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error: internal compiler error: librustc_mir/hair/pattern/mod.rs:514: tuple struct pattern not applied to an ADT #50582

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vegard opened this issue May 9, 2018 · 2 comments · Fixed by #58921
Closed

error: internal compiler error: librustc_mir/hair/pattern/mod.rs:514: tuple struct pattern not applied to an ADT #50582

vegard opened this issue May 9, 2018 · 2 comments · Fixed by #58921
Labels
C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@vegard
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vegard commented May 9, 2018 •
edited by kennytm
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Input:

fn main() {
    Vec::<[(); 1 + for x in 0..1 {}]>::new();
}

Output:

$ rustc -Z external-macro-backtrace -
error[E0277]: cannot add `()` to `{integer}`
 --> <anon>:2:18
  |
2 |     Vec::<[(); 1 + for x in 0..1 {}]>::new();
  |                  ^ no implementation for `{integer} + ()`
  |
  = help: the trait `std::ops::Add<()>` is not implemented for `{integer}`

error: internal compiler error: librustc_mir/hair/pattern/mod.rs:514: tuple struct pattern not applied to an ADT
 --> <anon>:2:24
  |
2 |     Vec::<[(); 1 + for x in 0..1 {}]>::new();
  |                        ^

thread 'main' panicked at 'Box<Any>', librustc_errors/lib.rs:499:9
stack backtrace:
...
  13: rustc::session::span_bug_fmt
             at /home/vegard/rust/src/librustc/session/mod.rs:1267
  14: rustc_mir::hair::pattern::PatternContext::lower_pattern
             at librustc_mir/hair/pattern/mod.rs:514
             at librustc_mir/hair/pattern/mod.rs:344
  15: rustc_mir::hair::pattern::check_match::MatchVisitor::check_match::{{closure}}
             at librustc_mir/hair/pattern/check_match.rs:202
             at /home/vegard/rust/src/libcore/ops/function.rs:271
             at /home/vegard/rust/src/libcore/option.rs:404
             at /home/vegard/rust/src/libcore/iter/mod.rs:1347
             at /home/vegard/rust/src/liballoc/vec.rs:1883
             at /home/vegard/rust/src/liballoc/vec.rs:1866
             at /home/vegard/rust/src/liballoc/vec.rs:1752
             at /home/vegard/rust/src/libcore/iter/iterator.rs:1375
             at librustc_mir/hair/pattern/check_match.rs:198
             at /home/vegard/rust/src/libcore/ops/function.rs:271
             at /home/vegard/rust/src/libcore/option.rs:404
             at /home/vegard/rust/src/libcore/iter/mod.rs:1347
             at /home/vegard/rust/src/liballoc/vec.rs:1883
             at /home/vegard/rust/src/liballoc/vec.rs:1866
             at /home/vegard/rust/src/liballoc/vec.rs:1752
             at /home/vegard/rust/src/libcore/iter/iterator.rs:1375
             at librustc_mir/hair/pattern/check_match.rs:197
...
Complete output 
$ rustc -Z external-macro-backtrace -
error[E0277]: cannot add `()` to `{integer}`
 --> <anon>:2:18
  |
2 |     Vec::<[(); 1 + for x in 0..1 {}]>::new();
  |                  ^ no implementation for `{integer} + ()`
  |
  = help: the trait `std::ops::Add<()>` is not implemented for `{integer}`

error: internal compiler error: librustc_mir/hair/pattern/mod.rs:514: tuple struct pattern not applied to an ADT
 --> <anon>:2:24
  |
2 |     Vec::<[(); 1 + for x in 0..1 {}]>::new();
  |                        ^

