ICE: panicked at 'forcing query with already existing `DepNode`'

[djc]

Code

For now I only have a branch, which can be found at https://github.com/InstantDomain/instant-xml/tree/ice-2. To reproduce, run cargo test with either stable (currently 1.63.0) or nightly. Using CARGO_INCREMENTAL=0 makes the problem go away. cargo clean doesn't help.

Meta

rustc --version --verbose:

cargo 1.65.0-nightly (4ed54cecc 2022-08-27)
release: 1.65.0-nightly
commit-hash: 4ed54cecce3ce9ab6ff058781f4c8a500ee6b8b5
commit-date: 2022-08-27
host: aarch64-apple-darwin
libgit2: 1.5.0 (sys:0.15.0 vendored)
libcurl: 7.79.1 (sys:0.4.55+curl-7.83.1 system ssl:(SecureTransport) LibreSSL/3.3.6)
os: Mac OS 12.5.1 [64-bit]

Error output

thread 'rustc' panicked at 'forcing query with already existing `DepNode`
- query-key: ParamEnvAnd { param_env: ParamEnv { caller_bounds: [], reveal: UserFacing, constness: NotConst }, value: Val(ByRef { alloc: Allocation { bytes: [0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0], relocations: Relocations(SortedMap { data: [(Size(0 bytes), alloc5), (Size(16 bytes), alloc27)] }), init_mask: InitMask { blocks: [4294967295], len: Size(32 bytes) }, align: Align(8 bytes), mutability: Not, extra: () }, offset: Size(0 bytes) }, instant_xml::de::Id) }
- dep-node: try_destructure_mir_constant(bc0148d6ccb6596f-ed23fac1cbe20fc0)', /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/compiler/rustc_query_system/src/dep_graph/graph.rs:300:9

