[ICE]: assertion left == right failed, left: std::future::ResumeTy, right: ()

[mohe2015]

Code

#![feature(async_iterator, gen_blocks, noop_waker)]

use std::{async_iter::AsyncIterator, pin::pin, task::{Context, Waker}};

pub fn main() {
    let async_iterator = pin!(async gen { yield "test" });
    let waker = Waker::noop();
    let ctx = &mut Context::from_waker(&waker);
    async_iterator.poll_next(ctx);
}

Affected release channels

• Previous Stable
• Current Stable
• Current Beta
• Current Nightly

Rust Version

rustc 1.76.0-nightly (445177724 2023-12-16)
binary: rustc
commit-hash: 445177724ac2beebf4faa5a3ffacb2adbe7e7846
commit-date: 2023-12-16
host: x86_64-unknown-linux-gnu
release: 1.76.0-nightly
LLVM version: 17.0.6

Current error output

No response

Backtrace

thread 'rustc' panicked at compiler/rustc_ty_utils/src/abi.rs:174:21:
assertion `left == right` failed
  left: std::future::ResumeTy
 right: ()
stack backtrace:
   0:     0x7f4aa2fe3edc - std::backtrace_rs::backtrace::libunwind::trace::h7d462dae69be89e5
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
   1:     0x7f4aa2fe3edc - std::backtrace_rs::backtrace::trace_unsynchronized::he731381aaced1e38
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f4aa2fe3edc - std::sys_common::backtrace::_print_fmt::h195f5c9c00833d35
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/std/src/sys_common/backtrace.rs:68:5
   3:     0x7f4aa2fe3edc - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h0053b42c4d1d63ae
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f4aa3037040 - core::fmt::rt::Argument::fmt::h913450990a52c365
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/core/src/fmt/rt.rs:142:9
   5:     0x7f4aa3037040 - core::fmt::write::h5707c0aaab19fd3a
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/core/src/fmt/mod.rs:1120:17
   6:     0x7f4aa2fd7def - std::io::Write::write_fmt::h4c73163f9cd5f03d
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/std/src/io/mod.rs:1810:15
   7:     0x7f4aa2fe3cc4 - std::sys_common::backtrace::_print::hfd7244b2fa9899c1
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f4aa2fe3cc4 - std::sys_common::backtrace::print::h5c65acc19a2c008b
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f4aa2fe6987 - std::panicking::default_hook::{{closure}}::hc7746e0dc7ed4e5e
  10:     0x7f4aa2fe66ef - std::panicking::default_hook::h7367bd9107ac6679
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/std/src/panicking.rs:292:9
  11:     0x7f4a9fd51520 - std[2241a118a71dd327]::panicking::update_hook::<alloc[a7c900cc42d1d3a7]::boxed::Box<rustc_driver_impl[584fee9d43f853a3]::install_ice_hook::{closure#0}>>::{closure#0}
  12:     0x7f4aa2fe70a6 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::he149af0da5aef09b
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/alloc/src/boxed.rs:2029:9
  13:     0x7f4aa2fe70a6 - std::panicking::rust_panic_with_hook::hbfa1c9355e904669
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/std/src/panicking.rs:783:13
  14:     0x7f4aa2fe6dfc - std::panicking::begin_panic_handler::{{closure}}::hdf202f447b582071
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/std/src/panicking.rs:657:13
  15:     0x7f4aa2fe4396 - std::sys_common::backtrace::__rust_end_short_backtrace::hbf111714b660571e
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/std/src/sys_common/backtrace.rs:171:18
  16:     0x7f4aa2fe6b80 - rust_begin_unwind
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/std/src/panicking.rs:645:5
  17:     0x7f4aa3033745 - core::panicking::panic_fmt::h0d44e5490191d4d0
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/core/src/panicking.rs:72:14
  18:     0x7f4aa3033cdb - core::panicking::assert_failed_inner::hd26222ef5191b774
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/core/src/panicking.rs:342:17
  19:     0x7f4aa08ea1a3 - core[aaf102c868443a92]::panicking::assert_failed::<rustc_middle[524168e189d8c838]::ty::Ty, rustc_middle[524168e189d8c838]::ty::Ty>
  20:     0x7f4aa1547e69 - rustc_ty_utils[68ab7dd3530106d]::abi::fn_abi_of_instance
  21:     0x7f4aa1544501 - rustc_query_impl[6fcda27fce69b359]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[6fcda27fce69b359]::query_impl::fn_abi_of_instance::dynamic_query::{closure#2}::{closure#0}, rustc_middle[524168e189d8c838]::query::erase::Erased<[u8; 16usize]>>
