Comments (4)
facundo-villa
commented on August 16, 2024
It can also be triggered like this.
#![feature(async_closure)]
use futures::future::join_all;
async fn fun<'a>(param: &'a u32) {
let _ = join_all((0..3).map(async |_| {
format!("{}", param)
})).await;
}
fn main() {
futures::executor::block_on(fun(&1));
}from rust.
theemathas
commented on August 16, 2024
Minimized:
#![feature(async_closure)]
// Only Fn and FnMut cause an ICE. FnOnce doesn't.
fn call<T>(mut f: impl FnMut() -> T) {
f(); // Discard the returned future. No await needed for ICE.
}
fn main() {
let x = 1_i32;
call(async || x);
}Error output
Compiling playground v0.0.1 (/playground)
thread 'rustc' panicked at compiler/rustc_mir_transform/src/shim.rs:1036:9:
assertion `left == right` failed
left: (&'{erased} i32,)
right: ()
stack backtrace:
0: 0x7f8dd091b515 - std::backtrace_rs::backtrace::libunwind::trace::h3e6ef95ba444c071
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
1: 0x7f8dd091b515 - std::backtrace_rs::backtrace::trace_unsynchronized::hf308e5cf23ddb1f2
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f8dd091b515 - std::sys::backtrace::_print_fmt::h875f055a8443612e
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/std/src/sys/backtrace.rs:68:5
3: 0x7f8dd091b515 - <std::sys::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf048241184006193
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/std/src/sys/backtrace.rs:44:22
4: 0x7f8dd096ae7b - core::fmt::rt::Argument::fmt::hbfa8b610cdf08154
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/core/src/fmt/rt.rs:165:63
5: 0x7f8dd096ae7b - core::fmt::write::h38ac925a86684a19
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/core/src/fmt/mod.rs:1168:21
6: 0x7f8dd09100bf - std::io::Write::write_fmt::h8e14b1bbba4ad770
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/std/src/io/mod.rs:1835:15
7: 0x7f8dd091b2ee - std::sys::backtrace::_print::heb4ac079ec90a68e
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/std/src/sys/backtrace.rs:47:5
8: 0x7f8dd091b2ee - std::sys::backtrace::print::ha33f33bac52a4063
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/std/src/sys/backtrace.rs:34:9
9: 0x7f8dd091dc39 - std::panicking::default_hook::{{closure}}::h2144f34920a14974
10: 0x7f8dd091d9dc - std::panicking::default_hook::h18933871d80cdc21
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/std/src/panicking.rs:292:9
11: 0x7f8dd3d6f4a0 - std[20db51b4dc66b481]::panicking::update_hook::<alloc[7a9d83151868560e]::boxed::Box<rustc_driver_impl[42aec5b3602e6800]::install_ice_hook::{closure#0}>>::{closure#0}
12: 0x7f8dd091e50f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h1cfdd0f28ef5545b
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/alloc/src/boxed.rs:2078:9
13: 0x7f8dd091e50f - std::panicking::rust_panic_with_hook::h4ad51c0c6b25b444
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/std/src/panicking.rs:804:13
14: 0x7f8dd091e137 - std::panicking::begin_panic_handler::{{closure}}::h3425c28d75ee8072
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/std/src/panicking.rs:670:13
15: 0x7f8dd091b9d9 - std::sys::backtrace::__rust_end_short_backtrace::h1e8092621577272d
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/std/src/sys/backtrace.rs:171:18
16: 0x7f8dd091de14 - rust_begin_unwind
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/std/src/panicking.rs:661:5
17: 0x7f8dd0967433 - core::panicking::panic_fmt::hee696384dfa25c0c
