Closed
Description
auto-reduced (treereduce-rust):
//@compile-flags: --edition=2024 -Zvalidate-mir
use std::{
cell::{Cell, RefCell},
future::Future,
marker::Unpin,
panic,
pin::Pin,
ptr,
rc::Rc,
task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
};
struct Defer<T> {
ready: bool,
value: Option<T>,
}
impl<T: Unpin> Future for Defer<T> {
type Output = T;
fn poll(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
if self.ready {
Poll::Ready(self.value.take().unwrap())
} else {
Poll::Pending
}
}
}
struct Allocator {
data: RefCell<Vec<bool>>,
failing_op: usize,
cur_ops: Cell<usize>,
}
impl Allocator {
fn new(failing_op: usize) -> Self {
Allocator {
failing_op,
cur_ops: Cell::new(0),
data: RefCell::new(vec![]),
}
}
fn alloc(&self) -> impl Future + '_ {
let mut data = self.data.borrow_mut();
let addr = data.len();
Defer {
ready: false,
value: Some(Ptr(addr, self)),
}
}
}
struct Ptr<'a>(usize, &'a Allocator);
impl<'a> Drop for Ptr<'a> {
fn drop(&mut self) {}
}
async fn vec_unreachable(a: Rc<Allocator>) {
let _x = vec![a.alloc().await, a.alloc().await, a.alloc().await, return];
}
fn run_test<F, G>(cx: &mut Context<'_>, ref f: F)
where
F: Fn(Rc<Allocator>) -> G,
G:,
{
for polls in 0.. {
let first_alloc = Rc::new(Allocator::new(usize::MAX));
let mut fut = Box::pin(f(first_alloc.clone()));
drop(fut);
}
}
fn clone_waker(data: *const ()) -> RawWaker {
RawWaker::new(data, &RawWakerVTable::new(clone_waker, drop, drop, drop))
}
fn main() {
let waker = unsafe { Waker::from_raw(clone_waker(ptr::null())) };
let context = &mut Context::from_waker(&waker);
run_test(context, |a| vec_unreachable(a));
}original code
original:
// Test that values are not leaked in async functions, even in the cases where:
// * Dropping one of the values panics while running the future.
// * The future is dropped at one of its suspend points.
// * Dropping one of the values panics while dropping the future.
//@ run-pass
//@ needs-unwind
//@ edition:2018
#![allow(unused)]
use std::{
cell::{Cell, RefCell},
future::Future,
marker::Unpin,
panic,
pin::Pin,
ptr,
rc::Rc,
task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
};
struct InjectedFailure;
struct Defer<T> {
ready: bool,
value: Option<T>,
}
impl<T: Unpin> Future for Defer<T> {
type Output = T;
fn poll(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
if self.ready {
Poll::Ready(self.value.take().unwrap())
} else {
self.ready = true;
Poll::Pending
}
}
}
/// Allocator tracks the creation and destruction of `Ptr`s.
/// The `failing_op`-th operation will panic.
struct Allocator {
data: RefCell<Vec<bool>>,
failing_op: usize,
cur_ops: Cell<usize>,
}
impl panic::UnwindSafe for Allocator {}
impl panic::RefUnwindSafe for Allocator {}
impl Drop for Allocator {
fn drop(&mut self) {
let data = self.data.borrow();
if data.iter().any(|d| *d) {
panic!("missing free: {:?}", data);
}
}
}
impl Allocator {
fn new(failing_op: usize) -> Self {
Allocator { failing_op, cur_ops: Cell::new(0), data: RefCell::new(vec![]) }
}
fn alloc(&self) -> impl Future<Output = Ptr<'_>> + '_ {
self.fallible_operation();
let mut data = self.data.borrow_mut();
let addr = data.len();
data.push(true);
Defer { ready: false, value: Some(Ptr(addr, self)) }
}
fn fallible_operation(&self) {
self.cur_ops.set(self.cur_ops.get() + 1);
if self.cur_ops.get() == self.failing_op {
panic::panic_any(InjectedFailure);
}
}
}
// Type that tracks whether it was dropped and can panic when it's created or
// destroyed.
