Closed
Description
auto-reduced (treereduce-rust):
use std::hint::black_box;
trait Func {
type Ret: Id;
}
trait Id {
type Assoc;
}
impl Id for u32 {}
impl Id for u32 {}
impl<F: FnOnce() -> R, R: Id> Func for F {
type Ret = R;
}
fn bar() -> impl Copy + Id {
0u32
}
struct Foo<T: Func> {
_func: T,
value: Option<<<T as Func>::Ret as Id>::Assoc>,
}
fn main() {
let mut fn_def = black_box(Foo {
_func: bar,
value: None,
});
let fn_ptr = black_box(Foo {
_func: bar as fn() -> _,
value: None,
});
fn_def.value = fn_ptr.value;
}
original:
use std::hint::black_box;
trait Func {
type Ret: Id;
}
trait Id {
type Assoc;
}
impl Id for u32 {
type Assoc = u32;
}
impl Id for u32 {
type Assoc = i32;
}
impl<F: FnOnce() -> R, R: Id> Func for F {
type Ret = R;
}
#[inline(always)]
fn bar() -> impl Copy + Id {
0u32
}
struct Foo<T: Func> {
_func: T,
value: Option<<<T as Func>::Ret as Id>::Assoc>,
}
fn main() {
let mut fn_def = black_box(Foo {
_func: bar,
value: None,
});
let fn_ptr = black_box(Foo {
_func: bar as fn() -> _,
value: None,
});
fn_def.value = fn_ptr.value;
black_box(Foo {
_func: bar,
value: None,
});
}Version information
rustc 1.78.0-nightly (c7beecf3e 2024-03-05)
binary: rustc
commit-hash: c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e
commit-date: 2024-03-05
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[E0119]: conflicting implementations of trait `Id` for type `u32`
--> /tmp/icemaker_global_tempdir.Vcuzw2RFrTGI/rustc_testrunner_tmpdir_reporting.l4vSpjX9SkGn/mvce.rs:11:1
|
10 | impl Id for u32 {}
| --------------- first implementation here
11 | impl Id for u32 {}
| ^^^^^^^^^^^^^^^ conflicting implementation for `u32`
error: internal compiler error: compiler/rustc_middle/src/ty/normalize_erasing_regions.rs:187:90: Failed to normalize std::option::Option<Alias(Projection, AliasTy { args: [Alias(Projection, AliasTy { args: [Binder(fn() -> u32, [])], def_id: DefId(0:5 ~ mvce[edfe]::Func::Ret) })], def_id: DefId(0:7 ~ mvce[edfe]::Id::Assoc) })>, maybe try to call `try_normalize_erasing_regions` instead
thread 'rustc' panicked at compiler/rustc_middle/src/util/bug.rs:35:44:
Box<dyn Any>
stack backtrace:
0: 0x7f454338c754 - std::backtrace_rs::backtrace::libunwind::trace::hb3ca6a58ed9e0cab
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
1: 0x7f454338c754 - std::backtrace_rs::backtrace::trace_unsynchronized::h327ee65d2c5d0ca7
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f454338c754 - std::sys_common::backtrace::_print_fmt::h8a71adbcae5a9442
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/std/src/sys_common/backtrace.rs:68:5
3: 0x7f454338c754 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h5069361c3741e3bd
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7f45433ddb2c - core::fmt::rt::Argument::fmt::hc76ed39d719dd67d
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/core/src/fmt/rt.rs:142:9
5: 0x7f45433ddb2c - core::fmt::write_internal::h7c84a75384687dd4
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/core/src/fmt/mod.rs:1126:17
6: 0x7f4543381167 - core::fmt::write::h269ee61a459584fc
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/core/src/fmt/mod.rs:1108:67
7: 0x7f4543381167 - std::io::Write::write_fmt::h8eeafb0d3c9d6dcf
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/std/src/io/mod.rs:1846:15
8: 0x7f454338c504 - std::sys_common::backtrace::_print::h9ab859621d08b838
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/std/src/sys_common/backtrace.rs:47:5
9: 0x7f454338c504 - std::sys_common::backtrace::print::h276f59edd5cafd51
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/std/src/sys_common/backtrace.rs:34:9
