41 lines
1.1 KiB
Rust
41 lines
1.1 KiB
Rust
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// Copyright 2016 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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// Regression test for an obscure issue with the projection cache.
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fn into_iter<I: Iterator>(a: &I) -> Groups<I> {
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Groups { _a: a }
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}
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pub struct Groups<'a, I: 'a> {
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_a: &'a I,
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}
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impl<'a, I: Iterator> Iterator for Groups<'a, I> {
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type Item = Group<'a, I>;
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fn next(&mut self) -> Option<Self::Item> {
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None
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}
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}
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pub struct Group<'a, I: Iterator + 'a>
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where I::Item: 'a // <-- needed to trigger ICE!
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{
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_phantom: &'a (),
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_ice_trigger: I::Item, // <-- needed to trigger ICE!
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}
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fn main() {
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let _ = into_iter(&[0].iter().map(|_| 0)).map(|grp| {
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let _g = grp;
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});
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}
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