_isize!(rust_get_test_int); |
| //~^ ERROR macro invocations in `extern {}` blocks are experimental |
| takes_u32_returns_u32!(rust_dbg_extern_identity_u32); |
| //~^ ERROR macro invocations in `extern {}` blocks are experimental |
| emits_nothing!(); |
| //~^ ERROR macro invocations in `extern {}` blocks are experimental |
| } |