thread 'main' panicked at 'Box<Any>', librustc_errors/lib.rs:499:9
stack backtrace:
   0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
             at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::_print
             at libstd/sys_common/backtrace.rs:71
   2: std::panicking::default_hook::{{closure}}
             at libstd/sys_common/backtrace.rs:59
             at libstd/panicking.rs:211
   3: std::panicking::default_hook
             at libstd/panicking.rs:227
   4: rustc::util::common::panic_hook
             at librustc/util/common.rs:54
   5: std::panicking::rust_panic_with_hook
             at libstd/panicking.rs:467
   6: std::panicking::begin_panic
             at /home/vegard/rust/src/libstd/panicking.rs:397
   7: rustc_errors::Handler::span_bug
             at /home/vegard/rust/src/<panic macros>:3
   8: rustc::session::opt_span_bug_fmt::{{closure}}
             at /home/vegard/rust/src/librustc/session/mod.rs:1279
   9: rustc::ty::context::tls::with_opt::{{closure}}
             at /home/vegard/rust/src/librustc/ty/context.rs:1943
  10: rustc::ty::context::tls::with_context_opt
             at /home/vegard/rust/src/librustc/ty/context.rs:1880
  11: rustc::ty::context::tls::with_opt
             at /home/vegard/rust/src/librustc/ty/context.rs:1943
  12: rustc::session::opt_span_bug_fmt
             at /home/vegard/rust/src/librustc/session/mod.rs:1276
  13: rustc::session::span_bug_fmt
             at /home/vegard/rust/src/librustc/session/mod.rs:1267
  14: rustc_mir::hair::pattern::PatternContext::lower_pattern
             at librustc_mir/hair/pattern/mod.rs:514
             at librustc_mir/hair/pattern/mod.rs:344
  15: rustc_mir::hair::pattern::check_match::MatchVisitor::check_match::{{closure}}
             at librustc_mir/hair/pattern/check_match.rs:202
             at /home/vegard/rust/src/libcore/ops/function.rs:271
             at /home/vegard/rust/src/libcore/option.rs:404
             at /home/vegard/rust/src/libcore/iter/mod.rs:1347
             at /home/vegard/rust/src/liballoc/vec.rs:1883
             at /home/vegard/rust/src/liballoc/vec.rs:1866
             at /home/vegard/rust/src/liballoc/vec.rs:1752
             at /home/vegard/rust/src/libcore/iter/iterator.rs:1375
             at librustc_mir/hair/pattern/check_match.rs:198
             at /home/vegard/rust/src/libcore/ops/function.rs:271
             at /home/vegard/rust/src/libcore/option.rs:404
             at /home/vegard/rust/src/libcore/iter/mod.rs:1347
             at /home/vegard/rust/src/liballoc/vec.rs:1883
             at /home/vegard/rust/src/liballoc/vec.rs:1866
             at /home/vegard/rust/src/liballoc/vec.rs:1752
             at /home/vegard/rust/src/libcore/iter/iterator.rs:1375
             at librustc_mir/hair/pattern/check_match.rs:197
  16: <rustc_mir::hair::pattern::check_match::MatchVisitor<'a, 'tcx> as rustc::hir::intravisit::Visitor<'tcx>>::visit_expr
             at librustc_mir/hair/pattern/_match.rs:166
             at librustc_mir/hair/pattern/check_match.rs:194
             at librustc_mir/hair/pattern/check_match.rs:102
  17: <rustc_mir::hair::pattern::check_match::MatchVisitor<'a, 'tcx> as rustc::hir::intravisit::Visitor<'tcx>>::visit_expr
             at /home/vegard/rust/src/librustc/hir/intravisit.rs:935
             at /home/vegard/rust/src/librustc/hir/intravisit.rs:264
             at /home/vegard/rust/src/<walk_list macros>:2
             at /home/vegard/rust/src/librustc/hir/intravisit.rs:261
             at /home/vegard/rust/src/librustc/hir/intravisit.rs:1005
             at librustc_mir/hair/pattern/check_match.rs:98
  18: <rustc_mir::hair::pattern::check_match::MatchVisitor<'a, 'tcx> as rustc::hir::intravisit::Visitor<'tcx>>::visit_expr
             at /home/vegard/rust/src/librustc/hir/intravisit.rs:267
             at /home/vegard/rust/src/<walk_list macros>:2
             at librustc_mir/hair/pattern/check_match.rs:98
  19: <rustc_mir::hair::pattern::check_match::MatchVisitor<'a, 'tcx> as rustc::hir::intravisit::Visitor<'tcx>>::visit_local
             at /home/vegard/rust/src/<walk_list macros>:2
             at librustc_mir/hair/pattern/check_match.rs:109
  20: <rustc_mir::hair::pattern::check_match::MatchVisitor<'a, 'tcx> as rustc::hir::intravisit::Visitor<'tcx>>::visit_expr
             at /home/vegard/rust/src/librustc/hir/intravisit.rs:942
             at /home/vegard/rust/src/librustc/hir/intravisit.rs:273
             at /home/vegard/rust/src/librustc/hir/intravisit.rs:930
             at /home/vegard/rust/src/librustc/hir/intravisit.rs:264
             at /home/vegard/rust/src/<walk_list macros>:2
             at /home/vegard/rust/src/librustc/hir/intravisit.rs:261
             at /home/vegard/rust/src/librustc/hir/intravisit.rs:1018
             at librustc_mir/hair/pattern/check_match.rs:98
  21: <rustc_mir::hair::pattern::check_match::MatchVisitor<'a, 'tcx> as rustc::hir::intravisit::Visitor<'tcx>>::visit_expr
             at /home/vegard/rust/src/libsyntax/ptr.rs:0
  22: <rustc_mir::hair::pattern::check_match::MatchVisitor<'a, 'tcx> as rustc::hir::intravisit::Visitor<'tcx>>::visit_body
             at /home/vegard/rust/src/librustc/hir/intravisit.rs:400
             at librustc_mir/hair/pattern/check_match.rs:121
  23: rustc_mir::hair::pattern::check_match::check_match
             at librustc_mir/hair/pattern/check_match.rs:70
             at /home/vegard/rust/src/librustc/session/mod.rs:318
             at librustc_mir/hair/pattern/check_match.rs:69
  24: rustc::dep_graph::graph::DepGraph::with_task_impl
             at librustc/ty/maps/plumbing.rs:723
             at librustc/dep_graph/graph.rs:343
  25: rustc::ty::maps::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job
             at librustc/dep_graph/graph.rs:209
             at librustc/ty/maps/plumbing.rs:530
             at librustc/ty/maps/plumbing.rs:200
             at librustc/ty/context.rs:1844
             at librustc/ty/context.rs:1787
             at librustc/ty/context.rs:1843
             at librustc/ty/maps/plumbing.rs:199
             at librustc/ty/context.rs:1905
             at librustc/ty/context.rs:1889
             at librustc/ty/context.rs:1880
             at librustc/ty/context.rs:1889
             at librustc/ty/context.rs:1900
             at librustc/ty/maps/plumbing.rs:189
             at librustc/ty/maps/plumbing.rs:523
  26: rustc::ty::maps::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query
             at librustc/ty/maps/plumbing.rs:372
             at librustc/ty/maps/plumbing.rs:599
             at librustc/ty/maps/plumbing.rs:606
  27: rustc_mir::interpret::const_eval::const_eval_provider
             at librustc_mir/interpret/const_eval.rs:451
  28: rustc::dep_graph::graph::DepGraph::with_task_impl
             at librustc/ty/maps/plumbing.rs:723
             at librustc/dep_graph/graph.rs:343
  29: rustc::ty::maps::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job
             at librustc/dep_graph/graph.rs:209
             at librustc/ty/maps/plumbing.rs:530
             at librustc/ty/maps/plumbing.rs:200
             at librustc/ty/context.rs:1844
             at librustc/ty/context.rs:1787
             at librustc/ty/context.rs:1843
             at librustc/ty/maps/plumbing.rs:199
             at librustc/ty/context.rs:1905
             at librustc/ty/context.rs:1889
             at librustc/ty/context.rs:1880
             at librustc/ty/context.rs:1889
             at librustc/ty/context.rs:1900
             at librustc/ty/maps/plumbing.rs:189
             at librustc/ty/maps/plumbing.rs:523
