diff --git a/src/test/run-pass/borrowck-preserve-box-in-moved-value.rs b/src/test/run-pass/borrowck-preserve-box-in-moved-value.rs new file mode 100644 index 0000000000000..e8c3b2480d9ae --- /dev/null +++ b/src/test/run-pass/borrowck-preserve-box-in-moved-value.rs @@ -0,0 +1,26 @@ +// exec-env:RUST_POISON_ON_FREE=1 + +// Test that we root `x` even though it is found in immutable memory, +// because it is moved. + +#[feature(managed_boxes)]; + +fn free(x: @T) {} + +struct Foo { + f: @Bar +} + +struct Bar { + g: int +} + +fn lend(x: @Foo) -> int { + let y = &x.f.g; + free(x); // specifically here, if x is not rooted, it will be freed + *y +} + +pub fn main() { + assert_eq!(lend(@Foo {f: @Bar {g: 22}}), 22); +}