Closed
Description
auto-reduced (treereduce-rust):
fn main() {
let s = [(); {
let mut n = 113383;
while n != 0 {}
n
}];
s.nonexistent_method();
}
original:
//! This test tests two things at once:
//! 1. we error if a const evaluation hits the deny-by-default lint limit
//! 2. we do not ICE on invalid follow-up code
//@ compile-flags: -Z tiny-const-eval-limit
fn main() {
// Paren generic args in AnonymousReportError
// The value of `n` will loop indefinitely (4 - 2 - 1 - 4).
let s = [(); {
let mut n = 113383; // #20 in https://oeis.org/A006884
while n != 0 {
//~^ ERROR is taking a long time
n = if n % 2 == 0 { n / 2 } else { 3 * n + 1 };
}
n
}];
s.nonexistent_method();
}Version information
rustc 1.78.0-nightly (9c3ad802d 2024-03-07)
binary: rustc
commit-hash: 9c3ad802d9b9633d60d3a74668eb1be819212d34
commit-date: 2024-03-07
host: x86_64-unknown-linux-gnu
release: 1.78.0-nightly
LLVM version: 18.1.0
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc -Zunstable-options
Program output
warning: variable does not need to be mutable
--> /tmp/icemaker_global_tempdir.tnThSS4Op8nc/rustc_testrunner_tmpdir_reporting.U0bd0T4nR0Ub/mvce.rs:3:13
|
3 | let mut n = 113383;
| ----^
| |
| help: remove this `mut`
|
= note: `#[warn(unused_mut)]` on by default
error: constant evaluation is taking a long time
--> /tmp/icemaker_global_tempdir.tnThSS4Op8nc/rustc_testrunner_tmpdir_reporting.U0bd0T4nR0Ub/mvce.rs:4:9
|
4 | while n != 0 {}
| ^^^^^^^^^^^^^^^
|
= note: this lint makes sure the compiler doesn't get stuck due to infinite loops in const eval.
If your compilation actually takes a long time, you can safely allow the lint.
help: the constant being evaluated
--> /tmp/icemaker_global_tempdir.tnThSS4Op8nc/rustc_testrunner_tmpdir_reporting.U0bd0T4nR0Ub/mvce.rs:2:18
|
2 | let s = [(); {
| __________________^
3 | | let mut n = 113383;
4 | | while n != 0 {}
5 | | n
6 | | }];
| |_____^
= note: `#[deny(long_running_const_eval)]` on by default
thread 'rustc' panicked at compiler/rustc_lint/src/internal.rs:383:85:
called `Option::unwrap()` on a `None` value
stack backtrace:
0: 0x7f165c840744 - std::backtrace_rs::backtrace::libunwind::trace::hd79b9078a34dff8c
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
1: 0x7f165c840744 - std::backtrace_rs::backtrace::trace_unsynchronized::hb030a00513a1f538
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f165c840744 - std::sys_common::backtrace::_print_fmt::h9e8f2e41a9fc6909
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/sys_common/backtrace.rs:68:5
3: 0x7f165c840744 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h6f607e0d4dd3a9cf
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7f165c891a7c - core::fmt::rt::Argument::fmt::h09f11d700bacd96c
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/core/src/fmt/rt.rs:142:9
5: 0x7f165c891a7c - core::fmt::write_internal::h310f192d94aa585c
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/core/src/fmt/mod.rs:1143:17
6: 0x7f165c835157 - core::fmt::write::hd3de438db38ee127
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/core/src/fmt/mod.rs:1125:67
7: 0x7f165c835157 - std::io::Write::write_fmt::h3b33808356b90221
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/io/mod.rs:1846:15
8: 0x7f165c8404f4 - std::sys_common::backtrace::_print::h611f07983f175f23
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/sys_common/backtrace.rs:47:5
9: 0x7f165c8404f4 - std::sys_common::backtrace::print::h6363f60fb7870801
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/sys_common/backtrace.rs:34:9
10: 0x7f165c8430fb - std::panicking::default_hook::{{closure}}::h918979fb10785ece
11: 0x7f165c842e57 - std::panicking::default_hook::h7cb2ae29c5cb7a04
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/panicking.rs:292:9
