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ice: unexpected coroutine type Pin<&mut.. #117670

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matthiaskrgr opened this issue Nov 7, 2023 · 1 comment · Fixed by #117686
Closed

ice: unexpected coroutine type Pin<&mut.. #117670

matthiaskrgr opened this issue Nov 7, 2023 · 1 comment · Fixed by #117686
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@compiler-errors
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C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@matthiaskrgr
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snippet:

async fn asyncfn() {
    let binding = match true {};
}

Version information

rustc 1.75.0-nightly (61a3eea80 2023-11-07)
binary: rustc
commit-hash: 61a3eea8043cc1c7a09c2adda884e27ffa8a1172
commit-date: 2023-11-07
host: x86_64-unknown-linux-gnu
release: 1.75.0-nightly
LLVM version: 17.0.4

Command:
/home/matthias/.rustup/toolchains/master/bin/rustc

Program output 

error[E0670]: `async fn` is not permitted in Rust 2015
 --> /tmp/icemaker_global_tempdir.7o3Q1gw7UiZR/rustc_testrunner_tmpdir_reporting.9ubqj5lFq7ji/mvce.rs:1:1
  |
1 | async fn asyncfn() {
  | ^^^^^ to use `async fn`, switch to Rust 2018 or later
  |
  = help: pass `--edition 2021` to `rustc`
  = note: for more on editions, read https://doc.rust-lang.org/edition-guide

error[E0601]: `main` function not found in crate `mvce`
 --> /tmp/icemaker_global_tempdir.7o3Q1gw7UiZR/rustc_testrunner_tmpdir_reporting.9ubqj5lFq7ji/mvce.rs:3:2
  |
3 | }
  |  ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.7o3Q1gw7UiZR/rustc_testrunner_tmpdir_reporting.9ubqj5lFq7ji/mvce.rs`

error[E0004]: non-exhaustive patterns: type `bool` is non-empty
 --> /tmp/icemaker_global_tempdir.7o3Q1gw7UiZR/rustc_testrunner_tmpdir_reporting.9ubqj5lFq7ji/mvce.rs:2:25
  |
2 |     let binding = match true {};
  |                         ^^^^
  |
  = note: the matched value is of type `bool`
help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
  |
2 ~     let binding = match true {
3 +         _ => todo!(),
4 ~     };
  |

error: internal compiler error: compiler/rustc_mir_transform/src/coroutine.rs:1456:14: unexpected coroutine type Pin<&mut {async fn body@/tmp/icemaker_global_tempdir.7o3Q1gw7UiZR/rustc_testrunner_tmpdir_reporting.9ubqj5lFq7ji/mvce.rs:1:20: 3:2}>
 --> /tmp/icemaker_global_tempdir.7o3Q1gw7UiZR/rustc_testrunner_tmpdir_reporting.9ubqj5lFq7ji/mvce.rs:1:20
  |
1 |   async fn asyncfn() {
  |  ____________________^
2 | |     let binding = match true {};
3 | | }
  | |_^

