Closed
Description
Code
const CONST_STRING: String = String::new();
fn main() {
//code
let empty_str=String::from("");
if let CONST_STRING = empty_str {
//code
}
}Meta
rustc --version --verbose:
rustc 1.74.0-nightly (a991861ec 2023-09-05)
binary: rustc
commit-hash: a991861ec9fd8aedffbe5744a8852c7c64dd40b2
commit-date: 2023-09-05
host: x86_64-unknown-linux-gnu
release: 1.74.0-nightly
LLVM version: 17.0.0
This bug was also reproduced in the stable version(1.72)
Error output
warning: to use a constant of type `Vec<u8>` in a pattern, `Vec<u8>` must be annotated with `#[derive(PartialEq, Eq)]`
--> bug.rs:5:12
|
5 | if let CONST_STRING = empty_str {
| ^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #62411 <https://github.com/rust-lang/rust/issues/62411>
= note: the traits must be derived, manual `impl`s are not sufficient
= note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details
= note: `#[warn(indirect_structural_match)]` on by default
Backtrace
error: internal compiler error: compiler/rustc_mir_build/src/build/matches/test.rs:244:25: matching on `String` went through without enabling string_deref_patterns
thread 'rustc' panicked at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/compiler/rustc_errors/src/lib.rs:1651:9:
Box<dyn Any>
stack backtrace:
0: 0x7f53ffd3cbec - std::backtrace_rs::backtrace::libunwind::trace::h1298100820b00e42
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7f53ffd3cbec - std::backtrace_rs::backtrace::trace_unsynchronized::h25ae9be29b50d68d
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f53ffd3cbec - std::sys_common::backtrace::_print_fmt::hb0a122c02a9e329f
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/std/src/sys_common/backtrace.rs:67:5
3: 0x7f53ffd3cbec - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h0785508acad78739
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7f53ffda2dfc - core::fmt::rt::Argument::fmt::h367a8235fd3b8ec9
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/core/src/fmt/rt.rs:138:9
5: 0x7f53ffda2dfc - core::fmt::write::haf0f122656cf716d
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/core/src/fmt/mod.rs:1094:21
6: 0x7f53ffd2f71e - std::io::Write::write_fmt::h81969da61711600d
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/std/src/io/mod.rs:1714:15
7: 0x7f53ffd3c9d4 - std::sys_common::backtrace::_print::h00e5c4a2e9966b17
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7f53ffd3c9d4 - std::sys_common::backtrace::print::hbf7a0e8e19400072
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7f53ffd3faca - std::panicking::panic_hook_with_disk_dump::{{closure}}::h27904b15b8804b04
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/std/src/panicking.rs:280:22
10: 0x7f53ffd3f7c5 - std::panicking::panic_hook_with_disk_dump::h0a17a9fc902df4ec
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/std/src/panicking.rs:314:9
11: 0x7f5402ef56d9 - rustc_driver_impl[421f961c2abd6a6c]::install_ice_hook::{closure#0}
12: 0x7f53ffd40383 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::he211df56096a7722
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/alloc/src/boxed.rs:2021:9
13: 0x7f53ffd40383 - std::panicking::rust_panic_with_hook::h2ec7fb05ba41ff26
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/std/src/panicking.rs:757:13
14: 0x7f540349dac4 - std[2ba0c775535575e]::panicking::begin_panic::<rustc_errors[186b26c5db3132b8]::ExplicitBug>::{closure#0}
15: 0x7f540349cc56 - std[2ba0c775535575e]::sys_common::backtrace::__rust_end_short_backtrace::<std[2ba0c775535575e]::panicking::begin_panic<rustc_errors[186b26c5db3132b8]::ExplicitBug>::{closure#0}, !>
16: 0x7f54033f4676 - std[2ba0c775535575e]::panicking::begin_panic::<rustc_errors[186b26c5db3132b8]::ExplicitBug>
17: 0x7f540347f634 - <rustc_errors[186b26c5db3132b8]::HandlerInner>::bug::<alloc[143706f611eb5894]::string::String>
18: 0x7f540347f4a6 - <rustc_errors[186b26c5db3132b8]::Handler>::bug::<alloc[143706f611eb5894]::string::String>
