summaryrefslogtreecommitdiffstats
path: root/src/test/ui/dep-graph/dep-graph-variance-alias.rs
blob: 008434696d63ddfc7102070ba97c9c14e7edf58e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
// Test that changing what a `type` points to does not go unnoticed
// by the variance analysis.

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

#![feature(rustc_attrs)]
#![allow(dead_code)]
#![allow(unused_variables)]
fn main() {}

#[rustc_if_this_changed]
struct Foo<T> {
    f: T,
}

type TypeAlias<T> = Foo<T>;

#[rustc_then_this_would_need(variances_of)] //~ ERROR OK
struct Use<T> {
    x: TypeAlias<T>,
}