10: 0x7f454338f10b - std::panicking::default_hook::{{closure}}::hb04a76c354ad4ca2
11: 0x7f454338ee67 - std::panicking::default_hook::h13aec473440bd413
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/std/src/panicking.rs:292:9
12: 0x7f45462804cc - std[8dbd9ad68df9295b]::panicking::update_hook::<alloc[3b906e9cacb41ed6]::boxed::Box<rustc_driver_impl[46903fbbfbd2d4f2]::install_ice_hook::{closure#0}>>::{closure#0}
13: 0x7f454338f822 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb8d4d85a716e33a7
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/alloc/src/boxed.rs:2030:9
14: 0x7f454338f822 - std::panicking::rust_panic_with_hook::hd5a905865100487a
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/std/src/panicking.rs:783:13
15: 0x7f45462ac9a4 - std[8dbd9ad68df9295b]::panicking::begin_panic::<rustc_errors[3b280157a1a56311]::ExplicitBug>::{closure#0}
16: 0x7f45462a98c6 - std[8dbd9ad68df9295b]::sys_common::backtrace::__rust_end_short_backtrace::<std[8dbd9ad68df9295b]::panicking::begin_panic<rustc_errors[3b280157a1a56311]::ExplicitBug>::{closure#0}, !>
17: 0x7f45462a95a6 - std[8dbd9ad68df9295b]::panicking::begin_panic::<rustc_errors[3b280157a1a56311]::ExplicitBug>
18: 0x7f45462b6131 - <rustc_errors[3b280157a1a56311]::diagnostic::BugAbort as rustc_errors[3b280157a1a56311]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
19: 0x7f454668e10c - <rustc_errors[3b280157a1a56311]::DiagCtxt>::bug::<alloc[3b906e9cacb41ed6]::string::String>
20: 0x7f454673257b - rustc_middle[ab69c4f92afbdebe]::util::bug::opt_span_bug_fmt::<rustc_span[1f98bb2c9ae0a849]::span_encoding::Span>::{closure#0}
21: 0x7f454671568a - rustc_middle[ab69c4f92afbdebe]::ty::context::tls::with_opt::<rustc_middle[ab69c4f92afbdebe]::util::bug::opt_span_bug_fmt<rustc_span[1f98bb2c9ae0a849]::span_encoding::Span>::{closure#0}, !>::{closure#0}
22: 0x7f4546715508 - rustc_middle[ab69c4f92afbdebe]::ty::context::tls::with_context_opt::<rustc_middle[ab69c4f92afbdebe]::ty::context::tls::with_opt<rustc_middle[ab69c4f92afbdebe]::util::bug::opt_span_bug_fmt<rustc_span[1f98bb2c9ae0a849]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
23: 0x7f4544c529d0 - rustc_middle[ab69c4f92afbdebe]::util::bug::bug_fmt
24: 0x7f454795e731 - <rustc_middle[ab69c4f92afbdebe]::ty::normalize_erasing_regions::NormalizeAfterErasingRegionsFolder as rustc_type_ir[5a0133e54bb7004d]::fold::TypeFolder<rustc_middle[ab69c4f92afbdebe]::ty::context::TyCtxt>>::fold_ty
25: 0x7f4547a359d7 - <rustc_mir_dataflow[4dca6c6bfb913a17]::elaborate_drops::DropCtxt<rustc_mir_transform[df1dd399e1c2956f]::elaborate_drops::Elaborator>>::elaborate_drop
26: 0x7f454478434c - <rustc_mir_transform[df1dd399e1c2956f]::elaborate_drops::ElaborateDrops as rustc_middle[ab69c4f92afbdebe]::mir::MirPass>::run_pass
27: 0x7f454761400f - rustc_mir_transform[df1dd399e1c2956f]::pass_manager::run_passes_inner
28: 0x7f4547d25bc6 - rustc_mir_transform[df1dd399e1c2956f]::mir_drops_elaborated_and_const_checked
29: 0x7f4547d254e1 - rustc_query_impl[6d84502f9670cd53]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[6d84502f9670cd53]::query_impl::mir_drops_elaborated_and_const_checked::dynamic_query::{closure#2}::{closure#0}, rustc_middle[ab69c4f92afbdebe]::query::erase::Erased<[u8; 8usize]>>
30: 0x7f45477474b8 - rustc_query_system[2567e3f9f30a9009]::query::plumbing::try_execute_query::<rustc_query_impl[6d84502f9670cd53]::DynamicConfig<rustc_query_system[2567e3f9f30a9009]::query::caches::VecCache<rustc_span[1f98bb2c9ae0a849]::def_id::LocalDefId, rustc_middle[ab69c4f92afbdebe]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[6d84502f9670cd53]::plumbing::QueryCtxt, false>