struct Ptr<'a>(usize, &'a Allocator);
impl<'a> Drop for Ptr<'a> {
fn drop(&mut self) {
match self.1.data.borrow_mut()[self.0] {
false => panic!("double free at index {:?}", self.0),
ref mut d => *d = false,
}
self.1.fallible_operation();
}
}
async fn dynamic_init(a: Rc<Allocator>, c: bool) {
let _x;
if c {
_x = Some(a.alloc().await);
}
}
async fn dynamic_drop(a: Rc<Allocator>, c: bool) {
let x = a.alloc().await;
if c {
Some(x)
} else {
None
};
}
struct TwoPtrs<'a>(Ptr<'a>, Ptr<'a>);
async fn struct_dynamic_drop(a: Rc<Allocator>, c0: bool, c1: bool, c: bool) {
for i in 0..2 {
let x;
let y;
if (c0 && i == 0) || (c1 && i == 1) {
x = (a.alloc().await, a.alloc().await, a.alloc().await);
y = TwoPtrs(a.alloc().await, a.alloc().await);
if c {
drop(x.1);
a.alloc().await;
drop(y.0);
a.alloc().await;
}
}
}
}
async fn field_assignment(a: Rc<Allocator>, c0: bool) {
let mut x = (TwoPtrs(a.alloc().await, a.alloc().await), a.alloc().await);
x.1 = a.alloc().await;
x.1 = a.alloc().await;
let f = (x.0).0;
a.alloc().await;
if c0 {
(x.0).0 = f;
}
a.alloc().await;
}
async fn assignment(a: Rc<Allocator>, c0: bool, c1: bool) {
let mut _v = a.alloc().await;
let mut _w = a.alloc().await;
if c0 {
drop(_v);
}
_v = _w;
if c1 {
_w = a.alloc().await;
}
}
async fn array_simple(a: Rc<Allocator>) {
let _x = [a.alloc().await, a.alloc().await, a.alloc().await, a.alloc().await];
}
async fn vec_simple(a: Rc<Allocator>) {
let _x = vec![a.alloc().await, a.alloc().await, a.alloc().await, a.alloc().await];
}
async fn mixed_drop_and_nondrop(a: Rc<Allocator>) {
// check that destructor panics handle drop
// and non-drop blocks in the same scope correctly.
//
// Surprisingly enough, this used to not work.
let (x, y, z);
x = a.alloc().await;
y = 5;
z = a.alloc().await;
}
#[allow(unreachable_code)]
async fn vec_unreachable(a: Rc<Allocator>) {
let _x = vec![a.alloc().await, a.alloc().await, a.alloc().await, return];
}
async fn slice_pattern_one_of(a: Rc<Allocator>, i: usize) {
let array = [a.alloc().await, a.alloc().await, a.alloc().await, a.alloc().await];
let _x = match i {
0 => {
let [a, ..] = array;
a
}
1 => {
let [_, a, ..] = array;
a
}
2 => {
let [_, _, a, _] = array;
a
}
3 => {
let [_, _, _, a] = array;
a
}
_ => panic!("unmatched"),
};
a.alloc().await;
}
async fn subslice_pattern_from_end_with_drop(a: Rc<Allocator>, arg: bool, arg2: bool) {
let arr = [a.alloc().await, a.alloc().await, a.alloc().await, a.alloc().await, a.alloc().await];
if arg2 {
drop(arr);
return;
}
if arg {
let [.., _x, _] = arr;
} else {
let [_, _y @ ..] = arr;
}
a.alloc().await;
}
async fn subslice_pattern_reassign(a: Rc<Allocator>) {
let mut ar = [a.alloc().await, a.alloc().await, a.alloc().await];
let [_, _, _x] = ar;
ar = [a.alloc().await, a.alloc().await, a.alloc().await];
let [_, _y @ ..] = ar;
a.alloc().await;
}
async fn move_ref_pattern(a: Rc<Allocator>) {
let mut tup = (a.alloc().await, a.alloc().await, a.alloc().await, a.alloc().await);
let (ref _a, ref mut _b, _c, mut _d) = tup;
a.alloc().await;
}
fn run_test<F, G>(cx: &mut Context<'_>, ref f: F)
where
F: Fn(Rc<Allocator>) -> G,
G: Future<Output = ()>,
{
for polls in 0.. {
// Run without any panics to find which operations happen after the
// penultimate `poll`.
