Closed
Description
Code
reduced from ./src/test/ui/issues/issue-28561.rs
#[derive(Clone)]
struct Fn<A, B> {
f02: fn(A, B)
}
fn main() {}Meta
rustc --version --verbose:
rustc 1.49.0-nightly (0d33ab7af 2020-10-30)
binary: rustc
commit-hash: 0d33ab7af4aebe786410b4c10367eb6ddf13af0b
commit-date: 2020-10-30
host: x86_64-unknown-linux-gnu
release: 1.49.0-nightly
Error output
rustc ./src/test/ui/issues/issue-28561.rs -Zmir-opt-level=2 --emit=mir
error: internal compiler error: compiler/rustc_middle/src/ty/subst.rs:528:17: type parameter `B/#1` (B/1) out of range when substituting, substs=[fn(A, B)]
thread 'rustc' panicked at 'Box<Any>', /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/compiler/rustc_errors/src/lib.rs:891:9
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 1.49.0-nightly (0d33ab7af 2020-10-30) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z mir-opt-level=2
query stack during panic:
#0 [optimized_mir] optimizing MIR for `<Fn<A, B> as std::clone::Clone>::clone`
end of query stack
error: aborting due to previous error
Backtrace
error: internal compiler error: compiler/rustc_middle/src/ty/subst.rs:528:17: type parameter `B/#1` (B/1) out of range when substituting, substs=[fn(A, B)]
thread 'rustc' panicked at 'Box<Any>', /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/compiler/rustc_errors/src/lib.rs:891:9
stack backtrace:
0: 0x7f21197865f0 - std::backtrace_rs::backtrace::libunwind::trace::h448c56741b6011d3
at /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5
1: 0x7f21197865f0 - std::backtrace_rs::backtrace::trace_unsynchronized::h881b9d30a8a89a0c
at /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f21197865f0 - std::sys_common::backtrace::_print_fmt::h720a2f61f75b9f58
at /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/library/std/src/sys_common/backtrace.rs:67:5
3: 0x7f21197865f0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8d62bbfda6d5c836
at /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/library/std/src/sys_common/backtrace.rs:46:22
4: 0x7f21197f652c - core::fmt::write::h1857a60b204f1b6a
at /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/library/core/src/fmt/mod.rs:1078:17
5: 0x7f2119778252 - std::io::Write::write_fmt::h16a9fe7680ac245c
at /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/library/std/src/io/mod.rs:1518:15
6: 0x7f211978b5a5 - std::sys_common::backtrace::_print::h9ba51a6db618de7d
at /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/library/std/src/sys_common/backtrace.rs:49:5
7: 0x7f211978b5a5 - std::sys_common::backtrace::print::h5f20e41c85e91716
at /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/library/std/src/sys_common/backtrace.rs:36:9
8: 0x7f211978b5a5 - std::panicking::default_hook::{{closure}}::h8d48653392f3b04c
at /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/library/std/src/panicking.rs:208:50
9: 0x7f211978b248 - std::panicking::default_hook::hb3948d1f74b6ff4c
at /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/library/std/src/panicking.rs:227:9
10: 0x7f211a0554b8 - rustc_driver::report_ice::h1ddbc5609a6e1f37
11: 0x7f211978bea6 - std::panicking::rust_panic_with_hook::h55d23fef0ad751bc
at /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/library/std/src/panicking.rs:597:17
12: 0x7f211cdb27fd - std::panicking::begin_panic::{{closure}}::hd947eabc42434d7e
13: 0x7f211cdb2676 - std::sys_common::backtrace::__rust_end_short_backtrace::ha48eb0455bf6d0a2
14: 0x7f211cdb2756 - std::panicking::begin_panic::h673793876dd52a84
15: 0x7f211cda38c5 - rustc_errors::HandlerInner::span_bug::h96d4d1f33fe11a81
16: 0x7f211cda46c0 - rustc_errors::Handler::span_bug::hd4174033c6f30272
17: 0x7f211cabfa64 - rustc_middle::util::bug::opt_span_bug_fmt::{{closure}}::hb4ddd0d3902006f3
18: 0x7f211cab956b - rustc_middle::ty::context::tls::with_opt::{{closure}}::ha7f81bc36cab3c9f
19: 0x7f211cab8f22 - rustc_middle::ty::context::tls::with_opt::hf0c2c2aff96e53ba
