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ICE: ` unhandled type: {type error}` #125185

Open matthiaskrgr opened 2 weeks ago

matthiaskrgr commented 2 weeks ago

auto-reduced (treereduce-rust):

type Foo = impl Send;

struct A;

const VALUE: Foo = value();

fn test(foo: Foo<'a>, f: impl for<'b> FnMut()) {
    match VALUE {
        0 | 0 => {}

        _ => (),
    }
}

original:

type Foo = impl Send;

struct A;

const VALUE: Foo = value();

fn test(
        foo: Foo<'a>,
        f: impl for<'b> FnMut(Self::FooRef<'b>),
    ) {
    match VALUE {
        0 | 0 => {}

        _ => (),
    }
}

Version information

rustc 1.80.0-nightly (97bf25c8c 2024-05-16)
binary: rustc
commit-hash: 97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f
commit-date: 2024-05-16
host: x86_64-unknown-linux-gnu
release: 1.80.0-nightly
LLVM version: 18.1.4

Command: /home/matthias/.rustup/toolchains/master/bin/rustc -Zvalidate-mir

Program output

``` error[E0261]: use of undeclared lifetime name `'a` --> /tmp/icemaker_global_tempdir.6IiXJq3YtRlA/rustc_testrunner_tmpdir_reporting.KGuZhLmwhEmD/mvce.rs:7:18 | 7 | fn test(foo: Foo<'a>, f: impl for<'b> FnMut()) { | - ^^ undeclared lifetime | | | help: consider introducing lifetime `'a` here: `<'a>` error[E0658]: `impl Trait` in type aliases is unstable --> /tmp/icemaker_global_tempdir.6IiXJq3YtRlA/rustc_testrunner_tmpdir_reporting.KGuZhLmwhEmD/mvce.rs:1:12 | 1 | type Foo = impl Send; | ^^^^^^^^^ | = note: see issue #63063 for more information = help: add `#![feature(type_alias_impl_trait)]` to the crate attributes to enable = note: this compiler was built on 2024-05-16; consider upgrading it if it is out of date error[E0601]: `main` function not found in crate `mvce` --> /tmp/icemaker_global_tempdir.6IiXJq3YtRlA/rustc_testrunner_tmpdir_reporting.KGuZhLmwhEmD/mvce.rs:13:2 | 13 | } | ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.6IiXJq3YtRlA/rustc_testrunner_tmpdir_reporting.KGuZhLmwhEmD/mvce.rs` error[E0425]: cannot find function `value` in this scope --> /tmp/icemaker_global_tempdir.6IiXJq3YtRlA/rustc_testrunner_tmpdir_reporting.KGuZhLmwhEmD/mvce.rs:5:20 | 5 | const VALUE: Foo = value(); | ^^^^^ not found in this scope error[E0107]: type alias takes 0 lifetime arguments but 1 lifetime argument was supplied --> /tmp/icemaker_global_tempdir.6IiXJq3YtRlA/rustc_testrunner_tmpdir_reporting.KGuZhLmwhEmD/mvce.rs:7:14 | 7 | fn test(foo: Foo<'a>, f: impl for<'b> FnMut()) { | ^^^---- help: remove these generics | | | expected 0 lifetime arguments | note: type alias defined here, with 0 lifetime parameters --> /tmp/icemaker_global_tempdir.6IiXJq3YtRlA/rustc_testrunner_tmpdir_reporting.KGuZhLmwhEmD/mvce.rs:1:6 | 1 | type Foo = impl Send; | ^^^ warning: unreachable pattern --> /tmp/icemaker_global_tempdir.6IiXJq3YtRlA/rustc_testrunner_tmpdir_reporting.KGuZhLmwhEmD/mvce.rs:9:13 | 9 | 0 | 0 => {} | ^ | = note: `#[warn(unreachable_patterns)]` on by default warning: unused variable: `foo` --> /tmp/icemaker_global_tempdir.6IiXJq3YtRlA/rustc_testrunner_tmpdir_reporting.KGuZhLmwhEmD/mvce.rs:7:9 | 7 | fn test(foo: Foo<'a>, f: impl for<'b> FnMut()) { | ^^^ help: if this is intentional, prefix it with an underscore: `_foo` | = note: `#[warn(unused_variables)]` on by default warning: unused variable: `f` --> /tmp/icemaker_global_tempdir.6IiXJq3YtRlA/rustc_testrunner_tmpdir_reporting.KGuZhLmwhEmD/mvce.rs:7:23 | 7 | fn test(foo: Foo<'a>, f: impl for<'b> FnMut()) { | ^ help: if this is intentional, prefix it with an underscore: `_f` error: internal compiler error: compiler/rustc_const_eval/src/transform/validate.rs:1374:30: unhandled type: {type error} thread 'rustc' panicked at compiler/rustc_const_eval/src/transform/validate.rs:1374:30: Box stack backtrace: 0: 0x733ec3d339e5 - std::backtrace_rs::backtrace::libunwind::trace::h5fef6a8b33f07067 at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5 1: 0x733ec3d339e5 - std::backtrace_rs::backtrace::trace_unsynchronized::h6b8a04457810b752 at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 2: 0x733ec3d339e5 - std::sys_common::backtrace::_print_fmt::h77d7d1bbbc4229b7 at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/std/src/sys_common/backtrace.rs:68:5 3: 0x733ec3d339e5 - ::fmt::hf20574f93e14a2f1 at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/std/src/sys_common/backtrace.rs:44:22 4: 0x733ec3d82b9b - core::fmt::rt::Argument::fmt::h23348174c5722978 at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/core/src/fmt/rt.rs:165:63 5: 0x733ec3d82b9b - core::fmt::write::hd7cce5a4518d8fcc at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/core/src/fmt/mod.rs:1169:21 6: 0x733ec3d286cf - std::io::Write::write_fmt::he0dc0196eacbf547 at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/std/src/io/mod.rs:1835:15 7: 0x733ec3d337be - std::sys_common::backtrace::_print::h8c8ac3edb452e461 at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/std/src/sys_common/backtrace.rs:47:5 8: 0x733ec3d337be - std::sys_common::backtrace::print::h585b780817d313e4 at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/std/src/sys_common/backtrace.rs:34:9 9: 0x733ec3d361b9 - std::panicking::default_hook::{{closure}}::h6f51b42428cf3ee0 10: 0x733ec3d35efd - std::panicking::default_hook::h7c2d4035884dc1c0 at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/std/src/panicking.rs:298:9 11: 0x733ec06fd2ff - std[9df4ad2bb6f4fdc9]::panicking::update_hook::>::{closure#0} 12: 0x733ec3d368eb - as core::ops::function::Fn>::call::h61418e85d4bc7a4f at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/alloc/src/boxed.rs:2036:9 13: 0x733ec3d368eb - std::panicking::rust_panic_with_hook::hf60a62c858a4a3e2 at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/std/src/panicking.rs:799:13 14: 0x733ec072d084 - std[9df4ad2bb6f4fdc9]::panicking::begin_panic::::{closure#0} 15: 0x733ec0729c86 - std[9df4ad2bb6f4fdc9]::sys_common::backtrace::__rust_end_short_backtrace::::{closure#0}, !> 16: 0x733ec0729966 - std[9df4ad2bb6f4fdc9]::panicking::begin_panic:: 17: 0x733ec0736321 - ::emit_producing_guarantee 18: 0x733ec0bfc88c - rustc_middle[6382b0f0af84a456]::util::bug::opt_span_bug_fmt::::{closure#0} 19: 0x733ec0be175a - rustc_middle[6382b0f0af84a456]::ty::context::tls::with_opt::::{closure#0}, !>::{closure#0} 20: 0x733ec0be15fb - rustc_middle[6382b0f0af84a456]::ty::context::tls::with_context_opt::::{closure#0}, !>::{closure#0}, !