let first_alloc = Rc::new(Allocator::new(usize::MAX));
let mut fut = Box::pin(f(first_alloc.clone()));
let mut ops_before_last_poll = 0;
let mut completed = false;
for _ in 0..polls {
ops_before_last_poll = first_alloc.cur_ops.get();
if let Poll::Ready(()) = fut.as_mut().poll(cx) {
completed = true;
}
}
drop(fut);
// Start at `ops_before_last_poll` so that we will always be able to
// `poll` the expected number of times.
for failing_op in ops_before_last_poll..first_alloc.cur_ops.get() {
let alloc = Rc::new(Allocator::new(failing_op + 1));
let f = &f;
let cx = &mut *cx;
let result = panic::catch_unwind(panic::AssertUnwindSafe(move || {
let mut fut = Box::pin(f(alloc));
for _ in 0..polls {
let _ = fut.as_mut().poll(cx);
}
drop(fut);
}));
match result {
Ok(..) => panic!("test executed more ops on first call"),
Err(e) => {
if e.downcast_ref::<InjectedFailure>().is_none() {
panic::resume_unwind(e);
}
}
}
}
if completed {
break;
}
}
}
fn clone_waker(data: *const ()) -> RawWaker {
RawWaker::new(data, &RawWakerVTable::new(clone_waker, drop, drop, drop))
}
fn main() {
let waker = unsafe { Waker::from_raw(clone_waker(ptr::null())) };
let context = &mut Context::from_waker(&waker);
run_test(context, |a| dynamic_init(a, false));
run_test(context, |a| dynamic_init(a, true));
run_test(context, |a| dynamic_drop(a, false));
run_test(context, |a| dynamic_drop(a, true));
run_test(context, |a| assignment(a, false, false));
run_test(context, |a| assignment(a, false, true));
run_test(context, |a| assignment(a, true, false));
run_test(context, |a| assignment(a, true, true));
run_test(context, |a| array_simple(a));
run_test(context, |a| vec_simple(a));
run_test(context, |a| vec_unreachable(a));
run_test(context, |a| struct_dynamic_drop(a, false, false, false));
run_test(context, |a| struct_dynamic_drop(a, false, false, true));
run_test(context, |a| struct_dynamic_drop(a, false, true, false));
run_test(context, |a| struct_dynamic_drop(a, false, true, true));
run_test(context, |a| struct_dynamic_drop(a, true, false, false));
run_test(context, |a| struct_dynamic_drop(a, true, false, true));
run_test(context, |a| struct_dynamic_drop(a, true, true, false));
run_test(context, |a| struct_dynamic_drop(a, true, true, true));
run_test(context, |a| field_assignment(a, false));
run_test(context, |a| field_assignment(a, true));
run_test(context, |a| mixed_drop_and_nondrop(a));
run_test(context, |a| slice_pattern_one_of(a, 0));
run_test(context, |a| slice_pattern_one_of(a, 1));
run_test(context, |a| slice_pattern_one_of(a, 2));
run_test(context, |a| slice_pattern_one_of(a, 3));
run_test(context, |a| subslice_pattern_from_end_with_drop(a, true, true));
run_test(context, |a| subslice_pattern_from_end_with_drop(a, true, false));
run_test(context, |a| subslice_pattern_from_end_with_drop(a, false, true));
run_test(context, |a| subslice_pattern_from_end_with_drop(a, false, false));
run_test(context, |a| subslice_pattern_reassign(a));
run_test(context, |a| move_ref_pattern(a));
}Version information
rustc 1.87.0-nightly (3b022d8ce 2025-02-18)
binary: rustc
commit-hash: 3b022d8ceea570db9730be34d964f0cc663a567f
commit-date: 2025-02-18
host: x86_64-unknown-linux-gnu
release: 1.87.0-nightly
LLVM version: 20.1.0
Possibly related line of code:
rust/compiler/rustc_mir_transform/src/validate.rs
Lines 74 to 86 in 3b022d8