Backtrace

stack backtrace:
   0:        0x102d2bfe0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h188b7ef1c7993e78
   1:        0x102d7da54 - core::fmt::write::he84a3004e7af3f34
   2:        0x102d1f0c0 - std::io::Write::write_fmt::h9370b50affaab0be
   3:        0x102d2ec24 - std::panicking::default_hook::{{closure}}::hc074f8023cce83ca
   4:        0x102d2e98c - std::panicking::default_hook::hef854b51b9b79ff2
   5:        0x10a19c154 - rustc_driver[8d2050f8429f7bc4]::DEFAULT_HOOK::{closure#0}::{closure#0}
   6:        0x102d2f1f8 - std::panicking::rust_panic_with_hook::h1e59e224d558a492
   7:        0x102d2f090 - std::panicking::begin_panic_handler::{{closure}}::he1a9d6ab32bfd8c6
   8:        0x102d2c4bc - std::sys_common::backtrace::__rust_end_short_backtrace::he9b94791b02f48cd
   9:        0x102d2ede8 - _rust_begin_unwind
  10:        0x102dab968 - core::panicking::panic_fmt::h9fec86f6a9c4146e
  11:        0x10d1880d8 - <rustc_query_system[f18d9eae22d44560]::dep_graph::graph::DepGraph<rustc_middle[4fa9dd76776bb2aa]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[4fa9dd76776bb2aa]::ty::context::TyCtxt, rustc_middle[4fa9dd76776bb2aa]::ty::ParamEnvAnd<rustc_middle[4fa9dd76776bb2aa]::mir::ConstantKind>, core[bae5e8ef542d20e5]::option::Option<rustc_middle[4fa9dd76776bb2aa]::mir::query::DestructuredMirConstant>>
  12:        0x10d01fadc - rustc_query_system[f18d9eae22d44560]::query::plumbing::get_query::<rustc_query_impl[d9716e6ec5023784]::queries::try_destructure_mir_constant, rustc_query_impl[d9716e6ec5023784]::plumbing::QueryCtxt>
  13:        0x10d26fd40 - <rustc_query_impl[d9716e6ec5023784]::Queries as rustc_middle[4fa9dd76776bb2aa]::ty::query::QueryEngine>::try_destructure_mir_constant
  14:        0x10dcb7f74 - <rustc_middle[4fa9dd76776bb2aa]::ty::context::TyCtxt>::destructure_mir_constant
  15:        0x10caac1d0 - <rustc_mir_build[d8c711f153adeead]::thir::pattern::const_to_pat::ConstToPat>::recur
  16:        0x10caa1054 - <rustc_infer[b8df2f762d2af832]::infer::InferCtxtBuilder>::enter::<rustc_middle[4fa9dd76776bb2aa]::thir::Pat, <rustc_mir_build[d8c711f153adeead]::thir::pattern::PatCtxt>::const_to_pat::{closure#0}>
  17:        0x10cac9968 - <rustc_mir_build[d8c711f153adeead]::thir::pattern::PatCtxt>::const_to_pat
  18:        0x10caca058 - <rustc_mir_build[d8c711f153adeead]::thir::pattern::PatCtxt>::lower_path
  19:        0x10cac6da8 - <rustc_mir_build[d8c711f153adeead]::thir::pattern::PatCtxt>::lower_pattern
  20:        0x10ca9c1f0 - <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor>::lower_pattern
  21:        0x10ca91b84 - <alloc[60e9ff9c62c1e93b]::vec::Vec<rustc_mir_build[d8c711f153adeead]::thir::pattern::usefulness::MatchArm> as alloc[60e9ff9c62c1e93b]::vec::spec_from_iter::SpecFromIter<rustc_mir_build[d8c711f153adeead]::thir::pattern::usefulness::MatchArm, core[bae5e8ef542d20e5]::iter::adapters::map::Map<core[bae5e8ef542d20e5]::slice::iter::Iter<rustc_hir[f8f7f977ec6e9d12]::hir::Arm>, <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor>::check_match::{closure#0}>>>::from_iter
  22:        0x10ca9aea4 - <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor as rustc_hir[f8f7f977ec6e9d12]::intravisit::Visitor>::visit_expr
  23:        0x10ca9ad3c - <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor as rustc_hir[f8f7f977ec6e9d12]::intravisit::Visitor>::visit_expr
  24:        0x10ca6a6ec - rustc_hir[f8f7f977ec6e9d12]::intravisit::walk_stmt::<rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor>
  25:        0x10ca6a520 - rustc_hir[f8f7f977ec6e9d12]::intravisit::walk_expr::<rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor>
  26:        0x10ca9ad3c - <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor as rustc_hir[f8f7f977ec6e9d12]::intravisit::Visitor>::visit_expr
  27:        0x10ca6a4a0 - rustc_hir[f8f7f977ec6e9d12]::intravisit::walk_expr::<rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor>
  28:        0x10ca9ad3c - <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor as rustc_hir[f8f7f977ec6e9d12]::intravisit::Visitor>::visit_expr
  29:        0x10ca9ad3c - <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor as rustc_hir[f8f7f977ec6e9d12]::intravisit::Visitor>::visit_expr
  30:        0x10ca6a520 - rustc_hir[f8f7f977ec6e9d12]::intravisit::walk_expr::<rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor>
  31:        0x10ca9ad3c - <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor as rustc_hir[f8f7f977ec6e9d12]::intravisit::Visitor>::visit_expr
  32:        0x10ca9a960 - rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::check_match
  33:        0x10d1a8a9c - <rustc_query_system[f18d9eae22d44560]::dep_graph::graph::DepGraph<rustc_middle[4fa9dd76776bb2aa]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[4fa9dd76776bb2aa]::ty::context::TyCtxt, rustc_span[143ffa354e326ede]::def_id::DefId, ()>
  34:        0x10cf7ee9c - rustc_query_system[f18d9eae22d44560]::query::plumbing::try_execute_query::<rustc_query_impl[d9716e6ec5023784]::plumbing::QueryCtxt, rustc_query_system[f18d9eae22d44560]::query::caches::DefaultCache<rustc_span[143ffa354e326ede]::def_id::DefId, ()>>
