Closed
Description
auto-reduced (treereduce-rust):
static FOO: fn() = || assert_ne!(42, 43);
static BAR: fn(i32, i32) = |a, b| assert_ne!(a, b);
fn main() {
FOO();
let bar: unsafe fn(i32, i32) = BAR;
let f: fn() = || {};
f();
f();
f();
let g: fn(i32) = |i| assert_eq!(i, 2);
g(2);
g(2);
g(2);
}
original:
static FOO: fn() = || assert_ne!(42, 43);
static BAR: fn(i32, i32) = |a, b| assert_ne!(a, b);
// use to first make the closure FnOnce() before making it fn()
fn force_once0<R, F: FnOnce() -> R>(f: F) -> F {
f
}
fn force_once1<T, R, F: FnOnce(T) -> R>(f: F) -> F {
f
}
fn force_mut0<R, F: FnMut() -> R>(f: F) -> F {
f
}
fn force_mut1<T, R, F: FnMut(T) -> R>(f: F) -> F {
f
}
fn main() {
FOO();
BAR(44, 45);
let bar: unsafe fn(i32, i32) = BAR;
unsafe { bar(46, 47) };
let boo: &dyn Fn(i32, i32) = &BAR;
boo(48, 49);
let f: fn() = || {};
f();
let f = force_once0(|| {}) as fn();
f();
let f = force_mut0(|| {}) as fn();
f();
let g: fn(i32) = |i| assert_eq!(i, 2);
g(2);
let g = force_once1(|i| assert_eq!(i, 2)) as fn(i32);
g(2);
let g = force_mut1(|i| assert_eq!(i, 2)) as fn(i32);
g(2);
}Version information
rustc 1.78.0-nightly (9aa232ecc 2024-02-11)
binary: rustc
commit-hash: 9aa232ecc7bb006a1fad404f437b049482021a3a
commit-date: 2024-02-11
host: x86_64-unknown-linux-gnu
release: 1.78.0-nightly
LLVM version: 17.0.6
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc -Zmir-opt-level=5
Program output
warning: unused variable: `bar`
--> /tmp/icemaker_global_tempdir.tkO1egN3Uvx5/rustc_testrunner_tmpdir_reporting.BMSxZ0VHemue/mvce.rs:7:9
|
7 | let bar: unsafe fn(i32, i32) = BAR;
| ^^^ help: if this is intentional, prefix it with an underscore: `_bar`
|
= note: `#[warn(unused_variables)]` on by default
thread 'rustc' panicked at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/compiler/rustc_const_eval/src/interpret/cast.rs:203:9:
assertion failed: cast_to.ty.is_unsafe_ptr()
stack backtrace:
0: 0x7f7c9d986416 - std::backtrace_rs::backtrace::libunwind::trace::haa332446d2816da1
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
1: 0x7f7c9d986416 - std::backtrace_rs::backtrace::trace_unsynchronized::hc79ac4bb87de99b7
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f7c9d986416 - std::sys_common::backtrace::_print_fmt::h826e31038d6fed55
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/std/src/sys_common/backtrace.rs:68:5
3: 0x7f7c9d986416 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h7d45101adaea8e2e
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7f7c9d9d8f90 - core::fmt::rt::Argument::fmt::habb091c2e565929c
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/core/src/fmt/rt.rs:142:9
5: 0x7f7c9d9d8f90 - core::fmt::write::h430cd915198bfbfa
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/core/src/fmt/mod.rs:1120:17
6: 0x7f7c9d979c9f - std::io::Write::write_fmt::h76a4f85596572687
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/std/src/io/mod.rs:1854:15
7: 0x7f7c9d9861f4 - std::sys_common::backtrace::_print::h730103227e62d0c1
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7f7c9d9861f4 - std::sys_common::backtrace::print::h4b37a0052f447bb6
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7f7c9d988fe7 - std::panicking::default_hook::{{closure}}::h9ce01cf4995c297e
10: 0x7f7c9d988d49 - std::panicking::default_hook::h82708ac75720d681
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/std/src/panicking.rs:292:9
11: 0x7f7c9a74999c - std[2504e1f5e79dbd0a]::panicking::update_hook::<alloc[4e175fcaaf6bf4c3]::boxed::Box<rustc_driver_impl[f5849ce36d1a60d2]::install_ice_hook::{closure#0}>>::{closure#0}
