mirror of https://github.com/rust-lang/rust.git
28 lines
609 B
Rust
28 lines
609 B
Rust
|
// Regression test for a weird corner case in our dep-graph reduction
|
||
|
|
// code. When we solve `CoerceUnsized<Foo>`, we find no impls, so we
|
||
|
|
// don't end up with an edge to any HIR nodes, but it still gets
|
||
|
|
// preserved in the dep graph.
|
||
|
|
|
||
|
|
// revisions:rpass1 rpass2
|
||
|
|
// compile-flags: -Z query-dep-graph
|
||
|
|
|
||
|
|
use std::sync::Arc;
|
||
|
|
|
||
|
|
#[cfg(rpass1)]
|
||
|
|
struct Foo { x: usize }
|
||
|
|
|
||
|
|
#[cfg(rpass1)]
|
||
|
|
fn main() {
|
||
|
|
let x: Arc<Foo> = Arc::new(Foo { x: 22 });
|
||
|
|
let y: Arc<Foo> = x;
|
||
|
|
}
|
||
|
|
|
||
|
|
#[cfg(rpass2)]
|
||
|
|
struct FooX { x: usize }
|
||
|
|
|
||
|
|
#[cfg(rpass2)]
|
||
|
|
fn main() {
|
||
|
|
let x: Arc<FooX> = Arc::new(FooX { x: 22 });
|
||
|
|
let y: Arc<FooX> = x;
|
||
|
|
}
|