19: 0x7f54034a2f2c - rustc_middle[7266ccbfd6f08af0]::util::bug::opt_span_bug_fmt::<rustc_span[e182e80647a6f439]::span_encoding::Span>::{closure#0}
20: 0x7f54034a0a6a - rustc_middle[7266ccbfd6f08af0]::ty::context::tls::with_opt::<rustc_middle[7266ccbfd6f08af0]::util::bug::opt_span_bug_fmt<rustc_span[e182e80647a6f439]::span_encoding::Span>::{closure#0}, !>::{closure#0}
21: 0x7f54034a0a38 - rustc_middle[7266ccbfd6f08af0]::ty::context::tls::with_context_opt::<rustc_middle[7266ccbfd6f08af0]::ty::context::tls::with_opt<rustc_middle[7266ccbfd6f08af0]::util::bug::opt_span_bug_fmt<rustc_span[e182e80647a6f439]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
22: 0x7f54019968a0 - rustc_middle[7266ccbfd6f08af0]::util::bug::bug_fmt
23: 0x7f54020ffb6c - <rustc_mir_build[442994af0620fa82]::build::Builder>::match_simplified_candidates
24: 0x7f54021057ff - <rustc_mir_build[442994af0620fa82]::build::Builder>::match_candidates
25: 0x7f540138ad37 - <rustc_mir_build[442994af0620fa82]::build::Builder>::lower_match_tree
26: 0x7f54013a32b9 - <rustc_mir_build[442994af0620fa82]::build::Builder>::lower_let_expr
27: 0x7f54013944fd - <rustc_mir_build[442994af0620fa82]::build::Builder>::then_else_break
28: 0x7f54013935c9 - <rustc_mir_build[442994af0620fa82]::build::Builder>::then_else_break
29: 0x7f540136917a - <rustc_mir_build[442994af0620fa82]::build::Builder>::expr_into_dest
30: 0x7f5401368722 - <rustc_mir_build[442994af0620fa82]::build::Builder>::expr_into_dest
31: 0x7f5401398762 - <rustc_mir_build[442994af0620fa82]::build::Builder>::ast_block_stmts
32: 0x7f540138b568 - <rustc_mir_build[442994af0620fa82]::build::Builder>::ast_block
33: 0x7f54013668a6 - <rustc_mir_build[442994af0620fa82]::build::Builder>::expr_into_dest
34: 0x7f5401368722 - <rustc_mir_build[442994af0620fa82]::build::Builder>::expr_into_dest
35: 0x7f5401368722 - <rustc_mir_build[442994af0620fa82]::build::Builder>::expr_into_dest
36: 0x7f5401eda8a7 - rustc_mir_build[442994af0620fa82]::build::mir_built
37: 0x7f5400fff97c - rustc_query_impl[e4e476eeb45651d1]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e4e476eeb45651d1]::query_impl::mir_built::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7266ccbfd6f08af0]::query::erase::Erased<[u8; 8usize]>>
38: 0x7f5400fff95e - <rustc_query_impl[e4e476eeb45651d1]::query_impl::mir_built::dynamic_query::{closure#2} as core[91a7ba3c96b8fb6a]::ops::function::FnOnce<(rustc_middle[7266ccbfd6f08af0]::ty::context::TyCtxt, rustc_span[e182e80647a6f439]::def_id::LocalDefId)>>::call_once
39: 0x7f54010fa498 - rustc_query_system[44d60dfb7090b806]::query::plumbing::try_execute_query::<rustc_query_impl[e4e476eeb45651d1]::DynamicConfig<rustc_query_system[44d60dfb7090b806]::query::caches::VecCache<rustc_span[e182e80647a6f439]::def_id::LocalDefId, rustc_middle[7266ccbfd6f08af0]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[e4e476eeb45651d1]::plumbing::QueryCtxt, false>
40: 0x7f5402889531 - rustc_query_impl[e4e476eeb45651d1]::query_impl::mir_built::get_query_non_incr::__rust_end_short_backtrace
41: 0x7f54021744e9 - rustc_mir_transform[ebf36c8e57c3f18]::check_unsafety::unsafety_check_result
42: 0x7f5400fff9bc - rustc_query_impl[e4e476eeb45651d1]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e4e476eeb45651d1]::query_impl::unsafety_check_result::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7266ccbfd6f08af0]::query::erase::Erased<[u8; 8usize]>>
43: 0x7f5400fff99e - <rustc_query_impl[e4e476eeb45651d1]::query_impl::unsafety_check_result::dynamic_query::{closure#2} as core[91a7ba3c96b8fb6a]::ops::function::FnOnce<(rustc_middle[7266ccbfd6f08af0]::ty::context::TyCtxt, rustc_span[e182e80647a6f439]::def_id::LocalDefId)>>::call_once
44: 0x7f54010fa498 - rustc_query_system[44d60dfb7090b806]::query::plumbing::try_execute_query::<rustc_query_impl[e4e476eeb45651d1]::DynamicConfig<rustc_query_system[44d60dfb7090b806]::query::caches::VecCache<rustc_span[e182e80647a6f439]::def_id::LocalDefId, rustc_middle[7266ccbfd6f08af0]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[e4e476eeb45651d1]::plumbing::QueryCtxt, false>
45: 0x7f540288fea1 - rustc_query_impl[e4e476eeb45651d1]::query_impl::unsafety_check_result::get_query_non_incr::__rust_end_short_backtrace
46: 0x7f5402258cea - rustc_mir_transform[ebf36c8e57c3f18]::mir_const
47: 0x7f540102d4be - rustc_query_impl[e4e476eeb45651d1]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e4e476eeb45651d1]::query_impl::mir_const::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7266ccbfd6f08af0]::query::erase::Erased<[u8; 8usize]>>
48: 0x7f540102d48e - <rustc_query_impl[e4e476eeb45651d1]::query_impl::mir_const::dynamic_query::{closure#2} as core[91a7ba3c96b8fb6a]::ops::function::FnOnce<(rustc_middle[7266ccbfd6f08af0]::ty::context::TyCtxt, rustc_span[e182e80647a6f439]::def_id::LocalDefId)>>::call_once
49: 0x7f54010fa498 - rustc_query_system[44d60dfb7090b806]::query::plumbing::try_execute_query::<rustc_query_impl[e4e476eeb45651d1]::DynamicConfig<rustc_query_system[44d60dfb7090b806]::query::caches::VecCache<rustc_span[e182e80647a6f439]::def_id::LocalDefId, rustc_middle[7266ccbfd6f08af0]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[e4e476eeb45651d1]::plumbing::QueryCtxt, false>
50: 0x7f54028898a1 - rustc_query_impl[e4e476eeb45651d1]::query_impl::mir_const::get_query_non_incr::__rust_end_short_backtrace
51: 0x7f5401211a7b - rustc_mir_transform[ebf36c8e57c3f18]::mir_promoted
52: 0x7f5400fff631 - rustc_query_impl[e4e476eeb45651d1]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e4e476eeb45651d1]::query_impl::mir_promoted::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7266ccbfd6f08af0]::query::erase::Erased<[u8; 16usize]>>
53: 0x7f54015ce0e2 - rustc_query_system[44d60dfb7090b806]::query::plumbing::try_execute_query::<rustc_query_impl[e4e476eeb45651d1]::DynamicConfig<rustc_query_system[44d60dfb7090b806]::query::caches::VecCache<rustc_span[e182e80647a6f439]::def_id::LocalDefId, rustc_middle[7266ccbfd6f08af0]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[e4e476eeb45651d1]::plumbing::QueryCtxt, false>
54: 0x7f540288a274 - rustc_query_impl[e4e476eeb45651d1]::query_impl::mir_promoted::get_query_non_incr::__rust_end_short_backtrace
55: 0x7f5401c9ac83 - rustc_borrowck[b34d41cd82b04a8d]::mir_borrowck
56: 0x7f540102d45e - rustc_query_impl[e4e476eeb45651d1]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e4e476eeb45651d1]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7266ccbfd6f08af0]::query::erase::Erased<[u8; 8usize]>>
57: 0x7f540102d42e - <rustc_query_impl[e4e476eeb45651d1]::query_impl::mir_borrowck::dynamic_query::{closure#2} as core[91a7ba3c96b8fb6a]::ops::function::FnOnce<(rustc_middle[7266ccbfd6f08af0]::ty::context::TyCtxt, rustc_span[e182e80647a6f439]::def_id::LocalDefId)>>::call_once
58: 0x7f54010fa498 - rustc_query_system[44d60dfb7090b806]::query::plumbing::try_execute_query::<rustc_query_impl[e4e476eeb45651d1]::DynamicConfig<rustc_query_system[44d60dfb7090b806]::query::caches::VecCache<rustc_span[e182e80647a6f439]::def_id::LocalDefId, rustc_middle[7266ccbfd6f08af0]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[e4e476eeb45651d1]::plumbing::QueryCtxt, false>
59: 0x7f5402893b71 - rustc_query_impl[e4e476eeb45651d1]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
60: 0x7f540235a385 - rustc_data_structures[4483c8f9b2693f2d]::sync::par_for_each_in::<&[rustc_span[e182e80647a6f439]::def_id::LocalDefId], <rustc_middle[7266ccbfd6f08af0]::hir::map::Map>::par_body_owners<rustc_interface[e402a4e95d47e40d]::passes::analysis::{closure#1}::{closure#0}>::{closure#0}>
61: 0x7f540235a0bc - <rustc_session[a813519ed55dc798]::session::Session>::time::<(), rustc_interface[e402a4e95d47e40d]::passes::analysis::{closure#1}>
62: 0x7f5402359519 - rustc_interface[e402a4e95d47e40d]::passes::analysis