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc --edition=2024 -Zvalidate-mir
Program output
warning: unused import: `panic`
--> /tmp/icemaker_global_tempdir.RCp5KYktJql7/rustc_testrunner_tmpdir_reporting.UlnYvRre65To/mvce.rs:5:5
|
5 | panic,
| ^^^^^
|
= note: `#[warn(unused_imports)]` on by default
warning: variable does not need to be mutable
--> /tmp/icemaker_global_tempdir.RCp5KYktJql7/rustc_testrunner_tmpdir_reporting.UlnYvRre65To/mvce.rs:43:13
|
43 | let mut data = self.data.borrow_mut();
| ----^^^^
| |
| help: remove this `mut`
|
= note: `#[warn(unused_mut)]` on by default
warning: unreachable expression
--> /tmp/icemaker_global_tempdir.RCp5KYktJql7/rustc_testrunner_tmpdir_reporting.UlnYvRre65To/mvce.rs:60:14
|
60 | let _x = vec![a.alloc().await, a.alloc().await, a.alloc().await, return];
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^------^
| | |
| | any code following this expression is unreachable
| unreachable expression
|
= note: `#[warn(unreachable_code)]` on by default
= note: this warning originates in the macro `vec` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: unused variable: `cx`
--> /tmp/icemaker_global_tempdir.RCp5KYktJql7/rustc_testrunner_tmpdir_reporting.UlnYvRre65To/mvce.rs:19:39
|
19 | fn poll(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
| ^^ help: if this is intentional, prefix it with an underscore: `_cx`
|
= note: `#[warn(unused_variables)]` on by default
warning: unused variable: `polls`
--> /tmp/icemaker_global_tempdir.RCp5KYktJql7/rustc_testrunner_tmpdir_reporting.UlnYvRre65To/mvce.rs:68:9
|
68 | for polls in 0.. {
| ^^^^^ help: if this is intentional, prefix it with an underscore: `_polls`
warning: unused variable: `cx`
--> /tmp/icemaker_global_tempdir.RCp5KYktJql7/rustc_testrunner_tmpdir_reporting.UlnYvRre65To/mvce.rs:63:19
|
63 | fn run_test<F, G>(cx: &mut Context<'_>, ref f: F)
| ^^ help: if this is intentional, prefix it with an underscore: `_cx`
warning: variable does not need to be mutable
--> /tmp/icemaker_global_tempdir.RCp5KYktJql7/rustc_testrunner_tmpdir_reporting.UlnYvRre65To/mvce.rs:70:13
|
70 | let mut fut = Box::pin(f(first_alloc.clone()));
| ----^^^
| |
| help: remove this `mut`
warning: fields `failing_op` and `cur_ops` are never read
--> /tmp/icemaker_global_tempdir.RCp5KYktJql7/rustc_testrunner_tmpdir_reporting.UlnYvRre65To/mvce.rs:30:5
|
28 | struct Allocator {
| --------- fields in this struct
29 | data: RefCell<Vec<bool>>,
30 | failing_op: usize,
| ^^^^^^^^^^
31 | cur_ops: Cell<usize>,
| ^^^^^^^
|
= note: `#[warn(dead_code)]` on by default
warning: fields `0` and `1` are never read
--> /tmp/icemaker_global_tempdir.RCp5KYktJql7/rustc_testrunner_tmpdir_reporting.UlnYvRre65To/mvce.rs:54:16
|
54 | struct Ptr<'a>(usize, &'a Allocator);
| --- ^^^^^ ^^^^^^^^^^^^^
| |
| fields in this struct
|
= help: consider removing these fields
thread 'rustc' panicked at compiler/rustc_mir_transform/src/validate.rs:80:25:
broken MIR in DropGlue(DefId(2:2857 ~ core[b00e]::ptr::drop_in_place), Some(Coroutine(DefId(0:45 ~ mvce[7c74]::vec_unreachable::{closure#0}), [(), std::future::ResumeTy, (), (), CoroutineWitness(DefId(0:45 ~ mvce[7c74]::vec_unreachable::{closure#0}), []), (std::rc::Rc<Allocator, std::alloc::Global>,)]))) (after pass MentionedItems) at bb39[0]:
Transmute is not supported in non-runtime phase Analysis(PostCleanup).
