Closed
Description
auto-reduced (treereduce-rust):
trait Bar {
type Type;
}
struct Foo<'a>(&'a ());
impl<'a> Bar for Foo<'f> {}
fn test()
where
for<'a> <Foo<'a> as Bar>::Type: Sized,
{
}
original:
//@ check-pass
trait Bar {
type Type;
}
struct Foo<'a>(&'a ());
impl<'a> Bar for Foo<'f> {
type Type = ();
}
fn func<'a>(_: <Foo<'a> as Bar>::Type) {}
fn assert_is_func<A>(_: fn(A)) {}
fn test()
where
for<'a> <Foo<'a> as Bar>::Type: Sized,
{
wrapper(func);
}
fn main() {}Version information
rustc 1.78.0-nightly (f8131a48a 2024-02-21)
binary: rustc
commit-hash: f8131a48a46ac3bc8a3d0fe0477055b132cffdc3
commit-date: 2024-02-21
host: x86_64-unknown-linux-gnu
release: 1.78.0-nightly
LLVM version: 18.1.0
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc
Program output
error[E0261]: use of undeclared lifetime name `'f`
--> /tmp/icemaker_global_tempdir.Qz3b41LbdD6V/rustc_testrunner_tmpdir_reporting.lrX8blRIpTCX/mvce.rs:5:22
|
5 | impl<'a> Bar for Foo<'f> {}
| - ^^ undeclared lifetime
| |
| help: consider introducing lifetime `'f` here: `'f,`
error[E0601]: `main` function not found in crate `mvce`
--> /tmp/icemaker_global_tempdir.Qz3b41LbdD6V/rustc_testrunner_tmpdir_reporting.lrX8blRIpTCX/mvce.rs:11:2
|
11 | }
| ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.Qz3b41LbdD6V/rustc_testrunner_tmpdir_reporting.lrX8blRIpTCX/mvce.rs`
error[E0046]: not all trait items implemented, missing: `Type`
--> /tmp/icemaker_global_tempdir.Qz3b41LbdD6V/rustc_testrunner_tmpdir_reporting.lrX8blRIpTCX/mvce.rs:5:1
|
2 | type Type;
| --------- `Type` from trait
...
5 | impl<'a> Bar for Foo<'f> {}
| ^^^^^^^^^^^^^^^^^^^^^^^^ missing `Type` in implementation
error: internal compiler error: failed region resolution while normalizing ParamEnv { caller_bounds: [Binder { value: TraitPredicate(<<Foo<'a> as Bar>::Type as std::marker::Sized>, polarity:Positive), bound_vars: [Region(BrNamed(DefId(0:12 ~ mvce[8c01]::test::'a), 'a))] }], reveal: UserFacing }: [ConcreteFailure(Subtype(TypeTrace { cause: ObligationCause { span: /tmp/icemaker_global_tempdir.Qz3b41LbdD6V/rustc_testrunner_tmpdir_reporting.lrX8blRIpTCX/mvce.rs:7:1: 9:43 (#0), body_id: DefId(0:11 ~ mvce[8c01]::test), code: MatchImpl(ObligationCause { span: /tmp/icemaker_global_tempdir.Qz3b41LbdD6V/rustc_testrunner_tmpdir_reporting.lrX8blRIpTCX/mvce.rs:7:1: 9:43 (#0), body_id: DefId(0:11 ~ mvce[8c01]::test), code: MiscObligation }, DefId(0:9 ~ mvce[8c01]::{impl#0})) }, values: PolyTraitRefs(ExpectedFound { expected: Binder { value: <Foo<'a> as Bar>, bound_vars: [] }, found: Binder { value: <Foo<'_> as Bar>, bound_vars: [] } }) }), ReError, RePlaceholder(!1_BoundRegion { var: 0, kind: BrNamed(DefId(0:12 ~ mvce[8c01]::test::'a), 'a) }))]
--> /tmp/icemaker_global_tempdir.Qz3b41LbdD6V/rustc_testrunner_tmpdir_reporting.lrX8blRIpTCX/mvce.rs:7:1
|
7 | / fn test()
8 | | where
9 | | for<'a> <Foo<'a> as Bar>::Type: Sized,
| |__________________________________________^
thread 'rustc' panicked at compiler/rustc_trait_selection/src/traits/mod.rs:177:19:
Box<dyn Any>
stack backtrace:
0: 0x7f6d36226af6 - std::backtrace_rs::backtrace::libunwind::trace::hbec2edc838b433e2
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
1: 0x7f6d36226af6 - std::backtrace_rs::backtrace::trace_unsynchronized::h88c30257ee0dd166
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f6d36226af6 - std::sys_common::backtrace::_print_fmt::h9176654d509e3088
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/sys_common/backtrace.rs:68:5
3: 0x7f6d36226af6 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h671feaee1776bf19
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7f6d36277a7c - core::fmt::rt::Argument::fmt::h59605c83ae32d935
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/core/src/fmt/rt.rs:142:9
5: 0x7f6d36277a7c - core::fmt::write::hf7af8dfcfd20db5b
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/core/src/fmt/mod.rs:1120:17
6: 0x7f6d3621b4bf - std::io::Write::write_fmt::h92a5dbf489025e71
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/io/mod.rs:1846:15
7: 0x7f6d362268a4 - std::sys_common::backtrace::_print::h00080302d23998ae
