Closed
Description
auto-reduced (treereduce-rust):
#![feature(effects, const_trait_impl)]
const fn foo(xB: ~const From<_>) {}
original:
#![feature(effects, const_trait_impl)]
const fn foo<>(xB: ~const From<_>) {}
pub fn main() {}Version information
rustc 1.77.0-nightly (e51e98dde 2023-12-31)
binary: rustc
commit-hash: e51e98dde6a60637b6a71b8105245b629ac3fe77
commit-date: 2023-12-31
host: x86_64-unknown-linux-gnu
release: 1.77.0-nightly
LLVM version: 17.0.6
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc
Program output
error: `~const` is not allowed here
--> /tmp/icemaker_global_tempdir.2kROOgaqeeAJ/rustc_testrunner_tmpdir_reporting.debhZaZQZZDf/mvce.rs:3:18
|
3 | const fn foo(xB: ~const From<_>) {}
| ^^^^^^
|
= note: trait objects cannot have `~const` trait bounds
error[E0601]: `main` function not found in crate `mvce`
--> /tmp/icemaker_global_tempdir.2kROOgaqeeAJ/rustc_testrunner_tmpdir_reporting.debhZaZQZZDf/mvce.rs:3:36
|
3 | const fn foo(xB: ~const From<_>) {}
| ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.2kROOgaqeeAJ/rustc_testrunner_tmpdir_reporting.debhZaZQZZDf/mvce.rs`
warning: trait objects without an explicit `dyn` are deprecated
--> /tmp/icemaker_global_tempdir.2kROOgaqeeAJ/rustc_testrunner_tmpdir_reporting.debhZaZQZZDf/mvce.rs:3:18
|
3 | const fn foo(xB: ~const From<_>) {}
| ^^^^^^^^^^^^^^
|
= warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
= note: `#[warn(bare_trait_objects)]` on by default
help: use `dyn`
|
3 | const fn foo(xB: dyn ~const From<_>) {}
| +++
thread 'rustc' panicked at compiler/rustc_hir_analysis/src/astconv/generics.rs:377:25:
assertion `left == right` failed
left: "constant"
right: "lifetime"
stack backtrace:
0: 0x7f10185f3946 - std::backtrace_rs::backtrace::libunwind::trace::h44f4ca7c442c0986
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
1: 0x7f10185f3946 - std::backtrace_rs::backtrace::trace_unsynchronized::h8e72beef8f98799e
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f10185f3946 - std::sys_common::backtrace::_print_fmt::had1f7322c7191a83
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/std/src/sys_common/backtrace.rs:68:5
3: 0x7f10185f3946 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc02075f68ac68e83
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7f1018646060 - core::fmt::rt::Argument::fmt::h4fb797bf569c9381
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/core/src/fmt/rt.rs:142:9
5: 0x7f1018646060 - core::fmt::write::h6f1ea15fe9368d17
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/core/src/fmt/mod.rs:1120:17
6: 0x7f10185e736f - std::io::Write::write_fmt::haaa4143b58137630
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/std/src/io/mod.rs:1810:15
7: 0x7f10185f3724 - std::sys_common::backtrace::_print::h16f1f390d8dff6aa
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7f10185f3724 - std::sys_common::backtrace::print::h7a4cfc718891723c
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7f10185f64b7 - std::panicking::default_hook::{{closure}}::h66f09592313f4ce8
10: 0x7f10185f6219 - std::panicking::default_hook::he45e0a376ce42f7d
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/std/src/panicking.rs:292:9
11: 0x7f101536605c - std[59bbd359e4a0812d]::panicking::update_hook::<alloc[9e8bbef5278c9f16]::boxed::Box<rustc_driver_impl[f5f02e8ab7f89dcf]::install_ice_hook::{closure#0}>>::{closure#0}
12: 0x7f10185f6c06 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h0ebdda5c503ff158
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/alloc/src/boxed.rs:2029:9
13: 0x7f10185f6c06 - std::panicking::rust_panic_with_hook::h4f38919015b1c60f
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/std/src/panicking.rs:783:13