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/core/src/panicking.rs:74:14
18: 0x7f8dd096793e - core::panicking::assert_failed_inner::hbe69f7ee81ff4d1a
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/core/src/panicking.rs:410:17
19: 0x7f8dd44b0a03 - core[fd5e850c33eb6236]::panicking::assert_failed::<rustc_middle[b588a4788bcf8236]::ty::Ty, rustc_middle[b588a4788bcf8236]::ty::Ty>
20: 0x7f8dd5ea2aab - rustc_mir_transform[fdf71a3a69b9138a]::shim::make_shim
21: 0x7f8dd5e9f8ef - rustc_query_impl[33da1f1d673ac58e]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[33da1f1d673ac58e]::query_impl::mir_shims::dynamic_query::{closure#2}::{closure#0}, rustc_middle[b588a4788bcf8236]::query::erase::Erased<[u8; 8usize]>>
22: 0x7f8dd5e9f8b9 - <rustc_query_impl[33da1f1d673ac58e]::query_impl::mir_shims::dynamic_query::{closure#2} as core[fd5e850c33eb6236]::ops::function::FnOnce<(rustc_middle[b588a4788bcf8236]::ty::context::TyCtxt, rustc_middle[b588a4788bcf8236]::ty::instance::InstanceKind)>>::call_once
23: 0x7f8dd56d4e4f - rustc_query_system[32abc7d9028ee329]::query::plumbing::try_execute_query::<rustc_query_impl[33da1f1d673ac58e]::DynamicConfig<rustc_query_system[32abc7d9028ee329]::query::caches::DefaultCache<rustc_middle[b588a4788bcf8236]::ty::instance::InstanceKind, rustc_middle[b588a4788bcf8236]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[33da1f1d673ac58e]::plumbing::QueryCtxt, false>
24: 0x7f8dd56d4bb9 - rustc_query_impl[33da1f1d673ac58e]::query_impl::mir_shims::get_query_non_incr::__rust_end_short_backtrace
25: 0x7f8dd5b9780d - <rustc_middle[b588a4788bcf8236]::ty::context::TyCtxt>::instance_mir
26: 0x7f8dd6210e9a - rustc_monomorphize[12e0af1616a24b7e]::collector::collect_items_rec::{closure#0}
27: 0x7f8dd546d9af - rustc_monomorphize[12e0af1616a24b7e]::collector::collect_items_rec
28: 0x7f8dd546e12c - rustc_monomorphize[12e0af1616a24b7e]::collector::collect_items_rec
29: 0x7f8dd546e12c - rustc_monomorphize[12e0af1616a24b7e]::collector::collect_items_rec
30: 0x7f8dd56530ad - rustc_monomorphize[12e0af1616a24b7e]::partitioning::collect_and_partition_mono_items
31: 0x7f8dd61fa664 - rustc_query_impl[33da1f1d673ac58e]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[33da1f1d673ac58e]::query_impl::collect_and_partition_mono_items::dynamic_query::{closure#2}::{closure#0}, rustc_middle[b588a4788bcf8236]::query::erase::Erased<[u8; 24usize]>>
32: 0x7f8dd61fa649 - <rustc_query_impl[33da1f1d673ac58e]::query_impl::collect_and_partition_mono_items::dynamic_query::{closure#2} as core[fd5e850c33eb6236]::ops::function::FnOnce<(rustc_middle[b588a4788bcf8236]::ty::context::TyCtxt, ())>>::call_once
33: 0x7f8dd61fa208 - rustc_query_system[32abc7d9028ee329]::query::plumbing::try_execute_query::<rustc_query_impl[33da1f1d673ac58e]::DynamicConfig<rustc_query_system[32abc7d9028ee329]::query::caches::SingleCache<rustc_middle[b588a4788bcf8236]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[33da1f1d673ac58e]::plumbing::QueryCtxt, false>
34: 0x7f8dd61f9f21 - rustc_query_impl[33da1f1d673ac58e]::query_impl::collect_and_partition_mono_items::get_query_non_incr::__rust_end_short_backtrace
35: 0x7f8dd631172f - <rustc_codegen_llvm[f77607e41541149f]::LlvmCodegenBackend as rustc_codegen_ssa[a768f5e0bba2f7a]::traits::backend::CodegenBackend>::codegen_crate
36: 0x7f8dd6297a45 - rustc_interface[d19dc351f3fbc095]::passes::start_codegen
37: 0x7f8dd62970da - <rustc_interface[d19dc351f3fbc095]::queries::Queries>::codegen_and_build_linker
