Closed
Description
auto-reduced (treereduce-rust):
struct PrintOnDrop<'a>(&'a str);
impl Drop for PrintOnDrop<'_> {
pub extern "C" fn valid_b() {}
}
original:
struct PrintOnDrop<'a>(&'a str);
impl Drop for PrintOnDrop<'_> {
pub extern "C" fn valid_b() {
unsafe {
{
{
asm!("", options(noreturn));
};
};
}
}
}
use std::collections::BTreeMap;
use std::iter::FromIterator;
fn main() {
let s = String::from("Hello World!");
let _map = BTreeMap::from_iter([((), PrintOnDrop(&s))]);
drop(s); //~ ERROR cannot move out of `s` because it is borrowed
}Version information
rustc 1.78.0-nightly (af88f7db5 2024-02-08)
binary: rustc
commit-hash: af88f7db51f6f2a1472f9279d7c7e7c822afff77
commit-date: 2024-02-08
host: x86_64-unknown-linux-gnu
release: 1.78.0-nightly
LLVM version: 17.0.6
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc
Program output
error[E0449]: visibility qualifiers are not permitted here
--> /tmp/icemaker_global_tempdir.KTcxw7O8nj5G/rustc_testrunner_tmpdir_reporting.ggV0pxQMrIHJ/mvce.rs:4:5
|
4 | pub extern "C" fn valid_b() {}
| ^^^
|
= note: trait items always share the visibility of their trait
error[E0407]: method `valid_b` is not a member of trait `Drop`
--> /tmp/icemaker_global_tempdir.KTcxw7O8nj5G/rustc_testrunner_tmpdir_reporting.ggV0pxQMrIHJ/mvce.rs:4:5
|
4 | pub extern "C" fn valid_b() {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not a member of trait `Drop`
error[E0601]: `main` function not found in crate `mvce`
--> /tmp/icemaker_global_tempdir.KTcxw7O8nj5G/rustc_testrunner_tmpdir_reporting.ggV0pxQMrIHJ/mvce.rs:5:2
|
5 | }
| ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.KTcxw7O8nj5G/rustc_testrunner_tmpdir_reporting.ggV0pxQMrIHJ/mvce.rs`
error[E0046]: not all trait items implemented, missing: `drop`
--> /tmp/icemaker_global_tempdir.KTcxw7O8nj5G/rustc_testrunner_tmpdir_reporting.ggV0pxQMrIHJ/mvce.rs:3:1
|
3 | impl Drop for PrintOnDrop<'_> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `drop` in implementation
|
= help: implement the missing item: `fn drop(&mut self) { todo!() }`
thread 'rustc' panicked at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/compiler/rustc_middle/src/ty/sty.rs:1316:37:
index out of bounds: the len is 0 but the index is 0
stack backtrace:
0: 0x7fa0b0b8bdd6 - std::backtrace_rs::backtrace::libunwind::trace::hf92ca961e56825b0
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
1: 0x7fa0b0b8bdd6 - std::backtrace_rs::backtrace::trace_unsynchronized::h23f341cc1a6c507f
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7fa0b0b8bdd6 - std::sys_common::backtrace::_print_fmt::ha5a5ba44893edc7f
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/std/src/sys_common/backtrace.rs:68:5
3: 0x7fa0b0b8bdd6 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h667e6ba5a1d3724e
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7fa0b0bde830 - core::fmt::rt::Argument::fmt::h06c91f49bef095fb
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/core/src/fmt/rt.rs:142:9
5: 0x7fa0b0bde830 - core::fmt::write::h8e4b31b0aa81d13f
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/core/src/fmt/mod.rs:1120:17
6: 0x7fa0b0b7f64f - std::io::Write::write_fmt::h4c479f5c53dfe78c
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/std/src/io/mod.rs:1854:15
7: 0x7fa0b0b8bbb4 - std::sys_common::backtrace::_print::he414f5864df55ed1
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7fa0b0b8bbb4 - std::sys_common::backtrace::print::h939e58bdcc61d57d
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7fa0b0b8e947 - std::panicking::default_hook::{{closure}}::h244e48e05cd664b2
10: 0x7fa0b0b8e6a9 - std::panicking::default_hook::hf842080c39497dac
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/std/src/panicking.rs:292:9
11: 0x7fa0b39454ac - std[f801e042bca9681]::panicking::update_hook::<alloc[1377227f5558ef79]::boxed::Box<rustc_driver_impl[65af58b05c4f91ef]::install_ice_hook::{closure#0}>>::{closure#0}
12: 0x7fa0b0b8f096 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hee9c09a26ce84f59
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/alloc/src/boxed.rs:2029:9
13: 0x7fa0b0b8f096 - std::panicking::rust_panic_with_hook::h83c20f9191a2a712
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/std/src/panicking.rs:785:13
14: 0x7fa0b0b8ede2 - std::panicking::begin_panic_handler::{{closure}}::h9d287414fd341199
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/std/src/panicking.rs:659:13
15: 0x7fa0b0b8c2d6 - std::sys_common::backtrace::__rust_end_short_backtrace::h6c439fc4b39e5f72
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/std/src/sys_common/backtrace.rs:171:18
16: 0x7fa0b0b8eb34 - rust_begin_unwind
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/std/src/panicking.rs:647:5
17: 0x7fa0b0bdaf35 - core::panicking::panic_fmt::h21d35284066b1c6e
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/core/src/panicking.rs:72:14