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7f6d362268a4 - std::sys_common::backtrace::print::h6b23124445400245
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7f6d362295eb - std::panicking::default_hook::{{closure}}::hd67b2f9d36675a28
10: 0x7f6d36229339 - std::panicking::default_hook::h10a39ef11c714e42
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/panicking.rs:292:9
11: 0x7f6d32e7a94c - std[5a8e7f94216a9138]::panicking::update_hook::<alloc[e14ab1f516d287ab]::boxed::Box<rustc_driver_impl[e279e4f1fedd9109]::install_ice_hook::{closure#0}>>::{closure#0}
12: 0x7f6d36229d50 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h37ba37dc48823c1d
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/alloc/src/boxed.rs:2030:9
13: 0x7f6d36229d50 - std::panicking::rust_panic_with_hook::he3e3bc7c345bf54b
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/panicking.rs:786:13
14: 0x7f6d32ea7524 - std[5a8e7f94216a9138]::panicking::begin_panic::<rustc_errors[34364e5c712fab73]::ExplicitBug>::{closure#0}
15: 0x7f6d32ea4176 - std[5a8e7f94216a9138]::sys_common::backtrace::__rust_end_short_backtrace::<std[5a8e7f94216a9138]::panicking::begin_panic<rustc_errors[34364e5c712fab73]::ExplicitBug>::{closure#0}, !>
16: 0x7f6d32e9f936 - std[5a8e7f94216a9138]::panicking::begin_panic::<rustc_errors[34364e5c712fab73]::ExplicitBug>
17: 0x7f6d31817631 - <rustc_errors[34364e5c712fab73]::diagnostic::BugAbort as rustc_errors[34364e5c712fab73]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
18: 0x7f6d31e00316 - rustc_trait_selection[f311605eeacf2c8d]::traits::do_normalize_predicates
19: 0x7f6d31ded59e - rustc_trait_selection[f311605eeacf2c8d]::traits::normalize_param_env_or_error
20: 0x7f6d34550a80 - rustc_ty_utils[d35b0e036186ec50]::ty::param_env
21: 0x7f6d345506f9 - rustc_query_impl[9d4c51777e2bb749]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[9d4c51777e2bb749]::query_impl::param_env::dynamic_query::{closure#2}::{closure#0}, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 8usize]>>
22: 0x7f6d34274da1 - rustc_query_system[9b2ccfe41ae3bb1b]::query::plumbing::try_execute_query::<rustc_query_impl[9d4c51777e2bb749]::DynamicConfig<rustc_query_system[9b2ccfe41ae3bb1b]::query::caches::DefIdCache<rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[9d4c51777e2bb749]::plumbing::QueryCtxt, false>
23: 0x7f6d342747e1 - rustc_query_impl[9d4c51777e2bb749]::query_impl::param_env::get_query_non_incr::__rust_end_short_backtrace
24: 0x7f6d344262dc - rustc_middle[446dd094ad85939e]::query::plumbing::query_get_at::<rustc_query_system[9b2ccfe41ae3bb1b]::query::caches::DefIdCache<rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 8usize]>>>
25: 0x7f6d34350d3c - rustc_hir_analysis[71d4294717f7f2b7]::check::wfcheck::check_item_fn
26: 0x7f6d348fce30 - rustc_hir_analysis[71d4294717f7f2b7]::check::wfcheck::check_well_formed
27: 0x7f6d348fbd1d - rustc_query_impl[9d4c51777e2bb749]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[9d4c51777e2bb749]::query_impl::check_well_formed::dynamic_query::{closure#2}::{closure#0}, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 1usize]>>
28: 0x7f6d348fb3ff - rustc_query_system[9b2ccfe41ae3bb1b]::query::plumbing::try_execute_query::<rustc_query_impl[9d4c51777e2bb749]::DynamicConfig<rustc_query_system[9b2ccfe41ae3bb1b]::query::caches::VecCache<rustc_hir[170b9793d794ea06]::hir_id::OwnerId, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[9d4c51777e2bb749]::plumbing::QueryCtxt, false>
29: 0x7f6d348fb17f - rustc_query_impl[9d4c51777e2bb749]::query_impl::check_well_formed::get_query_non_incr::__rust_end_short_backtrace
30: 0x7f6d348f9041 - rustc_hir_analysis[71d4294717f7f2b7]::check::wfcheck::check_mod_type_wf
31: 0x7f6d348f8f89 - rustc_query_impl[9d4c51777e2bb749]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[9d4c51777e2bb749]::query_impl::check_mod_type_wf::dynamic_query::{closure#2}::{closure#0}, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 1usize]>>
