8284df9e7c
That is, only a single expression or item gets parsed, so if there are
any extra tokens (e.g. the start of another item/expression) the user
should be told, rather than silently dropping them.
An example:
macro_rules! foo {
() => {
println("hi");
println("bye);
}
}
would expand to just `println("hi")`, which is almost certainly not
what the programmer wanted.
Fixes #8012.
27 lines
746 B
Rust
27 lines
746 B
Rust
// Copyright 2013 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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macro_rules! ignored_item {
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() => {
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fn foo() {}
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fn bar() {} //~ ERROR macro expansion ignores token `fn`
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}
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}
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macro_rules! ignored_expr {
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() => ( 1, 2 ) //~ ERROR macro expansion ignores token `,`
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}
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ignored_item!()
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fn main() {
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ignored_expr!()
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}
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