  30: rustc::ty::maps::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::try_get_query
             at librustc/ty/maps/plumbing.rs:372
             at librustc/ty/maps/plumbing.rs:599
  31: <rustc::traits::project::AssociatedTypeNormalizer<'a, 'b, 'gcx, 'tcx> as rustc::ty::fold::TypeFolder<'gcx, 'tcx>>::fold_const
             at librustc/ty/maps/plumbing.rs:606
             at librustc/ty/maps/plumbing.rs:776
             at librustc/ty/maps/plumbing.rs:769
             at librustc/traits/project.rs:436
  32: <rustc::traits::project::AssociatedTypeNormalizer<'a, 'b, 'gcx, 'tcx> as rustc::ty::fold::TypeFolder<'gcx, 'tcx>>::fold_ty
             at librustc/ty/structural_impls.rs:1176
             at librustc/ty/structural_impls.rs:857
             at librustc/traits/project.rs:346
  33: rustc_typeck::check::Inherited::normalize_associated_types_in
             at /home/vegard/rust/src/librustc/ty/structural_impls.rs:890
             at /home/vegard/rust/src/librustc/traits/project.rs:324
             at /home/vegard/rust/src/librustc/traits/project.rs:283
             at /home/vegard/rust/src/librustc/traits/project.rs:267
             at /home/vegard/rust/src/librustc/infer/mod.rs:1358
             at librustc_typeck/check/mod.rs:677
  34: <rustc_typeck::check::FnCtxt<'a, 'gcx, 'tcx> as rustc_typeck::astconv::AstConv<'gcx, 'tcx>>::normalize_ty
             at librustc_typeck/check/mod.rs:2075
             at librustc_typeck/check/mod.rs:1776
  35: <rustc_typeck::astconv::AstConv<'gcx, 'tcx> + 'o>::ast_ty_to_ty
             at librustc_typeck/astconv.rs:1095
  36: <rustc_typeck::astconv::AstConv<'gcx, 'tcx> + 'o>::create_substs_for_ast_path::{{closure}}
             at librustc_typeck/astconv.rs:261
  37: rustc::ty::subst::<impl rustc::ty::Slice<rustc::ty::subst::Kind<'tcx>>>::fill_item
             at /home/vegard/rust/src/librustc/ty/subst.rs:260
             at /home/vegard/rust/src/librustc/ty/subst.rs:235
  38: <rustc_typeck::astconv::AstConv<'gcx, 'tcx> + 'o>::create_substs_for_ast_path
             at /home/vegard/rust/src/librustc/ty/subst.rs:203
             at librustc_typeck/astconv.rs:243
  39: <rustc_typeck::astconv::AstConv<'gcx, 'tcx> + 'o>::ast_path_substs_for_ty
             at librustc_typeck/astconv.rs:176
             at /home/vegard/rust/src/librustc/hir/mod.rs:366
             at librustc_typeck/astconv.rs:175
  40: <rustc_typeck::astconv::AstConv<'gcx, 'tcx> + 'o>::def_to_ty
             at librustc_typeck/astconv.rs:555
             at librustc_typeck/astconv.rs:964
  41: <rustc_typeck::astconv::AstConv<'gcx, 'tcx> + 'o>::ast_ty_to_ty
             at librustc_typeck/astconv.rs:1074
  42: rustc_typeck::check::FnCtxt::resolve_ty_and_def_ufcs
             at librustc_typeck/check/mod.rs:2119
             at librustc_typeck/check/mod.rs:4183
  43: rustc_typeck::check::FnCtxt::check_expr_kind
             at librustc_typeck/check/mod.rs:3698
  44: rustc_typeck::check::FnCtxt::check_expr_with_expectation_and_needs
             at librustc_typeck/check/mod.rs:3530
  45: rustc_typeck::check::FnCtxt::check_expr_kind
             at librustc_typeck/check/mod.rs:2864
             at librustc_typeck/check/mod.rs:2868
             at librustc_typeck/check/callee.rs:51
             at librustc_typeck/check/mod.rs:3916
  46: rustc_typeck::check::FnCtxt::check_expr_with_expectation_and_needs
             at librustc_typeck/check/mod.rs:3530
  47: rustc_typeck::check::FnCtxt::check_block_with_expected::{{closure}}
             at librustc_typeck/check/mod.rs:2864
             at librustc_typeck/check/mod.rs:2868
             at librustc_typeck/check/mod.rs:4296
             at librustc_typeck/check/mod.rs:4361
  48: rustc_typeck::check::FnCtxt::check_block_with_expected
             at librustc_typeck/check/mod.rs:5070
