test tests::extra_free ... error: Undefined Behavior: trying to reborrow <248731> for SharedReadWrite permission at alloc96889[0x22], but that tag only grants SharedReadOnly permission for this location
--> /Users/jrmuizel/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:487:1
|
487 | pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| trying to reborrow <248731> for SharedReadWrite permission at alloc96889[0x22], but that tag only grants SharedReadOnly permission for this location
| this error occurs as part of a reborrow at alloc96889[0x0..0x28]
|
= help: this indicates a potential bug in the program: it performed an invalid operation, but the rules it violated are still experimental
= help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/stacked-borrows.md for further information
help: <248731> was created by a retag at offsets [0x0..0x28]
--> src/collect.rs:311:24
|
311 | white.push(s.into());
| ^^^^^^^^
= note: inside `std::ptr::drop_in_place::<dyn cc_box_ptr::CcBoxPtr> - shim(Some(dyn cc_box_ptr::CcBoxPtr))` at /Users/jrmuizel/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:487:1
note: inside `drop_value` at src/lib.rs:922:5
--> src/lib.rs:922:5
|
922 | ptr::drop_in_place(ptr.as_ptr());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: inside `collect::collect_roots` at src/collect.rs:338:18
--> src/collect.rs:338:18
|
338 | unsafe { crate::drop_value(*i) };
| ^^^^^^^^^^^^^^^^^^^^^
note: inside `collect::collect_cycles` at src/collect.rs:192:5
--> src/collect.rs:192:5
|
192 | collect_roots();
| ^^^^^^^^^^^^^^^
note: inside `tests::extra_free` at src/lib.rs:1367:13
--> src/lib.rs:1367:13
|
1367 | collect_cycles(); // <- incorrectly? frees env_a.
| ^^^^^^^^^^^^^^^^
note: inside closure at src/lib.rs:1314:5
--> src/lib.rs:1314:5
|
1313 | #[test]
| ------- in this procedural macro expansion
1314 | / fn extra_free() {
1315 | | struct Env {
1316 | | pub closures: Vec<Cc<RefCell<Clos>>>,
1317 | | pub next: Option<Cc<Env>>,
... |
1381 | | collect_cycles();
1382 | | }
| |_____^
= note: this error originates in the attribute macro `test` (in Nightly builds, run with -Z macro-backtrace for more info)
note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace
