ICE with -Zchalk in monomorphize/collector.rs (double ICE) #80231
Description
Code
use std::ops::Add;
pub trait Encoder {
type Size: Add<Output = Self::Size>;
fn foo(&self) -> Self::Size;
}
pub trait SubEncoder : Encoder {
type ActualSize;
fn bar(&self) -> Self::Size;
}
impl<T> Encoder for T where T: SubEncoder {
type Size = <Self as SubEncoder>::ActualSize;
fn foo(&self) -> Self::Size {
self.bar() + self.bar()
}
}
pub struct UnitEncoder;
impl SubEncoder for UnitEncoder {
type ActualSize = ();
fn bar(&self) {}
}
fn main() {
fun(&UnitEncoder {});
}
pub fn fun<R: Encoder>(encoder: &R) {
encoder.foo();
}Meta
rustc --version --verbose:
rustc 1.50.0-nightly (1f5bc176b 2020-12-19)
binary: rustc
commit-hash: 1f5bc176b0e54a8e464704adcd7e571700207fe9
commit-date: 2020-12-19
host: x86_64-unknown-linux-gnu
release: 1.50.0-nightly
Error output
rustc -Zchalk ./54108.rs
thread 'rustc' panicked at 'called `Result::unwrap()` on an `Err` value: ErrorReported', compiler/rustc_mir/src/monomorphize/collector.rs:746:84
note: run with `RUST_BACKTRACE=1` environment variable to display a 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/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
note: rustc 1.50.0-nightly (1f5bc176b 2020-12-19) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z chalk
query stack during panic:
#0 [collect_and_partition_mono_items] collect_and_partition_mono_items
end of query stack
error: internal compiler error: Encountered error `Unimplemented` selecting `Binder(<() as std::ops::Add>)` during codegen
|
= note: delayed at compiler/rustc_trait_selection/src/traits/codegen.rs:68:32
thread 'rustc' panicked at 'no errors encountered even though `delay_span_bug` issued', compiler/rustc_errors/src/lib.rs:974:13
stack backtrace:
0: 0x7f93be0cf6c7 - std::backtrace_rs::backtrace::libunwind::trace::h746c3e9529d524bc
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
1: 0x7f93be0cf6c7 - std::backtrace_rs::backtrace::trace_unsynchronized::h84373278bfb39e0c
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f93be0cf6c7 - std::sys_common::backtrace::_print_fmt::h517324efde750597
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:67:5
3: 0x7f93be0cf6c7 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf594ab77fac89284
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:46:22
4: 0x7f93be14028c - core::fmt::write::h3868db8542c90941
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/core/src/fmt/mod.rs:1078:17
5: 0x7f93be0c1592 - std::io::Write::write_fmt::h3f6656f045fa877f
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/io/mod.rs:1519:15
6: 0x7f93be0d33b5 - std::sys_common::backtrace::_print::hda7655c057c24dcc
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:49:5
7: 0x7f93be0d33b5 - std::sys_common::backtrace::print::h546a6c8431d46287
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:36:9
8: 0x7f93be0d33b5 - std::panicking::default_hook::{{closure}}::h006dd083853faf51
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:208:50
9: 0x7f93be0d2f0a - std::panicking::default_hook::hf0f9afb1017317fc
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:225:9
10: 0x7f93be973ea8 - rustc_driver::report_ice::h956234bae73e460f
11: 0x7f93be0d3cb6 - std::panicking::rust_panic_with_hook::hb7a19826c029b1d6
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:595:17
12: 0x7f93be0d37d7 - std::panicking::begin_panic_handler::{{closure}}::hde71edcd925d0c5e
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:497:13
13: 0x7f93be0cfb8c - std::sys_common::backtrace::__rust_end_short_backtrace::h8a3c7d6cea578919
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:141:18
14: 0x7f93be0d3739 - rust_begin_unwind
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:493:5
15: 0x7f93be0d36eb - std::panicking::begin_panic_fmt::hee67ce14b77d0396
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:435:5