63: 0x7f540237d5ea - rustc_query_impl[e4e476eeb45651d1]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e4e476eeb45651d1]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[7266ccbfd6f08af0]::query::erase::Erased<[u8; 1usize]>>
64: 0x7f540237d5d9 - <rustc_query_impl[e4e476eeb45651d1]::query_impl::analysis::dynamic_query::{closure#2} as core[91a7ba3c96b8fb6a]::ops::function::FnOnce<(rustc_middle[7266ccbfd6f08af0]::ty::context::TyCtxt, ())>>::call_once
65: 0x7f540263bc64 - rustc_query_system[44d60dfb7090b806]::query::plumbing::try_execute_query::<rustc_query_impl[e4e476eeb45651d1]::DynamicConfig<rustc_query_system[44d60dfb7090b806]::query::caches::SingleCache<rustc_middle[7266ccbfd6f08af0]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[e4e476eeb45651d1]::plumbing::QueryCtxt, false>
66: 0x7f540263b9d9 - rustc_query_impl[e4e476eeb45651d1]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
67: 0x7f540240df33 - <rustc_middle[7266ccbfd6f08af0]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[421f961c2abd6a6c]::run_compiler::{closure#1}::{closure#2}::{closure#6}, core[91a7ba3c96b8fb6a]::result::Result<(), rustc_span[e182e80647a6f439]::ErrorGuaranteed>>
68: 0x7f540240d03c - <rustc_interface[e402a4e95d47e40d]::interface::Compiler>::enter::<rustc_driver_impl[421f961c2abd6a6c]::run_compiler::{closure#1}::{closure#2}, core[91a7ba3c96b8fb6a]::result::Result<core[91a7ba3c96b8fb6a]::option::Option<rustc_interface[e402a4e95d47e40d]::queries::Linker>, rustc_span[e182e80647a6f439]::ErrorGuaranteed>>
69: 0x7f5402404a38 - std[2ba0c775535575e]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[e402a4e95d47e40d]::util::run_in_thread_with_globals<rustc_interface[e402a4e95d47e40d]::interface::run_compiler<core[91a7ba3c96b8fb6a]::result::Result<(), rustc_span[e182e80647a6f439]::ErrorGuaranteed>, rustc_driver_impl[421f961c2abd6a6c]::run_compiler::{closure#1}>::{closure#0}, core[91a7ba3c96b8fb6a]::result::Result<(), rustc_span[e182e80647a6f439]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[91a7ba3c96b8fb6a]::result::Result<(), rustc_span[e182e80647a6f439]::ErrorGuaranteed>>
70: 0x7f54024041ae - <<std[2ba0c775535575e]::thread::Builder>::spawn_unchecked_<rustc_interface[e402a4e95d47e40d]::util::run_in_thread_with_globals<rustc_interface[e402a4e95d47e40d]::interface::run_compiler<core[91a7ba3c96b8fb6a]::result::Result<(), rustc_span[e182e80647a6f439]::ErrorGuaranteed>, rustc_driver_impl[421f961c2abd6a6c]::run_compiler::{closure#1}>::{closure#0}, core[91a7ba3c96b8fb6a]::result::Result<(), rustc_span[e182e80647a6f439]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[91a7ba3c96b8fb6a]::result::Result<(), rustc_span[e182e80647a6f439]::ErrorGuaranteed>>::{closure#1} as core[91a7ba3c96b8fb6a]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
71: 0x7f53ffd4ad35 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hc5c2793cdb16fd0c
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/alloc/src/boxed.rs:2007:9
72: 0x7f53ffd4ad35 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd102196bf71bb167
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/alloc/src/boxed.rs:2007:9
73: 0x7f53ffd4ad35 - std::sys::unix::thread::Thread::new::thread_start::hd2018bce9981ca61
at /rustc/a991861ec9fd8aedffbe5744a8852c7c64dd40b2/library/std/src/sys/unix/thread.rs:108:17
74: 0x7f53ffc0b609 - start_thread
75: 0x7f53ffb30133 - clone
76: 0x0 - <unknown>
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 attach the file at `/home/code/rustc-ice-2023-09-06T08:50:10.652342838Z-233.txt` to your bug report
query stack during panic:
#0 [mir_built] building MIR for `main`
#1 [unsafety_check_result] unsafety-checking `main`
#2 [mir_const] preparing `main` for borrow checking
#3 [mir_promoted] promoting constants in MIR for `main`
#4 [mir_borrowck] borrow-checking `main`
#5 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to previous error; 1 warning emitted