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[rustc.git] / src / test / ui / dep-graph / dep-graph-trait-impl-two-traits.rs

// Test that adding an impl to a trait `Foo` does not affect functions
// that only use `Bar`, so long as they do not have methods in common.

// incremental
// compile-flags: -Z query-dep-graph

#![feature(rustc_attrs)]
#![allow(warnings)]

fn main() { }

pub trait Foo: Sized {
    fn foo(self) { }
}

pub trait Bar: Sized {
    fn bar(self) { }
}

mod x {
    use {Foo, Bar};

    #[rustc_if_this_changed]
    impl Foo for char { }

    impl Bar for char { }
}

mod y {
    use {Foo, Bar};

    #[rustc_then_this_would_need(typeck)] //~ ERROR OK
    pub fn call_bar() {
        char::bar('a');
    }
}

mod z {
    use y;

    #[rustc_then_this_would_need(typeck)] //~ ERROR no path
    pub fn z() {
        y::call_bar();
    }
}