16: 0x7f93c1b96e61 - rustc_errors::HandlerInner::flush_delayed::h336555a5d5079cda
17: 0x7f93c1b93321 - <rustc_errors::HandlerInner as core::ops::drop::Drop>::drop::he52694f8b8fafc7c
18: 0x7f93be9a76f6 - core::ptr::drop_in_place::ha843d8fbe77cb34a
19: 0x7f93be9aad66 - <alloc::rc::Rc<T> as core::ops::drop::Drop>::drop::h03d9c5cc6a4bc49b
20: 0x7f93be9a843d - core::ptr::drop_in_place::hc6d7a3265adaebf9
21: 0x7f93be99da7c - rustc_span::with_source_map::hb087a1c2bc75d8e9
22: 0x7f93be9e2f8b - rustc_interface::interface::create_compiler_and_run::ha492945fb183c01e
23: 0x7f93be9b1530 - scoped_tls::ScopedKey<T>::set::hf41307147817b997
24: 0x7f93be9c27c7 - std::sys_common::backtrace::__rust_begin_short_backtrace::h645f3b510f7fe2fd
25: 0x7f93be9377ea - core::ops::function::FnOnce::call_once{{vtable.shim}}::h19b1a0a715ec4eae
26: 0x7f93be0e37ba - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hea1090dbdcecbf5a
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/alloc/src/boxed.rs:1328:9
27: 0x7f93be0e37ba - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h8d5723d3912bd325
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/alloc/src/boxed.rs:1328:9
28: 0x7f93be0e37ba - std::sys::unix::thread::Thread::new::thread_start::hc17a425ca2995724
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys/unix/thread.rs:71:17
29: 0x7f93bdfd43e9 - start_thread
30: 0x7f93bdef1293 - __GI___clone
31: 0x0 - <unknown>
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/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
note: rustc 1.50.0-nightly (1f5bc176b 2020-12-19) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z chalk
query stack during panic:
end of query stack
thread panicked while panicking. aborting.
[1] 1935551 illegal hardware instruction (core dumped) rustc -Zchalk ./54108.rs
Backtrace
thread 'rustc' panicked at 'called `Result::unwrap()` on an `Err` value: ErrorReported', compiler/rustc_mir/src/monomorphize/collector.rs:746:84
stack backtrace:
0: 0x7fb9461ad6c7 - std::backtrace_rs::backtrace::libunwind::trace::h746c3e9529d524bc
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
1: 0x7fb9461ad6c7 - std::backtrace_rs::backtrace::trace_unsynchronized::h84373278bfb39e0c
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7fb9461ad6c7 - std::sys_common::backtrace::_print_fmt::h517324efde750597
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:67:5
3: 0x7fb9461ad6c7 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf594ab77fac89284
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:46:22
4: 0x7fb94621e28c - core::fmt::write::h3868db8542c90941
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/core/src/fmt/mod.rs:1078:17
5: 0x7fb94619f592 - std::io::Write::write_fmt::h3f6656f045fa877f
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/io/mod.rs:1519:15
6: 0x7fb9461b13b5 - std::sys_common::backtrace::_print::hda7655c057c24dcc
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:49:5
7: 0x7fb9461b13b5 - std::sys_common::backtrace::print::h546a6c8431d46287
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:36:9
8: 0x7fb9461b13b5 - std::panicking::default_hook::{{closure}}::h006dd083853faf51
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:208:50
9: 0x7fb9461b0f0a - std::panicking::default_hook::hf0f9afb1017317fc
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:225:9
10: 0x7fb946a51ea8 - rustc_driver::report_ice::h956234bae73e460f
11: 0x7fb9461b1cb6 - std::panicking::rust_panic_with_hook::hb7a19826c029b1d6
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:595:17
12: 0x7fb9461b17d7 - std::panicking::begin_panic_handler::{{closure}}::hde71edcd925d0c5e
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:497:13
13: 0x7fb9461adb8c - std::sys_common::backtrace::__rust_end_short_backtrace::h8a3c7d6cea578919
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:141:18
14: 0x7fb9461b1739 - rust_begin_unwind
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:493:5
