ICE: `SizeSkeleton::compute` layout errored in `layout.rs`
langston-barrett opened this issue · 2 comments
langston-barrett commented
This is a fuzzed test case, found with tree-splicer and minimized with treereduce. I hope it's valid, please let me know (and many apologies) if it's not helpful! I searched the issue tracker like so, but found no similar issues.
Code
struct Foo(Option<Box<Fn(&EContext)>>);
const TRANSMUTED_U32: u32 = { std::mem::transmute(Foo(582)) };Meta
rustc --version --verbose:
rustc 1.70.0-nightly (7b4f48927 2023-03-12)
binary: rustc
commit-hash: 7b4f48927dce585f747a58083b45ab62b9d73a53
commit-date: 2023-03-12
host: x86_64-unknown-linux-gnu
release: 1.70.0-nightly
LLVM version: 15.0.7
Error output
Backtrace
error[E0412]: cannot find type `EContext` in this scope
--> ice_min.rs:1:27
|
1 | struct Foo(Option<Box<Fn(&EContext)>>);
| ^^^^^^^^ not found in this scope
|
help: you might be missing a type parameter
|
1 | struct Foo<EContext>(Option<Box<Fn(&EContext)>>);
| ++++++++++
warning: unnecessary braces around assigned value
--> ice_min.rs:2:29
|
2 | const TRANSMUTED_U32: u32 = { std::mem::transmute(Foo(582)) };
| ^^ ^^
|
= note: `#[warn(unused_braces)]` on by default
help: remove these braces
|
2 - const TRANSMUTED_U32: u32 = { std::mem::transmute(Foo(582)) };
2 + const TRANSMUTED_U32: u32 = std::mem::transmute(Foo(582));
|
error[E0601]: `main` function not found in crate `ice_min`
--> ice_min.rs:2:63
|
2 | const TRANSMUTED_U32: u32 = { std::mem::transmute(Foo(582)) };
| ^ consider adding a `main` function to `ice_min.rs`
warning: trait objects without an explicit `dyn` are deprecated
--> ice_min.rs:1:23
|
1 | struct Foo(Option<Box<Fn(&EContext)>>);
| ^^^^^^^^^^^^^
|
= warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
= note: `#[warn(bare_trait_objects)]` on by default
help: use `dyn`
|
1 | struct Foo(Option<Box<dyn Fn(&EContext)>>);
| +++
error: internal compiler error: compiler/rustc_middle/src/ty/layout.rs:320:26: SizeSkeleton::compute(*const (dyn for<'a> Fn(&'a [type error]) + 'static)): layout errored (the type `[type error]` has an unknown layout), yet tail `(dyn for<'a> Fn(&'a [type error]) + 'static)` is not a type parameter or a projection
thread 'rustc' panicked at 'Box<dyn Any>', /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/compiler/rustc_errors/src/lib.rs:1644:9
stack backtrace:
0: 0x7f1b5ec5d51a - std::backtrace_rs::backtrace::libunwind::trace::hf7d75cca16fd1b61
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7f1b5ec5d51a - std::backtrace_rs::backtrace::trace_unsynchronized::hf5ec95734aab509d
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f1b5ec5d51a - std::sys_common::backtrace::_print_fmt::he95113413355c8cd
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/sys_common/backtrace.rs:65:5
3: 0x7f1b5ec5d51a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h072d12f2e69ca92b
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7f1b5ecc0c5e - core::fmt::write::h1d23f16415e96af2
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/core/src/fmt/mod.rs:1232:17
5: 0x7f1b5ec50275 - std::io::Write::write_fmt::hcf1e413fde4ffcd5
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/io/mod.rs:1684:15
6: 0x7f1b5ec5d2e5 - std::sys_common::backtrace::_print::h6b2b14bedd5177e7
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/sys_common/backtrace.rs:47:5
7: 0x7f1b5ec5d2e5 - std::sys_common::backtrace::print::h09ccebfbcd382e89
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/sys_common/backtrace.rs:34:9
8: 0x7f1b5ec6005f - std::panicking::default_hook::{{closure}}::h4ee055db778febc2
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/panicking.rs:271:22
9: 0x7f1b5ec5fd9b - std::panicking::default_hook::ha74f60e3a15d95fb
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/panicking.rs:290:9
