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[debug assertion] thread 'rustc' panicked at 'assertion failed: !value.has_escaping_bound_vars()' #72410

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dwrensha opened this issue May 21, 2020 · 2 comments · Fixed by #72714
Closed

[debug assertion] thread 'rustc' panicked at 'assertion failed: !value.has_escaping_bound_vars()' #72410

dwrensha opened this issue May 21, 2020 · 2 comments · Fixed by #72714
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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@dwrensha
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Using a rustc built from commit 0aa6751 with debug assertions enabled (debug=true in config.toml), I'm seeing an internal compiler error on the following input (found by fuzz-rustc):

pub trait Foo {
    fn map() where Self: Sized, for<'a> &'a mut [u8] : ;
}
$ RUST_BACKTRACE=1 build/x86_64-unknown-linux-gnu/stage1/bin/rustc ~/Desktop/main.rs
error[E0601]: `main` function not found in crate `main`
 --> /home/dwrensha/Desktop/main.rs:1:1
  |
1 | / pub trait Foo {
2 | |     fn map() where Self: Sized, for<'a> &'a mut [u8] : ;
3 | | }
  | |_^ consider adding a `main` function to `/home/dwrensha/Desktop/main.rs`

thread 'rustc' panicked at 'assertion failed: !value.has_escaping_bound_vars()', /home/dwrensha/src/rust/src/libstd/macros.rs:13:23
stack backtrace:
   0: backtrace::backtrace::libunwind::trace
             at /home/dwrensha/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
   1: backtrace::backtrace::trace_unsynchronized
             at /home/dwrensha/.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:1069
   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: <alloc::boxed::Box<F> as core::ops::function::Fn<A>>::call
             at ./src/liballoc/boxed.rs:1071
  11: rustc_driver::report_ice
             at src/librustc_driver/lib.rs:1167
  12: std::panicking::rust_panic_with_hook
             at src/libstd/panicking.rs:490
  13: std::panicking::begin_panic
             at ./src/libstd/panicking.rs:410
  14: rustc_middle::ty::sty::Binder<T>::dummy
             at ./src/libstd/macros.rs:13
  15: rustc_typeck::collect::explicit_predicates_of
             at src/librustc_typeck/collect.rs:1902
  16: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::explicit_predicates_of>::compute
             at ./src/librustc_middle/ty/query/plumbing.rs:362
  17: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
             at ./src/librustc_query_system/dep_graph/graph.rs:303
  18: rustc_query_system::query::plumbing::force_query_with_job::{{closure}}::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:0
  19: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}::{{closure}}::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:72
  20: stacker::maybe_grow
             at /home/dwrensha/.cargo/registry/src/github.com-1ecc6299db9ec823/stacker-0.1.9/src/lib.rs:52
  21: rustc_data_structures::stack::ensure_sufficient_stack
             at ./src/librustc_data_structures/stack.rs:16
  22: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:72
  23: rustc_middle::ty::context::tls::enter_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1679
  24: rustc_middle::ty::context::tls::set_tlv
             at ./src/librustc_middle/ty/context.rs:1663
  25: rustc_middle::ty::context::tls::enter_context
             at ./src/librustc_middle/ty/context.rs:1679
  26: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:71
  27: rustc_middle::ty::context::tls::with_related_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1767
  28: rustc_middle::ty::context::tls::with_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1751
  29: rustc_middle::ty::context::tls::with_context_opt
             at ./src/librustc_middle/ty/context.rs:1740
  30: rustc_middle::ty::context::tls::with_context
             at ./src/librustc_middle/ty/context.rs:1751
  31: rustc_middle::ty::context::tls::with_related_context
             at ./src/librustc_middle/ty/context.rs:1764
  32: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query
             at ./src/librustc_middle/ty/query/plumbing.rs:60
  33: rustc_query_system::query::plumbing::force_query_with_job::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:589
  34: rustc_query_system::query::plumbing::with_diagnostics
             at ./src/librustc_query_system/query/plumbing.rs:296
  35: rustc_query_system::query::plumbing::force_query_with_job
             at ./src/librustc_query_system/query/plumbing.rs:588
  36: rustc_query_system::query::plumbing::try_execute_query
             at ./src/librustc_query_system/query/plumbing.rs:415
