dcd4cef119
It's not clear what this means, because a macro in item position can expand to
zero or more items. For now we disallow it, which is technically a
[breaking-change]
but is landing without an RFC. The `pub` keyword previously had no effect,
which seems quite unintended.
Fixes #18317.
Fixes #14660.
29 lines
784 B
Rust
29 lines
784 B
Rust
// 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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// Issue #14660
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macro_rules! priv_x { () => {
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static x: u32 = 0;
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}}
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macro_rules! pub_x { () => {
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pub priv_x!(); //~ ERROR can't qualify macro invocation with `pub`
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//~^ HELP try adjusting the macro to put `pub` inside the invocation
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}}
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mod foo {
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pub_x!();
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}
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fn main() {
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let y: u32 = foo::x;
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}
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