10: 0x7f1b61fdf085 - rustc_driver_impl[d355a67661263e47]::DEFAULT_HOOK::{closure#0}::{closure#0}
11: 0x7f1b5ec6089d - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h7f34603beb945e8f
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/alloc/src/boxed.rs:2002:9
12: 0x7f1b5ec6089d - std::panicking::rust_panic_with_hook::h4b5d379936d4932f
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/panicking.rs:696:13
13: 0x7f1b6254a371 - std[e52d7c968ed01318]::panicking::begin_panic::<rustc_errors[45159b7f7e36021d]::ExplicitBug>::{closure#0}
14: 0x7f1b62545aa6 - std[e52d7c968ed01318]::sys_common::backtrace::__rust_end_short_backtrace::<std[e52d7c968ed01318]::panicking::begin_panic<rustc_errors[45159b7f7e36021d]::ExplicitBug>::{closure#0}, !>
15: 0x7f1b625ce046 - std[e52d7c968ed01318]::panicking::begin_panic::<rustc_errors[45159b7f7e36021d]::ExplicitBug>
16: 0x7f1b62599e06 - std[e52d7c968ed01318]::panic::panic_any::<rustc_errors[45159b7f7e36021d]::ExplicitBug>
17: 0x7f1b62595966 - <rustc_errors[45159b7f7e36021d]::HandlerInner>::bug::<&alloc[fc860cae0dfa1ab1]::string::String>
18: 0x7f1b62595630 - <rustc_errors[45159b7f7e36021d]::Handler>::bug::<&alloc[fc860cae0dfa1ab1]::string::String>
19: 0x7f1b62581a9b - rustc_middle[a96ac5d591578447]::util::bug::opt_span_bug_fmt::<rustc_span[f8bdfaef83e46314]::span_encoding::Span>::{closure#0}
20: 0x7f1b625804fa - rustc_middle[a96ac5d591578447]::ty::context::tls::with_opt::<rustc_middle[a96ac5d591578447]::util::bug::opt_span_bug_fmt<rustc_span[f8bdfaef83e46314]::span_encoding::Span>::{closure#0}, !>::{closure#0}
21: 0x7f1b625804c6 - rustc_middle[a96ac5d591578447]::ty::context::tls::with_context_opt::<rustc_middle[a96ac5d591578447]::ty::context::tls::with_opt<rustc_middle[a96ac5d591578447]::util::bug::opt_span_bug_fmt<rustc_span[f8bdfaef83e46314]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
22: 0x7f1b625819e6 - rustc_middle[a96ac5d591578447]::util::bug::opt_span_bug_fmt::<rustc_span[f8bdfaef83e46314]::span_encoding::Span>
23: 0x7f1b605fc4b3 - rustc_middle[a96ac5d591578447]::util::bug::bug_fmt
24: 0x7f1b60fad01c - <rustc_middle[a96ac5d591578447]::ty::layout::SizeSkeleton>::compute
25: 0x7f1b62539aba - <rustc_middle[a96ac5d591578447]::ty::layout::SizeSkeleton>::compute::{closure#0}
26: 0x7f1b60fad07c - <rustc_middle[a96ac5d591578447]::ty::layout::SizeSkeleton>::compute
27: 0x7f1b62539aba - <rustc_middle[a96ac5d591578447]::ty::layout::SizeSkeleton>::compute::{closure#0}
28: 0x7f1b60fad07c - <rustc_middle[a96ac5d591578447]::ty::layout::SizeSkeleton>::compute
29: 0x7f1b62539aba - <rustc_middle[a96ac5d591578447]::ty::layout::SizeSkeleton>::compute::{closure#0}
30: 0x7f1b60fad07c - <rustc_middle[a96ac5d591578447]::ty::layout::SizeSkeleton>::compute
31: 0x7f1b62539aba - <rustc_middle[a96ac5d591578447]::ty::layout::SizeSkeleton>::compute::{closure#0}
32: 0x7f1b60fad143 - <rustc_middle[a96ac5d591578447]::ty::layout::SizeSkeleton>::compute
33: 0x7f1b62539aba - <rustc_middle[a96ac5d591578447]::ty::layout::SizeSkeleton>::compute::{closure#0}
34: 0x7f1b60fad07c - <rustc_middle[a96ac5d591578447]::ty::layout::SizeSkeleton>::compute
35: 0x7f1b6154bd55 - <rustc_hir_typeck[8554c3125ad8338a]::fn_ctxt::FnCtxt>::check_transmute
36: 0x7f1b60ecf984 - rustc_hir_typeck[8554c3125ad8338a]::typeck
37: 0x7f1b60a52536 - rustc_query_system[704b80a7bc44cd49]::query::plumbing::try_execute_query::<rustc_query_impl[217bee59c5548bf5]::queries::typeck, rustc_query_impl[217bee59c5548bf5]::plumbing::QueryCtxt>
38: 0x7f1b60a51e83 - <rustc_query_impl[217bee59c5548bf5]::Queries as rustc_middle[a96ac5d591578447]::ty::query::QueryEngine>::typeck
39: 0x7f1b5ffd9299 - rustc_hir_analysis[357075c2c3fc2a7b]::check::check::check_mod_item_types
40: 0x7f1b61614a0e - rustc_query_system[704b80a7bc44cd49]::query::plumbing::try_execute_query::<rustc_query_impl[217bee59c5548bf5]::queries::check_mod_item_types, rustc_query_impl[217bee59c5548bf5]::plumbing::QueryCtxt>
