Regression when compiling with 07-14 nightly #99276

bugadani · 2022-07-15T09:15:35Z

Code

pub struct Record<'a> {
    pub args: &'a [(usize, &'a str)],
}

mod a {
    extern "Rust" {
        fn foo(record: &super::Record);
    }
}

mod b {
    extern "Rust" {
        fn foo(record: &super::Record);
    }
}

Error output

thread 'rustc' panicked at 'assertion failed: !value.has_escaping_bound_vars()',

Backtrace

thread 'rustc' panicked at 'assertion failed: !value.has_escaping_bound_vars()', /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c\compiler\rustc_middle\src\ty\sty.rs:1000:9
stack backtrace:
   0:     0x7ff9c84a9d2f - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h22584ecc91186e64
   1:     0x7ff9c84e547a - core::fmt::write::h22be7db69745eece
   2:     0x7ff9c849cbaa - <std::io::IoSlice as core::fmt::Debug>::fmt::h61da6bb58c94015d
   3:     0x7ff9c84ad72b - std::panicking::default_hook::heafef5cea9c12d8b
   4:     0x7ff9c84ad357 - std::panicking::default_hook::heafef5cea9c12d8b
   5:     0x7ff9cb19b4a4 - <rustc_session[535a8d342c23eaa3]::options::WasiExecModel as rustc_session[535a8d342c23eaa3]::config::dep_tracking::DepTrackingHash>::hash
   6:     0x7ff9c84ae10c - std::panicking::rust_panic_with_hook::h79169c76d34f987b
   7:     0x7ff9c84ade52 - <std::panicking::begin_panic_handler::StrPanicPayload as core::panic::BoxMeUp>::get::hfcbc70f6a02eb89b
   8:     0x7ff9c84aaa27 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h22584ecc91186e64
   9:     0x7ff9c84adb60 - rust_begin_unwind
  10:     0x7ff9c851b445 - core::panicking::panic_fmt::hae5fa724e8b1cacf
  11:     0x7ff9c851b2ec - core::panicking::panic::hb3e6fe55042920db
  12:     0x7ff9cae66b97 - rustc_trait_selection[fd3e0aafddcc0eaa]::traits::type_known_to_meet_bound_modulo_regions
  13:     0x7ff9ca6ce20e - <rustc_ty_utils[a140dd048a38494d]::instance::BoundVarsCollector as rustc_middle[f080ea4a7cc158b5]::ty::visit::TypeVisitor>::visit_ty
  14:     0x7ff9ca6cd97e - <rustc_ty_utils[a140dd048a38494d]::instance::BoundVarsCollector as rustc_middle[f080ea4a7cc158b5]::ty::visit::TypeVisitor>::visit_ty
  15:     0x7ff9cabe2c7a - <rustc_span[b3b8b508e7cd26ef]::def_id::DefId as rustc_serialize[c3cf2e54bbdda217]::serialize::Encodable<rustc_query_impl[f8b2c5d5174158e4]::on_disk_cache::CacheEncoder>>::encode
  16:     0x7ff9cab3929c - <rustc_span[b3b8b508e7cd26ef]::def_id::DefId as rustc_serialize[c3cf2e54bbdda217]::serialize::Encodable<rustc_query_impl[f8b2c5d5174158e4]::on_disk_cache::CacheEncoder>>::encode
  17:     0x7ff9c9676690 - <&rustc_index[1917152cef6eef0]::vec::IndexVec<rustc_middle[f080ea4a7cc158b5]::mir::Promoted, rustc_middle[f080ea4a7cc158b5]::mir::Body> as rustc_serialize[c3cf2e54bbdda217]::serialize::Decodable<rustc_query_impl[f8b2c5d5174158e4]::on_disk_cache::CacheDecoder>>::decode