  35:        0x10cfe0de8 - rustc_query_system[f18d9eae22d44560]::query::plumbing::get_query::<rustc_query_impl[d9716e6ec5023784]::queries::check_match, rustc_query_impl[d9716e6ec5023784]::plumbing::QueryCtxt>
  36:        0x10a243ebc - <rustc_middle[4fa9dd76776bb2aa]::hir::map::Map>::par_body_owners::<rustc_interface[db32075e2a9c594e]::passes::analysis::{closure#1}::{closure#0}::{closure#0}::{closure#0}>
  37:        0x10a235ec8 - <rustc_session[282d64e95cd3bf88]::session::Session>::time::<(), rustc_interface[db32075e2a9c594e]::passes::analysis::{closure#1}::{closure#0}::{closure#0}>
  38:        0x10a237d7c - <rustc_session[282d64e95cd3bf88]::session::Session>::time::<(), rustc_interface[db32075e2a9c594e]::passes::analysis::{closure#1}>
  39:        0x10a227f44 - rustc_interface[db32075e2a9c594e]::passes::analysis
thread 'rustc' panicked at 'forcing query with already existing `DepNode`
- query-key: ParamEnvAnd { param_env: ParamEnv { caller_bounds: [], reveal: UserFacing, constness: NotConst }, value: Val(ByRef { alloc: Allocation { bytes: [0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0], relocations: Relocations(SortedMap { data: [(Size(0 bytes), alloc88), (Size(16 bytes), alloc89)] }), init_mask: InitMask { blocks: [4294967295], len: Size(32 bytes) }, align: Align(8 bytes), mutability: Not, extra: () }, offset: Size(0 bytes) }, instant_xml::de::Id) }
- dep-node: try_destructure_mir_constant(bc0148d6ccb6596f-ed23fac1cbe20fc0)', /rustc/4b91a6ea7258a947e59c6522cd5898e7c0a6a88f/compiler/rustc_query_system/src/dep_graph/graph.rs:300:9
stack backtrace:
  40:        0x10d1b7b48 - <rustc_query_system[f18d9eae22d44560]::dep_graph::graph::DepGraph<rustc_middle[4fa9dd76776bb2aa]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[4fa9dd76776bb2aa]::ty::context::TyCtxt, (), core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>
  41:        0x10cf8c5d0 - rustc_query_system[f18d9eae22d44560]::query::plumbing::try_execute_query::<rustc_query_impl[d9716e6ec5023784]::plumbing::QueryCtxt, rustc_query_system[f18d9eae22d44560]::query::caches::DefaultCache<(), core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>>
  42:        0x10d02b54c - rustc_query_system[f18d9eae22d44560]::query::plumbing::get_query::<rustc_query_impl[d9716e6ec5023784]::queries::analysis, rustc_query_impl[d9716e6ec5023784]::plumbing::QueryCtxt>
   0:        0x1014e7fe0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h188b7ef1c7993e78
   1:        0x101539a54 - core::fmt::write::he84a3004e7af3f34
   2:        0x1014db0c0 - std::io::Write::write_fmt::h9370b50affaab0be
   3:        0x1014eac24 - std::panicking::default_hook::{{closure}}::hc074f8023cce83ca
  43:        0x10a15e66c - <rustc_interface[db32075e2a9c594e]::passes::QueryContext>::enter::<rustc_driver[8d2050f8429f7bc4]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>
  44:        0x10a1417f0 - <rustc_interface[db32075e2a9c594e]::interface::Compiler>::enter::<rustc_driver[8d2050f8429f7bc4]::run_compiler::{closure#1}::{closure#2}, core[bae5e8ef542d20e5]::result::Result<core[bae5e8ef542d20e5]::option::Option<rustc_interface[db32075e2a9c594e]::queries::Linker>, rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>
  45:        0x10a12dbb4 - rustc_span[143ffa354e326ede]::with_source_map::<core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>, rustc_interface[db32075e2a9c594e]::interface::create_compiler_and_run<core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>, rustc_driver[8d2050f8429f7bc4]::run_compiler::{closure#1}>::{closure#1}>
  46:        0x10a141fe8 - <scoped_tls[e8c526b3ddc66487]::ScopedKey<rustc_span[143ffa354e326ede]::SessionGlobals>>::set::<rustc_interface[db32075e2a9c594e]::interface::run_compiler<core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>, rustc_driver[8d2050f8429f7bc4]::run_compiler::{closure#1}>::{closure#0}, core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>
   4:        0x1014ea98c - std::panicking::default_hook::hef854b51b9b79ff2
  47:        0x10a18cb68 - std[ad4c17a2ddbcabe2]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[db32075e2a9c594e]::util::run_in_thread_pool_with_globals<rustc_interface[db32075e2a9c594e]::interface::run_compiler<core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>, rustc_driver[8d2050f8429f7bc4]::run_compiler::{closure#1}>::{closure#0}, core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>::{closure#0}, core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>
  48:        0x10a160ef8 - <<std[ad4c17a2ddbcabe2]::thread::Builder>::spawn_unchecked_<rustc_interface[db32075e2a9c594e]::util::run_in_thread_pool_with_globals<rustc_interface[db32075e2a9c594e]::interface::run_compiler<core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>, rustc_driver[8d2050f8429f7bc4]::run_compiler::{closure#1}>::{closure#0}, core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>::{closure#0}, core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>::{closure#1} as core[bae5e8ef542d20e5]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  49:        0x102d37a5c - std::sys::unix::thread::Thread::new::thread_start::h7b2f9b83fb320a20
  50:        0x1bc56026c - __pthread_deallocate

