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// Test that when a trait impl changes, fns whose body uses that trait
// must also be recompiled.
//@ incremental
//@ compile-flags: -Z query-dep-graph
#![feature(rustc_attrs)]
#![allow(warnings)]
fn main() { }
pub trait Foo: Sized {
type T;
fn method(self) { }
}
mod x {
use Foo;
#[rustc_if_this_changed]
impl Foo for char { type T = char; }
impl Foo for u32 { type T = u32; }
}
mod y {
use Foo;
#[rustc_then_this_would_need(typeck)] //~ ERROR OK
pub fn use_char_assoc() {
// Careful here: in the representation, <char as Foo>::T gets
// normalized away, so at a certain point we had no edge to
// codegen. (But now codegen just depends on typeck.)
let x: <char as Foo>::T = 'a';
}
pub fn take_foo<T:Foo>(t: T) { }
}
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