  37: rustc_query_system::query::plumbing::get_query_impl::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:639
  38: <rustc_query_system::query::caches::DefaultCache<K,V> as rustc_query_system::query::caches::QueryCache>::lookup
             at ./src/librustc_query_system/query/caches.rs:111
  39: rustc_query_system::query::plumbing::try_get_cached
             at ./src/librustc_query_system/query/plumbing.rs:369
  40: rustc_query_system::query::plumbing::get_query_impl
             at ./src/librustc_query_system/query/plumbing.rs:631
  41: rustc_query_system::query::plumbing::get_query
             at ./src/librustc_query_system/query/plumbing.rs:731
  42: rustc_middle::ty::query::TyCtxtAt::explicit_predicates_of
             at ./src/librustc_middle/ty/query/plumbing.rs:472
  43: rustc_middle::ty::query::<impl rustc_middle::ty::context::TyCtxt>::explicit_predicates_of
             at ./src/librustc_middle/ty/query/plumbing.rs:433
  44: rustc_typeck::collect::predicates_defined_on
             at src/librustc_typeck/collect.rs:1616
  45: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::predicates_defined_on>::compute
             at ./src/librustc_middle/ty/query/plumbing.rs:362
  46: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
             at ./src/librustc_query_system/dep_graph/graph.rs:303
  47: rustc_query_system::query::plumbing::force_query_with_job::{{closure}}::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:0
  48: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}::{{closure}}::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:72
  49: stacker::maybe_grow
             at /home/dwrensha/.cargo/registry/src/github.com-1ecc6299db9ec823/stacker-0.1.9/src/lib.rs:52
  50: rustc_data_structures::stack::ensure_sufficient_stack
             at ./src/librustc_data_structures/stack.rs:16
  51: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:72
  52: rustc_middle::ty::context::tls::enter_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1679
  53: rustc_middle::ty::context::tls::set_tlv
             at ./src/librustc_middle/ty/context.rs:1663
  54: rustc_middle::ty::context::tls::enter_context
             at ./src/librustc_middle/ty/context.rs:1679
  55: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:71
  56: rustc_middle::ty::context::tls::with_related_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1767
  57: rustc_middle::ty::context::tls::with_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1751
  58: rustc_middle::ty::context::tls::with_context_opt
             at ./src/librustc_middle/ty/context.rs:1740
  59: rustc_middle::ty::context::tls::with_context
             at ./src/librustc_middle/ty/context.rs:1751
  60: rustc_middle::ty::context::tls::with_related_context
             at ./src/librustc_middle/ty/context.rs:1764
  61: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query
             at ./src/librustc_middle/ty/query/plumbing.rs:60
  62: rustc_query_system::query::plumbing::force_query_with_job::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:589
  63: rustc_query_system::query::plumbing::with_diagnostics
             at ./src/librustc_query_system/query/plumbing.rs:296
  64: rustc_query_system::query::plumbing::force_query_with_job
             at ./src/librustc_query_system/query/plumbing.rs:588
  65: rustc_query_system::query::plumbing::try_execute_query
             at ./src/librustc_query_system/query/plumbing.rs:415
  66: rustc_query_system::query::plumbing::get_query_impl::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:639
  67: <rustc_query_system::query::caches::DefaultCache<K,V> as rustc_query_system::query::caches::QueryCache>::lookup
             at ./src/librustc_query_system/query/caches.rs:111
  68: rustc_query_system::query::plumbing::try_get_cached
             at ./src/librustc_query_system/query/plumbing.rs:369
  69: rustc_query_system::query::plumbing::get_query_impl
             at ./src/librustc_query_system/query/plumbing.rs:631
  70: rustc_query_system::query::plumbing::get_query
             at ./src/librustc_query_system/query/plumbing.rs:731
  71: rustc_middle::ty::query::TyCtxtAt::predicates_defined_on
             at ./src/librustc_middle/ty/query/plumbing.rs:472
  72: rustc_middle::ty::query::<impl rustc_middle::ty::context::TyCtxt>::predicates_defined_on
             at ./src/librustc_middle/ty/query/plumbing.rs:433
  73: rustc_typeck::collect::predicates_of
             at src/librustc_typeck/collect.rs:1640
  74: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::predicates_of>::compute