31: 0x7f4547746d8c - rustc_query_impl[6d84502f9670cd53]::query_impl::mir_drops_elaborated_and_const_checked::get_query_non_incr::__rust_end_short_backtrace
32: 0x7f45482e893a - rustc_interface[4f9ebc0114c1dc52]::passes::analysis
33: 0x7f45482e8119 - rustc_query_impl[6d84502f9670cd53]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[6d84502f9670cd53]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[ab69c4f92afbdebe]::query::erase::Erased<[u8; 1usize]>>
34: 0x7f4548317b25 - rustc_query_system[2567e3f9f30a9009]::query::plumbing::try_execute_query::<rustc_query_impl[6d84502f9670cd53]::DynamicConfig<rustc_query_system[2567e3f9f30a9009]::query::caches::SingleCache<rustc_middle[ab69c4f92afbdebe]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[6d84502f9670cd53]::plumbing::QueryCtxt, false>
35: 0x7f4548317889 - rustc_query_impl[6d84502f9670cd53]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
36: 0x7f4548326842 - rustc_interface[4f9ebc0114c1dc52]::interface::run_compiler::<core[8c889010effea61c]::result::Result<(), rustc_span[1f98bb2c9ae0a849]::ErrorGuaranteed>, rustc_driver_impl[46903fbbfbd2d4f2]::run_compiler::{closure#0}>::{closure#0}
37: 0x7f45485f0446 - std[8dbd9ad68df9295b]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[4f9ebc0114c1dc52]::util::run_in_thread_with_globals<rustc_interface[4f9ebc0114c1dc52]::util::run_in_thread_pool_with_globals<rustc_interface[4f9ebc0114c1dc52]::interface::run_compiler<core[8c889010effea61c]::result::Result<(), rustc_span[1f98bb2c9ae0a849]::ErrorGuaranteed>, rustc_driver_impl[46903fbbfbd2d4f2]::run_compiler::{closure#0}>::{closure#0}, core[8c889010effea61c]::result::Result<(), rustc_span[1f98bb2c9ae0a849]::ErrorGuaranteed>>::{closure#0}, core[8c889010effea61c]::result::Result<(), rustc_span[1f98bb2c9ae0a849]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[8c889010effea61c]::result::Result<(), rustc_span[1f98bb2c9ae0a849]::ErrorGuaranteed>>
38: 0x7f45485f0272 - <<std[8dbd9ad68df9295b]::thread::Builder>::spawn_unchecked_<rustc_interface[4f9ebc0114c1dc52]::util::run_in_thread_with_globals<rustc_interface[4f9ebc0114c1dc52]::util::run_in_thread_pool_with_globals<rustc_interface[4f9ebc0114c1dc52]::interface::run_compiler<core[8c889010effea61c]::result::Result<(), rustc_span[1f98bb2c9ae0a849]::ErrorGuaranteed>, rustc_driver_impl[46903fbbfbd2d4f2]::run_compiler::{closure#0}>::{closure#0}, core[8c889010effea61c]::result::Result<(), rustc_span[1f98bb2c9ae0a849]::ErrorGuaranteed>>::{closure#0}, core[8c889010effea61c]::result::Result<(), rustc_span[1f98bb2c9ae0a849]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[8c889010effea61c]::result::Result<(), rustc_span[1f98bb2c9ae0a849]::ErrorGuaranteed>>::{closure#1} as core[8c889010effea61c]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
39: 0x7f4543398f85 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h24c0cfbfedc1fa18
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/alloc/src/boxed.rs:2016:9
40: 0x7f4543398f85 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h4b4e456aeb7e2c2b
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/alloc/src/boxed.rs:2016:9
41: 0x7f4543398f85 - std::sys::pal::unix::thread::Thread::new::thread_start::hd6ad0feb9d6b2058
at /rustc/c7beecf3e3cef7a8226a99aec4e4f6bfc114ba8e/library/std/src/sys/pal/unix/thread.rs:108:17
42: 0x7f454318055a - <unknown>
43: 0x7f45431fda3c - <unknown>
44: 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 (c7beecf3e 2024-03-05) running on x86_64-unknown-linux-gnu
query stack during panic:
#0 [mir_drops_elaborated_and_const_checked] elaborating drops for `main`
#1 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0119`.