thread 'rustc' panicked at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/compiler/rustc_errors/src/lib.rs:1000:33:
Box<dyn Any>
stack backtrace:
   0:     0x7f9895169cfc - std::backtrace_rs::backtrace::libunwind::trace::ha8f6e52a8cecff6b
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
   1:     0x7f9895169cfc - std::backtrace_rs::backtrace::trace_unsynchronized::hc3d43a7a80e1a3c8
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f9895169cfc - std::sys_common::backtrace::_print_fmt::hc7440be187a95d41
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/std/src/sys_common/backtrace.rs:67:5
   3:     0x7f9895169cfc - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h96cf8ee4b5f2e036
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f98951cbf20 - core::fmt::rt::Argument::fmt::hdfd5a66e0fbbda61
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/core/src/fmt/rt.rs:142:9
   5:     0x7f98951cbf20 - core::fmt::write::hbf8504e4604fab75
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/core/src/fmt/mod.rs:1117:17
   6:     0x7f989515dc1f - std::io::Write::write_fmt::h8c1794a4e8f00a67
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/std/src/io/mod.rs:1763:15
   7:     0x7f9895169ae4 - std::sys_common::backtrace::_print::h8fc37d1a8fd62fb9
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f9895169ae4 - std::sys_common::backtrace::print::h6ea2abbcb6744317
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f989516c777 - std::panicking::default_hook::{{closure}}::h264888a1ebdc1f1f
  10:     0x7f989516c4df - std::panicking::default_hook::h7cd70883366c02e2
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/std/src/panicking.rs:292:9
  11:     0x7f9897eabd60 - std[a7c0a148e67fdc04]::panicking::update_hook::<alloc[4f836f92b421e5d]::boxed::Box<rustc_driver_impl[8f58a3fefd4a7177]::install_ice_hook::{closure#0}>>::{closure#0}
  12:     0x7f989516ceb8 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hae96e9a73f1815a9
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/alloc/src/boxed.rs:2021:9
  13:     0x7f989516ceb8 - std::panicking::rust_panic_with_hook::h3b7bf215b6d504aa
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/std/src/panicking.rs:783:13
  14:     0x7f98984798d4 - std[a7c0a148e67fdc04]::panicking::begin_panic::<rustc_errors[ff5223dc5e19fc25]::ExplicitBug>::{closure#0}
  15:     0x7f989846f576 - std[a7c0a148e67fdc04]::sys_common::backtrace::__rust_end_short_backtrace::<std[a7c0a148e67fdc04]::panicking::begin_panic<rustc_errors[ff5223dc5e19fc25]::ExplicitBug>::{closure#0}, !>
  16:     0x7f989845e6e6 - std[a7c0a148e67fdc04]::panicking::begin_panic::<rustc_errors[ff5223dc5e19fc25]::ExplicitBug>
  17:     0x7f989845086e - <rustc_errors[ff5223dc5e19fc25]::HandlerInner>::span_bug::<rustc_span[4568d02bda951cb5]::span_encoding::Span, alloc[4f836f92b421e5d]::string::String>
  18:     0x7f9898445478 - <rustc_errors[ff5223dc5e19fc25]::Handler>::span_bug::<rustc_span[4568d02bda951cb5]::span_encoding::Span, alloc[4f836f92b421e5d]::string::String>
  19:     0x7f9898479a1b - rustc_middle[5cc2d7af9b9bf8d9]::util::bug::opt_span_bug_fmt::<rustc_span[4568d02bda951cb5]::span_encoding::Span>::{closure#0}
  20:     0x7f9898479a4a - rustc_middle[5cc2d7af9b9bf8d9]::ty::context::tls::with_opt::<rustc_middle[5cc2d7af9b9bf8d9]::util::bug::opt_span_bug_fmt<rustc_span[4568d02bda951cb5]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  21:     0x7f989846f5b8 - rustc_middle[5cc2d7af9b9bf8d9]::ty::context::tls::with_context_opt::<rustc_middle[5cc2d7af9b9bf8d9]::ty::context::tls::with_opt<rustc_middle[5cc2d7af9b9bf8d9]::util::bug::opt_span_bug_fmt<rustc_span[4568d02bda951cb5]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  22:     0x7f9896f0e7e4 - rustc_middle[5cc2d7af9b9bf8d9]::util::bug::span_bug_fmt::<rustc_span[4568d02bda951cb5]::span_encoding::Span>
  23:     0x7f9898508de2 - rustc_mir_transform[2f4f7bcc12e314b4]::coroutine::mir_coroutine_witnesses
  24:     0x7f9898689e4c - rustc_query_impl[640096e6498a15f6]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[640096e6498a15f6]::query_impl::mir_coroutine_witnesses::dynamic_query::{closure#2}::{closure#0}, rustc_middle[5cc2d7af9b9bf8d9]::query::erase::Erased<[u8; 8usize]>>
  25:     0x7f98990830d8 - rustc_query_system[d79ebc7ab414f88c]::query::plumbing::try_execute_query::<rustc_query_impl[640096e6498a15f6]::DynamicConfig<rustc_query_system[d79ebc7ab414f88c]::query::caches::DefaultCache<rustc_span[4568d02bda951cb5]::def_id::DefId, rustc_middle[5cc2d7af9b9bf8d9]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[640096e6498a15f6]::plumbing::QueryCtxt, false>
  26:     0x7f989868ffd8 - rustc_query_impl[640096e6498a15f6]::query_impl::mir_coroutine_witnesses::get_query_non_incr::__rust_end_short_backtrace
  27:     0x7f989919c905 - rustc_middle[5cc2d7af9b9bf8d9]::query::plumbing::query_get_at::<rustc_query_system[d79ebc7ab414f88c]::query::caches::DefaultCache<rustc_span[4568d02bda951cb5]::def_id::DefId, rustc_middle[5cc2d7af9b9bf8d9]::query::erase::Erased<[u8; 8usize]>>>
  28:     0x7f989a59fa3d - <rustc_middle[5cc2d7af9b9bf8d9]::ty::util::OpaqueTypeExpander as rustc_type_ir[80d8ecad5527dc5b]::fold::TypeFolder<rustc_middle[5cc2d7af9b9bf8d9]::ty::context::TyCtxt>>::fold_ty.cold.0
