rust/tests/incremental/issue-39569.rs
2023-01-11 09:32:08 +00:00

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;
}