Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

ICE: broken mir #110683

Closed
matthiaskrgr opened this issue Apr 22, 2023 · 5 comments · Fixed by #112215
Closed

ICE: broken mir #110683

matthiaskrgr opened this issue Apr 22, 2023 · 5 comments · Fixed by #112215
Labels
C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

Comments

@matthiaskrgr
Copy link
Member

Code

#![crate_type = "lib"]

use std::ops::Sub;
trait Vector2 {
    type ScalarType;

    fn from_values(x: Self::ScalarType, y: Self::ScalarType) -> Vec2
    where
        Self: Sized;

    fn x(&self) -> Self::ScalarType;
    fn y(&self) -> Self::ScalarType;
}

impl<T> Sub for dyn Vector2<ScalarType = T>
where
    T: Sub<Output = T>,
    (dyn Vector2<ScalarType = T>): Sized,
{
    type Output = dyn Vector2<ScalarType = T>;

    fn sub(self, rhs: Self) -> Self::Output {
        Self::from_values(self.x() - rhs.x(), self.y() - rhs.y())
    }
}

struct Vec2 {
    x: i32,
    y: i32,
}

Meta

rustc --version --verbose:

rustc 1.71.0-nightly (fec9adcdb 2023-04-21)
binary: rustc
commit-hash: fec9adcdbc21469ef105162cc8cabf81c72d06be
commit-date: 2023-04-21
host: x86_64-unknown-linux-gnu
release: 1.71.0-nightly
LLVM version: 16.0.2

Error output

-
Backtrace 

warning: fields `x` and `y` are never read
  --> treereduce.out:28:5
   |
27 | struct Vec2 {
   |        ---- fields in this struct
28 |     x: i32,
   |     ^
29 |     y: i32,
   |     ^
   |
   = note: `#[warn(dead_code)]` on by default

error: internal compiler error: no errors encountered even though `delay_span_bug` issued

error: internal compiler error: broken MIR in DefId(0:12 ~ treereduce[24c2]::{impl#0}::sub) (Terminator { source_info: SourceInfo { span: treereduce.out:23:9: 23:66 (#0), scope: scope[0] }, kind: _0 = <dyn Vector2<ScalarType = T> as Vector2>::from_values(move _3, move _8) -> [return: bb7, unwind: bb10] }): call dest mismatch (dyn Vector2<ScalarType = T> <- Vec2): NoSolution
  --> treereduce.out:23:64
   |
23 |         Self::from_values(self.x() - rhs.x(), self.y() - rhs.y())
   |                                                                ^
   |
   = note: delayed at    0: <rustc_errors::HandlerInner>::emit_diagnostic
              1: <rustc_errors::Handler>::delay_span_bug::<rustc_span::span_encoding::Span, &str>
              2: <rustc_borrowck::type_check::TypeChecker>::typeck_mir
              3: rustc_borrowck::type_check::type_check
              4: rustc_borrowck::nll::compute_regions
              5: rustc_borrowck::do_mir_borrowck
              6: rustc_borrowck::mir_borrowck
              7: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::mir_borrowck, rustc_query_impl::plumbing::QueryCtxt>
              8: rustc_data_structures::sync::par_for_each_in::<&[rustc_span::def_id::LocalDefId], <rustc_middle::hir::map::Map>::par_body_owners<rustc_interface::passes::analysis::{closure#2}::{closure#0}>::{closure#0}>
              9: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#2}>
             10: rustc_interface::passes::analysis
             11: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::analysis, rustc_query_impl::plumbing::QueryCtxt>
             12: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis
             13: <rustc_middle::ty::context::GlobalCtxt>::enter::<rustc_driver_impl::run_compiler::{closure#1}::{closure#2}::{closure#4}, core::result::Result<(), rustc_span::ErrorGuaranteed>>
             14: <rustc_interface::interface::Compiler>::enter::<rustc_driver_impl::run_compiler::{closure#1}::{closure#2}, core::result::Result<core::option::Option<rustc_interface::queries::Linker>, rustc_span::ErrorGuaranteed>>
             15: rustc_span::set_source_map::<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_interface::interface::run_compiler<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
             16: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>
             17: std::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>
             18: <<std::thread::Builder>::spawn_unchecked_<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
             19: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                        at /rustc/fec9adcdbc21469ef105162cc8cabf81c72d06be/library/alloc/src/boxed.rs:1962:9
             20: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                        at /rustc/fec9adcdbc21469ef105162cc8cabf81c72d06be/library/alloc/src/boxed.rs:1962:9
             21: std::sys::unix::thread::Thread::new::thread_start
                        at /rustc/fec9adcdbc21469ef105162cc8cabf81c72d06be/library/std/src/sys/unix/thread.rs:108:17
             22: <unknown>
             23: <unknown>