             at ./src/librustc_middle/ty/query/plumbing.rs:362
  75: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
             at ./src/librustc_query_system/dep_graph/graph.rs:303
  76: rustc_query_system::query::plumbing::force_query_with_job::{{closure}}::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:0
  77: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}::{{closure}}::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:72
  78: stacker::maybe_grow
             at /home/dwrensha/.cargo/registry/src/github.com-1ecc6299db9ec823/stacker-0.1.9/src/lib.rs:52
  79: rustc_data_structures::stack::ensure_sufficient_stack
             at ./src/librustc_data_structures/stack.rs:16
  80: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:72
  81: rustc_middle::ty::context::tls::enter_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1679
  82: rustc_middle::ty::context::tls::set_tlv
             at ./src/librustc_middle/ty/context.rs:1663
  83: rustc_middle::ty::context::tls::enter_context
             at ./src/librustc_middle/ty/context.rs:1679
  84: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:71
  85: rustc_middle::ty::context::tls::with_related_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1767
  86: rustc_middle::ty::context::tls::with_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1751
  87: rustc_middle::ty::context::tls::with_context_opt
             at ./src/librustc_middle/ty/context.rs:1740
  88: rustc_middle::ty::context::tls::with_context
             at ./src/librustc_middle/ty/context.rs:1751
  89: rustc_middle::ty::context::tls::with_related_context
             at ./src/librustc_middle/ty/context.rs:1764
  90: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query
             at ./src/librustc_middle/ty/query/plumbing.rs:60
  91: rustc_query_system::query::plumbing::force_query_with_job::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:589
  92: rustc_query_system::query::plumbing::with_diagnostics
             at ./src/librustc_query_system/query/plumbing.rs:296
  93: rustc_query_system::query::plumbing::force_query_with_job
             at ./src/librustc_query_system/query/plumbing.rs:588
  94: rustc_query_system::query::plumbing::try_execute_query
             at ./src/librustc_query_system/query/plumbing.rs:415
  95: rustc_query_system::query::plumbing::get_query_impl::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:639
  96: <rustc_query_system::query::caches::DefaultCache<K,V> as rustc_query_system::query::caches::QueryCache>::lookup
             at ./src/librustc_query_system/query/caches.rs:111
  97: rustc_query_system::query::plumbing::try_get_cached
             at ./src/librustc_query_system/query/plumbing.rs:369
  98: rustc_query_system::query::plumbing::get_query_impl
             at ./src/librustc_query_system/query/plumbing.rs:631
  99: rustc_query_system::query::plumbing::ensure_query_impl
             at ./src/librustc_query_system/query/plumbing.rs:0
 100: rustc_query_system::query::plumbing::ensure_query
             at ./src/librustc_query_system/query/plumbing.rs:741
 101: rustc_middle::ty::query::TyCtxtEnsure::predicates_of
             at ./src/librustc_middle/ty/query/plumbing.rs:389
 102: rustc_typeck::collect::convert_trait_item
             at src/librustc_typeck/collect.rs:730
 103: <rustc_typeck::collect::CollectItemTypesVisitor as rustc_hir::intravisit::Visitor>::visit_trait_item
             at src/librustc_typeck/collect.rs:232
 104: <rustc_hir::intravisit::DeepVisitor<V> as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_trait_item
             at ./src/librustc_hir/intravisit.rs:61
 105: rustc_middle::hir::map::Map::visit_item_likes_in_module
             at ./src/librustc_middle/hir/map/mod.rs:495
 106: rustc_typeck::collect::collect_mod_item_types
             at src/librustc_typeck/collect.rs:58
 107: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::collect_mod_item_types>::compute
             at ./src/librustc_middle/ty/query/plumbing.rs:362
 108: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
             at ./src/librustc_query_system/dep_graph/graph.rs:303
 109: rustc_query_system::query::plumbing::force_query_with_job::{{closure}}::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:0
 110: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}::{{closure}}::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:72
 111: stacker::maybe_grow
             at /home/dwrensha/.cargo/registry/src/github.com-1ecc6299db9ec823/stacker-0.1.9/src/lib.rs:52
 112: rustc_data_structures::stack::ensure_sufficient_stack
             at ./src/librustc_data_structures/stack.rs:16