15: 0x7fb94621a6a1 - core::panicking::panic_fmt::h20225113c4a2f8fd
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/core/src/panicking.rs:92:14
16: 0x7fb94621a313 - core::option::expect_none_failed::hc6d6d4cea4fdc285
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/core/src/option.rs:1268:5
17: 0x7fb9480e9270 - <rustc_mir::monomorphize::collector::MirNeighborCollector as rustc_middle::mir::visit::Visitor>::visit_terminator::hc503154fbce34f86
18: 0x7fb9480eb89b - rustc_mir::monomorphize::collector::collect_neighbours::hcb0c10444e52d2b5
19: 0x7fb9480e57cb - rustc_mir::monomorphize::collector::collect_items_rec::h388840c66600894c
20: 0x7fb9480e597c - rustc_mir::monomorphize::collector::collect_items_rec::h388840c66600894c
21: 0x7fb9480e597c - rustc_mir::monomorphize::collector::collect_items_rec::h388840c66600894c
22: 0x7fb9483236b1 - rustc_session::utils::<impl rustc_session::session::Session>::time::h031fef4084f43d2b
23: 0x7fb9480e4bdd - rustc_mir::monomorphize::collector::collect_crate_mono_items::h0de558e0bd84c135
24: 0x7fb9481bb3c3 - rustc_mir::monomorphize::partitioning::collect_and_partition_mono_items::hb8341ef2950d7ce6
25: 0x7fb946eeab52 - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::collect_and_partition_mono_items>::compute::hc67938a3c3133947
26: 0x7fb946e258be - rustc_query_system::dep_graph::graph::DepGraph<K>::with_eval_always_task::h2ca6615b86509346
27: 0x7fb946e5bf99 - rustc_data_structures::stack::ensure_sufficient_stack::h4535a53c7273efc1
28: 0x7fb946d99adc - rustc_query_system::query::plumbing::get_query_impl::hecc9be70aeb29bd5
29: 0x7fb946f0566c - <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_ssa::traits::backend::CodegenBackend>::codegen_crate::h84729c6a9074acd9
30: 0x7fb946c8c27e - rustc_session::utils::<impl rustc_session::session::Session>::time::he7ae5504f6e865ed
31: 0x7fb946ccc6bc - rustc_interface::passes::QueryContext::enter::h200174b517012d68
32: 0x7fb946d26523 - rustc_interface::queries::Queries::ongoing_codegen::h269e9d8d2434a656
33: 0x7fb946abfdd9 - rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter::h58cc75bad344bc3b
34: 0x7fb946a7b597 - rustc_span::with_source_map::hb087a1c2bc75d8e9
35: 0x7fb946ac0f8b - rustc_interface::interface::create_compiler_and_run::ha492945fb183c01e
36: 0x7fb946a8f530 - scoped_tls::ScopedKey<T>::set::hf41307147817b997
37: 0x7fb946aa07c7 - std::sys_common::backtrace::__rust_begin_short_backtrace::h645f3b510f7fe2fd
38: 0x7fb946a157ea - core::ops::function::FnOnce::call_once{{vtable.shim}}::h19b1a0a715ec4eae
39: 0x7fb9461c17ba - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hea1090dbdcecbf5a
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/alloc/src/boxed.rs:1328:9
40: 0x7fb9461c17ba - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h8d5723d3912bd325
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/alloc/src/boxed.rs:1328:9
41: 0x7fb9461c17ba - std::sys::unix::thread::Thread::new::thread_start::hc17a425ca2995724
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys/unix/thread.rs:71:17
42: 0x7fb9460b23e9 - start_thread
43: 0x7fb945fcf293 - __GI___clone
44: 0x0 - <unknown>
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/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
note: rustc 1.50.0-nightly (1f5bc176b 2020-12-19) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z chalk
query stack during panic:
#0 [collect_and_partition_mono_items] collect_and_partition_mono_items
end of query stack
error: internal compiler error: Encountered error `Unimplemented` selecting `Binder(<() as std::ops::Add>)` during codegen
|
= note: delayed at compiler/rustc_trait_selection/src/traits/codegen.rs:68:32
thread 'rustc' panicked at 'no errors encountered even though `delay_span_bug` issued', compiler/rustc_errors/src/lib.rs:974:13
stack backtrace:
0: 0x7fb9461ad6c7 - std::backtrace_rs::backtrace::libunwind::trace::h746c3e9529d524bc