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 1.71.0-nightly (fec9adcdb 2023-04-21) running on x86_64-unknown-linux-gnu

query stack during panic:
end of query stack
error: aborting due to 2 previous errors; 1 warning emitted

@matthiaskrgr matthiaskrgr 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 Apr 22, 2023
@lukas-code
Copy link
Member

reduced

trait Trait<T> {}
fn foo<T>() -> dyn Trait<T>
where
    dyn Trait<T>: Sized,
{
    42
}

@matthiaskrgr
Copy link
Member Author

almost exactly 3 years old 🍰 🥳 🪅

searched toolchains nightly-2020-04-17 through nightly-2023-04-22

Regression in nightly-2020-04-23

found 7 bors merge commits in the specified range
commit[0] 2020-04-21: Auto merge of #71170 - spastorino:dyn-fnonce-alignment, r=nikomatsakis
commit[1] 2020-04-22: Auto merge of #71402 - ehuss:update-cargo, r=ehuss
commit[2] 2020-04-22: Auto merge of #71410 - JohnTitor:rollup-vh6dut5, r=JohnTitor
commit[3] 2020-04-22: Auto merge of #71323 - nnethercote:bitcode-in-rlib, r=alexcrichton
commit[4] 2020-04-22: Auto merge of #71424 - Dylan-DPC:rollup-iunh61a, r=Dylan-DPC
commit[5] 2020-04-22: Auto merge of #71374 - nnethercote:alphabetize-C-and-Z-options, r=petrochenkov
commit[6] 2020-04-22: Auto merge of #71431 - Dylan-DPC:rollup-rvm6tfy, r=Dylan-DPC

probably #71170 ? cc @spastorino

@matthiaskrgr matthiaskrgr added the S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue label Apr 22, 2023
@compiler-errors
Copy link
Member

I feel like i've seen this before -- probably a dupe? Or at least I think I've chatted with @JakobDegen about this.

@matthiaskrgr
Copy link
Member Author

Could be :D probably 90% of the ICEs I am seeing are already reported in some way or another and sometimes one might slip through

@matthiaskrgr
Copy link
Member Author

different stacktrace with debug assertions:

error: internal compiler error: /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_const_eval/src/interpret/eval_context.rs:373:21: expected type differs from actual type.
                                expected: dyn Trait<T>
                                actual: i32
 --> /home/matthias/vcs/github/glacier2/fixed/110683-2.rs:2:1
  |
2 | / fn foo<T>() -> dyn Trait<T>
3 | | where
4 | |     dyn Trait<T>: Sized,
  | |________________________^

thread 'rustc' panicked at 'Box<dyn Any>', /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_errors/src/lib.rs:994:33
stack backtrace:
   0:     0x7faa3b507d30 - std::backtrace_rs::backtrace::libunwind::trace::h82a01fdfaabd5a1a
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7faa3b507d30 - std::backtrace_rs::backtrace::trace_unsynchronized::hffa6767100d66420
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7faa3b507d30 - std::sys_common::backtrace::_print_fmt::h74f6c3d0a9a9ce5b
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7faa3b507d30 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he9e52926a6e2127e
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7faa3b5ad7f8 - core::fmt::rt::Argument::fmt::hc4c26a7b0473f845
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/fmt/rt.rs:138:9
   5:     0x7faa3b5ad7f8 - core::fmt::write::he3860e7dd81c785d
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/fmt/mod.rs:1105:21
   6:     0x7faa3b512c6f - std::io::Write::write_fmt::h1d46a19a46248b80
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/io/mod.rs:1712:15
   7:     0x7faa3b507b35 - std::sys_common::backtrace::_print::h446dc5d7159c27aa
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7faa3b507b35 - std::sys_common::backtrace::print::h8f7c186ef5b763ba
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7faa3b529924 - std::panicking::default_hook::{{closure}}::h89a81a9b45f95793
  10:     0x7faa3b5295f3 - std::panicking::default_hook::h95b864b81403d0a0
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:288:9
  11:     0x7faa3dd7c545 - <alloc[32b43e9536c01a3]::boxed::Box<dyn for<'a, 'b> core[c5d5d662f7508502]::ops::function::Fn<(&'a core[c5d5d662f7508502]::panic::panic_info::PanicInfo<'b>,), Output = ()> + core[c5d5d662f7508502]::marker::Send + core[c5d5d662f7508502]::marker::Sync> as core[c5d5d662f7508502]::ops::function::Fn<(&core[c5d5d662f7508502]::panic::panic_info::PanicInfo,)>>::call
                               at /home/matthias/vcs/github/rust_debug_assertions/library/alloc/src/boxed.rs:1976:9
  12:     0x7faa3dd7c545 - rustc_driver_impl[53efafbd9bff7be4]::DEFAULT_HOOK::{closure#0}::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_driver_impl/src/lib.rs:1216:17
  13:     0x7faa3b52a1e2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::he8f582d27e234b1d
                               at /home/matthias/vcs/github/rust_debug_assertions/library/alloc/src/boxed.rs:1976:9
  14:     0x7faa3b52a1e2 - std::panicking::rust_panic_with_hook::hc2808e8c83026a9a
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:695:13
  15:     0x7faa3f19fd03 - std[b1ead81ad33b16ee]::panicking::begin_panic::<rustc_errors[13dec1ce28b8d9e2]::ExplicitBug>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:611:9
  16:     0x7faa3f188a66 - std[b1ead81ad33b16ee]::sys_common::backtrace::__rust_end_short_backtrace::<std[b1ead81ad33b16ee]::panicking::begin_panic<rustc_errors[13dec1ce28b8d9e2]::ExplicitBug>::{closure#0}, !>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:150:18
  17:     0x7faa3f3bee26 - std[b1ead81ad33b16ee]::panicking::begin_panic::<rustc_errors[13dec1ce28b8d9e2]::ExplicitBug>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:610:12
  18:     0x7faa3f2001c4 - std[b1ead81ad33b16ee]::panic::panic_any::<rustc_errors[13dec1ce28b8d9e2]::ExplicitBug>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panic.rs:61:5
  19:     0x7faa3f2001c4 - <rustc_errors[13dec1ce28b8d9e2]::HandlerInner>::span_bug::<rustc_span[3855b6ad9a182eb9]::span_encoding::Span, &alloc[32b43e9536c01a3]::string::String>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_errors/src/lib.rs:1581:9
  20:     0x7faa3f1ffef7 - <rustc_errors[13dec1ce28b8d9e2]::Handler>::span_bug::<rustc_span[3855b6ad9a182eb9]::span_encoding::Span, &alloc[32b43e9536c01a3]::string::String>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_errors/src/lib.rs:994:9
  21:     0x7faa3f338d1e - rustc_middle[845fc97cf5814d51]::util::bug::opt_span_bug_fmt::<rustc_span[3855b6ad9a182eb9]::span_encoding::Span>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/util/bug.rs:34:40
  22:     0x7faa3f338d84 - rustc_middle[845fc97cf5814d51]::ty::context::tls::with_opt::<rustc_middle[845fc97cf5814d51]::util::bug::opt_span_bug_fmt<rustc_span[3855b6ad9a182eb9]::span_encoding::Span>::{closure#0}, !>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:154:36