  18:     0x7ff9cafc72da - <rustc_middle[f080ea4a7cc158b5]::ty::Ty>::is_sized
  19:     0x7ff9cb02edd9 - <rustc_middle[f080ea4a7cc158b5]::ty::fold::BoundVarReplacer as rustc_middle[f080ea4a7cc158b5]::ty::fold::TypeFolder>::fold_region
  20:     0x7ff9cb03d21b - <rustc_middle[f080ea4a7cc158b5]::ty::fold::RegionFolder as rustc_middle[f080ea4a7cc158b5]::ty::fold::TypeFolder>::fold_region
  21:     0x7ff9cabe1ee4 - <rustc_span[b3b8b508e7cd26ef]::def_id::DefId as rustc_serialize[c3cf2e54bbdda217]::serialize::Encodable<rustc_query_impl[f8b2c5d5174158e4]::on_disk_cache::CacheEncoder>>::encode
  22:     0x7ff9cabd7c7c - <rustc_span[b3b8b508e7cd26ef]::def_id::DefId as rustc_serialize[c3cf2e54bbdda217]::serialize::Encodable<rustc_query_impl[f8b2c5d5174158e4]::on_disk_cache::CacheEncoder>>::encode
  23:     0x7ff9caaa5ad7 - <rustc_query_impl[f8b2c5d5174158e4]::Queries as rustc_middle[f080ea4a7cc158b5]::ty::query::QueryEngine>::as_any
  24:     0x7ff9cb023251 - <rustc_middle[f080ea4a7cc158b5]::ty::context::TyCtxt>::instance_mir
  25:     0x7ff9cb02eba9 - <rustc_middle[f080ea4a7cc158b5]::ty::fold::BoundVarReplacer as rustc_middle[f080ea4a7cc158b5]::ty::fold::TypeFolder>::fold_region
  26:     0x7ff9cb03d21b - <rustc_middle[f080ea4a7cc158b5]::ty::fold::RegionFolder as rustc_middle[f080ea4a7cc158b5]::ty::fold::TypeFolder>::fold_region
  27:     0x7ff9cabe1ee4 - <rustc_span[b3b8b508e7cd26ef]::def_id::DefId as rustc_serialize[c3cf2e54bbdda217]::serialize::Encodable<rustc_query_impl[f8b2c5d5174158e4]::on_disk_cache::CacheEncoder>>::encode
  28:     0x7ff9cabd7c7c - <rustc_span[b3b8b508e7cd26ef]::def_id::DefId as rustc_serialize[c3cf2e54bbdda217]::serialize::Encodable<rustc_query_impl[f8b2c5d5174158e4]::on_disk_cache::CacheEncoder>>::encode
  29:     0x7ff9caaa5ad7 - <rustc_query_impl[f8b2c5d5174158e4]::Queries as rustc_middle[f080ea4a7cc158b5]::ty::query::QueryEngine>::as_any
  30:     0x7ff9cd0bf159 - <rustc_lint[bd45a0703fe9f065]::context::CheckLintNameResult as core[1f2b1784ea6e9a42]::fmt::Debug>::fmt
  31:     0x7ff9cd0bfa2c - <<rustc_lint[bd45a0703fe9f065]::builtin::TypeAliasBounds>::suggest_changing_assoc_types::WalkAssocTypes as rustc_hir[c7854130ba8a45fb]::intravisit::Visitor>::visit_qpath
  32:     0x7ff9c98d9f3f - <rustc_lint[bd45a0703fe9f065]::builtin::IncompleteFeatures as rustc_lint[bd45a0703fe9f065]::passes::EarlyLintPass>::check_crate
  33:     0x7ff9c98da1dc - <rustc_lint[bd45a0703fe9f065]::builtin::IncompleteFeatures as rustc_lint[bd45a0703fe9f065]::passes::EarlyLintPass>::check_crate
  34:     0x7ff9c98da191 - <rustc_lint[bd45a0703fe9f065]::builtin::IncompleteFeatures as rustc_lint[bd45a0703fe9f065]::passes::EarlyLintPass>::check_crate