> 21: 0x733ebeeeaef0 - rustc_middle[6382b0f0af84a456]::util::bug::bug_fmt 22: 0x733ebf5778cd - ::visit_terminator 23: 0x733ec233096c - rustc_const_eval[ec18fc4bc70e7081]::transform::validate::validate_types 24: 0x733ebfb57e18 - ::run_pass 25: 0x733ebfbf7100 - rustc_mir_transform[598a3370fed2ea16]::pass_manager::validate_body 26: 0x733ec1a01c85 - rustc_mir_transform[598a3370fed2ea16]::pass_manager::run_passes_inner 27: 0x733ec1ea4850 - rustc_mir_transform[598a3370fed2ea16]::mir_drops_elaborated_and_const_checked 28: 0x733ec1ea407d - rustc_query_impl[f76ee426649ffec0]::plumbing::__rust_begin_short_backtrace::> 29: 0x733ec2109bf1 - rustc_query_system[67be369387497d6c]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[f76ee426649ffec0]::plumbing::QueryCtxt, false> 30: 0x733ec210958c - rustc_query_impl[f76ee426649ffec0]::query_impl::mir_drops_elaborated_and_const_checked::get_query_non_incr::__rust_end_short_backtrace 31: 0x733ec258cd88 - rustc_interface[8a51f960ec385412]::passes::analysis 32: 0x733ec258bb5b - rustc_query_impl[f76ee426649ffec0]::plumbing::__rust_begin_short_backtrace::> 33: 0x733ec27e1525 - rustc_query_system[67be369387497d6c]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[f76ee426649ffec0]::plumbing::QueryCtxt, false> 34: 0x733ec27e1289 - rustc_query_impl[f76ee426649ffec0]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace 35: 0x733ec2672c0e - rustc_interface[8a51f960ec385412]::interface::run_compiler::, rustc_driver_impl[aefe405b0e9c583e]::run_compiler::{closure#0}>::{closure#1} 36: 0x733ec265e5c9 - std[9df4ad2bb6f4fdc9]::sys_common::backtrace::__rust_begin_short_backtrace::, rustc_driver_impl[aefe405b0e9c583e]::run_compiler::{closure#0}>::{closure#1}, core[29d7d95333d708ae]::result::Result<(), rustc_span[c8a197c6866abc7b]::ErrorGuaranteed>>::{closure#0}, core[29d7d95333d708ae]::result::Result<(), rustc_span[c8a197c6866abc7b]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[29d7d95333d708ae]::result::Result<(), rustc_span[c8a197c6866abc7b]::ErrorGuaranteed>> 37: 0x733ec265e376 - <::spawn_unchecked_, rustc_driver_impl[aefe405b0e9c583e]::run_compiler::{closure#0}>::{closure#1}, core[29d7d95333d708ae]::result::Result<(), rustc_span[c8a197c6866abc7b]::ErrorGuaranteed>>::{closure#0}, core[29d7d95333d708ae]::result::Result<(), rustc_span[c8a197c6866abc7b]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[29d7d95333d708ae]::result::Result<(), rustc_span[c8a197c6866abc7b]::ErrorGuaranteed>>::{closure#2} as core[29d7d95333d708ae]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} 38: 0x733ec3d4078b - as core::ops::function::FnOnce>::call_once::hf256b52a0d01de19 at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/alloc/src/boxed.rs:2022:9 39: 0x733ec3d4078b - as core::ops::function::FnOnce>::call_once::hae70927392e12d5f at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/alloc/src/boxed.rs:2022:9 40: 0x733ec3d4078b - std::sys::pal::unix::thread::Thread::new::thread_start::h5749d225aca46043 at /rustc/97bf25c8cf6c7c97c851c6e8bc94fd0824885e6f/library/std/src/sys/pal/unix/thread.rs:108:17 41: 0x733ebd4a955a - 42: 0x733ebd526a3c - 43: 0x0 - 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: please make sure that you have updated to the latest nightly note: rustc 1.80.0-nightly (97bf25c8c 2024-05-16) running on x86_64-unknown-linux-gnu note: compiler flags: -Z validate-mir -Z dump-mir-dir=dir query stack during panic: #0 [mir_drops_elaborated_and_const_checked] elaborating drops for `test` #1 [analysis] running analysis passes on this crate end of query stack error: aborting due to 6 previous errors; 3 warnings emitted Some errors have detailed explanations: E0107, E0261, E0425, E0601, E0658. For more information about an error, try `rustc --explain E0107`. ```