  23:     0x7faa3f333a5e - rustc_middle[845fc97cf5814d51]::ty::context::tls::with_context_opt::<rustc_middle[845fc97cf5814d51]::ty::context::tls::with_opt<rustc_middle[845fc97cf5814d51]::util::bug::opt_span_bug_fmt<rustc_span[3855b6ad9a182eb9]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:100:18
  24:     0x7faa3f332695 - rustc_middle[845fc97cf5814d51]::ty::context::tls::with_opt::<rustc_middle[845fc97cf5814d51]::util::bug::opt_span_bug_fmt<rustc_span[3855b6ad9a182eb9]::span_encoding::Span>::{closure#0}, !>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:154:5
  25:     0x7faa3f332695 - rustc_middle[845fc97cf5814d51]::util::bug::opt_span_bug_fmt::<rustc_span[3855b6ad9a182eb9]::span_encoding::Span>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/util/bug.rs:31:5
  26:     0x7faa3f332695 - rustc_middle[845fc97cf5814d51]::util::bug::span_bug_fmt::<rustc_span[3855b6ad9a182eb9]::span_encoding::Span>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/util/bug.rs:22:5
  27:     0x7faa3f16d1f0 - rustc_const_eval[965bf4a413e5589a]::interpret::eval_context::from_known_layout::<<rustc_const_eval[965bf4a413e5589a]::interpret::eval_context::InterpCx<rustc_mir_transform[739760d2f9109a0c]::const_prop::ConstPropMachine>>::const_val_to_op::{closure#1}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_const_eval/src/interpret/eval_context.rs:373:21
  28:     0x7faa3f16d1f0 - <rustc_const_eval[965bf4a413e5589a]::interpret::eval_context::InterpCx<rustc_mir_transform[739760d2f9109a0c]::const_prop::ConstPropMachine>>::const_val_to_op
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_const_eval/src/interpret/operand.rs:643:22
  29:     0x7faa3f16eaa9 - <rustc_const_eval[965bf4a413e5589a]::interpret::eval_context::InterpCx<rustc_mir_transform[739760d2f9109a0c]::const_prop::ConstPropMachine>>::eval_mir_constant
  30:     0x7faa3f16ca73 - <rustc_const_eval[965bf4a413e5589a]::interpret::eval_context::InterpCx<rustc_mir_transform[739760d2f9109a0c]::const_prop::ConstPropMachine>>::eval_operand
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_const_eval/src/interpret/operand.rs:565:17
  31:     0x7faa3f1566f5 - <rustc_const_eval[965bf4a413e5589a]::interpret::eval_context::InterpCx<rustc_mir_transform[739760d2f9109a0c]::const_prop::ConstPropMachine>>::eval_rvalue_into_place
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_const_eval/src/interpret/step.rs:172:26
  32:     0x7faa3f40f8ba - <rustc_mir_transform[739760d2f9109a0c]::const_prop_lint::ConstPropagator as rustc_middle[845fc97cf5814d51]::mir::visit::Visitor>::visit_assign::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_mir_transform/src/const_prop_lint.rs:604:47
  33:     0x7faa3f40f8ba - <rustc_mir_transform[739760d2f9109a0c]::const_prop_lint::ConstPropagator>::use_ecx::<<rustc_mir_transform[739760d2f9109a0c]::const_prop_lint::ConstPropagator as rustc_middle[845fc97cf5814d51]::mir::visit::Visitor>::visit_assign::{closure#0}, ()>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_mir_transform/src/const_prop_lint.rs:264:15
  34:     0x7faa3f40f8ba - <rustc_mir_transform[739760d2f9109a0c]::const_prop_lint::ConstPropagator as rustc_middle[845fc97cf5814d51]::mir::visit::Visitor>::visit_assign
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_mir_transform/src/const_prop_lint.rs:603:20
  35:     0x7faa3f410fc5 - <rustc_mir_transform[739760d2f9109a0c]::const_prop_lint::ConstPropagator as rustc_middle[845fc97cf5814d51]::mir::visit::Visitor>::super_statement
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/mir/visit.rs:370:25
  36:     0x7faa3f410fc5 - <rustc_mir_transform[739760d2f9109a0c]::const_prop_lint::ConstPropagator as rustc_middle[845fc97cf5814d51]::mir::visit::Visitor>::visit_statement
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_mir_transform/src/const_prop_lint.rs:633:9
  37:     0x7faa3f4132ce - <rustc_mir_transform[739760d2f9109a0c]::const_prop_lint::ConstPropagator as rustc_middle[845fc97cf5814d51]::mir::visit::Visitor>::super_basic_block_data
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/mir/visit.rs:299:21
  38:     0x7faa3f4132ce - <rustc_mir_transform[739760d2f9109a0c]::const_prop_lint::ConstPropagator as rustc_middle[845fc97cf5814d51]::mir::visit::Visitor>::visit_basic_block_data