  35:     0x7ff9c98dac0d - <rustc_lint[bd45a0703fe9f065]::builtin::ClashingExternDeclarations as rustc_lint[bd45a0703fe9f065]::passes::LateLintPass>::check_foreign_item
  36:     0x7ff9c8b9d853 - rustc_interface[d38a371e72ccadf5]::callbacks::setup_callbacks
  37:     0x7ff9c9a653c1 - tracing_core[eb6a361351365179]::callsite::register_dispatch
  38:     0x7ff9c9a64f34 - tracing_core[eb6a361351365179]::callsite::register_dispatch
  39:     0x7ff9c9a65785 - tracing_core[eb6a361351365179]::callsite::register_dispatch
  40:     0x7ff9c8b9d1f5 - rustc_interface[d38a371e72ccadf5]::callbacks::setup_callbacks
  41:     0x7ff9c9a617c2 - tracing_core[eb6a361351365179]::callsite::register_dispatch
  42:     0x7ff9c8b89612 - rustc_interface[d38a371e72ccadf5]::util::commit_date_str
  43:     0x7ff9c8b899bc - rustc_interface[d38a371e72ccadf5]::util::commit_date_str
  44:     0x7ff9c8b7ac8a - <rustc_interface[d38a371e72ccadf5]::queries::Linker>::link
  45:     0x7ff9c8b8bb1c - rustc_interface[d38a371e72ccadf5]::util::commit_date_str
  46:     0x7ff9c8b82b4d - rustc_interface[d38a371e72ccadf5]::passes::analysis
  47:     0x7ff9c959c44e - <&[rustc_span[b3b8b508e7cd26ef]::def_id::DefId] as rustc_serialize[c3cf2e54bbdda217]::serialize::Decodable<rustc_query_impl[f8b2c5d5174158e4]::on_disk_cache::CacheDecoder>>::decode
  48:     0x7ff9c96ea0b6 - <&rustc_index[1917152cef6eef0]::vec::IndexVec<rustc_middle[f080ea4a7cc158b5]::mir::Promoted, rustc_middle[f080ea4a7cc158b5]::mir::Body> as rustc_serialize[c3cf2e54bbdda217]::serialize::Decodable<rustc_query_impl[f8b2c5d5174158e4]::on_disk_cache::CacheDecoder>>::decode
  49:     0x7ff9c96364ef - <&rustc_index[1917152cef6eef0]::vec::IndexVec<rustc_middle[f080ea4a7cc158b5]::mir::Promoted, rustc_middle[f080ea4a7cc158b5]::mir::Body> as rustc_serialize[c3cf2e54bbdda217]::serialize::Decodable<rustc_query_impl[f8b2c5d5174158e4]::on_disk_cache::CacheDecoder>>::decode
  50:     0x7ff9c96b96cd - <&rustc_index[1917152cef6eef0]::vec::IndexVec<rustc_middle[f080ea4a7cc158b5]::mir::Promoted, rustc_middle[f080ea4a7cc158b5]::mir::Body> as rustc_serialize[c3cf2e54bbdda217]::serialize::Decodable<rustc_query_impl[f8b2c5d5174158e4]::on_disk_cache::CacheDecoder>>::decode
  51:     0x7ff9c8b4cfdd - <rustc_middle[f080ea4a7cc158b5]::ty::SymbolName as core[1f2b1784ea6e9a42]::fmt::Display>::fmt
  52:     0x7ff9c8b45a55 - <unknown>
  53:     0x7ff9c8b5e107 - rustc_driver[39d376d6076eb2]::args::arg_expand_all
  54:     0x7ff9c8b47469 - <unknown>
  55:     0x7ff9c8b483ed - <rustc_middle[f080ea4a7cc158b5]::ty::SymbolName as core[1f2b1784ea6e9a42]::fmt::Display>::fmt
  56:     0x7ff9c84bf02c - std::sys::windows::thread::Thread::new::hdddbeea900b2c6ad
  57:     0x7ffa666d3fed - BaseThreadInitThunk
  58:     0x7ffa67a942a8 - RtlUserThreadStart

