Open
Description
auto-reduced (treereduce-rust):
use std::ops::Add;
pub trait TimesTwo
where
*const Self: Add,
{
const unsafe fn t2_ptr(slf: *const Self) -> <*const Self as Add>::Output {
slf + slf
}
}
original:
use std::ops::Add;
pub trait TimesTwo
where *const Self: Add<*const Self>,
{
const unsafe extern "C-unwind" fn t2_ptr(slf: *const Self)
-> <*const Self as Add<*const Self>>::Output {
slf + slf
}
}
fn main(){}
Version information
rustc 1.87.0-nightly (ce36a966c 2025-02-17)
binary: rustc
commit-hash: ce36a966c79e109dabeef7a47fe68e5294c6d71e
commit-date: 2025-02-17
host: x86_64-unknown-linux-gnu
release: 1.87.0-nightly
LLVM version: 20.1.0
Possibly related line of code:
rust/compiler/rustc_const_eval/src/check_consts/check.rs
Lines 708 to 720 in ce36a96
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc -Zincremental-verify-ich=yes -Cincremental=<dir> -Cdebuginfo=2 -Clink-dead-code=true -Zvalidate-mir --edition=2024
Program output
error[E0379]: functions in traits cannot be declared const
--> /tmp/icemaker_global_tempdir.UMhzAAeJ1wJN/rustc_testrunner_tmpdir_reporting.nEQdJywdRhWw/mvce.rs:7:5
|
7 | const unsafe fn t2_ptr(slf: *const Self) -> <*const Self as Add>::Output {
| ^^^^^-
| |
| functions in traits cannot be const
| help: remove the `const`
error[E0601]: `main` function not found in crate `mvce`
--> /tmp/icemaker_global_tempdir.UMhzAAeJ1wJN/rustc_testrunner_tmpdir_reporting.nEQdJywdRhWw/mvce.rs:10:2
|
10 | }
| ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.UMhzAAeJ1wJN/rustc_testrunner_tmpdir_reporting.nEQdJywdRhWw/mvce.rs`
thread 'rustc' panicked at compiler/rustc_const_eval/src/check_consts/check.rs:714:21:
assertion `left matches right` failed
left: Add
right: BinOp::Eq | BinOp::Ne | BinOp::Le | BinOp::Lt | BinOp::Ge | BinOp::Gt |
BinOp::Offset
stack backtrace:
0: 0x780f52799e40 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h3841cd57ff2ecd73
1: 0x780f530148ac - core::fmt::write::h1e3520bf56740af3
2: 0x780f540318d1 - std::io::Write::write_fmt::hba9e4167b3001b26
3: 0x780f52799ca2 - std::sys::backtrace::BacktraceLock::print::h4cef63a231b9b903
4: 0x780f5279c4a6 - std::panicking::default_hook::{{closure}}::h42a071c1742d1486
5: 0x780f5279c084 - std::panicking::default_hook::hb623603f8ca8d5a9
6: 0x780f518e571b - std[3b75b760e1909bee]::panicking::update_hook::<alloc[fee51eceb6acdb2a]::boxed::Box<rustc_driver_impl[345723d7f8fea549]::install_ice_hook::{closure#1}>>::{closure#0}
7: 0x780f5279cd53 - std::panicking::rust_panic_with_hook::h4a78a56a08a0281e
8: 0x780f5279ca4a - std::panicking::begin_panic_handler::{{closure}}::h003b3348edc396e0
9: 0x780f5279a309 - std::sys::backtrace::__rust_end_short_backtrace::h40301e4d631caaec
10: 0x780f5279c70d - rust_begin_unwind
11: 0x780f4f4459e0 - core::panicking::panic_fmt::hf9c35d88d19a7b20
12: 0x780f5130ad7b - core::panicking::assert_failed_inner::h948e8514cfb7919e
13: 0x780f5183285b - core[22e5dcc507c1ce60]::panicking::assert_matches_failed::<&rustc_middle[8f0bb18145f914db]::mir::syntax::BinOp>
14: 0x780f53b57332 - <rustc_const_eval[24ba1ca4ddcda3d4]::check_consts::check::Checker as rustc_middle[8f0bb18145f914db]::mir::visit::Visitor>::visit_basic_block_data
15: 0x780f53b55a92 - <rustc_const_eval[24ba1ca4ddcda3d4]::check_consts::check::Checker>::check_body
16: 0x780f53b59e43 - rustc_mir_transform[f79e9594970959e5]::mir_const_qualif
17: 0x780f53b59d2f - rustc_query_impl[1dc7e25d3505b9db]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[1dc7e25d3505b9db]::query_impl::mir_const_qualif::dynamic_query::{closure#2}::{closure#0}, rustc_middle[8f0bb18145f914db]::query::erase::Erased<[u8; 4usize]>>
18: 0x780f53b57cd1 - rustc_query_system[923c01520de53f9e]::query::plumbing::try_execute_query::<rustc_query_impl[1dc7e25d3505b9db]::DynamicConfig<rustc_query_system[923c01520de53f9e]::query::caches::DefIdCache<rustc_middle[8f0bb18145f914db]::query::erase::Erased<[u8; 4usize]>>, false, false, false>, rustc_query_impl[1dc7e25d3505b9db]::plumbing::QueryCtxt, true>
19: 0x780f53b5768a - rustc_query_impl[1dc7e25d3505b9db]::query_impl::mir_const_qualif::get_query_incr::__rust_end_short_backtrace
20: 0x780f53b58e05 - rustc_middle[8f0bb18145f914db]::query::plumbing::query_get_at::<rustc_query_system[923c01520de53f9e]::query::caches::DefIdCache<rustc_middle[8f0bb18145f914db]::query::erase::Erased<[u8; 4usize]>>>
21: 0x780f505762d6 - rustc_mir_transform[f79e9594970959e5]::mir_promoted