12: 0x7f7c9d989736 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h9c044ab60f052747
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/alloc/src/boxed.rs:2030:9
13: 0x7f7c9d989736 - std::panicking::rust_panic_with_hook::h47b07230e93314a2
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/std/src/panicking.rs:785:13
14: 0x7f7c9d989449 - std::panicking::begin_panic_handler::{{closure}}::h6c5fbc890ce207d0
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/std/src/panicking.rs:651:13
15: 0x7f7c9d986916 - std::sys_common::backtrace::__rust_end_short_backtrace::hec2f82c01fee32cd
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/std/src/sys_common/backtrace.rs:171:18
16: 0x7f7c9d9891d4 - rust_begin_unwind
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/std/src/panicking.rs:647:5
17: 0x7f7c9d9d56e5 - core::panicking::panic_fmt::h48a1a0d3500755c9
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/core/src/panicking.rs:72:14
18: 0x7f7c9d9d57a3 - core::panicking::panic::h38ca9e7edcd01163
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/core/src/panicking.rs:144:5
19: 0x7f7c9c29e56c - <rustc_mir_transform[156c0abd78acfd74]::gvn::VnState>::insert
20: 0x7f7c9c0601a5 - <rustc_mir_transform[156c0abd78acfd74]::gvn::VnState>::simplify_rvalue
21: 0x7f7c9999ae61 - <rustc_mir_transform[156c0abd78acfd74]::gvn::GVN as rustc_middle[dddd7df0b25e8df]::mir::MirPass>::run_pass
22: 0x7f7c9ba10a29 - rustc_mir_transform[156c0abd78acfd74]::pass_manager::run_passes_inner
23: 0x7f7c9bf2882a - rustc_mir_transform[156c0abd78acfd74]::optimized_mir
24: 0x7f7c9ba7a535 - rustc_query_impl[6d1f17dd37feccf6]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[6d1f17dd37feccf6]::query_impl::optimized_mir::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dddd7df0b25e8df]::query::erase::Erased<[u8; 8usize]>>
25: 0x7f7c9ba7abe1 - rustc_query_system[e40b0ad2841d92dc]::query::plumbing::try_execute_query::<rustc_query_impl[6d1f17dd37feccf6]::DynamicConfig<rustc_query_system[e40b0ad2841d92dc]::query::caches::DefIdCache<rustc_middle[dddd7df0b25e8df]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[6d1f17dd37feccf6]::plumbing::QueryCtxt, false>
26: 0x7f7c9ba7a35e - rustc_query_impl[6d1f17dd37feccf6]::query_impl::optimized_mir::get_query_non_incr::__rust_end_short_backtrace
27: 0x7f7c98a00be8 - <rustc_middle[dddd7df0b25e8df]::ty::context::TyCtxt>::instance_mir
28: 0x7f7c995b40f1 - rustc_monomorphize[f093a8358fafe6ae]::collector::collect_items_rec::{closure#0}
29: 0x7f7c9c8b2416 - rustc_monomorphize[f093a8358fafe6ae]::collector::collect_items_rec
30: 0x7f7c9c8adaff - rustc_monomorphize[f093a8358fafe6ae]::partitioning::collect_and_partition_mono_items
31: 0x7f7c9c8ad170 - rustc_query_impl[6d1f17dd37feccf6]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[6d1f17dd37feccf6]::query_impl::collect_and_partition_mono_items::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dddd7df0b25e8df]::query::erase::Erased<[u8; 24usize]>>
32: 0x7f7c9c8ad155 - <rustc_query_impl[6d1f17dd37feccf6]::query_impl::collect_and_partition_mono_items::dynamic_query::{closure#2} as core[ae955e53bd86118a]::ops::function::FnOnce<(rustc_middle[dddd7df0b25e8df]::ty::context::TyCtxt, ())>>::call_once
33: 0x7f7c9c8ac4c7 - rustc_query_system[e40b0ad2841d92dc]::query::plumbing::try_execute_query::<rustc_query_impl[6d1f17dd37feccf6]::DynamicConfig<rustc_query_system[e40b0ad2841d92dc]::query::caches::SingleCache<rustc_middle[dddd7df0b25e8df]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[6d1f17dd37feccf6]::plumbing::QueryCtxt, false>