18: 0x7fa0b0bdb172 - core::panicking::panic_bounds_check::h3b6d7c2964fb4600
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/core/src/panicking.rs:208:5
19: 0x7fa0b4fe8344 - rustc_mir_build[1fe487e256cb3ff]::lints::check_drop_recursion
20: 0x7fa0b2091449 - rustc_mir_transform[f04df7d082cb6ded]::mir_drops_elaborated_and_const_checked
21: 0x7fa0b4de3675 - rustc_query_impl[5ca841c3c79670ea]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[5ca841c3c79670ea]::query_impl::mir_drops_elaborated_and_const_checked::dynamic_query::{closure#2}::{closure#0}, rustc_middle[2cc1c6e52ad3d43f]::query::erase::Erased<[u8; 8usize]>>
22: 0x7fa0b4de38fa - rustc_query_system[125a8aa150dcabe3]::query::plumbing::try_execute_query::<rustc_query_impl[5ca841c3c79670ea]::DynamicConfig<rustc_query_system[125a8aa150dcabe3]::query::caches::VecCache<rustc_span[467c297c964200f6]::def_id::LocalDefId, rustc_middle[2cc1c6e52ad3d43f]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[5ca841c3c79670ea]::plumbing::QueryCtxt, false>
23: 0x7fa0b4de31d4 - rustc_query_impl[5ca841c3c79670ea]::query_impl::mir_drops_elaborated_and_const_checked::get_query_non_incr::__rust_end_short_backtrace
24: 0x7fa0b55d44ed - rustc_interface[c2746bee48761670]::passes::analysis
25: 0x7fa0b55d3bdf - rustc_query_impl[5ca841c3c79670ea]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[5ca841c3c79670ea]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[2cc1c6e52ad3d43f]::query::erase::Erased<[u8; 1usize]>>
26: 0x7fa0b58a17b2 - rustc_query_system[125a8aa150dcabe3]::query::plumbing::try_execute_query::<rustc_query_impl[5ca841c3c79670ea]::DynamicConfig<rustc_query_system[125a8aa150dcabe3]::query::caches::SingleCache<rustc_middle[2cc1c6e52ad3d43f]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[5ca841c3c79670ea]::plumbing::QueryCtxt, false>
27: 0x7fa0b58a1515 - rustc_query_impl[5ca841c3c79670ea]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
28: 0x7fa0b58e2436 - rustc_interface[c2746bee48761670]::interface::run_compiler::<core[30be359c16b30868]::result::Result<(), rustc_span[467c297c964200f6]::ErrorGuaranteed>, rustc_driver_impl[65af58b05c4f91ef]::run_compiler::{closure#0}>::{closure#0}
29: 0x7fa0b5560248 - std[f801e042bca9681]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[c2746bee48761670]::util::run_in_thread_with_globals<rustc_interface[c2746bee48761670]::util::run_in_thread_pool_with_globals<rustc_interface[c2746bee48761670]::interface::run_compiler<core[30be359c16b30868]::result::Result<(), rustc_span[467c297c964200f6]::ErrorGuaranteed>, rustc_driver_impl[65af58b05c4f91ef]::run_compiler::{closure#0}>::{closure#0}, core[30be359c16b30868]::result::Result<(), rustc_span[467c297c964200f6]::ErrorGuaranteed>>::{closure#0}, core[30be359c16b30868]::result::Result<(), rustc_span[467c297c964200f6]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[30be359c16b30868]::result::Result<(), rustc_span[467c297c964200f6]::ErrorGuaranteed>>
30: 0x7fa0b5560077 - <<std[f801e042bca9681]::thread::Builder>::spawn_unchecked_<rustc_interface[c2746bee48761670]::util::run_in_thread_with_globals<rustc_interface[c2746bee48761670]::util::run_in_thread_pool_with_globals<rustc_interface[c2746bee48761670]::interface::run_compiler<core[30be359c16b30868]::result::Result<(), rustc_span[467c297c964200f6]::ErrorGuaranteed>, rustc_driver_impl[65af58b05c4f91ef]::run_compiler::{closure#0}>::{closure#0}, core[30be359c16b30868]::result::Result<(), rustc_span[467c297c964200f6]::ErrorGuaranteed>>::{closure#0}, core[30be359c16b30868]::result::Result<(), rustc_span[467c297c964200f6]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[30be359c16b30868]::result::Result<(), rustc_span[467c297c964200f6]::ErrorGuaranteed>>::{closure#1} as core[30be359c16b30868]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
31: 0x7fa0b0b98735 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h99757397e7c4fa77
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/alloc/src/boxed.rs:2015:9
32: 0x7fa0b0b98735 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7e0e3d311e6447da
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/alloc/src/boxed.rs:2015:9
33: 0x7fa0b0b98735 - std::sys::pal::unix::thread::Thread::new::thread_start::h0eb0f22e3002fa19
at /rustc/af88f7db51f6f2a1472f9279d7c7e7c822afff77/library/std/src/sys/pal/unix/thread.rs:108:17
34: 0x7fa0b09839eb - <unknown>
35: 0x7fa0b0a077cc - <unknown>
36: 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 (af88f7db5 2024-02-08) running on x86_64-unknown-linux-gnu
query stack during panic:
#0 [mir_drops_elaborated_and_const_checked] elaborating drops for `<impl at /tmp/icemaker_global_tempdir.KTcxw7O8nj5G/rustc_testrunner_tmpdir_reporting.ggV0pxQMrIHJ/mvce.rs:3:1: 3:30>::valid_b`
#1 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 4 previous errors
Some errors have detailed explanations: E0046, E0407, E0449, E0601.
For more information about an error, try `rustc --explain E0046`.