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ICE: unexpected unresolved segments #109146

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matthiaskrgr opened this issue Mar 14, 2023 · 5 comments · Fixed by #109348
Closed

ICE: unexpected unresolved segments #109146

matthiaskrgr opened this issue Mar 14, 2023 · 5 comments · Fixed by #109348
Labels
C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue 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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Code

extern crate alloc as b;

mod foo {

    mod bar {

        pub(in b::string::String::newy) extern crate alloc as e;
    }
}

Meta

rustc --version --verbose:

rustc 1.70.0-nightly (22f247c6f 2023-03-13)
binary: rustc
commit-hash: 22f247c6f3ed388cb702d01c2ff27da658a8b353
commit-date: 2023-03-13
host: x86_64-unknown-linux-gnu
release: 1.70.0-nightly
LLVM version: 15.0.7

Error output

<output>
Backtrace 

thread 'rustc' panicked at 'unexpected unresolved segments', /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/compiler/rustc_hir/src/def.rs:482:25
stack backtrace:
   0:     0x7f28ececd51a - std::backtrace_rs::backtrace::libunwind::trace::h1ac6254167c780d9
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f28ececd51a - std::backtrace_rs::backtrace::trace_unsynchronized::hec2af85915e24f36
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f28ececd51a - std::sys_common::backtrace::_print_fmt::h58a4e3535fcce206
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f28ececd51a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h5107e13758b8321c
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f28ecf30c5e - core::fmt::write::h2e851dc027730d81
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/core/src/fmt/mod.rs:1232:17
   5:     0x7f28ecec0375 - std::io::Write::write_fmt::hca00074de9f85084
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/std/src/io/mod.rs:1684:15
   6:     0x7f28ececd2e5 - std::sys_common::backtrace::_print::h870053c845cddf24
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7f28ececd2e5 - std::sys_common::backtrace::print::hb56add862f96c5fd
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7f28eced005f - std::panicking::default_hook::{{closure}}::h636d4ba3ff8fdc46
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/std/src/panicking.rs:271:22
   9:     0x7f28ececfd9b - std::panicking::default_hook::hf29b58145ee6e43c
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/std/src/panicking.rs:290:9
  10:     0x7f28ebc580c5 - <rustc_driver_impl[74350ec99973fded]::DEFAULT_HOOK::{closure#0}::{closure#0} as core[2011dc7817943e09]::ops::function::FnOnce<(&core[2011dc7817943e09]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
  11:     0x7f28eced089d - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h7342d57f33f6634f
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/alloc/src/boxed.rs:2002:9
  12:     0x7f28eced089d - std::panicking::rust_panic_with_hook::hbf9ef936d990c16f
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/std/src/panicking.rs:696:13
  13:     0x7f28eced0619 - std::panicking::begin_panic_handler::{{closure}}::h6be6433dcb901f4b
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/std/src/panicking.rs:583:13
  14:     0x7f28ececd986 - std::sys_common::backtrace::__rust_end_short_backtrace::h802b6104a4d80829
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/std/src/sys_common/backtrace.rs:150:18
  15:     0x7f28eced0322 - rust_begin_unwind
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/std/src/panicking.rs:579:5
  16:     0x7f28ecf2cfb3 - core::panicking::panic_fmt::hf7a8a88b9669732e
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/core/src/panicking.rs:64:14
  17:     0x7f28ecf2d121 - core::panicking::panic_display::ha14ecfa86c697326
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/core/src/panicking.rs:147:5
  18:     0x7f28ecf2d0cb - core::panicking::panic_str::h0f5ad79b66e15d80
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/core/src/panicking.rs:131:5
  19:     0x7f28ecf2cd36 - core::option::expect_failed::h6e9ae5a1d735f1ff
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/core/src/option.rs:2091:5
  20:     0x7f28ea904f96 - <rustc_resolve[d14f6814014285f]::build_reduced_graph::BuildReducedGraphVisitor>::resolve_visibility
  21:     0x7f28ea9017fe - <rustc_resolve[d14f6814014285f]::build_reduced_graph::BuildReducedGraphVisitor as rustc_ast[648a34948e2edeac]::visit::Visitor>::visit_item
  22:     0x7f28ea9056c5 - rustc_ast[648a34948e2edeac]::visit::walk_item::<rustc_resolve[d14f6814014285f]::build_reduced_graph::BuildReducedGraphVisitor>
  23:     0x7f28ea901acd - <rustc_resolve[d14f6814014285f]::build_reduced_graph::BuildReducedGraphVisitor as rustc_ast[648a34948e2edeac]::visit::Visitor>::visit_item
  24:     0x7f28ea9056c5 - rustc_ast[648a34948e2edeac]::visit::walk_item::<rustc_resolve[d14f6814014285f]::build_reduced_graph::BuildReducedGraphVisitor>
  25:     0x7f28ea901acd - <rustc_resolve[d14f6814014285f]::build_reduced_graph::BuildReducedGraphVisitor as rustc_ast[648a34948e2edeac]::visit::Visitor>::visit_item
  26:     0x7f28ea8ff76e - <rustc_resolve[d14f6814014285f]::Resolver as rustc_expand[fc967681d49b502a]::base::ResolverExpand>::visit_ast_fragment_with_placeholders
  27:     0x7f28ea8f7be2 - <rustc_expand[fc967681d49b502a]::expand::MacroExpander>::fully_expand_fragment
  28:     0x7f28ead9e527 - <rustc_expand[fc967681d49b502a]::expand::MacroExpander>::expand_crate
  29:     0x7f28ead9d983 - <rustc_session[a360c2d099171c08]::session::Session>::time::<rustc_ast[648a34948e2edeac]::ast::Crate, rustc_interface[ceda1fd77ec39e1b]::passes::configure_and_expand::{closure#1}>
  30:     0x7f28ead4022b - rustc_interface[ceda1fd77ec39e1b]::passes::resolver_for_lowering
  31:     0x7f28eb45eb8f - rustc_query_system[f881c7f40ee7dcf0]::query::plumbing::try_execute_query::<rustc_query_impl[eb95ff51c492efdd]::queries::resolver_for_lowering, rustc_query_impl[eb95ff51c492efdd]::plumbing::QueryCtxt>
  32:     0x7f28eb45e890 - <rustc_query_impl[eb95ff51c492efdd]::Queries as rustc_middle[eaae5d2a0b8f0144]::ty::query::QueryEngine>::resolver_for_lowering
  33:     0x7f28eb28f1f4 - <rustc_middle[eaae5d2a0b8f0144]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[74350ec99973fded]::run_compiler::{closure#1}::{closure#2}::{closure#2}, &rustc_data_structures[75b47a18491287a9]::steal::Steal<(rustc_middle[eaae5d2a0b8f0144]::ty::ResolverAstLowering, alloc[b7ae3602ac956de8]::rc::Rc<rustc_ast[648a34948e2edeac]::ast::Crate>)>>
  34:     0x7f28eae8ee32 - rustc_span[18b84908941c7cdf]::with_source_map::<core[2011dc7817943e09]::result::Result<(), rustc_span[18b84908941c7cdf]::ErrorGuaranteed>, rustc_interface[ceda1fd77ec39e1b]::interface::run_compiler<core[2011dc7817943e09]::result::Result<(), rustc_span[18b84908941c7cdf]::ErrorGuaranteed>, rustc_driver_impl[74350ec99973fded]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  35:     0x7f28eae8616c - std[1337fb43929788f1]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[ceda1fd77ec39e1b]::util::run_in_thread_pool_with_globals<rustc_interface[ceda1fd77ec39e1b]::interface::run_compiler<core[2011dc7817943e09]::result::Result<(), rustc_span[18b84908941c7cdf]::ErrorGuaranteed>, rustc_driver_impl[74350ec99973fded]::run_compiler::{closure#1}>::{closure#0}, core[2011dc7817943e09]::result::Result<(), rustc_span[18b84908941c7cdf]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[2011dc7817943e09]::result::Result<(), rustc_span[18b84908941c7cdf]::ErrorGuaranteed>>
  36:     0x7f28eae85b9a - <<std[1337fb43929788f1]::thread::Builder>::spawn_unchecked_<rustc_interface[ceda1fd77ec39e1b]::util::run_in_thread_pool_with_globals<rustc_interface[ceda1fd77ec39e1b]::interface::run_compiler<core[2011dc7817943e09]::result::Result<(), rustc_span[18b84908941c7cdf]::ErrorGuaranteed>, rustc_driver_impl[74350ec99973fded]::run_compiler::{closure#1}>::{closure#0}, core[2011dc7817943e09]::result::Result<(), rustc_span[18b84908941c7cdf]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[2011dc7817943e09]::result::Result<(), rustc_span[18b84908941c7cdf]::ErrorGuaranteed>>::{closure#1} as core[2011dc7817943e09]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  37:     0x7f28eceda793 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7e0474dd3b8659fa
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/alloc/src/boxed.rs:1988:9
  38:     0x7f28eceda793 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::heb8c41cf543a5c11
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/alloc/src/boxed.rs:1988:9
  39:     0x7f28eceda793 - std::sys::unix::thread::Thread::new::thread_start::hc791abe67253fe06
                               at /rustc/22f247c6f3ed388cb702d01c2ff27da658a8b353/library/std/src/sys/unix/thread.rs:108:17
  40:     0x7f28e8867bb5 - <unknown>
  41:     0x7f28e88e9d90 - <unknown>
  42:                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: rustc 1.70.0-nightly (22f247c6f 2023-03-13) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [resolver_for_lowering] getting the resolver for lowering
end of query stack

