52 lines
1.4 KiB
Rust
52 lines
1.4 KiB
Rust
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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// aux-build:internal_unstable.rs
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#![feature(rustc_attrs, allow_internal_unstable)]
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#[macro_use]
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extern crate internal_unstable;
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macro_rules! foo {
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($e: expr, $f: expr) => {{
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$e;
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$f;
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internal_unstable::unstable(); //~ WARN use of unstable
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}}
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}
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#[allow_internal_unstable]
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macro_rules! bar {
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($e: expr) => {{
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foo!($e,
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internal_unstable::unstable());
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internal_unstable::unstable();
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}}
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}
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#[rustc_error]
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fn main() { //~ ERROR
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// ok, the instability is contained.
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call_unstable_allow!();
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construct_unstable_allow!(0);
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// bad.
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pass_through_allow!(internal_unstable::unstable()); //~ WARN use of unstable
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pass_through_noallow!(internal_unstable::unstable()); //~ WARN use of unstable
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println!("{:?}", internal_unstable::unstable()); //~ WARN use of unstable
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bar!(internal_unstable::unstable()); //~ WARN use of unstable
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}
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