20: 0x7f211cabf969 - rustc_middle::util::bug::opt_span_bug_fmt::hc7cbb029c2646db9
21: 0x7f211cabf923 - rustc_middle::util::bug::span_bug_fmt::h3bf186beb4ce6b92
22: 0x7f211cab701e - <rustc_middle::ty::subst::SubstFolder as rustc_middle::ty::fold::TypeFolder>::fold_ty::h5265163b4487a38a
23: 0x7f211cc41852 - <smallvec::SmallVec<A> as core::iter::traits::collect::Extend<<A as smallvec::Array>::Item>>::extend::h5dc0ab4942b60e5f
24: 0x7f211cd92602 - rustc_middle::ty::structural_impls::fold_list::h6987b80cfa543859
25: 0x7f211cbe0ee5 - rustc_middle::ty::structural_impls::<impl rustc_middle::ty::fold::TypeFoldable for &rustc_middle::ty::TyS>::super_fold_with::hcd50cd058363ef2d
26: 0x7f211cab6e80 - <rustc_middle::ty::subst::SubstFolder as rustc_middle::ty::fold::TypeFolder>::fold_ty::h5265163b4487a38a
27: 0x7f211cbe0e95 - rustc_middle::ty::structural_impls::<impl rustc_middle::ty::fold::TypeFoldable for &rustc_middle::ty::TyS>::super_fold_with::hcd50cd058363ef2d
28: 0x7f211cab6e80 - <rustc_middle::ty::subst::SubstFolder as rustc_middle::ty::fold::TypeFolder>::fold_ty::h5265163b4487a38a
29: 0x7f211b67e213 - rustc_middle::ty::fold::TypeFoldable::fold_with::hcfc0bcab5eee2a4b
30: 0x7f211b5ea834 - rustc_middle::ty::normalize_erasing_regions::<impl rustc_middle::ty::context::TyCtxt>::subst_and_normalize_erasing_regions::h50c1d5daecb56882
31: 0x7f211b393dff - rustc_mir::transform::inline::Inliner::run_pass::h160d0d273d881e9b
32: 0x7f211b39281a - <rustc_mir::transform::inline::Inline as rustc_mir::transform::MirPass>::run_pass::h616a912953f0ee0e
33: 0x7f211b84987d - rustc_mir::transform::run_passes::h211303d522a12d5d
34: 0x7f211b84b9d3 - rustc_mir::transform::run_optimization_passes::he68a023a63197fe9
35: 0x7f211b84bc53 - rustc_mir::transform::optimized_mir::h9877cf2dcd224775
36: 0x7f211b322a52 - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::optimized_mir>::compute::hc1fb28a214043661
37: 0x7f211b6bf644 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::hdcbd220a91a0fa7d
38: 0x7f211b6cf561 - rustc_data_structures::stack::ensure_sufficient_stack::h8cd2d9586b9bff8c
39: 0x7f211b4bcbbf - rustc_query_system::query::plumbing::get_query_impl::h426160ef8626bfd8
40: 0x7f211b3a2597 - rustc_mir::util::pretty::write_mir_pretty::ha9d3fce2e2d6083a
41: 0x7f211b590331 - rustc_mir::transform::dump_mir::emit_mir::he6266d14022fc931
42: 0x7f211a2a1c54 - rustc_interface::passes::QueryContext::enter::h9b049407f643d454
43: 0x7f211a2c1933 - rustc_interface::queries::Queries::ongoing_codegen::h90e1d78cee1f0a3b
44: 0x7f211a0723a0 - rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter::h25b522245624a405
45: 0x7f211a035a2f - rustc_span::with_source_map::h7455fffe3cd153a4
46: 0x7f211a06d4f1 - scoped_tls::ScopedKey<T>::set::h8ae8151712a551fd
47: 0x7f211a077c25 - std::sys_common::backtrace::__rust_begin_short_backtrace::h26de371bc27662fc
48: 0x7f2119fdf648 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h80d1a8eb7971174b
49: 0x7f211979aeaa - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h9e7afb7a0a438236
at /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/library/alloc/src/boxed.rs:1307:9
50: 0x7f211979aeaa - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h70c646c4271337a1
at /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/library/alloc/src/boxed.rs:1307:9
51: 0x7f211979aeaa - std::sys::unix::thread::Thread::new::thread_start::h35d2b8d36f210d02
at /rustc/0d33ab7af4aebe786410b4c10367eb6ddf13af0b/library/std/src/sys/unix/thread.rs:89:17
52: 0x7f21196963e9 - start_thread
53: 0x7f21195b3293 - __GI___clone
54: 0x0 - <unknown>
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 1.49.0-nightly (0d33ab7af 2020-10-30) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z mir-opt-level=2
query stack during panic:
#0 [optimized_mir] optimizing MIR for `<Fn<A, B> as std::clone::Clone>::clone`
end of query stack
error: aborting due to previous error