 113: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:72
 114: rustc_middle::ty::context::tls::enter_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1679
 115: rustc_middle::ty::context::tls::set_tlv
             at ./src/librustc_middle/ty/context.rs:1663
 116: rustc_middle::ty::context::tls::enter_context
             at ./src/librustc_middle/ty/context.rs:1679
 117: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:71
 118: rustc_middle::ty::context::tls::with_related_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1767
 119: rustc_middle::ty::context::tls::with_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1751
 120: rustc_middle::ty::context::tls::with_context_opt
             at ./src/librustc_middle/ty/context.rs:1740
 121: rustc_middle::ty::context::tls::with_context
             at ./src/librustc_middle/ty/context.rs:1751
 122: rustc_middle::ty::context::tls::with_related_context
             at ./src/librustc_middle/ty/context.rs:1764
 123: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query
             at ./src/librustc_middle/ty/query/plumbing.rs:60
 124: rustc_query_system::query::plumbing::force_query_with_job::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:589
 125: rustc_query_system::query::plumbing::with_diagnostics
             at ./src/librustc_query_system/query/plumbing.rs:296
 126: rustc_query_system::query::plumbing::force_query_with_job
             at ./src/librustc_query_system/query/plumbing.rs:588
 127: rustc_query_system::query::plumbing::try_execute_query
             at ./src/librustc_query_system/query/plumbing.rs:415
 128: rustc_query_system::query::plumbing::get_query_impl::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:639
 129: <rustc_query_system::query::caches::DefaultCache<K,V> as rustc_query_system::query::caches::QueryCache>::lookup
             at ./src/librustc_query_system/query/caches.rs:111
 130: rustc_query_system::query::plumbing::try_get_cached
             at ./src/librustc_query_system/query/plumbing.rs:369
 131: rustc_query_system::query::plumbing::get_query_impl
             at ./src/librustc_query_system/query/plumbing.rs:631
 132: rustc_query_system::query::plumbing::ensure_query_impl
             at ./src/librustc_query_system/query/plumbing.rs:679
 133: rustc_query_system::query::plumbing::ensure_query
             at ./src/librustc_query_system/query/plumbing.rs:741
 134: rustc_middle::ty::query::TyCtxtEnsure::collect_mod_item_types
             at ./src/librustc_middle/ty/query/plumbing.rs:389
 135: rustc_typeck::check_crate::{{closure}}::{{closure}}
             at src/librustc_typeck/lib.rs:330
 136: rustc_data_structures::profiling::VerboseTimingGuard::run
             at ./src/librustc_data_structures/profiling.rs:573
 137: rustc_session::utils::<impl rustc_session::session::Session>::time
             at ./src/librustc_session/utils.rs:9
 138: rustc_typeck::check_crate::{{closure}}
             at src/librustc_typeck/lib.rs:328
 139: rustc_session::session::Session::track_errors
             at ./src/librustc_session/session.rs:353
 140: rustc_typeck::check_crate
             at src/librustc_typeck/lib.rs:327
 141: rustc_interface::passes::analysis
             at src/librustc_interface/passes.rs:807
 142: rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::analysis>::compute
             at ./src/librustc_middle/ty/query/plumbing.rs:362
 143: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
             at ./src/librustc_query_system/dep_graph/graph.rs:303
 144: rustc_query_system::query::plumbing::force_query_with_job::{{closure}}::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:0
 145: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}::{{closure}}::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:72
 146: stacker::maybe_grow
             at /home/dwrensha/.cargo/registry/src/github.com-1ecc6299db9ec823/stacker-0.1.9/src/lib.rs:52
 147: rustc_data_structures::stack::ensure_sufficient_stack
             at ./src/librustc_data_structures/stack.rs:16
 148: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:72
 149: rustc_middle::ty::context::tls::enter_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1679
 150: rustc_middle::ty::context::tls::set_tlv
             at ./src/librustc_middle/ty/context.rs:1663
 151: rustc_middle::ty::context::tls::enter_context
             at ./src/librustc_middle/ty/context.rs:1679
 152: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query::{{closure}}
             at ./src/librustc_middle/ty/query/plumbing.rs:71
 153: rustc_middle::ty::context::tls::with_related_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1767