             at librustc_typeck/check/mod.rs:4359
  49: rustc_typeck::check::FnCtxt::check_expr_kind
             at librustc_typeck/check/mod.rs:3913
  50: rustc_typeck::check::FnCtxt::check_expr_with_expectation_and_needs
             at librustc_typeck/check/mod.rs:3530
  51: rustc_typeck::check::FnCtxt::check_return_expr
             at librustc_typeck/check/mod.rs:2864
             at librustc_typeck/check/mod.rs:2858
             at librustc_typeck/check/mod.rs:2996
  52: rustc_typeck::check::check_fn
             at librustc_typeck/check/mod.rs:1081
  53: rustc_typeck::check::typeck_tables_of::{{closure}}
             at librustc_typeck/check/mod.rs:871
  54: rustc_typeck::check::typeck_tables_of
             at librustc_typeck/check/mod.rs:617
             at /home/vegard/rust/src/librustc/infer/mod.rs:453
             at /home/vegard/rust/src/librustc/ty/context.rs:1578
             at /home/vegard/rust/src/librustc/ty/context.rs:1844
             at /home/vegard/rust/src/librustc/ty/context.rs:1787
             at /home/vegard/rust/src/librustc/ty/context.rs:1843
             at /home/vegard/rust/src/librustc/ty/context.rs:1577
             at /home/vegard/rust/src/librustc/ty/context.rs:1905
             at /home/vegard/rust/src/librustc/ty/context.rs:1889
             at /home/vegard/rust/src/librustc/ty/context.rs:1880
             at /home/vegard/rust/src/librustc/ty/context.rs:1889
             at /home/vegard/rust/src/librustc/ty/context.rs:1900
             at /home/vegard/rust/src/librustc/ty/context.rs:1570
             at /home/vegard/rust/src/librustc/infer/mod.rs:453
             at librustc_typeck/check/mod.rs:617
             at librustc_typeck/check/mod.rs:855
  55: rustc::dep_graph::graph::DepGraph::with_task_impl
             at librustc/ty/maps/plumbing.rs:723
             at librustc/dep_graph/graph.rs:343
  56: rustc::ty::maps::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job
             at librustc/dep_graph/graph.rs:209
             at librustc/ty/maps/plumbing.rs:530
             at librustc/ty/maps/plumbing.rs:200
             at librustc/ty/context.rs:1844
             at librustc/ty/context.rs:1787
             at librustc/ty/context.rs:1843
             at librustc/ty/maps/plumbing.rs:199
             at librustc/ty/context.rs:1905
             at librustc/ty/context.rs:1889
             at librustc/ty/context.rs:1880
             at librustc/ty/context.rs:1889
             at librustc/ty/context.rs:1900
             at librustc/ty/maps/plumbing.rs:189
             at librustc/ty/maps/plumbing.rs:523
  57: rustc::ty::maps::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query
             at librustc/ty/maps/plumbing.rs:372
             at librustc/ty/maps/plumbing.rs:599
             at librustc/ty/maps/plumbing.rs:606
  58: rustc::ty::maps::<impl rustc::ty::maps::queries::typeck_tables_of<'tcx>>::ensure
             at librustc/ty/maps/plumbing.rs:574
             at librustc/ty/maps/plumbing.rs:740
  59: rustc_typeck::check::typeck_item_bodies
             at librustc_typeck/check/mod.rs:715
             at /home/vegard/rust/src/librustc/session/mod.rs:318
             at librustc_typeck/check/mod.rs:713
  60: rustc::dep_graph::graph::DepGraph::with_task_impl
             at librustc/ty/maps/plumbing.rs:723
             at librustc/dep_graph/graph.rs:343
  61: rustc::ty::maps::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job
             at librustc/dep_graph/graph.rs:209
             at librustc/ty/maps/plumbing.rs:530
             at librustc/ty/maps/plumbing.rs:200
             at librustc/ty/context.rs:1844
             at librustc/ty/context.rs:1787
             at librustc/ty/context.rs:1843
             at librustc/ty/maps/plumbing.rs:199
             at librustc/ty/context.rs:1905
