Closed
Description
Found in the crater runs of #72969
git clone https://github.com/manuthambi/big_enum_set
cd big_enum_set
git checkout e0512c1032831cbc1efe6fd309f5743974780259
cargo test
Meta
rustc --version --verbose:
rustc 1.46.0-nightly (feb3536eb 2020-06-09)
binary: rustc
commit-hash: feb3536eba10c2e4585d066629598f03d5ddc7c6
commit-date: 2020-06-09
host: x86_64-unknown-linux-gnu
release: 1.46.0-nightly
LLVM version: 10.0
Error output
error: internal compiler error: src/librustc_mir_build/hair/pattern/const_to_pat.rs:137: use of a constant whose type is a projection inside a pattern
thread 'rustc' panicked at 'Box<Any>', src/librustc_errors/lib.rs:907:9
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/blob/master/CONTRIBUTING.md#bug-reports
note: rustc 1.46.0-nightly (feb3536eb 2020-06-09) running on x86_64-unknown-linux-gnu
note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C incremental -C target-cpu=native
note: some of the compiler flags provided by cargo are hidden
error: aborting due to previous error
error: could not compile `big_enum_set`.
To learn more, run the command again with --verbose
Backtrace
Compiling big_enum_set v0.2.0 (/tmp/big_enum_set/big_enum_set)
error: internal compiler error: src/librustc_mir_build/hair/pattern/const_to_pat.rs:137: use of a constant whose type is a projection inside a pattern
thread 'rustc' panicked at 'Box<Any>', src/librustc_errors/lib.rs:907:9
stack backtrace:
0: backtrace::backtrace::libunwind::trace
at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
1: backtrace::backtrace::trace_unsynchronized
at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
2: std::sys_common::backtrace::_print_fmt
at src/libstd/sys_common/backtrace.rs:78
3: <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt
at src/libstd/sys_common/backtrace.rs:59
4: core::fmt::write
at src/libcore/fmt/mod.rs:1076
5: std::io::Write::write_fmt
at src/libstd/io/mod.rs:1537
6: std::sys_common::backtrace::_print
at src/libstd/sys_common/backtrace.rs:62
7: std::sys_common::backtrace::print
at src/libstd/sys_common/backtrace.rs:49
8: std::panicking::default_hook::{{closure}}
at src/libstd/panicking.rs:198
9: std::panicking::default_hook
at src/libstd/panicking.rs:218
10: rustc_driver::report_ice
11: <alloc::boxed::Box<F> as core::ops::function::Fn<A>>::call
at /home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/liballoc/boxed.rs:1090
12: proc_macro::bridge::client::<impl proc_macro::bridge::Bridge>::enter::{{closure}}::{{closure}}
at /home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/libproc_macro/bridge/client.rs:318
13: std::panicking::rust_panic_with_hook
at src/libstd/panicking.rs:481
14: std::panicking::begin_panic
15: rustc_errors::HandlerInner::bug
16: rustc_errors::Handler::bug
17: rustc_middle::util::bug::opt_span_bug_fmt::{{closure}}
18: rustc_middle::ty::context::tls::with_opt::{{closure}}
19: rustc_middle::ty::context::tls::with_opt
20: rustc_middle::util::bug::opt_span_bug_fmt
21: rustc_middle::util::bug::bug_fmt
22: rustc_mir_build::hair::pattern::const_to_pat::ConstToPat::to_pat
23: rustc_middle::ty::context::GlobalCtxt::enter_local
24: rustc_mir_build::hair::pattern::PatCtxt::lower_path
25: rustc_mir_build::hair::pattern::PatCtxt::lower_pattern
26: rustc_mir_build::hair::pattern::check_match::MatchVisitor::lower_pattern
27: <core::iter::adapters::Map<I,F> as core::iter::traits::iterator::Iterator>::fold
28: <rustc_mir_build::hair::pattern::check_match::MatchVisitor as rustc_hir::intravisit::Visitor>::visit_expr
29: <rustc_mir_build::hair::pattern::check_match::MatchVisitor as rustc_hir::intravisit::Visitor>::visit_expr
30: rustc_mir_build::hair::pattern::check_match::check_match
31: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::check_match>::compute
32: rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps
33: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
34: rustc_data_structures::stack::ensure_sufficient_stack
35: rustc_query_system::query::plumbing::get_query_impl
36: rustc_query_system::query::plumbing::ensure_query_impl
37: rustc_session::utils::<impl rustc_session::session::Session>::time
38: rustc_session::utils::<impl rustc_session::session::Session>::time
39: rustc_interface::passes::analysis
40: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::analysis>::compute
41: rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps
42: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
43: rustc_query_system::query::plumbing::get_query_impl
44: rustc_middle::ty::context::tls::enter_global
45: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
46: rustc_span::with_source_map
47: rustc_interface::interface::run_compiler_in_existing_thread_pool
48: scoped_tls::ScopedKey<T>::set
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports
note: rustc 1.46.0-nightly (feb3536eb 2020-06-09) running on x86_64-unknown-linux-gnu
note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C incremental -C target-cpu=native
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
#0 [check_match] match-checking `small_enum::match_const_test`
#1 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to previous error
error: could not compile `big_enum_set`.
To learn more, run the command again with --verbose.