rustdoc: entered unreachable code

[matthiaskrgr]

Code

rustdoc src/librustdoc/clean/mod.rs

<code>

Meta

rustc --version --verbose:

rustdoc 1.64.0-nightly (fe3342816 2022-08-01)
binary: rustdoc
commit-hash: fe3342816a282949f014caa05ea2e669ff9d3d3c
commit-date: 2022-08-01
host: x86_64-unknown-linux-gnu
release: 1.64.0-nightly
LLVM version: 14.0.6

rustdoc src/librustdoc/clean/mod.rs

Backtrace

....
error[E0658]: box pattern syntax is experimental
    --> src/librustdoc/clean/types.rs:1616:46
     |
1616 |             Slice(..) | BorrowedRef { type_: box Slice(..), .. } => Some(PrimitiveType::Slice),
     |                                              ^^^^^^^^^^^^^
     |
     = note: see issue #29641 <https://github.com/rust-lang/rust/issues/29641> for more information
     = help: add `#![feature(box_patterns)]` to the crate attributes to enable

error[E0658]: box pattern syntax is experimental
    --> src/librustdoc/clean/types.rs:1617:46
     |
1617 |             Array(..) | BorrowedRef { type_: box Array(..), .. } => Some(PrimitiveType::Array),
     |                                              ^^^^^^^^^^^^^
     |
     = note: see issue #29641 <https://github.com/rust-lang/rust/issues/29641> for more information
     = help: add `#![feature(box_patterns)]` to the crate attributes to enable

error[E0658]: box pattern syntax is experimental
    --> src/librustdoc/clean/types.rs:1674:34
     |
1674 |             BorrowedRef { type_: box Generic(..), .. } => PrimitiveType::Reference,
     |                                  ^^^^^^^^^^^^^^^
     |
     = note: see issue #29641 <https://github.com/rust-lang/rust/issues/29641> for more information
     = help: add `#![feature(box_patterns)]` to the crate attributes to enable