             at librustc/ty/context.rs:1889
             at librustc/ty/context.rs:1880
             at librustc/ty/context.rs:1889
             at librustc/ty/context.rs:1900
             at librustc/ty/maps/plumbing.rs:189
             at librustc/ty/maps/plumbing.rs:523
  62: rustc::ty::maps::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query
             at librustc/ty/maps/plumbing.rs:372
             at librustc/ty/maps/plumbing.rs:599
             at librustc/ty/maps/plumbing.rs:606
  63: rustc_typeck::check_crate
             at librustc_typeck/check/mod.rs:706
             at librustc_typeck/lib.rs:344
             at /home/vegard/rust/src/librustc/util/common.rs:166
             at /home/vegard/rust/src/librustc/util/common.rs:160
             at librustc_typeck/lib.rs:344
  64: rustc::ty::context::TyCtxt::create_and_enter
             at librustc_driver/driver.rs:1121
             at /home/vegard/rust/src/librustc/ty/context.rs:1867
             at /home/vegard/rust/src/librustc/ty/context.rs:1844
             at /home/vegard/rust/src/librustc/ty/context.rs:1787
             at /home/vegard/rust/src/librustc/ty/context.rs:1843
             at /home/vegard/rust/src/librustc/ty/context.rs:1866
             at /home/vegard/rust/src/librustc/ty/context.rs:1833
             at /home/vegard/rust/src/libstd/thread/local.rs:294
             at /home/vegard/rust/src/libstd/thread/local.rs:248
             at /home/vegard/rust/src/librustc/ty/context.rs:1825
             at /home/vegard/rust/src/libstd/thread/local.rs:294
             at /home/vegard/rust/src/libstd/thread/local.rs:248
             at /home/vegard/rust/src/librustc/ty/context.rs:1817
             at /home/vegard/rust/src/librustc/ty/context.rs:1855
             at /home/vegard/rust/src/librustc/ty/context.rs:1299
  65: rustc_driver::driver::compile_input
             at librustc_driver/driver.rs:1095
             at librustc_driver/driver.rs:231
  66: rustc_driver::run_compiler
             at librustc_driver/lib.rs:540
             at librustc_driver/lib.rs:457
             at /home/vegard/.cargo/registry/src/github.com-1ecc6299db9ec823/scoped-tls-0.1.1/src/lib.rs:155
             at /home/vegard/rust/src/libsyntax/lib.rs:97
             at /home/vegard/.cargo/registry/src/github.com-1ecc6299db9ec823/scoped-tls-0.1.1/src/lib.rs:155
             at /home/vegard/rust/src/libsyntax/lib.rs:96
             at librustc_driver/lib.rs:456
  67: rustc_driver::monitor::{{closure}}
             at librustc_driver/lib.rs:1684
             at librustc_driver/lib.rs:174
             at librustc_driver/lib.rs:1598
  68: __rust_maybe_catch_panic
             at libpanic_unwind/lib.rs:105
  69: rustc_driver::run
             at /home/vegard/rust/src/libstd/panicking.rs:289
             at /home/vegard/rust/src/libstd/panic.rs:374
             at librustc_driver/lib.rs:1530
             at librustc_driver/lib.rs:1597
             at librustc_driver/lib.rs:173
  70: rustc_driver::main
             at librustc_driver/lib.rs:1677
  71: std::rt::lang_start::{{closure}}
             at /home/vegard/rust/src/libstd/rt.rs:74
  72: std::panicking::try::do_call
             at libstd/rt.rs:59
             at libstd/panicking.rs:310
  73: __rust_maybe_catch_panic
             at libpanic_unwind/lib.rs:105
  74: std::rt::lang_start_internal
             at libstd/panicking.rs:289
             at libstd/panic.rs:374
             at libstd/rt.rs:58
  75: main
  76: __libc_start_main
  77: _start
query stack during panic:
#0 [check_match] processing `main::{{initializer}}`
#1 [const_eval] const-evaluating `main::{{initializer}}`
#2 [typeck_tables_of] processing `main`
#3 [typeck_item_bodies] type-checking all item bodies
end of query stack
error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0277`.