12: 0x7f165945f79c - std[3bcdf4610aa8fcfe]::panicking::update_hook::<alloc[693dccb2014d768d]::boxed::Box<rustc_driver_impl[31aa33c569e87665]::install_ice_hook::{closure#0}>>::{closure#0}
13: 0x7f165c843812 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hd696ff45800b08d8
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/alloc/src/boxed.rs:2030:9
14: 0x7f165c843812 - std::panicking::rust_panic_with_hook::h50affda8314ad6e5
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/panicking.rs:783:13
15: 0x7f165c843599 - std::panicking::begin_panic_handler::{{closure}}::h8093c7c84d3aa062
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/panicking.rs:649:13
16: 0x7f165c840c16 - std::sys_common::backtrace::__rust_end_short_backtrace::h1bc420f809db97be
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/sys_common/backtrace.rs:171:18
17: 0x7f165c8432d4 - rust_begin_unwind
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/panicking.rs:645:5
18: 0x7f165c88dcd5 - core::panicking::panic_fmt::h3e7482ac39c7599a
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/core/src/panicking.rs:72:14
19: 0x7f165c88dd93 - core::panicking::panic::hd7ed5adeff7473ba
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/core/src/panicking.rs:145:5
20: 0x7f165c88da36 - core::option::unwrap_failed::hb356953c4b4f9864
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/core/src/option.rs:1985:5
21: 0x7f16597ec15d - <rustc_lint[2b73a2429b57f1ff]::internal::Diagnostics as rustc_lint[2b73a2429b57f1ff]::passes::LateLintPass>::check_expr
22: 0x7f16597ed262 - <rustc_lint[2b73a2429b57f1ff]::late::LateContextAndPass<rustc_lint[2b73a2429b57f1ff]::late::RuntimeCombinedLateLintPass> as rustc_hir[8206a477fef721a0]::intravisit::Visitor>::visit_expr::{closure#0}
23: 0x7f16597ed0f8 - <rustc_lint[2b73a2429b57f1ff]::late::LateContextAndPass<rustc_lint[2b73a2429b57f1ff]::late::RuntimeCombinedLateLintPass> as rustc_hir[8206a477fef721a0]::intravisit::Visitor>::visit_expr
24: 0x7f16597edeac - <rustc_lint[2b73a2429b57f1ff]::late::LateContextAndPass<rustc_lint[2b73a2429b57f1ff]::late::RuntimeCombinedLateLintPass> as rustc_hir[8206a477fef721a0]::intravisit::Visitor>::visit_block
25: 0x7f16597ed704 - <rustc_lint[2b73a2429b57f1ff]::late::LateContextAndPass<rustc_lint[2b73a2429b57f1ff]::late::RuntimeCombinedLateLintPass> as rustc_hir[8206a477fef721a0]::intravisit::Visitor>::visit_expr::{closure#0}
26: 0x7f16597ed0f8 - <rustc_lint[2b73a2429b57f1ff]::late::LateContextAndPass<rustc_lint[2b73a2429b57f1ff]::late::RuntimeCombinedLateLintPass> as rustc_hir[8206a477fef721a0]::intravisit::Visitor>::visit_expr
27: 0x7f16597ecff8 - <rustc_lint[2b73a2429b57f1ff]::late::LateContextAndPass<rustc_lint[2b73a2429b57f1ff]::late::RuntimeCombinedLateLintPass> as rustc_hir[8206a477fef721a0]::intravisit::Visitor>::visit_nested_body
28: 0x7f16597edcb4 - <rustc_lint[2b73a2429b57f1ff]::late::LateContextAndPass<rustc_lint[2b73a2429b57f1ff]::late::RuntimeCombinedLateLintPass> as rustc_hir[8206a477fef721a0]::intravisit::Visitor>::visit_fn
29: 0x7f16597dcdd4 - <rustc_lint[2b73a2429b57f1ff]::late::LateContextAndPass<rustc_lint[2b73a2429b57f1ff]::late::RuntimeCombinedLateLintPass> as rustc_hir[8206a477fef721a0]::intravisit::Visitor>::visit_nested_item
30: 0x7f165abab02b - rustc_lint[2b73a2429b57f1ff]::lint_mod
31: 0x7f165abaab67 - rustc_query_impl[ebede55f2ba688a3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[ebede55f2ba688a3]::query_impl::lint_mod::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fd081ac05546064c]::query::erase::Erased<[u8; 0usize]>>
32: 0x7f165b412fad - rustc_query_system[67c50b8e9e85bc4b]::query::plumbing::try_execute_query::<rustc_query_impl[ebede55f2ba688a3]::DynamicConfig<rustc_query_system[67c50b8e9e85bc4b]::query::caches::DefaultCache<rustc_span[9b5de1c806cc2c00]::def_id::LocalModDefId, rustc_middle[fd081ac05546064c]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[ebede55f2ba688a3]::plumbing::QueryCtxt, false>
