Closed
Description
Code
typenum="1.12.0"
generic-array="0.14.4"
use generic_array::GenericArray;
use typenum::Unsigned;
union Foo<N: Unsigned> {
data: GenericArray<u8, N>
}Meta
This bug exists both on current nightly and stable. Nightly output:
rustc --version --verbose:
rustc 1.52.0-nightly
Error output
Compiling playground v0.0.1 (/playground)
error: internal compiler error: compiler/rustc_traits/src/normalize_erasing_regions.rs:43:32: could not fully normalize `<N as generic_array::ArrayLength<u8>>::ArrayType`
thread 'rustc' panicked at 'Box<Any>', compiler/rustc_errors/src/lib.rs:958:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
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 1.50.0 (cb75ad5db 2021-02-10) running on x86_64-unknown-linux-gnu
note: compiler flags: -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2 --crate-type lib
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
#0 [normalize_generic_arg_after_erasing_regions] normalizing `<N as generic_array::ArrayLength<u8>>::ArrayType`
#1 [needs_drop_raw] computing whether `generic_array::GenericArray<u8, N>` needs drop
end of query stack
error: aborting due to previous error
Backtrace
error: internal compiler error: compiler/rustc_traits/src/normalize_erasing_regions.rs:43:32: could not fully normalize `<N as generic_array::ArrayLength<u8>>::ArrayType`
thread 'rustc' panicked at 'Box<Any>', /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/std/src/panic.rs:59:5
stack backtrace:
0: 0x7fb3e8b1cc70 - std::backtrace_rs::backtrace::libunwind::trace::hb4de9797f80b7b8c
at /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
1: 0x7fb3e8b1cc70 - std::backtrace_rs::backtrace::trace_unsynchronized::h59566d0bd20efff7
at /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7fb3e8b1cc70 - std::sys_common::backtrace::_print_fmt::hcfa5ce6be50275d4
at /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/std/src/sys_common/backtrace.rs:67:5
3: 0x7fb3e8b1cc70 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hd8c307a38b9bab04
at /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/std/src/sys_common/backtrace.rs:46:22
4: 0x7fb3e8b8deec - core::fmt::write::h3868db8542c90941
at /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/core/src/fmt/mod.rs:1096:17
5: 0x7fb3e8b0fba2 - std::io::Write::write_fmt::hab90295d5a0f197d
at /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/std/src/io/mod.rs:1568:15
6: 0x7fb3e8b20b55 - std::sys_common::backtrace::_print::h19224910b8700cf1
at /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/std/src/sys_common/backtrace.rs:49:5
7: 0x7fb3e8b20b55 - std::sys_common::backtrace::print::h25dedfa68c5fb84a
at /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/std/src/sys_common/backtrace.rs:36:9
8: 0x7fb3e8b20b55 - std::panicking::default_hook::{{closure}}::h12c5765653a72a42
at /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/std/src/panicking.rs:208:50
9: 0x7fb3e8b206b3 - std::panicking::default_hook::he65cee71c4209f0c
at /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/std/src/panicking.rs:225:9
10: 0x7fb3e937b52b - rustc_driver::report_ice::h9bfcf5769c15fbf2
11: 0x7fb3e8b21456 - std::panicking::rust_panic_with_hook::h01a674d863fe0d8a
at /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/std/src/panicking.rs:595:17
12: 0x7fb3eab5337e - std::panicking::begin_panic::{{closure}}::h04d9d59beaf7438f
13: 0x7fb3eab530b9 - std::sys_common::backtrace::__rust_end_short_backtrace::h91912ecacddbde4e
14: 0x7fb3eab53322 - std::panicking::begin_panic::h3001af3848957078
15: 0x7fb3eab46070 - std::panic::panic_any::h4f4426de976e6adf
16: 0x7fb3eab4947a - rustc_errors::HandlerInner::bug::hdf11185f92e2a22a
17: 0x7fb3eab48f53 - rustc_errors::Handler::bug::h2dfda4f443e5c9b7
18: 0x7fb3ea848aaa - rustc_middle::ty::context::tls::with_opt::h931a04da690f236d
19: 0x7fb3ec15fab0 - rustc_middle::util::bug::opt_span_bug_fmt::h550b33bd70d0f311
20: 0x7fb3ea84af26 - rustc_middle::util::bug::bug_fmt::h36f36510cd9d6fb0
21: 0x7fb3ead4b19f - rustc_infer::infer::InferCtxtBuilder::enter::hf940139bf6bfbc27
22: 0x7fb3ead5420a - rustc_traits::normalize_erasing_regions::normalize_generic_arg_after_erasing_regions::h80e6571a4ee85ad8
23: 0x7fb3ec1f50a8 - rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps::ha53fe413c90dab6e
24: 0x7fb3eb61722d - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::h22198f06d62ce937