34: 0x7f7c9c8ac1c9 - rustc_query_impl[6d1f17dd37feccf6]::query_impl::collect_and_partition_mono_items::get_query_non_incr::__rust_end_short_backtrace
35: 0x7f7c9c6f0d95 - rustc_codegen_ssa[1e476fc2cbfb7ad1]::base::codegen_crate::<rustc_codegen_llvm[35c5f462c9ac856d]::LlvmCodegenBackend>
36: 0x7f7c9c6f0a49 - <rustc_codegen_llvm[35c5f462c9ac856d]::LlvmCodegenBackend as rustc_codegen_ssa[1e476fc2cbfb7ad1]::traits::backend::CodegenBackend>::codegen_crate
37: 0x7f7c9c97f0f0 - rustc_interface[614167ae26197186]::passes::start_codegen
38: 0x7f7c9c97e835 - <rustc_interface[614167ae26197186]::queries::Queries>::codegen_and_build_linker
39: 0x7f7c9c7300c5 - rustc_interface[614167ae26197186]::interface::run_compiler::<core[ae955e53bd86118a]::result::Result<(), rustc_span[5816d1300c2c104a]::ErrorGuaranteed>, rustc_driver_impl[f5849ce36d1a60d2]::run_compiler::{closure#0}>::{closure#0}
40: 0x7f7c9c96e0d2 - std[2504e1f5e79dbd0a]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[614167ae26197186]::util::run_in_thread_with_globals<rustc_interface[614167ae26197186]::util::run_in_thread_pool_with_globals<rustc_interface[614167ae26197186]::interface::run_compiler<core[ae955e53bd86118a]::result::Result<(), rustc_span[5816d1300c2c104a]::ErrorGuaranteed>, rustc_driver_impl[f5849ce36d1a60d2]::run_compiler::{closure#0}>::{closure#0}, core[ae955e53bd86118a]::result::Result<(), rustc_span[5816d1300c2c104a]::ErrorGuaranteed>>::{closure#0}, core[ae955e53bd86118a]::result::Result<(), rustc_span[5816d1300c2c104a]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[ae955e53bd86118a]::result::Result<(), rustc_span[5816d1300c2c104a]::ErrorGuaranteed>>
41: 0x7f7c9c96defe - <<std[2504e1f5e79dbd0a]::thread::Builder>::spawn_unchecked_<rustc_interface[614167ae26197186]::util::run_in_thread_with_globals<rustc_interface[614167ae26197186]::util::run_in_thread_pool_with_globals<rustc_interface[614167ae26197186]::interface::run_compiler<core[ae955e53bd86118a]::result::Result<(), rustc_span[5816d1300c2c104a]::ErrorGuaranteed>, rustc_driver_impl[f5849ce36d1a60d2]::run_compiler::{closure#0}>::{closure#0}, core[ae955e53bd86118a]::result::Result<(), rustc_span[5816d1300c2c104a]::ErrorGuaranteed>>::{closure#0}, core[ae955e53bd86118a]::result::Result<(), rustc_span[5816d1300c2c104a]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[ae955e53bd86118a]::result::Result<(), rustc_span[5816d1300c2c104a]::ErrorGuaranteed>>::{closure#1} as core[ae955e53bd86118a]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
42: 0x7f7c9d992925 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3205da42e967968e
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/alloc/src/boxed.rs:2016:9
43: 0x7f7c9d992925 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3a8d804b35a578bc
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/alloc/src/boxed.rs:2016:9
44: 0x7f7c9d992925 - std::sys::pal::unix::thread::Thread::new::thread_start::ha87a0836a03cdbad
at /rustc/9aa232ecc7bb006a1fad404f437b049482021a3a/library/std/src/sys/pal/unix/thread.rs:108:17
45: 0x7f7c978749eb - <unknown>
46: 0x7f7c978f87cc - <unknown>
47: 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 1.78.0-nightly (9aa232ecc 2024-02-11) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z mir-opt-level=5 -Z dump-mir-dir=dir
query stack during panic:
#0 [optimized_mir] optimizing MIR for `main`
#1 [collect_and_partition_mono_items] collect_and_partition_mono_items
end of query stack
warning: 1 warning emitted