22: 0x780f535369d2 - rustc_query_impl[1dc7e25d3505b9db]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[1dc7e25d3505b9db]::query_impl::mir_promoted::dynamic_query::{closure#2}::{closure#0}, rustc_middle[8f0bb18145f914db]::query::erase::Erased<[u8; 16usize]>>
23: 0x780f535358ec - rustc_query_system[923c01520de53f9e]::query::plumbing::try_execute_query::<rustc_query_impl[1dc7e25d3505b9db]::DynamicConfig<rustc_data_structures[f62cbf444a619353]::vec_cache::VecCache<rustc_span[75e5c439b5acee8]::def_id::LocalDefId, rustc_middle[8f0bb18145f914db]::query::erase::Erased<[u8; 16usize]>, rustc_query_system[923c01520de53f9e]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[1dc7e25d3505b9db]::plumbing::QueryCtxt, true>
24: 0x780f53534f53 - rustc_query_impl[1dc7e25d3505b9db]::query_impl::mir_promoted::get_query_incr::__rust_end_short_backtrace
25: 0x780f54159d6e - rustc_query_impl[1dc7e25d3505b9db]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[1dc7e25d3505b9db]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[8f0bb18145f914db]::query::erase::Erased<[u8; 8usize]>>
26: 0x780f533afed3 - rustc_query_system[923c01520de53f9e]::query::plumbing::try_execute_query::<rustc_query_impl[1dc7e25d3505b9db]::DynamicConfig<rustc_data_structures[f62cbf444a619353]::vec_cache::VecCache<rustc_span[75e5c439b5acee8]::def_id::LocalDefId, rustc_middle[8f0bb18145f914db]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[923c01520de53f9e]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[1dc7e25d3505b9db]::plumbing::QueryCtxt, true>
27: 0x780f53371e33 - rustc_query_impl[1dc7e25d3505b9db]::query_impl::mir_borrowck::get_query_incr::__rust_end_short_backtrace
28: 0x780f5335fefa - rustc_interface[d53afbea1eb411d7]::passes::run_required_analyses
29: 0x780f5402d95e - rustc_interface[d53afbea1eb411d7]::passes::analysis
30: 0x780f5402d92f - rustc_query_impl[1dc7e25d3505b9db]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[1dc7e25d3505b9db]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[8f0bb18145f914db]::query::erase::Erased<[u8; 0usize]>>
31: 0x780f54029345 - rustc_query_system[923c01520de53f9e]::query::plumbing::try_execute_query::<rustc_query_impl[1dc7e25d3505b9db]::DynamicConfig<rustc_query_system[923c01520de53f9e]::query::caches::SingleCache<rustc_middle[8f0bb18145f914db]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[1dc7e25d3505b9db]::plumbing::QueryCtxt, true>
32: 0x780f54028cbd - rustc_query_impl[1dc7e25d3505b9db]::query_impl::analysis::get_query_incr::__rust_end_short_backtrace
33: 0x780f540daf3c - rustc_interface[d53afbea1eb411d7]::passes::create_and_enter_global_ctxt::<core[22e5dcc507c1ce60]::option::Option<rustc_interface[d53afbea1eb411d7]::queries::Linker>, rustc_driver_impl[345723d7f8fea549]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}
34: 0x780f540557e2 - rustc_interface[d53afbea1eb411d7]::interface::run_compiler::<(), rustc_driver_impl[345723d7f8fea549]::run_compiler::{closure#0}>::{closure#1}
35: 0x780f53fd5898 - std[3b75b760e1909bee]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[d53afbea1eb411d7]::util::run_in_thread_with_globals<rustc_interface[d53afbea1eb411d7]::util::run_in_thread_pool_with_globals<rustc_interface[d53afbea1eb411d7]::interface::run_compiler<(), rustc_driver_impl[345723d7f8fea549]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
36: 0x780f53fd5574 - <<std[3b75b760e1909bee]::thread::Builder>::spawn_unchecked_<rustc_interface[d53afbea1eb411d7]::util::run_in_thread_with_globals<rustc_interface[d53afbea1eb411d7]::util::run_in_thread_pool_with_globals<rustc_interface[d53afbea1eb411d7]::interface::run_compiler<(), rustc_driver_impl[345723d7f8fea549]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[22e5dcc507c1ce60]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
37: 0x780f53fd4d2b - std::sys::pal::unix::thread::Thread::new::thread_start::h9b930113dc9df217
38: 0x780f4e0a339d - <unknown>
39: 0x780f4e12849c - <unknown>
40: 0x0 - <unknown>
error: 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: please make sure that you have updated to the latest nightly
note: rustc 1.87.0-nightly (ce36a966c 2025-02-17) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z incremental-verify-ich=yes -C incremental=[REDACTED] -C debuginfo=2 -C link-dead-code=true -Z validate-mir
query stack during panic:
#0 [mir_const_qualif] const checking `TimesTwo::t2_ptr`
#1 [mir_promoted] promoting constants in MIR for `TimesTwo::t2_ptr`
#2 [mir_borrowck] borrow-checking `TimesTwo::t2_ptr`
#3 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0379, E0601.
For more information about an error, try `rustc --explain E0379`.