14: 0x7f10185f6952 - std::panicking::begin_panic_handler::{{closure}}::h6e933e94ded3024f
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/std/src/panicking.rs:657:13
15: 0x7f10185f3e46 - std::sys_common::backtrace::__rust_end_short_backtrace::h4efef00f0bd07d56
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/std/src/sys_common/backtrace.rs:171:18
16: 0x7f10185f66b0 - rust_begin_unwind
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/std/src/panicking.rs:645:5
17: 0x7f1018642765 - core::panicking::panic_fmt::h3f2350d70561f7cb
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/core/src/panicking.rs:72:14
18: 0x7f1018642cfb - core::panicking::assert_failed_inner::h44ef086644106b14
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/core/src/panicking.rs:342:17
19: 0x7f101543046b - core[f50a4b4ddb6878bb]::panicking::assert_failed::<&str, &str>
20: 0x7f1016f84212 - <dyn rustc_hir_analysis[239f966c4ce807be]::astconv::AstConv>::instantiate_poly_trait_ref
21: 0x7f1016f237e8 - <dyn rustc_hir_analysis[239f966c4ce807be]::astconv::AstConv>::conv_object_ty_poly_trait_ref
22: 0x7f10167f9cd4 - <dyn rustc_hir_analysis[239f966c4ce807be]::astconv::AstConv>::ast_ty_to_ty_inner
23: 0x7f10167f6db0 - <dyn rustc_hir_analysis[239f966c4ce807be]::astconv::AstConv>::ty_of_fn
24: 0x7f10167f5ee6 - rustc_hir_analysis[239f966c4ce807be]::collect::infer_return_ty_for_fn_sig
25: 0x7f10167f517c - rustc_hir_analysis[239f966c4ce807be]::collect::fn_sig
26: 0x7f10167ee5c1 - rustc_query_impl[6eb9e4a88fa21aca]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[6eb9e4a88fa21aca]::query_impl::fn_sig::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7d80ff9c88f366f3]::query::erase::Erased<[u8; 24usize]>>
27: 0x7f10167ee591 - <rustc_query_impl[6eb9e4a88fa21aca]::query_impl::fn_sig::dynamic_query::{closure#2} as core[f50a4b4ddb6878bb]::ops::function::FnOnce<(rustc_middle[7d80ff9c88f366f3]::ty::context::TyCtxt, rustc_span[44814e3eac9e4a35]::def_id::DefId)>>::call_once
28: 0x7f10167edbd3 - rustc_query_system[cdab7429fb42dda2]::query::plumbing::try_execute_query::<rustc_query_impl[6eb9e4a88fa21aca]::DynamicConfig<rustc_query_system[cdab7429fb42dda2]::query::caches::DefaultCache<rustc_span[44814e3eac9e4a35]::def_id::DefId, rustc_middle[7d80ff9c88f366f3]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[6eb9e4a88fa21aca]::plumbing::QueryCtxt, false>
29: 0x7f10167ed5e3 - rustc_query_impl[6eb9e4a88fa21aca]::query_impl::fn_sig::get_query_non_incr::__rust_end_short_backtrace
30: 0x7f1016aba284 - <rustc_hir_analysis[239f966c4ce807be]::collect::CollectItemTypesVisitor as rustc_hir[556501f2b35f222e]::intravisit::Visitor>::visit_item
31: 0x7f1016ab82bd - rustc_hir_analysis[239f966c4ce807be]::collect::collect_mod_item_types
32: 0x7f1016ab8251 - rustc_query_impl[6eb9e4a88fa21aca]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[6eb9e4a88fa21aca]::query_impl::collect_mod_item_types::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7d80ff9c88f366f3]::query::erase::Erased<[u8; 0usize]>>
33: 0x7f1017218dbb - rustc_query_system[cdab7429fb42dda2]::query::plumbing::try_execute_query::<rustc_query_impl[6eb9e4a88fa21aca]::DynamicConfig<rustc_query_system[cdab7429fb42dda2]::query::caches::DefaultCache<rustc_span[44814e3eac9e4a35]::def_id::LocalModDefId, rustc_middle[7d80ff9c88f366f3]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[6eb9e4a88fa21aca]::plumbing::QueryCtxt, false>
34: 0x7f10172188d7 - rustc_query_impl[6eb9e4a88fa21aca]::query_impl::collect_mod_item_types::get_query_non_incr::__rust_end_short_backtrace
35: 0x7f1016edf4df - rustc_hir_analysis[239f966c4ce807be]::check_crate