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
1: 0x7fb9461ad6c7 - std::backtrace_rs::backtrace::trace_unsynchronized::h84373278bfb39e0c
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7fb9461ad6c7 - std::sys_common::backtrace::_print_fmt::h517324efde750597
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:67:5
3: 0x7fb9461ad6c7 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf594ab77fac89284
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:46:22
4: 0x7fb94621e28c - core::fmt::write::h3868db8542c90941
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/core/src/fmt/mod.rs:1078:17
5: 0x7fb94619f592 - std::io::Write::write_fmt::h3f6656f045fa877f
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/io/mod.rs:1519:15
6: 0x7fb9461b13b5 - std::sys_common::backtrace::_print::hda7655c057c24dcc
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:49:5
7: 0x7fb9461b13b5 - std::sys_common::backtrace::print::h546a6c8431d46287
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:36:9
8: 0x7fb9461b13b5 - std::panicking::default_hook::{{closure}}::h006dd083853faf51
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:208:50
9: 0x7fb9461b0f0a - std::panicking::default_hook::hf0f9afb1017317fc
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:225:9
10: 0x7fb946a51ea8 - rustc_driver::report_ice::h956234bae73e460f
11: 0x7fb9461b1cb6 - std::panicking::rust_panic_with_hook::hb7a19826c029b1d6
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:595:17
12: 0x7fb9461b17d7 - std::panicking::begin_panic_handler::{{closure}}::hde71edcd925d0c5e
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:497:13
13: 0x7fb9461adb8c - std::sys_common::backtrace::__rust_end_short_backtrace::h8a3c7d6cea578919
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys_common/backtrace.rs:141:18
14: 0x7fb9461b1739 - rust_begin_unwind
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:493:5
15: 0x7fb9461b16eb - std::panicking::begin_panic_fmt::hee67ce14b77d0396
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/panicking.rs:435:5
16: 0x7fb949c74e61 - rustc_errors::HandlerInner::flush_delayed::h336555a5d5079cda
17: 0x7fb949c71321 - <rustc_errors::HandlerInner as core::ops::drop::Drop>::drop::he52694f8b8fafc7c
18: 0x7fb946a856f6 - core::ptr::drop_in_place::ha843d8fbe77cb34a
19: 0x7fb946a88d66 - <alloc::rc::Rc<T> as core::ops::drop::Drop>::drop::h03d9c5cc6a4bc49b
20: 0x7fb946a8643d - core::ptr::drop_in_place::hc6d7a3265adaebf9
21: 0x7fb946a7ba7c - rustc_span::with_source_map::hb087a1c2bc75d8e9
22: 0x7fb946ac0f8b - rustc_interface::interface::create_compiler_and_run::ha492945fb183c01e
23: 0x7fb946a8f530 - scoped_tls::ScopedKey<T>::set::hf41307147817b997
24: 0x7fb946aa07c7 - std::sys_common::backtrace::__rust_begin_short_backtrace::h645f3b510f7fe2fd
25: 0x7fb946a157ea - core::ops::function::FnOnce::call_once{{vtable.shim}}::h19b1a0a715ec4eae
26: 0x7fb9461c17ba - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hea1090dbdcecbf5a
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/alloc/src/boxed.rs:1328:9
27: 0x7fb9461c17ba - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h8d5723d3912bd325
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/alloc/src/boxed.rs:1328:9
28: 0x7fb9461c17ba - std::sys::unix::thread::Thread::new::thread_start::hc17a425ca2995724
at /rustc/1f5bc176b0e54a8e464704adcd7e571700207fe9/library/std/src/sys/unix/thread.rs:71:17
29: 0x7fb9460b23e9 - start_thread
30: 0x7fb945fcf293 - __GI___clone
31: 0x0 - <unknown>
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/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
note: rustc 1.50.0-nightly (1f5bc176b 2020-12-19) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z chalk
query stack during panic:
end of query stack
thread panicked while panicking. aborting.
[1] 1935605 illegal hardware instruction (core dumped) RUST_BACKTRACE=full rustc -Zchalk ./54108.rs