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_mir_transform/src/const_prop_lint.rs:702:9
  39:     0x7faa3f40e590 - <rustc_mir_transform[739760d2f9109a0c]::const_prop_lint::ConstPropagator as rustc_middle[845fc97cf5814d51]::mir::visit::Visitor>::visit_body
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_mir_transform/src/const_prop_lint.rs:579:13
  40:     0x7faa3f409c78 - <rustc_mir_transform[739760d2f9109a0c]::const_prop_lint::ConstProp as rustc_mir_transform[739760d2f9109a0c]::pass_manager::MirLint>::run_lint
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_mir_transform/src/const_prop_lint.rs:119:9
  41:     0x7faa3f3d3c15 - rustc_mir_transform[739760d2f9109a0c]::pass_manager::run_passes_inner
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_mir_transform/src/pass_manager.rs:124:13
  42:     0x7faa3f28e326 - rustc_mir_transform[739760d2f9109a0c]::pass_manager::run_passes_no_validate
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_mir_transform/src/pass_manager.rs:73:5
  43:     0x7faa3f28e326 - rustc_mir_transform[739760d2f9109a0c]::run_runtime_lowering_passes
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_mir_transform/src/lib.rs:504:5
  44:     0x7faa3f28e326 - rustc_mir_transform[739760d2f9109a0c]::run_analysis_to_runtime_passes
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_mir_transform/src/lib.rs:462:5
  45:     0x7faa3f28d8b5 - rustc_mir_transform[739760d2f9109a0c]::mir_drops_elaborated_and_const_checked
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_mir_transform/src/lib.rs:437:5
  46:     0x7faa3f952b90 - <rustc_query_impl[8836e06ed595946d]::queries::mir_drops_elaborated_and_const_checked as rustc_query_system[3c70281160596a91]::query::config::QueryConfig<rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt>>::compute
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:524:21
  47:     0x7faa3f952b90 - rustc_query_system[3c70281160596a91]::query::plumbing::execute_job_non_incr::<rustc_query_impl[8836e06ed595946d]::queries::mir_drops_elaborated_and_const_checked, rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:464:72
  48:     0x7faa3f952b90 - rustc_middle[845fc97cf5814d51]::ty::context::tls::enter_context::<rustc_query_system[3c70281160596a91]::query::plumbing::execute_job_non_incr<rustc_query_impl[8836e06ed595946d]::queries::mir_drops_elaborated_and_const_checked, rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:82:9
  49:     0x7faa3f952b90 - <std[b1ead81ad33b16ee]::thread::local::LocalKey<core[c5d5d662f7508502]::cell::Cell<*const ()>>>::try_with::<rustc_middle[845fc97cf5814d51]::ty::context::tls::enter_context<rustc_query_system[3c70281160596a91]::query::plumbing::execute_job_non_incr<rustc_query_impl[8836e06ed595946d]::queries::mir_drops_elaborated_and_const_checked, rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/local.rs:270:16
  50:     0x7faa3f952b90 - <std[b1ead81ad33b16ee]::thread::local::LocalKey<core[c5d5d662f7508502]::cell::Cell<*const ()>>>::with::<rustc_middle[845fc97cf5814d51]::ty::context::tls::enter_context<rustc_query_system[3c70281160596a91]::query::plumbing::execute_job_non_incr<rustc_query_impl[8836e06ed595946d]::queries::mir_drops_elaborated_and_const_checked, rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/local.rs:246:9
  51:     0x7faa3f952b90 - rustc_middle[845fc97cf5814d51]::ty::context::tls::enter_context::<rustc_query_system[3c70281160596a91]::query::plumbing::execute_job_non_incr<rustc_query_impl[8836e06ed595946d]::queries::mir_drops_elaborated_and_const_checked, rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:79:9
  52:     0x7faa3f952b90 - <rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt as rustc_query_system[3c70281160596a91]::query::QueryContext>::start_query::<rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[3c70281160596a91]::query::plumbing::execute_job_non_incr<rustc_query_impl[8836e06ed595946d]::queries::mir_drops_elaborated_and_const_checked, rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:127:13