41: 0x7f1b61614593 - <rustc_query_impl[217bee59c5548bf5]::Queries as rustc_middle[a96ac5d591578447]::ty::query::QueryEngine>::check_mod_item_types
42: 0x7f1b602f7e44 - <rustc_session[7e23441c2db8ce4a]::session::Session>::time::<(), rustc_hir_analysis[357075c2c3fc2a7b]::check_crate::{closure#6}>
43: 0x7f1b602f4d88 - rustc_hir_analysis[357075c2c3fc2a7b]::check_crate
44: 0x7f1b602ead12 - rustc_interface[6bf42eb308c32713]::passes::analysis
45: 0x7f1b617f371c - rustc_query_system[704b80a7bc44cd49]::query::plumbing::try_execute_query::<rustc_query_impl[217bee59c5548bf5]::queries::analysis, rustc_query_impl[217bee59c5548bf5]::plumbing::QueryCtxt>
46: 0x7f1b617f3410 - <rustc_query_impl[217bee59c5548bf5]::Queries as rustc_middle[a96ac5d591578447]::ty::query::QueryEngine>::analysis
47: 0x7f1b616182f9 - <rustc_middle[a96ac5d591578447]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[d355a67661263e47]::run_compiler::{closure#1}::{closure#2}::{closure#4}, core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>>
48: 0x7f1b61210498 - rustc_span[f8bdfaef83e46314]::with_source_map::<core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>, rustc_interface[6bf42eb308c32713]::interface::run_compiler<core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>, rustc_driver_impl[d355a67661263e47]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
49: 0x7f1b6120770c - std[e52d7c968ed01318]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[6bf42eb308c32713]::util::run_in_thread_pool_with_globals<rustc_interface[6bf42eb308c32713]::interface::run_compiler<core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>, rustc_driver_impl[d355a67661263e47]::run_compiler::{closure#1}>::{closure#0}, core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>>
50: 0x7f1b6120713a - <<std[e52d7c968ed01318]::thread::Builder>::spawn_unchecked_<rustc_interface[6bf42eb308c32713]::util::run_in_thread_pool_with_globals<rustc_interface[6bf42eb308c32713]::interface::run_compiler<core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>, rustc_driver_impl[d355a67661263e47]::run_compiler::{closure#1}>::{closure#0}, core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>>::{closure#1} as core[125d846441ac421f]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
51: 0x7f1b5ec6a793 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hc0a50816e1eb2bba
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/alloc/src/boxed.rs:1988:9
52: 0x7f1b5ec6a793 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hb2f83fc2049033c3
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/alloc/src/boxed.rs:1988:9
53: 0x7f1b5ec6a793 - std::sys::unix::thread::Thread::new::thread_start::hce5861512f8bf7ea
at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/sys/unix/thread.rs:108:17
54: 0x7f1b5e9d4ff2 - start_thread
55: 0x7f1b5ea57bfc - clone3
56: 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 1.70.0-nightly (7b4f48927 2023-03-12) running on x86_64-unknown-linux-gnu
query stack during panic:
#0 [typeck] type-checking `TRANSMUTED_U32`
#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 3 previous errors; 2 warnings emitted
Some errors have detailed explanations: E0412, E0601.
For more information about an error, try `rustc --explain E0412`.
Nilstrieb commented
searched nightlies: from nightly-2021-01-01 to nightly-2023-03-12
regressed nightly: nightly-2023-01-05
searched commit range: c757267...659e169
regressed commit: ddad1e1
bisected with cargo-bisect-rustc v0.6.5
Host triple: x86_64-unknown-linux-gnu
Reproduce with:
cargo bisect-rustc 2021-01-01 --end 2023-03-12 --regress ice --access githubNote that this requires edition 2015/2018, as edition 2021 hard errors on the bare trait object before ever getting to layout code.
compiler-errors commented
@rustbot claim