thread 'rustc' panicked at 'internal error: entered unreachable code', compiler/rustc_resolve/src/lib.rs:1912:67
stack backtrace:
   0:     0x7fd188fc8b70 - std::backtrace_rs::backtrace::libunwind::trace::h83eef7e1b99ceac2
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   1:     0x7fd188fc8b70 - std::backtrace_rs::backtrace::trace_unsynchronized::h11443e110f08dce7
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fd188fc8b70 - std::sys_common::backtrace::_print_fmt::h98d30f5880b6fe77
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/std/src/sys_common/backtrace.rs:66:5
   3:     0x7fd188fc8b70 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb3fb4cc2aa6407b5
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/std/src/sys_common/backtrace.rs:45:22
   4:     0x7fd189023f7c - core::fmt::write::h4e85f46dfec88905
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/core/src/fmt/mod.rs:1198:17
   5:     0x7fd188fb9dc5 - std::io::Write::write_fmt::h9357fcb2dba5c229
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/std/src/io/mod.rs:1672:15
   6:     0x7fd188fcb841 - std::sys_common::backtrace::_print::h8e18b949553d004a
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/std/src/sys_common/backtrace.rs:48:5
   7:     0x7fd188fcb841 - std::sys_common::backtrace::print::h60d8e98dad938672
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/std/src/sys_common/backtrace.rs:35:9
   8:     0x7fd188fcb841 - std::panicking::default_hook::{{closure}}::hbe18146ce199bf86
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/std/src/panicking.rs:295:22
   9:     0x7fd188fcb513 - std::panicking::default_hook::h1d233b95c05e4774
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/std/src/panicking.rs:314:9
  10:     0x7fd18b8480d4 - <rustc_driver[8b04a589e2b44e89]::DEFAULT_HOOK::{closure#0}::{closure#0} as core[cdc6a31a4cbccd39]::ops::function::FnOnce<(&core[cdc6a31a4cbccd39]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
  11:     0x7fd188fcc076 - std::panicking::rust_panic_with_hook::h4bd240a94f5d8396
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/std/src/panicking.rs:702:17
  12:     0x7fd188fcbe89 - std::panicking::begin_panic_handler::{{closure}}::hd2974ad90d6aceb2
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/std/src/panicking.rs:586:13
  13:     0x7fd188fc9094 - std::sys_common::backtrace::__rust_end_short_backtrace::h47aa8b9750307fbb
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/std/src/sys_common/backtrace.rs:138:18
  14:     0x7fd188fcbbf2 - rust_begin_unwind
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/std/src/panicking.rs:584:5
  15:     0x7fd189020a53 - core::panicking::panic_fmt::h6e77553746513d00
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/core/src/panicking.rs:142:14
  16:     0x7fd18902089d - core::panicking::panic::hdc34fd4df4a7315e
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/core/src/panicking.rs:48:5
  17:     0x7fd18bd065df - <rustc_resolve[e35959aaa459184]::Resolver>::resolve_rustdoc_path
  18:     0x564dcf7d50a7 - <rustdoc[30c353d87c1f2e80]::passes::collect_intra_doc_links::early::EarlyDocLinkResolver>::resolve_doc_links
  19:     0x564dcf7d6428 - <rustdoc[30c353d87c1f2e80]::passes::collect_intra_doc_links::early::EarlyDocLinkResolver as rustc_ast[cdfd466c058d0aad]::visit::Visitor>::visit_item
  20:     0x564dcf85bb7a - rustc_ast[cdfd466c058d0aad]::visit::walk_item::<rustdoc[30c353d87c1f2e80]::passes::collect_intra_doc_links::early::EarlyDocLinkResolver>
  21:     0x564dcf7d6504 - <rustdoc[30c353d87c1f2e80]::passes::collect_intra_doc_links::early::EarlyDocLinkResolver as rustc_ast[cdfd466c058d0aad]::visit::Visitor>::visit_item
  22:     0x564dcf858a09 - rustc_ast[cdfd466c058d0aad]::visit::walk_crate::<rustdoc[30c353d87c1f2e80]::passes::collect_intra_doc_links::early::EarlyDocLinkResolver>
  23:     0x564dcf7d21a3 - rustdoc[30c353d87c1f2e80]::passes::collect_intra_doc_links::early::early_resolve_intra_doc_links
  24:     0x564dcf90ac9e - <rustc_interface[507fe53e0572d3d2]::interface::Compiler>::enter::<rustdoc[30c353d87c1f2e80]::main_options::{closure#0}::{closure#0}, core[cdc6a31a4cbccd39]::result::Result<(), rustc_errors[fcb91965fb6576e9]::ErrorGuaranteed>>
  25:     0x564dcfaeb48c - rustc_span[6e576ba6dd4e221]::with_source_map::<core[cdc6a31a4cbccd39]::result::Result<(), rustc_errors[fcb91965fb6576e9]::ErrorGuaranteed>, rustc_interface[507fe53e0572d3d2]::interface::create_compiler_and_run<core[cdc6a31a4cbccd39]::result::Result<(), rustc_errors[fcb91965fb6576e9]::ErrorGuaranteed>, rustdoc[30c353d87c1f2e80]::main_options::{closure#0}>::{closure#1}>
  26:     0x564dcf90cd1b - rustc_interface[507fe53e0572d3d2]::interface::create_compiler_and_run::<core[cdc6a31a4cbccd39]::result::Result<(), rustc_errors[fcb91965fb6576e9]::ErrorGuaranteed>, rustdoc[30c353d87c1f2e80]::main_options::{closure#0}>
  27:     0x564dcf7e2bc2 - rustdoc[30c353d87c1f2e80]::main_options
  28:     0x564dcf98db9c - <scoped_tls[5bea244f1759cc4a]::ScopedKey<rustc_span[6e576ba6dd4e221]::SessionGlobals>>::set::<rustdoc[30c353d87c1f2e80]::main_args::{closure#0}, core[cdc6a31a4cbccd39]::result::Result<(), rustc_errors[fcb91965fb6576e9]::ErrorGuaranteed>>
  29:     0x564dcfa5f49f - std[470ad8214e061e82]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[507fe53e0572d3d2]::util::run_in_thread_pool_with_globals<rustdoc[30c353d87c1f2e80]::main_args::{closure#0}, core[cdc6a31a4cbccd39]::result::Result<(), rustc_errors[fcb91965fb6576e9]::ErrorGuaranteed>>::{closure#0}, core[cdc6a31a4cbccd39]::result::Result<(), rustc_errors[fcb91965fb6576e9]::ErrorGuaranteed>>
  30:     0x564dcf9409e9 - <<std[470ad8214e061e82]::thread::Builder>::spawn_unchecked_<rustc_interface[507fe53e0572d3d2]::util::run_in_thread_pool_with_globals<rustdoc[30c353d87c1f2e80]::main_args::{closure#0}, core[cdc6a31a4cbccd39]::result::Result<(), rustc_errors[fcb91965fb6576e9]::ErrorGuaranteed>>::{closure#0}, core[cdc6a31a4cbccd39]::result::Result<(), rustc_errors[fcb91965fb6576e9]::ErrorGuaranteed>>::{closure#1} as core[cdc6a31a4cbccd39]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  31:     0x7fd188fd5cb3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd91dcbcc80c66aa0
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/alloc/src/boxed.rs:1935:9
  32:     0x7fd188fd5cb3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h36fdba9d16140431
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/alloc/src/boxed.rs:1935:9
  33:     0x7fd188fd5cb3 - std::sys::unix::thread::Thread::new::thread_start::h3bd76bb7cb4b4d75
                               at /rustc/fe3342816a282949f014caa05ea2e669ff9d3d3c/library/std/src/sys/unix/thread.rs:108:17
  34:     0x7fd188ced54d - <unknown>
  35:     0x7fd188d72874 - clone
  36:                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 (fe3342816 2022-08-01) running on x86_64-unknown-linux-gnu

query stack during panic:
end of query stack
error: aborting due to 191 previous errors

Some errors have detailed explanations: E0432, E0433, E0658, E0659.
For more information about an error, try `rustc --explain E0432`.

[matthiaskrgr]

tried to reduce a bit 🤔

mod auto_trait;
pub(crate) mod types;
use rustc_middle::ty::{self};
pub(crate) use self::types::*;

[petrochenkov]

Fixed in #103096.