 154: rustc_middle::ty::context::tls::with_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1751
 155: rustc_middle::ty::context::tls::with_context_opt
             at ./src/librustc_middle/ty/context.rs:1740
 156: rustc_middle::ty::context::tls::with_context
             at ./src/librustc_middle/ty/context.rs:1751
 157: rustc_middle::ty::context::tls::with_related_context
             at ./src/librustc_middle/ty/context.rs:1764
 158: rustc_middle::ty::query::plumbing::<impl rustc_query_system::query::QueryContext for rustc_middle::ty::context::TyCtxt>::start_query
             at ./src/librustc_middle/ty/query/plumbing.rs:60
 159: rustc_query_system::query::plumbing::force_query_with_job::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:589
 160: rustc_query_system::query::plumbing::with_diagnostics
             at ./src/librustc_query_system/query/plumbing.rs:296
 161: rustc_query_system::query::plumbing::force_query_with_job
             at ./src/librustc_query_system/query/plumbing.rs:588
 162: rustc_query_system::query::plumbing::try_execute_query
             at ./src/librustc_query_system/query/plumbing.rs:415
 163: rustc_query_system::query::plumbing::get_query_impl::{{closure}}
             at ./src/librustc_query_system/query/plumbing.rs:639
 164: <rustc_query_system::query::caches::DefaultCache<K,V> as rustc_query_system::query::caches::QueryCache>::lookup
             at ./src/librustc_query_system/query/caches.rs:111
 165: rustc_query_system::query::plumbing::try_get_cached
             at ./src/librustc_query_system/query/plumbing.rs:369
 166: rustc_query_system::query::plumbing::get_query_impl
             at ./src/librustc_query_system/query/plumbing.rs:631
 167: rustc_query_system::query::plumbing::get_query
             at ./src/librustc_query_system/query/plumbing.rs:731
 168: rustc_middle::ty::query::TyCtxtAt::analysis
             at ./src/librustc_middle/ty/query/plumbing.rs:472
 169: rustc_middle::ty::query::<impl rustc_middle::ty::context::TyCtxt>::analysis
             at ./src/librustc_middle/ty/query/plumbing.rs:433
 170: rustc_driver::run_compiler::{{closure}}::{{closure}}::{{closure}}
             at src/librustc_driver/lib.rs:383
 171: rustc_middle::ty::context::tls::enter_global::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1702
 172: rustc_middle::ty::context::tls::enter_context::{{closure}}
             at ./src/librustc_middle/ty/context.rs:1679
 173: rustc_middle::ty::context::tls::set_tlv
             at ./src/librustc_middle/ty/context.rs:1663
 174: rustc_middle::ty::context::tls::enter_context
             at ./src/librustc_middle/ty/context.rs:1679
 175: rustc_middle::ty::context::tls::enter_global
             at ./src/librustc_middle/ty/context.rs:1702
 176: rustc_interface::passes::QueryContext::enter
             at ./src/librustc_interface/passes.rs:708
 177: rustc_driver::run_compiler::{{closure}}::{{closure}}
             at src/librustc_driver/lib.rs:383
 178: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
             at ./src/librustc_interface/queries.rs:385
 179: rustc_driver::run_compiler::{{closure}}
             at src/librustc_driver/lib.rs:283
 180: rustc_interface::interface::run_compiler_in_existing_thread_pool
             at ./src/librustc_interface/interface.rs:199
 181: rustc_interface::interface::run_compiler::{{closure}}
             at ./src/librustc_interface/interface.rs:213
 182: rustc_interface::util::spawn_thread_pool::{{closure}}::{{closure}}::{{closure}}
             at ./src/librustc_interface/util.rs:149
 183: scoped_tls::ScopedKey<T>::set
             at /home/dwrensha/.cargo/registry/src/github.com-1ecc6299db9ec823/scoped-tls-1.0.0/src/lib.rs:137
 184: rustc_interface::util::spawn_thread_pool::{{closure}}::{{closure}}
             at ./src/librustc_interface/util.rs:145
 185: scoped_tls::ScopedKey<T>::set
             at /home/dwrensha/.cargo/registry/src/github.com-1ecc6299db9ec823/scoped-tls-1.0.0/src/lib.rs:137
 186: rustc_ast::attr::with_globals::{{closure}}
             at ./src/librustc_ast/attr/mod.rs:44
 187: scoped_tls::ScopedKey<T>::set
             at /home/dwrensha/.cargo/registry/src/github.com-1ecc6299db9ec823/scoped-tls-1.0.0/src/lib.rs:137
 188: rustc_ast::attr::with_globals
             at ./src/librustc_ast/attr/mod.rs:44
 189: rustc_interface::util::spawn_thread_pool::{{closure}}
             at ./src/librustc_interface/util.rs:144
 190: rustc_interface::util::scoped_thread::{{closure}}
             at ./src/librustc_interface/util.rs:119
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error: internal compiler error: unexpected panic