stack backtrace:
0: 0x7a5dde3878b4 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb1dbb105bd2d1c24
1: 0x7a5ddea1a26c - core::fmt::write::h7da158f89ab4458f
2: 0x7a5ddfb9c251 - std::io::Write::write_fmt::h39957863a56e5cac
3: 0x7a5dde387712 - std::sys::backtrace::BacktraceLock::print::h3be96afe5576ef80
4: 0x7a5dde389f1e - std::panicking::default_hook::{{closure}}::h272c7564c84a1176
5: 0x7a5dde389af4 - std::panicking::default_hook::he5fe1aaab2f25425
6: 0x7a5ddd4d9237 - std[e3e91186ef571fb2]::panicking::update_hook::<alloc[534667ecbc51a4ea]::boxed::Box<rustc_driver_impl[8214a48106e737a0]::install_ice_hook::{closure#1}>>::{closure#0}
7: 0x7a5dde38a793 - std::panicking::rust_panic_with_hook::hc0ab1a47eab84af9
8: 0x7a5dde38a48a - std::panicking::begin_panic_handler::{{closure}}::hc3f7509381a5f194
9: 0x7a5dde387d79 - std::sys::backtrace::__rust_end_short_backtrace::h0946700dcbd1e531
10: 0x7a5dde38a14d - rust_begin_unwind
11: 0x7a5ddb043850 - core::panicking::panic_fmt::hc766ac463fa3fc75
12: 0x7a5ddc0b5112 - <rustc_mir_transform[c38770258410c05c]::validate::CfgChecker>::fail::<alloc[534667ecbc51a4ea]::string::String>
13: 0x7a5ddf429ca0 - <rustc_mir_transform[c38770258410c05c]::validate::Validator as rustc_mir_transform[c38770258410c05c]::pass_manager::MirPass>::run_pass
14: 0x7a5ddcdcf765 - rustc_mir_transform[c38770258410c05c]::pass_manager::validate_body
15: 0x7a5ddea05a68 - rustc_mir_transform[c38770258410c05c]::pass_manager::run_passes_inner
16: 0x7a5ddf40660a - rustc_mir_transform[c38770258410c05c]::shim::make_shim
17: 0x7a5ddf4057af - rustc_query_impl[d25549a6c4185600]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[d25549a6c4185600]::query_impl::mir_shims::dynamic_query::{closure#2}::{closure#0}, rustc_middle[197a7b3770fbd787]::query::erase::Erased<[u8; 8usize]>>
18: 0x7a5ddf405773 - <rustc_query_impl[d25549a6c4185600]::query_impl::mir_shims::dynamic_query::{closure#2} as core[b00e6010bfa5719a]::ops::function::FnOnce<(rustc_middle[197a7b3770fbd787]::ty::context::TyCtxt, rustc_middle[197a7b3770fbd787]::ty::instance::InstanceKind)>>::call_once
19: 0x7a5ddf483780 - rustc_query_system[22c8932483092702]::query::plumbing::try_execute_query::<rustc_query_impl[d25549a6c4185600]::DynamicConfig<rustc_query_system[22c8932483092702]::query::caches::DefaultCache<rustc_middle[197a7b3770fbd787]::ty::instance::InstanceKind, rustc_middle[197a7b3770fbd787]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[d25549a6c4185600]::plumbing::QueryCtxt, false>
20: 0x7a5ddf4834f1 - rustc_query_impl[d25549a6c4185600]::query_impl::mir_shims::get_query_non_incr::__rust_end_short_backtrace
21: 0x7a5ddef24174 - <rustc_middle[197a7b3770fbd787]::ty::context::TyCtxt>::instance_mir
22: 0x7a5ddb79eb29 - rustc_monomorphize[1ec9e6f51add3954]::mono_checks::check_mono_item