@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 Mar 14, 2023
@matthiaskrgr matthiaskrgr mentioned this issue Mar 14, 2023
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@langston-barrett
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@rustbot glacier "https://gist.github.com/langston-barrett/525891e7eee9915ac2a5571b874ab781"

@langston-barrett langston-barrett mentioned this issue Mar 15, 2023
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@matthiaskrgr
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searched nightlies: from nightly-2022-10-05 to nightly-2023-03-16
regressed nightly: nightly-2022-10-12
searched commit range: a6b7274...db0597f
regressed commit: db0597f

@albertlarsan68
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Newer version of cargo-bisect-rustc can bisect through rollups

@matthiaskrgr
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The one that is not released yet? 😄
Thx, will install git then.. :)

@langston-barrett
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@rustbot label +S-bug-has-mcve

@rustbot rustbot added the S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue label Mar 17, 2023
@cjgillot cjgillot mentioned this issue Mar 19, 2023
Merged
@bors bors closed this as completed in 28b6607 Aug 5, 2023
github-actions bot pushed a commit to rust-lang/miri that referenced this issue Aug 8, 2023
@bors
Auto merge of #109348 - cjgillot:issue-109146, r=petrochenkov
6b28b06 
Resolve visibility paths as modules not as types.

Asking for a resolution with `opt_ns = Some(TypeNS)` allows path resolution to look for type-relative paths, leaving unresolved segments behind. However, for visibility paths we really need to look for a module, so we need to pass `opt_ns = None`.

Fixes rust-lang/rust#109146

r? `@petrochenkov`
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C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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Resolve visibility paths as modules not as types. cjgillot/rust
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@matthiaskrgr @langston-barrett @rustbot @albertlarsan68