error: internal compiler error: unexpected panic

note: 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: rustc 1.64.0-nightly (c2f428d2f 2022-07-14) running on x86_64-pc-windows-msvc

note: compiler flags: --crate-type lib -C embed-bitcode=no -C debuginfo=2 -C incremental

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

query stack during panic:
#0 [is_sized_raw] computing whether `[(usize, &str)]` is `Sized`
#1 [layout_of] computing layout of `&[(usize, &str)]`
#2 [layout_of] computing layout of `Record<'_>`
#3 [analysis] running analysis passes on this crate
end of query stack

Playground uses 7-13 nightly still, and the code compiles there: https://play.rust-lang.org/?version=nightly&mode=debug&edition=2021&gist=acd29a81c627ac9cd863a0a3d843c72e

The text was updated successfully, but these errors were encountered:

5225225 · 2022-07-15T10:11:48Z

Hmmm... I can't seem to reproduce this.

Windows only, perhaps? Or incremental comp issue? I have the input in a src/lib.rs and am running cargo build.

bugadani · 2022-07-15T10:19:20Z

cargo clean followed by cargo build reproduces this for me. Might be Windows only, haven't tested elsewhere.

edit: my code originally failed in Github Actions using an ubuntu builder so I guess not Windows only.

bugadani · 2022-07-15T10:23:05Z

Yup, fails in WSL, too:

thread 'rustc' panicked at 'assertion failed: !value.has_escaping_bound_vars()', /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/compiler/rustc_middle/src/ty/sty.rs:1000:9