error: internal compiler error: unexpected panic

note: 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 1.63.0 (4b91a6ea7 2022-08-08) running on aarch64-apple-darwin

note: compiler flags: -C embed-bitcode=no -C split-debuginfo=unpacked -C debuginfo=2 -C incremental

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [try_destructure_mir_constant] destructuring mir constant
#1 [check_match] match-checking `<impl at instant-xml/tests/de-nested.rs:12:32: 12:39>::deserialize`
#2 [analysis] running analysis passes on this crate
end of query stack
error: could not compile `instant-xml`
warning: build failed, waiting for other jobs to finish...
   5:        0x108958154 - rustc_driver[8d2050f8429f7bc4]::DEFAULT_HOOK::{closure#0}::{closure#0}
   6:        0x1014eb1f8 - std::panicking::rust_panic_with_hook::h1e59e224d558a492
   7:        0x1014eb090 - std::panicking::begin_panic_handler::{{closure}}::he1a9d6ab32bfd8c6
   8:        0x1014e84bc - std::sys_common::backtrace::__rust_end_short_backtrace::he9b94791b02f48cd
   9:        0x1014eade8 - _rust_begin_unwind
  10:        0x101567968 - core::panicking::panic_fmt::h9fec86f6a9c4146e
  11:        0x10b9440d8 - <rustc_query_system[f18d9eae22d44560]::dep_graph::graph::DepGraph<rustc_middle[4fa9dd76776bb2aa]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[4fa9dd76776bb2aa]::ty::context::TyCtxt, rustc_middle[4fa9dd76776bb2aa]::ty::ParamEnvAnd<rustc_middle[4fa9dd76776bb2aa]::mir::ConstantKind>, core[bae5e8ef542d20e5]::option::Option<rustc_middle[4fa9dd76776bb2aa]::mir::query::DestructuredMirConstant>>
  12:        0x10b7dbadc - rustc_query_system[f18d9eae22d44560]::query::plumbing::get_query::<rustc_query_impl[d9716e6ec5023784]::queries::try_destructure_mir_constant, rustc_query_impl[d9716e6ec5023784]::plumbing::QueryCtxt>
  13:        0x10ba2bd40 - <rustc_query_impl[d9716e6ec5023784]::Queries as rustc_middle[4fa9dd76776bb2aa]::ty::query::QueryEngine>::try_destructure_mir_constant
  14:        0x10c473f74 - <rustc_middle[4fa9dd76776bb2aa]::ty::context::TyCtxt>::destructure_mir_constant
  15:        0x10b2681d0 - <rustc_mir_build[d8c711f153adeead]::thir::pattern::const_to_pat::ConstToPat>::recur
  16:        0x10b25d054 - <rustc_infer[b8df2f762d2af832]::infer::InferCtxtBuilder>::enter::<rustc_middle[4fa9dd76776bb2aa]::thir::Pat, <rustc_mir_build[d8c711f153adeead]::thir::pattern::PatCtxt>::const_to_pat::{closure#0}>
  17:        0x10b285968 - <rustc_mir_build[d8c711f153adeead]::thir::pattern::PatCtxt>::const_to_pat
  18:        0x10b286058 - <rustc_mir_build[d8c711f153adeead]::thir::pattern::PatCtxt>::lower_path
  19:        0x10b282da8 - <rustc_mir_build[d8c711f153adeead]::thir::pattern::PatCtxt>::lower_pattern
  20:        0x10b2581f0 - <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor>::lower_pattern
  21:        0x10b24db84 - <alloc[60e9ff9c62c1e93b]::vec::Vec<rustc_mir_build[d8c711f153adeead]::thir::pattern::usefulness::MatchArm> as alloc[60e9ff9c62c1e93b]::vec::spec_from_iter::SpecFromIter<rustc_mir_build[d8c711f153adeead]::thir::pattern::usefulness::MatchArm, core[bae5e8ef542d20e5]::iter::adapters::map::Map<core[bae5e8ef542d20e5]::slice::iter::Iter<rustc_hir[f8f7f977ec6e9d12]::hir::Arm>, <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor>::check_match::{closure#0}>>>::from_iter
  22:        0x10b256ea4 - <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor as rustc_hir[f8f7f977ec6e9d12]::intravisit::Visitor>::visit_expr
  23:        0x10b256d3c - <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor as rustc_hir[f8f7f977ec6e9d12]::intravisit::Visitor>::visit_expr
  24:        0x10b2266ec - rustc_hir[f8f7f977ec6e9d12]::intravisit::walk_stmt::<rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor>
  25:        0x10b226520 - rustc_hir[f8f7f977ec6e9d12]::intravisit::walk_expr::<rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor>
  26:        0x10b256d3c - <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor as rustc_hir[f8f7f977ec6e9d12]::intravisit::Visitor>::visit_expr
  27:        0x10b2264a0 - rustc_hir[f8f7f977ec6e9d12]::intravisit::walk_expr::<rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor>
  28:        0x10b256d3c - <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor as rustc_hir[f8f7f977ec6e9d12]::intravisit::Visitor>::visit_expr
  29:        0x10b256d3c - <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor as rustc_hir[f8f7f977ec6e9d12]::intravisit::Visitor>::visit_expr
  30:        0x10b226520 - rustc_hir[f8f7f977ec6e9d12]::intravisit::walk_expr::<rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor>
  31:        0x10b256d3c - <rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::MatchVisitor as rustc_hir[f8f7f977ec6e9d12]::intravisit::Visitor>::visit_expr