  29:     0x7f9899aa5dde - <&rustc_middle[5cc2d7af9b9bf8d9]::ty::list::List<rustc_middle[5cc2d7af9b9bf8d9]::ty::generic_args::GenericArg> as rustc_type_ir[80d8ecad5527dc5b]::fold::TypeFoldable<rustc_middle[5cc2d7af9b9bf8d9]::ty::context::TyCtxt>>::try_fold_with::<rustc_middle[5cc2d7af9b9bf8d9]::ty::util::OpaqueTypeExpander>
  30:     0x7f989a59fc33 - <rustc_middle[5cc2d7af9b9bf8d9]::ty::util::OpaqueTypeExpander as rustc_type_ir[80d8ecad5527dc5b]::fold::TypeFolder<rustc_middle[5cc2d7af9b9bf8d9]::ty::context::TyCtxt>>::fold_ty.cold.0
  31:     0x7f9899aa659f - <rustc_middle[5cc2d7af9b9bf8d9]::ty::util::OpaqueTypeExpander>::expand_opaque_ty
  32:     0x7f9899aa62d8 - <rustc_middle[5cc2d7af9b9bf8d9]::ty::context::TyCtxt>::try_expand_impl_trait_type
  33:     0x7f98995884d6 - rustc_hir_analysis[ce52d48230ee7ff2]::check::check::check_mod_item_types
  34:     0x7f9899586eb9 - rustc_query_impl[640096e6498a15f6]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[640096e6498a15f6]::query_impl::check_mod_item_types::dynamic_query::{closure#2}::{closure#0}, rustc_middle[5cc2d7af9b9bf8d9]::query::erase::Erased<[u8; 0usize]>>
  35:     0x7f98999e3a3b - rustc_query_system[d79ebc7ab414f88c]::query::plumbing::try_execute_query::<rustc_query_impl[640096e6498a15f6]::DynamicConfig<rustc_query_system[d79ebc7ab414f88c]::query::caches::DefaultCache<rustc_span[4568d02bda951cb5]::def_id::LocalModDefId, rustc_middle[5cc2d7af9b9bf8d9]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[640096e6498a15f6]::plumbing::QueryCtxt, false>
  36:     0x7f98999e3417 - rustc_query_impl[640096e6498a15f6]::query_impl::check_mod_item_types::get_query_non_incr::__rust_end_short_backtrace
  37:     0x7f989961b059 - rustc_hir_analysis[ce52d48230ee7ff2]::check_crate
  38:     0x7f98992a31d5 - rustc_interface[9052e2cdd752e6f7]::passes::analysis
  39:     0x7f98992a2e1d - rustc_query_impl[640096e6498a15f6]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[640096e6498a15f6]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[5cc2d7af9b9bf8d9]::query::erase::Erased<[u8; 1usize]>>
  40:     0x7f9899ca7800 - rustc_query_system[d79ebc7ab414f88c]::query::plumbing::try_execute_query::<rustc_query_impl[640096e6498a15f6]::DynamicConfig<rustc_query_system[d79ebc7ab414f88c]::query::caches::SingleCache<rustc_middle[5cc2d7af9b9bf8d9]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[640096e6498a15f6]::plumbing::QueryCtxt, false>
  41:     0x7f9899ca7607 - rustc_query_impl[640096e6498a15f6]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  42:     0x7f9899fc0f33 - rustc_interface[9052e2cdd752e6f7]::interface::run_compiler::<core[9831b5d2acfe63fe]::result::Result<(), rustc_span[4568d02bda951cb5]::ErrorGuaranteed>, rustc_driver_impl[8f58a3fefd4a7177]::run_compiler::{closure#1}>::{closure#0}
  43:     0x7f9899fee8ca - std[a7c0a148e67fdc04]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[9052e2cdd752e6f7]::util::run_in_thread_with_globals<rustc_interface[9052e2cdd752e6f7]::util::run_in_thread_pool_with_globals<rustc_interface[9052e2cdd752e6f7]::interface::run_compiler<core[9831b5d2acfe63fe]::result::Result<(), rustc_span[4568d02bda951cb5]::ErrorGuaranteed>, rustc_driver_impl[8f58a3fefd4a7177]::run_compiler::{closure#1}>::{closure#0}, core[9831b5d2acfe63fe]::result::Result<(), rustc_span[4568d02bda951cb5]::ErrorGuaranteed>>::{closure#0}, core[9831b5d2acfe63fe]::result::Result<(), rustc_span[4568d02bda951cb5]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[9831b5d2acfe63fe]::result::Result<(), rustc_span[4568d02bda951cb5]::ErrorGuaranteed>>
  44:     0x7f9899fee6f3 - <<std[a7c0a148e67fdc04]::thread::Builder>::spawn_unchecked_<rustc_interface[9052e2cdd752e6f7]::util::run_in_thread_with_globals<rustc_interface[9052e2cdd752e6f7]::util::run_in_thread_pool_with_globals<rustc_interface[9052e2cdd752e6f7]::interface::run_compiler<core[9831b5d2acfe63fe]::result::Result<(), rustc_span[4568d02bda951cb5]::ErrorGuaranteed>, rustc_driver_impl[8f58a3fefd4a7177]::run_compiler::{closure#1}>::{closure#0}, core[9831b5d2acfe63fe]::result::Result<(), rustc_span[4568d02bda951cb5]::ErrorGuaranteed>>::{closure#0}, core[9831b5d2acfe63fe]::result::Result<(), rustc_span[4568d02bda951cb5]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[9831b5d2acfe63fe]::result::Result<(), rustc_span[4568d02bda951cb5]::ErrorGuaranteed>>::{closure#1} as core[9831b5d2acfe63fe]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  45:     0x7f9895177c25 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hbd3ecd0399f32c83
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/alloc/src/boxed.rs:2007:9
  46:     0x7f9895177c25 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::heae77eec81d79ab4
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/alloc/src/boxed.rs:2007:9
  47:     0x7f9895177c25 - std::sys::unix::thread::Thread::new::thread_start::h6bd8f7ef76843338
                               at /rustc/61a3eea8043cc1c7a09c2adda884e27ffa8a1172/library/std/src/sys/unix/thread.rs:108:17
  48:     0x7f9894f0c9eb - <unknown>
  49:     0x7f9894f907cc - <unknown>
  50:                0x0 - <unknown>