Backtrace

thread 'rustc' panicked at 'assertion failed: !value.has_escaping_bound_vars()', /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/compiler/rustc_middle/src/ty/sty.rs:1000:9
stack backtrace:
   0:     0x7f745f5f4950 - std::backtrace_rs::backtrace::libunwind::trace::heeafe1f1ea6b4c2f
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   1:     0x7f745f5f4950 - std::backtrace_rs::backtrace::trace_unsynchronized::hf08684e78cd6c167
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f745f5f4950 - std::sys_common::backtrace::_print_fmt::had9e99c2c8763a1e
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/sys_common/backtrace.rs:66:5
   3:     0x7f745f5f4950 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1b4c432d2a1e6303
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/sys_common/backtrace.rs:45:22
   4:     0x7f745f64df2c - core::fmt::write::h87085de871a99231
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/core/src/fmt/mod.rs:1198:17
   5:     0x7f745f5e6015 - std::io::Write::write_fmt::h7635d2f423aa55dc
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/io/mod.rs:1672:15
   6:     0x7f745f5f75e1 - std::sys_common::backtrace::_print::hc003bc1c22b7967b
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/sys_common/backtrace.rs:48:5
   7:     0x7f745f5f75e1 - std::sys_common::backtrace::print::h1baa1ab7758e52b0
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/sys_common/backtrace.rs:35:9
   8:     0x7f745f5f75e1 - std::panicking::default_hook::{{closure}}::he2f5e84c6ab77817
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/panicking.rs:295:22
   9:     0x7f745f5f72b3 - std::panicking::default_hook::h3f96069db270c68f
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/panicking.rs:314:9
  10:     0x7f745fe1ede4 - rustc_driver[1ce26eb46f30f4d]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7f745f5f7db6 - std::panicking::rust_panic_with_hook::hed0c1597bbc695a6
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/panicking.rs:702:17
  12:     0x7f745f5f7bc9 - std::panicking::begin_panic_handler::{{closure}}::h0fc9e6b3154da131
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/panicking.rs:586:13
  13:     0x7f745f5f4e34 - std::sys_common::backtrace::__rust_end_short_backtrace::hb9c2240a67931ff9
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/sys_common/backtrace.rs:138:18
  14:     0x7f745f5f7932 - rust_begin_unwind
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/panicking.rs:584:5
  15:     0x7f745f5bbc33 - core::panicking::panic_fmt::h6bda1b0556b509cd
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/core/src/panicking.rs:142:14
  16:     0x7f745f5bbafd - core::panicking::panic::h5c386340a9cd961d
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/core/src/panicking.rs:48:5
  17:     0x7f7461d2526d - rustc_trait_selection[cc111ae68c27c757]::traits::type_known_to_meet_bound_modulo_regions
  18:     0x7f7461525ff3 - <rustc_infer[25160dd56345bf64]::infer::InferCtxtBuilder>::enter::<bool, rustc_ty_utils[3b19a4d748ce0cab]::common_traits::is_item_raw::{closure#0}>
  19:     0x7f7461514c00 - rustc_ty_utils[3b19a4d748ce0cab]::common_traits::is_sized_raw
  20:     0x7f74619647f4 - <rustc_query_system[688aca7ce0d190ff]::dep_graph::graph::DepGraph<rustc_middle[d660d6fda8399c61]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[d660d6fda8399c61]::ty::context::TyCtxt, rustc_middle[d660d6fda8399c61]::ty::ParamEnvAnd<rustc_middle[d660d6fda8399c61]::ty::Ty>, bool>
  21:     0x7f74619dd40e - rustc_query_system[688aca7ce0d190ff]::query::plumbing::try_execute_query::<rustc_query_impl[e840a35d18f93fd8]::plumbing::QueryCtxt, rustc_query_system[688aca7ce0d190ff]::query::caches::DefaultCache<rustc_middle[d660d6fda8399c61]::ty::ParamEnvAnd<rustc_middle[d660d6fda8399c61]::ty::Ty>, bool>>
  22:     0x7f74619d353f - <rustc_query_impl[e840a35d18f93fd8]::Queries as rustc_middle[d660d6fda8399c61]::ty::query::QueryEngine>::is_sized_raw
  23:     0x7f7461e70ff9 - <rustc_middle[d660d6fda8399c61]::ty::Ty>::is_sized
  24:     0x7f7461ea4edc - <rustc_middle[d660d6fda8399c61]::ty::layout::LayoutCx<rustc_middle[d660d6fda8399c61]::ty::context::TyCtxt>>::layout_of_uncached
  25:     0x7f7461eb2c2b - rustc_middle[d660d6fda8399c61]::ty::layout::layout_of
  26:     0x7f7461a53fae - rustc_query_system[688aca7ce0d190ff]::query::plumbing::get_query::<rustc_query_impl[e840a35d18f93fd8]::queries::layout_of, rustc_query_impl[e840a35d18f93fd8]::plumbing::QueryCtxt>
  27:     0x7f74619d3760 - <rustc_query_impl[e840a35d18f93fd8]::Queries as rustc_middle[d660d6fda8399c61]::ty::query::QueryEngine>::layout_of