25: 0x7fb3eb57c065 - rustc_data_structures::stack::ensure_sufficient_stack::h661218e91a1b54e9
26: 0x7fb3eb56e65e - rustc_query_system::query::plumbing::force_query_with_job::h3c8146f2d1f28d43
27: 0x7fb3eb553b58 - rustc_query_system::query::plumbing::get_query_impl::ha6c6abc347fafc39
28: 0x7fb3eb59844b - <rustc_middle::ty::normalize_erasing_regions::NormalizeAfterErasingRegionsFolder as rustc_middle::ty::fold::TypeFolder>::fold_ty::hddf16ed3359dbd34
29: 0x7fb3ead33aa3 - rustc_ty_utils::needs_drop::needs_drop_raw::hf8e0eae2daf84614
30: 0x7fb3e9ae1a16 - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::needs_drop_raw>::compute::h82c0a5ac3f555896
31: 0x7fb3e9b09c10 - rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps::hf7df7e26f965f6be
32: 0x7fb3e9af8efd - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::haae861225e7e67f6
33: 0x7fb3e9afcf6c - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task::h1207d5165f8894a7
34: 0x7fb3e9b2c015 - rustc_data_structures::stack::ensure_sufficient_stack::h5929c556f360f9c2
35: 0x7fb3e9ae79db - rustc_query_system::query::plumbing::force_query_with_job::ha8da147a11595916
36: 0x7fb3e9ae25dc - rustc_query_system::query::plumbing::get_query_impl::h4b5993c042058290
37: 0x7fb3e9af0e2f - rustc_query_system::query::plumbing::get_query::h3ab4a250ccb3bbf1
38: 0x7fb3eafe525f - <rustc_passes::stability::Checker as rustc_hir::intravisit::Visitor>::visit_item::h2bf5d0cf54fef87b
39: 0x7fb3eafb2162 - rustc_middle::hir::map::Map::visit_item_likes_in_module::h2a479328b3cfc618
40: 0x7fb3ebbb74e2 - rustc_passes::stability::check_mod_unstable_api_usage::h384a7e0e614a05bd
41: 0x7fb3eb6eb7fc - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::check_mod_unstable_api_usage>::compute::h538c349dade82501
42: 0x7fb3eb6f6207 - rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps::hb18acbc8e33ea959
43: 0x7fb3eb6d7f0d - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::ha27bbe1fb2160242
44: 0x7fb3eb705005 - rustc_data_structures::stack::ensure_sufficient_stack::h98d3bece40371b3e
45: 0x7fb3eb6f3761 - rustc_query_system::query::plumbing::force_query_with_job::h3480dbaedc8e4d04
46: 0x7fb3eb6f1a98 - rustc_query_system::query::plumbing::get_query_impl::hc861c865b8ac055a
47: 0x7fb3eb6f2d47 - rustc_query_system::query::plumbing::ensure_query_impl::h6c30c930f4936591
48: 0x7fb3eb6cedbc - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hf18fa3d3907c9ecd
49: 0x7fb3eb6f6aac - rustc_session::utils::<impl rustc_session::session::Session>::time::h23248c12f89aea1d
50: 0x7fb3eb708d91 - rustc_interface::passes::analysis::heddb9cef62da4ab1
51: 0x7fb3eb6864c9 - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::analysis>::compute::hc584fab50c0e9742
52: 0x7fb3e9337afa - rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps::he189719f47fb03a4
53: 0x7fb3eb698964 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::h90cdb9d4b5390542
54: 0x7fb3eb6a7855 - rustc_data_structures::stack::ensure_sufficient_stack::hc03964f1cadb8cd3
55: 0x7fb3eb6871f1 - rustc_query_system::query::plumbing::force_query_with_job::h085fb2f93a800461
56: 0x7fb3eb686801 - rustc_query_system::query::plumbing::get_query_impl::hc18a830d288c39e4
57: 0x7fb3eb69faaa - rustc_interface::passes::QueryContext::enter::hf896adfd99e9040f
58: 0x7fb3eb6a68e4 - rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter::h2ac7000621882a7f
59: 0x7fb3eb69f391 - rustc_span::with_source_map::h9c33ff8439fe9783
60: 0x7fb3eb6a60b3 - scoped_tls::ScopedKey<T>::set::h0eb8893a0191dbc1
61: 0x7fb3eb6a7ac8 - std::sys_common::backtrace::__rust_begin_short_backtrace::hccc56e59b0e3233c
62: 0x7fb3eb68619a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h09f6484b7e2514ef
63: 0x7fb3e8b31dda - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h321523073ee11258
at /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/alloc/src/boxed.rs:1548:9
64: 0x7fb3e8b31dda - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf0e85e12c83b99b3
at /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/alloc/src/boxed.rs:1548:9
65: 0x7fb3e8b31dda - std::sys::unix::thread::Thread::new::thread_start::hba22c7961aa0e2f8
at /rustc/3f5aee2d5241139d808f4fdece0026603489afd1/library/std/src/sys/unix/thread.rs:71:17
66: 0x7fb3e8a4d609 - start_thread
67: 0x7fb3e8961293 - clone
68: 0x0 - <unknown>