4b68c965fe
An ICE would occur if the needless range loop was triggered within a procedural macro, because Clippy would try to produce a code suggestion which was invalid, and caused the compiler to crash. This commit takes the same approach which Clippy currently takes to work around this type of crash in the needless pass by value lint, which is to skip the lint if Clippy is inside of a macro.
26 lines
913 B
Rust
26 lines
913 B
Rust
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution.
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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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#![feature(proc_macro_quote, proc_macro_hygiene)]
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extern crate proc_macro;
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use proc_macro::{TokenStream, quote};
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#[proc_macro_derive(ClippyMiniMacroTest)]
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pub fn mini_macro(_: TokenStream) -> TokenStream {
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quote!(
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#[allow(unused)] fn needless_take_by_value(s: String) { println!("{}", s.len()); }
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#[allow(unused)] fn needless_loop(items: &[u8]) {
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for i in 0..items.len() {
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println!("{}", items[i]);
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}
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}
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)
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}
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