  28:     0x7f7461e53e89 - <core[32c218dbf3427c26]::iter::adapters::GenericShunt<core[32c218dbf3427c26]::iter::adapters::map::Map<core[32c218dbf3427c26]::slice::iter::Iter<rustc_middle[d660d6fda8399c61]::ty::FieldDef>, <rustc_middle[d660d6fda8399c61]::ty::layout::LayoutCx<rustc_middle[d660d6fda8399c61]::ty::context::TyCtxt>>::layout_of_uncached::{closure#5}::{closure#0}>, core[32c218dbf3427c26]::result::Result<core[32c218dbf3427c26]::convert::Infallible, rustc_middle[d660d6fda8399c61]::ty::layout::LayoutError>> as core[32c218dbf3427c26]::iter::traits::iterator::Iterator>::next
  29:     0x7f7461e9816b - <alloc[924ca5cfede8f4b5]::vec::Vec<alloc[924ca5cfede8f4b5]::vec::Vec<rustc_target[5588730283615731]::abi::TyAndLayout<rustc_middle[d660d6fda8399c61]::ty::Ty>>> as alloc[924ca5cfede8f4b5]::vec::spec_from_iter::SpecFromIter<alloc[924ca5cfede8f4b5]::vec::Vec<rustc_target[5588730283615731]::abi::TyAndLayout<rustc_middle[d660d6fda8399c61]::ty::Ty>>, core[32c218dbf3427c26]::iter::adapters::GenericShunt<core[32c218dbf3427c26]::iter::adapters::map::Map<core[32c218dbf3427c26]::slice::iter::Iter<rustc_middle[d660d6fda8399c61]::ty::VariantDef>, <rustc_middle[d660d6fda8399c61]::ty::layout::LayoutCx<rustc_middle[d660d6fda8399c61]::ty::context::TyCtxt>>::layout_of_uncached::{closure#5}>, core[32c218dbf3427c26]::result::Result<core[32c218dbf3427c26]::convert::Infallible, rustc_middle[d660d6fda8399c61]::ty::layout::LayoutError>>>>::from_iter
  30:     0x7f7461ea4ab2 - <rustc_middle[d660d6fda8399c61]::ty::layout::LayoutCx<rustc_middle[d660d6fda8399c61]::ty::context::TyCtxt>>::layout_of_uncached
  31:     0x7f7461eb2c2b - rustc_middle[d660d6fda8399c61]::ty::layout::layout_of
  32:     0x7f7461a53fae - rustc_query_system[688aca7ce0d190ff]::query::plumbing::get_query::<rustc_query_impl[e840a35d18f93fd8]::queries::layout_of, rustc_query_impl[e840a35d18f93fd8]::plumbing::QueryCtxt>
  33:     0x7f74619d3760 - <rustc_query_impl[e840a35d18f93fd8]::Queries as rustc_middle[d660d6fda8399c61]::ty::query::QueryEngine>::layout_of
  34:     0x7f7460c87f2e - <rustc_lint[29b7bb3d78c0e7f4]::context::LateContext as rustc_middle[d660d6fda8399c61]::ty::layout::LayoutOf>::spanned_layout_of
  35:     0x7f7460c888de - <rustc_lint[29b7bb3d78c0e7f4]::builtin::ClashingExternDeclarations>::structurally_same_type::structurally_same_type_impl::{closure#1}
  36:     0x7f74627ab07c - <rustc_lint[29b7bb3d78c0e7f4]::builtin::ClashingExternDeclarations>::structurally_same_type::structurally_same_type_impl
  37:     0x7f74627ab36b - <rustc_lint[29b7bb3d78c0e7f4]::builtin::ClashingExternDeclarations>::structurally_same_type::structurally_same_type_impl
  38:     0x7f74627ab31d - <rustc_lint[29b7bb3d78c0e7f4]::builtin::ClashingExternDeclarations>::structurally_same_type::structurally_same_type_impl
  39:     0x7f74627abbba - <rustc_lint[29b7bb3d78c0e7f4]::builtin::ClashingExternDeclarations as rustc_lint[29b7bb3d78c0e7f4]::passes::LateLintPass>::check_foreign_item
  40:     0x7f746203a025 - <rustc_lint[29b7bb3d78c0e7f4]::late::LateContextAndPass<rustc_lint[29b7bb3d78c0e7f4]::BuiltinCombinedLateLintPass> as rustc_hir[d9bcc83df3a1d79d]::intravisit::Visitor>::visit_nested_foreign_item
  41:     0x7f746115aa18 - rustc_hir[d9bcc83df3a1d79d]::intravisit::walk_item::<rustc_lint[29b7bb3d78c0e7f4]::late::LateContextAndPass<rustc_lint[29b7bb3d78c0e7f4]::BuiltinCombinedLateLintPass>>
  42:     0x7f74611599ea - rustc_hir[d9bcc83df3a1d79d]::intravisit::walk_mod::<rustc_lint[29b7bb3d78c0e7f4]::late::LateContextAndPass<rustc_lint[29b7bb3d78c0e7f4]::BuiltinCombinedLateLintPass>>
  43:     0x7f746115adcc - rustc_hir[d9bcc83df3a1d79d]::intravisit::walk_item::<rustc_lint[29b7bb3d78c0e7f4]::late::LateContextAndPass<rustc_lint[29b7bb3d78c0e7f4]::BuiltinCombinedLateLintPass>>
  44:     0x7f7462039a0b - <rustc_lint[29b7bb3d78c0e7f4]::late::LateContextAndPass<rustc_lint[29b7bb3d78c0e7f4]::BuiltinCombinedLateLintPass> as rustc_hir[d9bcc83df3a1d79d]::intravisit::Visitor>::visit_nested_item
  45:     0x7f746114f88f - rustc_lint[29b7bb3d78c0e7f4]::late::late_lint_crate::<rustc_lint[29b7bb3d78c0e7f4]::BuiltinCombinedLateLintPass>
  46:     0x7f746202d569 - <rustc_session[4ac326324d613686]::session::Session>::time::<(), rustc_lint[29b7bb3d78c0e7f4]::late::check_crate<rustc_lint[29b7bb3d78c0e7f4]::BuiltinCombinedLateLintPass, rustc_interface[694c7ab70a1d38bc]::passes::analysis::{closure#5}::{closure#1}::{closure#2}::{closure#0}::{closure#0}>::{closure#0}::{closure#0}>