38: 0x7f8dd61269c2 - rustc_interface[d19dc351f3fbc095]::interface::run_compiler::<core[fd5e850c33eb6236]::result::Result<(), rustc_span[f8da6251a5b957ab]::ErrorGuaranteed>, rustc_driver_impl[42aec5b3602e6800]::run_compiler::{closure#0}>::{closure#1}
39: 0x7f8dd6074d89 - std[20db51b4dc66b481]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[d19dc351f3fbc095]::util::run_in_thread_with_globals<rustc_interface[d19dc351f3fbc095]::util::run_in_thread_pool_with_globals<rustc_interface[d19dc351f3fbc095]::interface::run_compiler<core[fd5e850c33eb6236]::result::Result<(), rustc_span[f8da6251a5b957ab]::ErrorGuaranteed>, rustc_driver_impl[42aec5b3602e6800]::run_compiler::{closure#0}>::{closure#1}, core[fd5e850c33eb6236]::result::Result<(), rustc_span[f8da6251a5b957ab]::ErrorGuaranteed>>::{closure#0}, core[fd5e850c33eb6236]::result::Result<(), rustc_span[f8da6251a5b957ab]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[fd5e850c33eb6236]::result::Result<(), rustc_span[f8da6251a5b957ab]::ErrorGuaranteed>>
40: 0x7f8dd6074b3a - <<std[20db51b4dc66b481]::thread::Builder>::spawn_unchecked_<rustc_interface[d19dc351f3fbc095]::util::run_in_thread_with_globals<rustc_interface[d19dc351f3fbc095]::util::run_in_thread_pool_with_globals<rustc_interface[d19dc351f3fbc095]::interface::run_compiler<core[fd5e850c33eb6236]::result::Result<(), rustc_span[f8da6251a5b957ab]::ErrorGuaranteed>, rustc_driver_impl[42aec5b3602e6800]::run_compiler::{closure#0}>::{closure#1}, core[fd5e850c33eb6236]::result::Result<(), rustc_span[f8da6251a5b957ab]::ErrorGuaranteed>>::{closure#0}, core[fd5e850c33eb6236]::result::Result<(), rustc_span[f8da6251a5b957ab]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[fd5e850c33eb6236]::result::Result<(), rustc_span[f8da6251a5b957ab]::ErrorGuaranteed>>::{closure#2} as core[fd5e850c33eb6236]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
41: 0x7f8dd092839b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h94ad910a99affeba
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/alloc/src/boxed.rs:2064:9
42: 0x7f8dd092839b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::he514aef6ea70403a
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/alloc/src/boxed.rs:2064:9
43: 0x7f8dd092839b - std::sys::pal::unix::thread::Thread::new::thread_start::hf130b2754bc7a5a1
at /rustc/6b0f4b5ec3aa707ecaa78230722117324a4ce23c/library/std/src/sys/pal/unix/thread.rs:108:17
44: 0x7f8dd0832609 - start_thread
45: 0x7f8dd0755353 - clone
46: 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: please attach the file at `/playground/rustc-ice-2024-06-27T04_35_35-936.txt` to your bug report
note: compiler flags: --crate-type bin -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
#0 [mir_shims] generating MIR shim for `main::{closure#0}`
#1 [collect_and_partition_mono_items] collect_and_partition_mono_items
end of query stack
error: could not compile `playground` (bin "playground")
from rust.
theemathas
commented on August 16, 2024
Note: In the original code, changing async |v: &u32| { to |v: &u32| async move { causes the code to compile.
from rust.
GrigorenkoPV
commented on August 16, 2024
Minimized:
#![feature(async_closure)] // Only Fn and FnMut cause an ICE. FnOnce doesn't. fn call<T>(mut f: impl FnMut() -> T) { f(); // Discard the returned future. No await needed for ICE. } fn main() { let x = 1_i32; call(async || x); }
Regression in #125259
from rust.
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