  32:        0x10b256960 - rustc_mir_build[d8c711f153adeead]::thir::pattern::check_match::check_match
  33:        0x10b964a9c - <rustc_query_system[f18d9eae22d44560]::dep_graph::graph::DepGraph<rustc_middle[4fa9dd76776bb2aa]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[4fa9dd76776bb2aa]::ty::context::TyCtxt, rustc_span[143ffa354e326ede]::def_id::DefId, ()>
  34:        0x10b73ae9c - rustc_query_system[f18d9eae22d44560]::query::plumbing::try_execute_query::<rustc_query_impl[d9716e6ec5023784]::plumbing::QueryCtxt, rustc_query_system[f18d9eae22d44560]::query::caches::DefaultCache<rustc_span[143ffa354e326ede]::def_id::DefId, ()>>
  35:        0x10b79cde8 - rustc_query_system[f18d9eae22d44560]::query::plumbing::get_query::<rustc_query_impl[d9716e6ec5023784]::queries::check_match, rustc_query_impl[d9716e6ec5023784]::plumbing::QueryCtxt>
  36:        0x1089ffebc - <rustc_middle[4fa9dd76776bb2aa]::hir::map::Map>::par_body_owners::<rustc_interface[db32075e2a9c594e]::passes::analysis::{closure#1}::{closure#0}::{closure#0}::{closure#0}>
  37:        0x1089f1ec8 - <rustc_session[282d64e95cd3bf88]::session::Session>::time::<(), rustc_interface[db32075e2a9c594e]::passes::analysis::{closure#1}::{closure#0}::{closure#0}>
  38:        0x1089f3d7c - <rustc_session[282d64e95cd3bf88]::session::Session>::time::<(), rustc_interface[db32075e2a9c594e]::passes::analysis::{closure#1}>
  39:        0x1089e3f44 - rustc_interface[db32075e2a9c594e]::passes::analysis
  40:        0x10b973b48 - <rustc_query_system[f18d9eae22d44560]::dep_graph::graph::DepGraph<rustc_middle[4fa9dd76776bb2aa]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[4fa9dd76776bb2aa]::ty::context::TyCtxt, (), core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>
  41:        0x10b7485d0 - rustc_query_system[f18d9eae22d44560]::query::plumbing::try_execute_query::<rustc_query_impl[d9716e6ec5023784]::plumbing::QueryCtxt, rustc_query_system[f18d9eae22d44560]::query::caches::DefaultCache<(), core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>>
  42:        0x10b7e754c - rustc_query_system[f18d9eae22d44560]::query::plumbing::get_query::<rustc_query_impl[d9716e6ec5023784]::queries::analysis, rustc_query_impl[d9716e6ec5023784]::plumbing::QueryCtxt>
  43:        0x10891a66c - <rustc_interface[db32075e2a9c594e]::passes::QueryContext>::enter::<rustc_driver[8d2050f8429f7bc4]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>
  44:        0x1088fd7f0 - <rustc_interface[db32075e2a9c594e]::interface::Compiler>::enter::<rustc_driver[8d2050f8429f7bc4]::run_compiler::{closure#1}::{closure#2}, core[bae5e8ef542d20e5]::result::Result<core[bae5e8ef542d20e5]::option::Option<rustc_interface[db32075e2a9c594e]::queries::Linker>, rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>
  45:        0x1088e9bb4 - rustc_span[143ffa354e326ede]::with_source_map::<core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>, rustc_interface[db32075e2a9c594e]::interface::create_compiler_and_run<core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>, rustc_driver[8d2050f8429f7bc4]::run_compiler::{closure#1}>::{closure#1}>
  46:        0x1088fdfe8 - <scoped_tls[e8c526b3ddc66487]::ScopedKey<rustc_span[143ffa354e326ede]::SessionGlobals>>::set::<rustc_interface[db32075e2a9c594e]::interface::run_compiler<core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>, rustc_driver[8d2050f8429f7bc4]::run_compiler::{closure#1}>::{closure#0}, core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>
  47:        0x108948b68 - std[ad4c17a2ddbcabe2]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[db32075e2a9c594e]::util::run_in_thread_pool_with_globals<rustc_interface[db32075e2a9c594e]::interface::run_compiler<core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>, rustc_driver[8d2050f8429f7bc4]::run_compiler::{closure#1}>::{closure#0}, core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>::{closure#0}, core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>
  48:        0x10891cef8 - <<std[ad4c17a2ddbcabe2]::thread::Builder>::spawn_unchecked_<rustc_interface[db32075e2a9c594e]::util::run_in_thread_pool_with_globals<rustc_interface[db32075e2a9c594e]::interface::run_compiler<core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>, rustc_driver[8d2050f8429f7bc4]::run_compiler::{closure#1}>::{closure#0}, core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>::{closure#0}, core[bae5e8ef542d20e5]::result::Result<(), rustc_errors[3321b68084f70bb0]::ErrorGuaranteed>>::{closure#1} as core[bae5e8ef542d20e5]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  49:        0x1014f3a5c - std::sys::unix::thread::Thread::new::thread_start::h7b2f9b83fb320a20
  50:        0x1bc56026c - __pthread_deallocate