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 1.27.0-dev running on x86_64-unknown-linux-gnu

note: compiler flags: -Z external-macro-backtrace

I'm on commit c166b03.
@pietroalbini pietroalbini added I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. C-bug Category: This is a bug. labels May 9, 2018
@frewsxcv frewsxcv mentioned this issue May 9, 2018
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@cuviper
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cuviper commented Aug 16, 2018

This still ICEs on stable 1.28.0, but it looks fine on 1.29.0-beta.4 and 1.30.0-nightly (d5a448b3f 2018-08-13). I don't know if anyone would care to track down what fixed it, otherwise we can close.

@yodaldevoid
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I had some time and decided to perform a git bisect. I looks like this was fixed with fe5710a, and considering the name of the commit, this makes sense. Heck, it even adds a test with a very similar input from issue #50585!

@cuviper cuviper mentioned this issue Mar 4, 2019
Merged
cuviper added a commit to cuviper/rust that referenced this issue Mar 4, 2019
@cuviper
Add an explicit test for issue rust-lang#50582
842014d 
This code no longer ICEs, and @yodaldevoid found that it was fixed by
commit fe5710a. While that added a similar test, we can explicitly test
this reproducer too.

Closes rust-lang#50582.
pietroalbini added a commit to pietroalbini/rust that referenced this issue Mar 8, 2019
@pietroalbini
Rollup merge of rust-lang#58921 - cuviper:issue-50582, r=varkor
416edc1 
Add an explicit test for issue rust-lang#50582

This code no longer ICEs, and @yodaldevoid found that it was fixed by
commit fe5710a. While that added a similar test, we can explicitly test
this reproducer too.

Closes rust-lang#50582.
@pietroalbini pietroalbini mentioned this issue Mar 8, 2019
Merged
bors added a commit that referenced this issue Mar 9, 2019
@bors
Auto merge of #59012 - pietroalbini:rollup, r=pietroalbini
c9f8304 
Rollup of 24 pull requests

Successful merges:

 - #58080 (Add FreeBSD armv6 and armv7 targets)
 - #58204 (On return type `impl Trait` for block with no expr point at last semi)
 - #58269 (Add librustc and libsyntax to rust-src distribution.)
 - #58369 (Make the Entry API of HashMap<K, V> Sync and Send)
 - #58861 (Expand where negative supertrait specific error is shown)
 - #58877 (Suggest removal of `&` when borrowing macro and appropriate)
 - #58883 (Suggest appropriate code for unused field when destructuring pattern)
 - #58891 (Remove stray ` in the docs for the FromIterator implementation for Option)
 - #58893 (race condition in thread local storage example)
 - #58906 (Monomorphize generator field types for debuginfo)
 - #58911 (Regression test for #58435.)
 - #58912 (Regression test for #58813)
 - #58916 (Fix release note problems noticed after merging.)
 - #58918 (Regression test added for an async ICE.)
 - #58921 (Add an explicit test for issue #50582)
 - #58926 (Make the lifetime parameters of tcx consistent.)
 - #58931 (Elide invalid method receiver error when it contains TyErr)
 - #58940 (Remove JSBackend from config.toml)
 - #58950 (Add self to mailmap)
 - #58961 (On incorrect cfg literal/identifier, point at the right span)
 - #58963 (libstd: implement Error::source for io::Error)
 - #58970 (delay_span_bug in wfcheck's ty.lift_to_tcx unwrap)
 - #58984 (Teach `-Z treat-err-as-bug` to take a number of errors to emit)
 - #59007 (Add a test for invalid const arguments)

Failed merges:

 - #58959 (Add release notes for PR #56243)

r? @ghost
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Add an explicit test for issue #50582 cuviper/rust
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@vegard @cuviper @yodaldevoid @pietroalbini