rust/src/test/compile-fail/dep-graph-trait-impl.rs
2016-01-06 11:28:53 -05:00

75 lines
2.0 KiB
Rust

// Copyright 2012-2014 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.
// Test that two unrelated functions have no trans dependency.
#![feature(rustc_attrs)]
#![allow(warnings)]
fn main() { }
pub trait Foo: Sized {
fn method(self) { }
}
mod x {
use Foo;
#[rustc_if_this_changed]
impl Foo for char { }
impl Foo for u32 { }
}
mod y {
use Foo;
#[rustc_then_this_would_need(TypeckItemBody)] //~ ERROR OK
#[rustc_then_this_would_need(TransCrateItem)] //~ ERROR OK
pub fn with_char() {
char::method('a');
}
// FIXME(#30741) tcx fulfillment cache not tracked
#[rustc_then_this_would_need(TypeckItemBody)] //~ ERROR no path
#[rustc_then_this_would_need(TransCrateItem)] //~ ERROR no path
pub fn take_foo_with_char() {
take_foo::<char>('a');
}
#[rustc_then_this_would_need(TypeckItemBody)] //~ ERROR OK
#[rustc_then_this_would_need(TransCrateItem)] //~ ERROR OK
pub fn with_u32() {
u32::method(22);
}
// FIXME(#30741) tcx fulfillment cache not tracked
#[rustc_then_this_would_need(TypeckItemBody)] //~ ERROR no path
#[rustc_then_this_would_need(TransCrateItem)] //~ ERROR no path
pub fn take_foo_with_u32() {
take_foo::<u32>(22);
}
pub fn take_foo<T:Foo>(t: T) { }
}
mod z {
use y;
// These are expected to yield errors, because changes to `x`
// affect the BODY of `y`, but not its signature.
#[rustc_then_this_would_need(TypeckItemBody)] //~ ERROR no path
#[rustc_then_this_would_need(TransCrateItem)] //~ ERROR no path
pub fn z() {
y::with_char();
y::with_u32();
}
}