23: 0x7a5ddef1eaa0 - rustc_query_impl[d25549a6c4185600]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[d25549a6c4185600]::query_impl::check_mono_item::dynamic_query::{closure#2}::{closure#0}, rustc_middle[197a7b3770fbd787]::query::erase::Erased<[u8; 0usize]>>
24: 0x7a5ddef1e3b3 - rustc_query_system[22c8932483092702]::query::plumbing::try_execute_query::<rustc_query_impl[d25549a6c4185600]::DynamicConfig<rustc_query_system[22c8932483092702]::query::caches::DefaultCache<rustc_middle[197a7b3770fbd787]::ty::instance::Instance, rustc_middle[197a7b3770fbd787]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[d25549a6c4185600]::plumbing::QueryCtxt, false>
25: 0x7a5ddef1e063 - rustc_query_impl[d25549a6c4185600]::query_impl::check_mono_item::get_query_non_incr::__rust_end_short_backtrace
26: 0x7a5ddb78bae0 - rustc_monomorphize[1ec9e6f51add3954]::collector::items_of_instance
27: 0x7a5ddf47f5b2 - rustc_query_impl[d25549a6c4185600]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[d25549a6c4185600]::query_impl::items_of_instance::dynamic_query::{closure#2}::{closure#0}, rustc_middle[197a7b3770fbd787]::query::erase::Erased<[u8; 32usize]>>
28: 0x7a5ddf47ede9 - rustc_query_system[22c8932483092702]::query::plumbing::try_execute_query::<rustc_query_impl[d25549a6c4185600]::DynamicConfig<rustc_query_system[22c8932483092702]::query::caches::DefaultCache<(rustc_middle[197a7b3770fbd787]::ty::instance::Instance, rustc_middle[197a7b3770fbd787]::mir::mono::CollectionMode), rustc_middle[197a7b3770fbd787]::query::erase::Erased<[u8; 32usize]>>, false, false, false>, rustc_query_impl[d25549a6c4185600]::plumbing::QueryCtxt, false>
29: 0x7a5ddf47ea2c - rustc_query_impl[d25549a6c4185600]::query_impl::items_of_instance::get_query_non_incr::__rust_end_short_backtrace
30: 0x7a5ddf47b792 - rustc_monomorphize[1ec9e6f51add3954]::collector::collect_items_rec::{closure#0}
31: 0x7a5ddfba14c7 - rustc_monomorphize[1ec9e6f51add3954]::collector::collect_items_rec
32: 0x7a5ddfba1e22 - rustc_monomorphize[1ec9e6f51add3954]::collector::collect_items_rec
33: 0x7a5ddfba1e22 - rustc_monomorphize[1ec9e6f51add3954]::collector::collect_items_rec
34: 0x7a5ddfba1e22 - rustc_monomorphize[1ec9e6f51add3954]::collector::collect_items_rec
35: 0x7a5ddfba1e22 - rustc_monomorphize[1ec9e6f51add3954]::collector::collect_items_rec
36: 0x7a5ddef402de - rustc_monomorphize[1ec9e6f51add3954]::collector::collect_crate_mono_items
37: 0x7a5ddf97e762 - rustc_monomorphize[1ec9e6f51add3954]::partitioning::collect_and_partition_mono_items
38: 0x7a5ddf97e6d6 - rustc_query_impl[d25549a6c4185600]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[d25549a6c4185600]::query_impl::collect_and_partition_mono_items::dynamic_query::{closure#2}::{closure#0}, rustc_middle[197a7b3770fbd787]::query::erase::Erased<[u8; 40usize]>>
39: 0x7a5ddf97e6b3 - <rustc_query_impl[d25549a6c4185600]::query_impl::collect_and_partition_mono_items::dynamic_query::{closure#2} as core[b00e6010bfa5719a]::ops::function::FnOnce<(rustc_middle[197a7b3770fbd787]::ty::context::TyCtxt, ())>>::call_once
