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// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// Regression test for #42602. It used to be that we had
// a dep-graph like
//
// typeck(foo) -> FnOnce -> typeck(bar)
//
// This was fixed by improving the resolution of the `FnOnce` trait
// selection node.
// revisions:cfail1 cfail2 cfail3
// compile-flags:-Zquery-dep-graph
// must-compile-successfully
#![feature(rustc_attrs)]
fn main() {
a::foo();
b::bar();
}
mod a {
#[cfg(cfail1)]
pub fn foo() {
let x = vec![1, 2, 3];
let v = || ::std::mem::drop(x);
v();
}
#[cfg(not(cfail1))]
pub fn foo() {
let x = vec![1, 2, 3, 4];
let v = || ::std::mem::drop(x);
v();
}
}
mod b {
#[rustc_clean(cfg="cfail2")]
#[rustc_clean(cfg="cfail3")]
pub fn bar() {
let x = vec![1, 2, 3];
let v = || ::std::mem::drop(x);
v();
}
}
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