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: rustc 1.75.0-nightly (61a3eea80 2023-11-07) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [mir_coroutine_witnesses] coroutine witness types for `asyncfn::{closure#0}`
#1 [check_mod_item_types] checking item types in top-level module
#2 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 4 previous errors

Some errors have detailed explanations: E0004, E0601, E0670.
For more information about an error, try `rustc --explain E0004`.

@matthiaskrgr matthiaskrgr added I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. C-bug Category: This is a bug. labels Nov 7, 2023
@rustbot rustbot added the needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. label Nov 7, 2023
@matthiaskrgr
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regression in #117418 ping @compiler-errors

@compiler-errors compiler-errors self-assigned this Nov 7, 2023
@compiler-errors compiler-errors mentioned this issue Nov 7, 2023
Merged
@saethlin saethlin removed the needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. label Nov 7, 2023
@lqd lqd mentioned this issue Nov 14, 2023
Closed
@bors bors closed this as completed in d2cdf6c Nov 15, 2023
rust-timer added a commit to rust-lang-ci/rust that referenced this issue Nov 15, 2023
@rust-timer
Unrolled build for rust-lang#117686
a3aacb9 
Rollup merge of rust-lang#117686 - compiler-errors:gen-body, r=wesleywiser

Build pre-coroutine-transform coroutine body on error

I was accidentally building the post-transform coroutine body, rather than the pre-transform coroutine body. There's no pinning expected here yet, and the return type isn't yet transformed into `CoroutineState`.

Fixes rust-lang#117670
@matthiaskrgr matthiaskrgr mentioned this issue Nov 16, 2023
Closed
@lukas-code lukas-code mentioned this issue Dec 1, 2023
Open
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C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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Build pre-coroutine-transform coroutine body on error compiler-errors/rust
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