40: 0x7a5ddf97dde2 - rustc_query_system[22c8932483092702]::query::plumbing::try_execute_query::<rustc_query_impl[d25549a6c4185600]::DynamicConfig<rustc_query_system[22c8932483092702]::query::caches::SingleCache<rustc_middle[197a7b3770fbd787]::query::erase::Erased<[u8; 40usize]>>, false, false, false>, rustc_query_impl[d25549a6c4185600]::plumbing::QueryCtxt, false>
41: 0x7a5ddf97db85 - rustc_query_impl[d25549a6c4185600]::query_impl::collect_and_partition_mono_items::get_query_non_incr::__rust_end_short_backtrace
42: 0x7a5ddf985920 - <rustc_codegen_llvm[6f7f5741bbc2f41f]::LlvmCodegenBackend as rustc_codegen_ssa[72a5fc54c4d6959c]::traits::backend::CodegenBackend>::codegen_crate
43: 0x7a5ddfa623eb - <rustc_interface[daed2421835a31ce]::queries::Linker>::codegen_and_build_linker
44: 0x7a5ddfa57cf0 - rustc_interface[daed2421835a31ce]::passes::create_and_enter_global_ctxt::<core[b00e6010bfa5719a]::option::Option<rustc_interface[daed2421835a31ce]::queries::Linker>, rustc_driver_impl[8214a48106e737a0]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}
45: 0x7a5ddf9d31eb - rustc_interface[daed2421835a31ce]::interface::run_compiler::<(), rustc_driver_impl[8214a48106e737a0]::run_compiler::{closure#0}>::{closure#1}
46: 0x7a5ddf9245c8 - std[e3e91186ef571fb2]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[daed2421835a31ce]::util::run_in_thread_with_globals<rustc_interface[daed2421835a31ce]::util::run_in_thread_pool_with_globals<rustc_interface[daed2421835a31ce]::interface::run_compiler<(), rustc_driver_impl[8214a48106e737a0]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
47: 0x7a5ddf9249f4 - <<std[e3e91186ef571fb2]::thread::Builder>::spawn_unchecked_<rustc_interface[daed2421835a31ce]::util::run_in_thread_with_globals<rustc_interface[daed2421835a31ce]::util::run_in_thread_pool_with_globals<rustc_interface[daed2421835a31ce]::interface::run_compiler<(), rustc_driver_impl[8214a48106e737a0]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[b00e6010bfa5719a]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
48: 0x7a5ddf9253af - std::sys::pal::unix::thread::Thread::new::thread_start::he442680e6614a233
49: 0x7a5dd9ca370a - <unknown>
50: 0x7a5dd9d27aac - <unknown>
51: 0x0 - <unknown>
error: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
note: please make sure that you have updated to the latest nightly
note: rustc 1.87.0-nightly (3b022d8ce 2025-02-18) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z validate-mir -Z dump-mir-dir=dir
query stack during panic:
#0 [mir_shims] generating MIR shim for `core::ptr::drop_in_place`
#1 [check_mono_item] monomorphization-time checking
#2 [items_of_instance] collecting items used by `core::ptr::drop_in_place::<{async fn body of vec_unreachable()}> - shim(Some({async fn body of vec_unreachable()}))`
#3 [collect_and_partition_mono_items] collect_and_partition_mono_items
end of query stack
warning: 9 warnings emitted