  22:     0x7f4aa15ddc41 - rustc_query_system[5a9da6ab9f4cd760]::query::plumbing::try_execute_query::<rustc_query_impl[6fcda27fce69b359]::DynamicConfig<rustc_query_system[5a9da6ab9f4cd760]::query::caches::DefaultCache<rustc_middle[524168e189d8c838]::ty::ParamEnvAnd<(rustc_middle[524168e189d8c838]::ty::instance::Instance, &rustc_middle[524168e189d8c838]::ty::list::List<rustc_middle[524168e189d8c838]::ty::Ty>)>, rustc_middle[524168e189d8c838]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[6fcda27fce69b359]::plumbing::QueryCtxt, true>
  23:     0x7f4aa15dd3ea - rustc_query_impl[6fcda27fce69b359]::query_impl::fn_abi_of_instance::get_query_incr::__rust_end_short_backtrace
  24:     0x7f4a9e56495e - <rustc_codegen_llvm[e5453e851ea71d3a]::context::CodegenCx as rustc_codegen_ssa[948bf90bbbf7093]::traits::declare::PreDefineMethods>::predefine_fn
  25:     0x7f4aa19491e3 - rustc_codegen_llvm[e5453e851ea71d3a]::base::compile_codegen_unit::module_codegen
  26:     0x7f4aa1f72605 - <rustc_codegen_llvm[e5453e851ea71d3a]::LlvmCodegenBackend as rustc_codegen_ssa[948bf90bbbf7093]::traits::backend::ExtraBackendMethods>::compile_codegen_unit
  27:     0x7f4aa1f82380 - rustc_codegen_ssa[948bf90bbbf7093]::base::codegen_crate::<rustc_codegen_llvm[e5453e851ea71d3a]::LlvmCodegenBackend>
  28:     0x7f4aa1f81bfa - <rustc_codegen_llvm[e5453e851ea71d3a]::LlvmCodegenBackend as rustc_codegen_ssa[948bf90bbbf7093]::traits::backend::CodegenBackend>::codegen_crate
  29:     0x7f4aa1f7fd85 - rustc_interface[4dfaa8a239df06eb]::passes::start_codegen
  30:     0x7f4aa1f7f4fa - <rustc_interface[4dfaa8a239df06eb]::queries::Queries>::codegen_and_build_linker
  31:     0x7f4aa2042747 - rustc_interface[4dfaa8a239df06eb]::interface::run_compiler::<core[aaf102c868443a92]::result::Result<(), rustc_span[c215433fd65c8d88]::ErrorGuaranteed>, rustc_driver_impl[584fee9d43f853a3]::run_compiler::{closure#0}>::{closure#0}
  32:     0x7f4aa1fb7660 - std[2241a118a71dd327]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[4dfaa8a239df06eb]::util::run_in_thread_with_globals<rustc_interface[4dfaa8a239df06eb]::util::run_in_thread_pool_with_globals<rustc_interface[4dfaa8a239df06eb]::interface::run_compiler<core[aaf102c868443a92]::result::Result<(), rustc_span[c215433fd65c8d88]::ErrorGuaranteed>, rustc_driver_impl[584fee9d43f853a3]::run_compiler::{closure#0}>::{closure#0}, core[aaf102c868443a92]::result::Result<(), rustc_span[c215433fd65c8d88]::ErrorGuaranteed>>::{closure#0}, core[aaf102c868443a92]::result::Result<(), rustc_span[c215433fd65c8d88]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[aaf102c868443a92]::result::Result<(), rustc_span[c215433fd65c8d88]::ErrorGuaranteed>>
  33:     0x7f4aa1fb748f - <<std[2241a118a71dd327]::thread::Builder>::spawn_unchecked_<rustc_interface[4dfaa8a239df06eb]::util::run_in_thread_with_globals<rustc_interface[4dfaa8a239df06eb]::util::run_in_thread_pool_with_globals<rustc_interface[4dfaa8a239df06eb]::interface::run_compiler<core[aaf102c868443a92]::result::Result<(), rustc_span[c215433fd65c8d88]::ErrorGuaranteed>, rustc_driver_impl[584fee9d43f853a3]::run_compiler::{closure#0}>::{closure#0}, core[aaf102c868443a92]::result::Result<(), rustc_span[c215433fd65c8d88]::ErrorGuaranteed>>::{closure#0}, core[aaf102c868443a92]::result::Result<(), rustc_span[c215433fd65c8d88]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[aaf102c868443a92]::result::Result<(), rustc_span[c215433fd65c8d88]::ErrorGuaranteed>>::{closure#1} as core[aaf102c868443a92]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  34:     0x7f4aa2ff0ef5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::he015de65ac3a346b
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/alloc/src/boxed.rs:2015:9
  35:     0x7f4aa2ff0ef5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h594367a4025f4a68
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/alloc/src/boxed.rs:2015:9
  36:     0x7f4aa2ff0ef5 - std::sys::unix::thread::Thread::new::thread_start::hb319976c95d5f01a
                               at /rustc/445177724ac2beebf4faa5a3ffacb2adbe7e7846/library/std/src/sys/unix/thread.rs:108:17
  37:     0x7f4a9ceaa9eb - start_thread
                               at /usr/src/debug/glibc/glibc/nptl/pthread_create.c:444:8
  38:     0x7f4a9cf2e7cc - __GI___clone3
                               at /usr/src/debug/glibc/glibc/misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
  39:                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 attach the file at `/home/moritz/Documents/async-templating/rustc-ice-2023-12-17T23_21_01-75542.txt` to your bug report

note: compiler flags: -Z unstable-options --crate-type lib -C embed-bitcode=no -C debuginfo=2 -C incremental=[REDACTED]

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [fn_abi_of_instance] computing call ABI of `main::{closure#0}`
end of query stack

Anything else?

No response