33: 0x7f165b4118bf - rustc_query_impl[ebede55f2ba688a3]::query_impl::lint_mod::get_query_non_incr::__rust_end_short_backtrace
34: 0x7f165b41145f - rustc_lint[2b73a2429b57f1ff]::late::check_crate::{closure#1}
35: 0x7f165b410e5e - rustc_lint[2b73a2429b57f1ff]::late::check_crate
36: 0x7f165b3514a0 - rustc_interface[7cf7fd78b82fa32a]::passes::analysis
37: 0x7f165b350119 - rustc_query_impl[ebede55f2ba688a3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[ebede55f2ba688a3]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fd081ac05546064c]::query::erase::Erased<[u8; 1usize]>>
38: 0x7f165b592265 - rustc_query_system[67c50b8e9e85bc4b]::query::plumbing::try_execute_query::<rustc_query_impl[ebede55f2ba688a3]::DynamicConfig<rustc_query_system[67c50b8e9e85bc4b]::query::caches::SingleCache<rustc_middle[fd081ac05546064c]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[ebede55f2ba688a3]::plumbing::QueryCtxt, false>
39: 0x7f165b591fc9 - rustc_query_impl[ebede55f2ba688a3]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
40: 0x7f165b51bf8f - rustc_interface[7cf7fd78b82fa32a]::interface::run_compiler::<core[93adbeecb64913d3]::result::Result<(), rustc_span[9b5de1c806cc2c00]::ErrorGuaranteed>, rustc_driver_impl[31aa33c569e87665]::run_compiler::{closure#0}>::{closure#0}
41: 0x7f165b7d0005 - std[3bcdf4610aa8fcfe]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[7cf7fd78b82fa32a]::util::run_in_thread_with_globals<rustc_interface[7cf7fd78b82fa32a]::util::run_in_thread_pool_with_globals<rustc_interface[7cf7fd78b82fa32a]::interface::run_compiler<core[93adbeecb64913d3]::result::Result<(), rustc_span[9b5de1c806cc2c00]::ErrorGuaranteed>, rustc_driver_impl[31aa33c569e87665]::run_compiler::{closure#0}>::{closure#0}, core[93adbeecb64913d3]::result::Result<(), rustc_span[9b5de1c806cc2c00]::ErrorGuaranteed>>::{closure#0}, core[93adbeecb64913d3]::result::Result<(), rustc_span[9b5de1c806cc2c00]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[93adbeecb64913d3]::result::Result<(), rustc_span[9b5de1c806cc2c00]::ErrorGuaranteed>>
42: 0x7f165b7cfe32 - <<std[3bcdf4610aa8fcfe]::thread::Builder>::spawn_unchecked_<rustc_interface[7cf7fd78b82fa32a]::util::run_in_thread_with_globals<rustc_interface[7cf7fd78b82fa32a]::util::run_in_thread_pool_with_globals<rustc_interface[7cf7fd78b82fa32a]::interface::run_compiler<core[93adbeecb64913d3]::result::Result<(), rustc_span[9b5de1c806cc2c00]::ErrorGuaranteed>, rustc_driver_impl[31aa33c569e87665]::run_compiler::{closure#0}>::{closure#0}, core[93adbeecb64913d3]::result::Result<(), rustc_span[9b5de1c806cc2c00]::ErrorGuaranteed>>::{closure#0}, core[93adbeecb64913d3]::result::Result<(), rustc_span[9b5de1c806cc2c00]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[93adbeecb64913d3]::result::Result<(), rustc_span[9b5de1c806cc2c00]::ErrorGuaranteed>>::{closure#1} as core[93adbeecb64913d3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
43: 0x7f165c84cf75 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hdd6038e2544823b8
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/alloc/src/boxed.rs:2016:9
44: 0x7f165c84cf75 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3c0d32827bf54df1
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/alloc/src/boxed.rs:2016:9
45: 0x7f165c84cf75 - std::sys::pal::unix::thread::Thread::new::thread_start::h05976f6f44bd9999
at /rustc/9c3ad802d9b9633d60d3a74668eb1be819212d34/library/std/src/sys/pal/unix/thread.rs:108:17
46: 0x7f16564a955a - <unknown>
47: 0x7f1656526a3c - <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 1.78.0-nightly (9c3ad802d 2024-03-07) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z unstable-options -Z dump-mir-dir=dir
query stack during panic:
#0 [lint_mod] linting top-level module
#1 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 1 previous error; 1 warning emitted