  47:     0x7f746202d870 - <rustc_session[4ac326324d613686]::session::Session>::time::<(), rustc_interface[694c7ab70a1d38bc]::passes::analysis::{closure#5}::{closure#1}::{closure#2}::{closure#0}>
  48:     0x7f746201e9e1 - <core[32c218dbf3427c26]::panic::unwind_safe::AssertUnwindSafe<rustc_interface[694c7ab70a1d38bc]::passes::analysis::{closure#5}::{closure#1}> as core[32c218dbf3427c26]::ops::function::FnOnce<()>>::call_once
  49:     0x7f746202f06a - <rustc_session[4ac326324d613686]::session::Session>::time::<(), rustc_interface[694c7ab70a1d38bc]::passes::analysis::{closure#5}>
  50:     0x7f7462019eec - rustc_interface[694c7ab70a1d38bc]::passes::analysis
  51:     0x7f74624e706c - <rustc_query_system[688aca7ce0d190ff]::dep_graph::graph::DepGraph<rustc_middle[d660d6fda8399c61]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[d660d6fda8399c61]::ty::context::TyCtxt, (), core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>
  52:     0x7f7462581d1b - rustc_query_system[688aca7ce0d190ff]::query::plumbing::try_execute_query::<rustc_query_impl[e840a35d18f93fd8]::plumbing::QueryCtxt, rustc_query_system[688aca7ce0d190ff]::query::caches::DefaultCache<(), core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>>
  53:     0x7f74625df74e - rustc_query_system[688aca7ce0d190ff]::query::plumbing::get_query::<rustc_query_impl[e840a35d18f93fd8]::queries::analysis, rustc_query_impl[e840a35d18f93fd8]::plumbing::QueryCtxt>
  54:     0x7f7461ffd41e - <rustc_interface[694c7ab70a1d38bc]::passes::QueryContext>::enter::<rustc_driver[1ce26eb46f30f4d]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>
  55:     0x7f7461fe109e - <rustc_interface[694c7ab70a1d38bc]::interface::Compiler>::enter::<rustc_driver[1ce26eb46f30f4d]::run_compiler::{closure#1}::{closure#2}, core[32c218dbf3427c26]::result::Result<core[32c218dbf3427c26]::option::Option<rustc_interface[694c7ab70a1d38bc]::queries::Linker>, rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>
  56:     0x7f7461fdd1ff - rustc_span[717885ec7c6cd182]::with_source_map::<core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>, rustc_interface[694c7ab70a1d38bc]::interface::create_compiler_and_run<core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>, rustc_driver[1ce26eb46f30f4d]::run_compiler::{closure#1}>::{closure#1}>
  57:     0x7f7461ff94b0 - rustc_interface[694c7ab70a1d38bc]::interface::create_compiler_and_run::<core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>, rustc_driver[1ce26eb46f30f4d]::run_compiler::{closure#1}>
  58:     0x7f746200d5b2 - <scoped_tls[f235d80db834c386]::ScopedKey<rustc_span[717885ec7c6cd182]::SessionGlobals>>::set::<rustc_interface[694c7ab70a1d38bc]::interface::run_compiler<core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>, rustc_driver[1ce26eb46f30f4d]::run_compiler::{closure#1}>::{closure#0}, core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>
  59:     0x7f7461fdf78f - std[167b23ae759531ff]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[694c7ab70a1d38bc]::util::run_in_thread_pool_with_globals<rustc_interface[694c7ab70a1d38bc]::interface::run_compiler<core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>, rustc_driver[1ce26eb46f30f4d]::run_compiler::{closure#1}>::{closure#0}, core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>::{closure#0}, core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>
  60:     0x7f7461ff9909 - <<std[167b23ae759531ff]::thread::Builder>::spawn_unchecked_<rustc_interface[694c7ab70a1d38bc]::util::run_in_thread_pool_with_globals<rustc_interface[694c7ab70a1d38bc]::interface::run_compiler<core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>, rustc_driver[1ce26eb46f30f4d]::run_compiler::{closure#1}>::{closure#0}, core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>::{closure#0}, core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>::{closure#1} as core[32c218dbf3427c26]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  61:     0x7f745f601803 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h86b1834fb0da834b
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/alloc/src/boxed.rs:1934:9
  62:     0x7f745f601803 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h124d05192aaf60e0
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/alloc/src/boxed.rs:1934:9
  63:     0x7f745f601803 - std::sys::unix::thread::Thread::new::thread_start::h01e8d05fb6e030ea
                               at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/sys/unix/thread.rs:108:17
  64:     0x7f745f517609 - start_thread
  65:     0x7f745f43a133 - clone
  66:                0x0 - <unknown>