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

query stack during panic:
#0 [explicit_predicates_of] processing `Foo::map`
#1 [predicates_defined_on] processing `Foo::map`
#2 [predicates_of] processing `Foo::map`
#3 [collect_mod_item_types] collecting item types in top-level module
#4 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to previous error

For more information about this error, try `rustc --explain E0601`.
@dwrensha
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This looks similar to #70813. cc @matthewjasper

Note that the span for the assertion seems to be wrong:

 14: rustc_middle::ty::sty::Binder<T>::dummy
             at ./src/libstd/macros.rs:13

I would expect the source location to be src/librustc_middle/ty/sty.rs:856:9.

@dwrensha
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If I add an empty main(), then my rustup-installed rustc compiles the program without error:

pub trait Foo {
    fn map() where Self: Sized, for<'a> &'a mut [u8] :;
}
fn main() {}

but my debug build still ICEs.

@Elinvynia Elinvynia added 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. labels May 21, 2020
@JohnTitor JohnTitor mentioned this issue May 28, 2020
Merged
@bors bors closed this as completed in 105cd49 Jul 21, 2020
rust-timer added a commit to rust-timer/rust that referenced this issue Jul 21, 2020
@rust-timer
rust-timer simulated merge of 105cd49
6354c29 
Original message:
Rollup merge of rust-lang#72714 - JohnTitor:debug-assert, r=nikomatsakis

Fix debug assertion in typeck

Fixes rust-lang#72410
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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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Fix debug assertion in typeck JohnTitor/rust
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@dwrensha @Elinvynia