  53:     0x7faa3f952b90 - rustc_middle[845fc97cf5814d51]::ty::context::tls::with_related_context::<<rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt as rustc_query_system[3c70281160596a91]::query::QueryContext>::start_query<rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[3c70281160596a91]::query::plumbing::execute_job_non_incr<rustc_query_impl[8836e06ed595946d]::queries::mir_drops_elaborated_and_const_checked, rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:133:9
  54:     0x7faa3f952b90 - rustc_middle[845fc97cf5814d51]::ty::context::tls::with_context::<rustc_middle[845fc97cf5814d51]::ty::context::tls::with_related_context<<rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt as rustc_query_system[3c70281160596a91]::query::QueryContext>::start_query<rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[3c70281160596a91]::query::plumbing::execute_job_non_incr<rustc_query_impl[8836e06ed595946d]::queries::mir_drops_elaborated_and_const_checked, rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:111:36
  55:     0x7faa3f952b90 - rustc_middle[845fc97cf5814d51]::ty::context::tls::with_context_opt::<rustc_middle[845fc97cf5814d51]::ty::context::tls::with_context<rustc_middle[845fc97cf5814d51]::ty::context::tls::with_related_context<<rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt as rustc_query_system[3c70281160596a91]::query::QueryContext>::start_query<rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[3c70281160596a91]::query::plumbing::execute_job_non_incr<rustc_query_impl[8836e06ed595946d]::queries::mir_drops_elaborated_and_const_checked, rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:100:18
  56:     0x7faa3f952b90 - rustc_middle[845fc97cf5814d51]::ty::context::tls::with_context::<rustc_middle[845fc97cf5814d51]::ty::context::tls::with_related_context<<rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt as rustc_query_system[3c70281160596a91]::query::QueryContext>::start_query<rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[3c70281160596a91]::query::plumbing::execute_job_non_incr<rustc_query_impl[8836e06ed595946d]::queries::mir_drops_elaborated_and_const_checked, rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:111:5
  57:     0x7faa3f952b90 - rustc_middle[845fc97cf5814d51]::ty::context::tls::with_related_context::<<rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt as rustc_query_system[3c70281160596a91]::query::QueryContext>::start_query<rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[3c70281160596a91]::query::plumbing::execute_job_non_incr<rustc_query_impl[8836e06ed595946d]::queries::mir_drops_elaborated_and_const_checked, rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt>::{closure#0}>::{closure#0}, rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:124:5
  58:     0x7faa3f952b90 - <rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt as rustc_query_system[3c70281160596a91]::query::QueryContext>::start_query::<rustc_middle[845fc97cf5814d51]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[3c70281160596a91]::query::plumbing::execute_job_non_incr<rustc_query_impl[8836e06ed595946d]::queries::mir_drops_elaborated_and_const_checked, rustc_query_impl[8836e06ed595946d]::plumbing::QueryCtxt>::{closure#0}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:112:9

@lukas-code lukas-code mentioned this issue Jun 2, 2023
Closed
@compiler-errors compiler-errors mentioned this issue Jun 2, 2023
Merged
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this issue Jun 3, 2023
@matthiaskrgr
Rollup merge of rust-lang#112215 - compiler-errors:check-sized-better…
a6e3036 
…, r=cjgillot

only suppress coercion error if type is definitely unsized

we previously suppressed coercion errors when the return type was `dyn Trait` because we expect a far more descriptive `Sized` trait error to be emitted instead, however the code that does this suppression does not consider where-clause predicates since it just looked at the HIR. let's do that instead by creating an obligation and checking if it may hold.

fixes rust-lang#110683
fixes rust-lang#112208
@bors bors closed this as completed in 20cbbbb Jun 3, 2023
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
Projects
None yet
Milestone
No milestone
Development

Successfully merging a pull request may close this issue.

only suppress coercion error if type is definitely unsized compiler-errors/rust
4 participants
@matthiaskrgr @compiler-errors @lukas-code and others