error: internal compiler error: unexpected panic

note: 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: rustc 1.64.0-nightly (c2f428d2f 2022-07-14) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type lib -C embed-bitcode=no -C debuginfo=2 -C incremental

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

query stack during panic:
#0 [is_sized_raw] computing whether `[&str]` is `Sized`
#1 [layout_of] computing layout of `&[&str]`
#2 [layout_of] computing layout of `Record<'_, '_>`
#3 [analysis] running analysis passes on this crate
end of query stack
warning: `demo` (lib) generated 3 warnings
error: could not compile `demo`; 3 warnings emitted
 ✘ dani@DESKTOP-DUL3MLM  ~/demo   master  rustc -vV                                                                                                                                                                                   (master|…3)
rustc 1.64.0-nightly (c2f428d2f 2022-07-14)
binary: rustc
commit-hash: c2f428d2f3340a0e7d995f4726223db91b93704c
commit-date: 2022-07-14
host: x86_64-unknown-linux-gnu
release: 1.64.0-nightly
LLVM version: 14.0.6

ChrisDenton · 2022-07-15T10:39:31Z

It fails on latest nightly for me.

Failing version:

> rustc +nightly-2022-07-15 --version --verbose
rustc 1.64.0-nightly (c2f428d2f 2022-07-14)
binary: rustc
commit-hash: c2f428d2f3340a0e7d995f4726223db91b93704c
commit-date: 2022-07-14
host: x86_64-pc-windows-msvc
release: 1.64.0-nightly
LLVM version: 14.0.6

Working version:

> rustc +nightly-2022-07-14 --version --verbose
rustc 1.64.0-nightly (87588a2af 2022-07-13)
binary: rustc
commit-hash: 87588a2afd9ca903366f0deaf84d805f34469384
commit-date: 2022-07-13
host: x86_64-pc-windows-msvc
release: 1.64.0-nightly
LLVM version: 14.0.6

5225225 · 2022-07-15T11:03:41Z

Ahh! I was testing 2022-07-14, which passes. I got confused by the --version date being 1 day off.

Yeah, I can reproduce it now :) Running a bisect.

5225225 · 2022-07-15T11:06:50Z

searched nightlies: from nightly-2022-07-13 to nightly-2022-07-15
regressed nightly: nightly-2022-07-15
searched commit range: 87588a2...c2f428d
regressed commit: f1a8854

bisected with cargo-bisect-rustc v0.6.1

Host triple: x86_64-unknown-linux-gnu
Reproduce with:

cargo bisect-rustc --start 2022-07-13 --end 2022-07-15 --regress ice -- build

lqd · 2022-07-15T11:54:56Z

#99231 is yet another rollup; we really need a try build for each rolled up PR...

Out of:

Always create elided lifetime parameters for functions #97720 (Always create elided lifetime parameters for functions)
Stabilize core::ffi:c_* and re-export in std::ffi #98315 (Stabilize core::ffi:c_* and rexport in std::ffi)
Implement for<> lifetime binder for closures #98705 (Implement for<> lifetime binder for closures)
remove allow(rustc::potential_query_instability) in rustc_span #99126 (remove allow(rustc::potential_query_instability) in rustc_span)
Give a better error when x dist fails for an optional tool #99139 (Give a better error when x dist fails for an optional tool)

This looks like #97720 cc @cjgillot.

cjgillot · 2022-07-18T18:36:51Z

This is a variant of the following bug which already happens on stable:

pub struct Record<'a> {
    pub args: &'a [(usize, &'a str)],
}

mod a {
    extern "Rust" {
        fn foo<'a, 'b>(record: &'a super::Record<'b>);
    }
}

mod b {
    extern "Rust" {
        fn foo<'a, 'b>(record: &'a super::Record<'b>);
    }
}

bugadani added 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. labels Jul 15, 2022

ChrisDenton added the regression-from-stable-to-nightly Performance or correctness regression from stable to nightly. label Jul 15, 2022

rustbot added the I-prioritize Issue: Indicates that prioritization has been requested for this issue. label Jul 15, 2022

cjgillot self-assigned this Jul 18, 2022

cjgillot mentioned this issue Jul 18, 2022

Erase regions before comparing signatures of foreign fns. #99433

Merged

apiraino removed the I-prioritize Issue: Indicates that prioritization has been requested for this issue. label Jul 20, 2022

bors closed this as completed in f02bbbc Jul 20, 2022

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Regression when compiling with 07-14 nightly #99276

Regression when compiling with 07-14 nightly #99276

bugadani commented Jul 15, 2022

5225225 commented Jul 15, 2022

bugadani commented Jul 15, 2022 •

edited

Loading

bugadani commented Jul 15, 2022

ChrisDenton commented Jul 15, 2022

5225225 commented Jul 15, 2022

5225225 commented Jul 15, 2022

lqd commented Jul 15, 2022

cjgillot commented Jul 18, 2022

Regression when compiling with 07-14 nightly #99276

Regression when compiling with 07-14 nightly #99276

Comments

bugadani commented Jul 15, 2022

Code

Meta

Error output

5225225 commented Jul 15, 2022

bugadani commented Jul 15, 2022 • edited Loading

bugadani commented Jul 15, 2022

ChrisDenton commented Jul 15, 2022

5225225 commented Jul 15, 2022

5225225 commented Jul 15, 2022

lqd commented Jul 15, 2022

cjgillot commented Jul 18, 2022

bugadani commented Jul 15, 2022 •

edited

Loading