36: 0x7f1016f5a319 - rustc_interface[8dea96efab884454]::passes::analysis
37: 0x7f1016f59f5f - rustc_query_impl[6eb9e4a88fa21aca]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[6eb9e4a88fa21aca]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7d80ff9c88f366f3]::query::erase::Erased<[u8; 1usize]>>
38: 0x7f1017597a64 - rustc_query_system[cdab7429fb42dda2]::query::plumbing::try_execute_query::<rustc_query_impl[6eb9e4a88fa21aca]::DynamicConfig<rustc_query_system[cdab7429fb42dda2]::query::caches::SingleCache<rustc_middle[7d80ff9c88f366f3]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[6eb9e4a88fa21aca]::plumbing::QueryCtxt, false>
39: 0x7f1017597855 - rustc_query_impl[6eb9e4a88fa21aca]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
40: 0x7f101762d094 - rustc_interface[8dea96efab884454]::interface::run_compiler::<core[f50a4b4ddb6878bb]::result::Result<(), rustc_span[44814e3eac9e4a35]::ErrorGuaranteed>, rustc_driver_impl[f5f02e8ab7f89dcf]::run_compiler::{closure#0}>::{closure#0}
41: 0x7f10175b7306 - std[59bbd359e4a0812d]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[8dea96efab884454]::util::run_in_thread_with_globals<rustc_interface[8dea96efab884454]::util::run_in_thread_pool_with_globals<rustc_interface[8dea96efab884454]::interface::run_compiler<core[f50a4b4ddb6878bb]::result::Result<(), rustc_span[44814e3eac9e4a35]::ErrorGuaranteed>, rustc_driver_impl[f5f02e8ab7f89dcf]::run_compiler::{closure#0}>::{closure#0}, core[f50a4b4ddb6878bb]::result::Result<(), rustc_span[44814e3eac9e4a35]::ErrorGuaranteed>>::{closure#0}, core[f50a4b4ddb6878bb]::result::Result<(), rustc_span[44814e3eac9e4a35]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[f50a4b4ddb6878bb]::result::Result<(), rustc_span[44814e3eac9e4a35]::ErrorGuaranteed>>
42: 0x7f10175b7133 - <<std[59bbd359e4a0812d]::thread::Builder>::spawn_unchecked_<rustc_interface[8dea96efab884454]::util::run_in_thread_with_globals<rustc_interface[8dea96efab884454]::util::run_in_thread_pool_with_globals<rustc_interface[8dea96efab884454]::interface::run_compiler<core[f50a4b4ddb6878bb]::result::Result<(), rustc_span[44814e3eac9e4a35]::ErrorGuaranteed>, rustc_driver_impl[f5f02e8ab7f89dcf]::run_compiler::{closure#0}>::{closure#0}, core[f50a4b4ddb6878bb]::result::Result<(), rustc_span[44814e3eac9e4a35]::ErrorGuaranteed>>::{closure#0}, core[f50a4b4ddb6878bb]::result::Result<(), rustc_span[44814e3eac9e4a35]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[f50a4b4ddb6878bb]::result::Result<(), rustc_span[44814e3eac9e4a35]::ErrorGuaranteed>>::{closure#1} as core[f50a4b4ddb6878bb]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
43: 0x7f1018600b35 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hfced58be344e2c05
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/alloc/src/boxed.rs:2015:9
44: 0x7f1018600b35 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7842a7154462ae57
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/alloc/src/boxed.rs:2015:9
45: 0x7f1018600b35 - std::sys::unix::thread::Thread::new::thread_start::ha365c5d9b9d0ac99
at /rustc/e51e98dde6a60637b6a71b8105245b629ac3fe77/library/std/src/sys/unix/thread.rs:108:17
46: 0x7f10124aa9eb - <unknown>
47: 0x7f101252e7cc - <unknown>
48: 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: rustc 1.77.0-nightly (e51e98dde 2023-12-31) running on x86_64-unknown-linux-gnu
query stack during panic:
#0 [fn_sig] computing function signature of `foo`
#1 [collect_mod_item_types] collecting item types in top-level module
#2 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 2 previous errors; 1 warning emitted
For more information about this error, try `rustc --explain E0601`.