ICE "Or-pattern should have been expanded earlier on" · Issue #69875 · rust-lang/rust (original) (raw)

Code

This code is reduced from issue-54538-unused-parens-lint.rs
#![feature(or_patterns)]
fn main() { if let 0 | (1 | 2) = 0 {} }
Error output

warning: unnecessary parentheses around pattern
 --> ./ui/lint/issue-54538-unused-parens-lint.rs:3:16
  |
3 |     if let 0 | (1 | 2) = 0 {}
  |                ^^^^^^^ help: remove these parentheses
  |
  = note: `#[warn(unused_parens)]` on by default

error: internal compiler error: src/librustc_mir_build/hair/pattern/_match.rs:1884: Or-pattern should have been expanded earlier on.

thread 'rustc' panicked at 'Box<Any>', src/librustc_errors/lib.rs:875:9
stack backtrace:
   0: backtrace::backtrace::libunwind::trace
             at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.44/src/backtrace/libunwind.rs:86
   1: backtrace::backtrace::trace_unsynchronized
             at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.44/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:1063
   5: std::io::Write::write_fmt
             at src/libstd/io/mod.rs:1428
   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:204
   9: std::panicking::default_hook
             at src/libstd/panicking.rs:224
  10: clippy_driver::report_clippy_ice
  11: std::panicking::rust_panic_with_hook
             at src/libstd/panicking.rs:474
  12: std::panicking::begin_panic
  13: rustc_errors::HandlerInner::bug
  14: rustc_errors::Handler::bug
  15: rustc::util:🐛:opt_span_bug_fmt::{{closure}}
  16: rustc::ty::context::tls::with_opt::{{closure}}
  17: rustc::ty::context::tls::with_opt
  18: rustc::util:🐛:opt_span_bug_fmt
  19: rustc::util:🐛:bug_fmt
  20: rustc_mir_build::hair::pattern::_match::pat_constructor
  21: <alloc::vec::Vec<T> as alloc::vec::SpecExtend<T,I>>::from_iter
  22: rustc_mir_build::hair::pattern::_match::is_useful
  23: rustc_mir_build::hair::pattern::check_match::check_arms
  24: rustc_mir_build::hair::pattern::_match::MatchCheckCtxt::create_and_enter
  25: <rustc_mir_build::hair::pattern::check_match::MatchVisitor as rustc_hir::intravisit::Visitor>::visit_expr
  26: <rustc_mir_build::hair::pattern::check_match::MatchVisitor as rustc_hir::intravisit::Visitor>::visit_expr
  27: rustc_mir_build::hair::pattern::check_match::check_match
  28: rustc::ty::query::__query_compute::check_match
  29: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::check_match>::compute
  30: rustc::dep_graph::graph::DepGraph::with_task_impl
  31: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
  32: rustc::ty::<impl rustc::ty::context::TyCtxt>::par_body_owners
  33: std::panicking::try::do_call
  34: __rust_maybe_catch_panic
             at src/libpanic_unwind/lib.rs:86
  35: rustc_session::utils::<impl rustc_session::session::Session>::time
  36: rustc_interface::passes::analysis
  37: rustc::ty::query::__query_compute::analysis
  38: rustc::dep_graph::graph::DepGraph::with_task_impl
  39: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
  40: rustc::ty::context::tls::enter_global
  41: rustc_interface::interface::run_compiler_in_existing_thread_pool
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-clippy/issues/new

note: Clippy version: clippy 0.0.212 (329923e 2020-03-04)

query stack during panic:
#0 [check_match] processing `main`
#1 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to previous error
ICE "Or-pattern should have been expanded earlier on" · Issue #69875 · rust-lang/rust (original) (raw)

Code

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Error output