32: 0x7f6d34bac270 - rustc_query_system[9b2ccfe41ae3bb1b]::query::plumbing::try_execute_query::<rustc_query_impl[9d4c51777e2bb749]::DynamicConfig<rustc_query_system[9b2ccfe41ae3bb1b]::query::caches::DefaultCache<rustc_span[adb133ac03280fc1]::def_id::LocalModDefId, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[9d4c51777e2bb749]::plumbing::QueryCtxt, false>
33: 0x7f6d34babf7f - rustc_query_impl[9d4c51777e2bb749]::query_impl::check_mod_type_wf::get_query_non_incr::__rust_end_short_backtrace
34: 0x7f6d34bad2bc - rustc_middle[446dd094ad85939e]::query::plumbing::query_ensure_error_guaranteed::<rustc_query_system[9b2ccfe41ae3bb1b]::query::caches::DefaultCache<rustc_span[adb133ac03280fc1]::def_id::LocalModDefId, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 1usize]>>, ()>
35: 0x7f6d34badaf1 - rustc_hir_analysis[71d4294717f7f2b7]::check_crate
36: 0x7f6d34ca2dd3 - rustc_interface[7ca501d7f8f3a34f]::passes::analysis
37: 0x7f6d34ca2a29 - rustc_query_impl[9d4c51777e2bb749]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[9d4c51777e2bb749]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 1usize]>>
38: 0x7f6d34f3d4a5 - rustc_query_system[9b2ccfe41ae3bb1b]::query::plumbing::try_execute_query::<rustc_query_impl[9d4c51777e2bb749]::DynamicConfig<rustc_query_system[9b2ccfe41ae3bb1b]::query::caches::SingleCache<rustc_middle[446dd094ad85939e]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[9d4c51777e2bb749]::plumbing::QueryCtxt, false>
39: 0x7f6d34f3d209 - rustc_query_impl[9d4c51777e2bb749]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
40: 0x7f6d34f4c719 - rustc_interface[7ca501d7f8f3a34f]::interface::run_compiler::<core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>, rustc_driver_impl[e279e4f1fedd9109]::run_compiler::{closure#0}>::{closure#0}
41: 0x7f6d351be705 - std[5a8e7f94216a9138]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[7ca501d7f8f3a34f]::util::run_in_thread_with_globals<rustc_interface[7ca501d7f8f3a34f]::util::run_in_thread_pool_with_globals<rustc_interface[7ca501d7f8f3a34f]::interface::run_compiler<core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>, rustc_driver_impl[e279e4f1fedd9109]::run_compiler::{closure#0}>::{closure#0}, core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>>::{closure#0}, core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>>
42: 0x7f6d351be532 - <<std[5a8e7f94216a9138]::thread::Builder>::spawn_unchecked_<rustc_interface[7ca501d7f8f3a34f]::util::run_in_thread_with_globals<rustc_interface[7ca501d7f8f3a34f]::util::run_in_thread_pool_with_globals<rustc_interface[7ca501d7f8f3a34f]::interface::run_compiler<core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>, rustc_driver_impl[e279e4f1fedd9109]::run_compiler::{closure#0}>::{closure#0}, core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>>::{closure#0}, core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[85b4fd477ce5bb21]::result::Result<(), rustc_span[adb133ac03280fc1]::ErrorGuaranteed>>::{closure#1} as core[85b4fd477ce5bb21]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
43: 0x7f6d36233725 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h1bff3efb61c3fa6b
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/alloc/src/boxed.rs:2016:9
44: 0x7f6d36233725 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h83141cf549dced8a
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/alloc/src/boxed.rs:2016:9
45: 0x7f6d36233725 - std::sys::pal::unix::thread::Thread::new::thread_start::hbe9287fdd7c325bc
at /rustc/f8131a48a46ac3bc8a3d0fe0477055b132cffdc3/library/std/src/sys/pal/unix/thread.rs:108:17
46: 0x7f6d2feaa9eb - <unknown>
47: 0x7f6d2ff2e7cc - <unknown>
48: 0x0 - <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 1.78.0-nightly (f8131a48a 2024-02-21) running on x86_64-unknown-linux-gnu
query stack during panic:
#0 [param_env] computing normalized predicates of `test`
#1 [check_well_formed] checking that `test` is well-formed
#2 [check_mod_type_wf] checking that types are well-formed in top-level module
#3 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 4 previous errors
Some errors have detailed explanations: E0046, E0261, E0601.
For more information about an error, try `rustc --explain E0046`.
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