error: internal compiler error: unexpected panic

note: 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 1.63.0 (4b91a6ea7 2022-08-08) running on aarch64-apple-darwin

note: compiler flags: -C embed-bitcode=no -C split-debuginfo=unpacked -C debuginfo=2 -C incremental

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [try_destructure_mir_constant] destructuring mir constant
#1 [check_match] match-checking `<impl at instant-xml/tests/de-ns.rs:78:32: 78:39>::deserialize`
#2 [analysis] running analysis passes on this crate
end of query stack

#97858 had a similar error but seems to have been intermittent, while this reproduces every time.

@rustbot label +A-incr-comp +E-needs-mcve

cc @steffahn

[lqd]

Minimized:

#[derive(PartialEq, Eq)]
struct Id<'a> {
    ns: &'a str,
}
fn visit_struct() {
    let id = Id { ns: "random1" };
    const FLAG: Id<'static> = Id {
        ns: "needs_to_be_the_same",
    };
    match id {
        FLAG => {}
        _ => {}
    }
}
fn visit_struct2() {
    let id = Id { ns: "random2" };
    const FLAG: Id<'static> = Id {
        ns: "needs_to_be_the_same",
    };
    match id {
        FLAG => {}
        _ => {}
    }
}

godbolt shows it ICEs as far back as 1.42.0 from 03/2020.

[cjgillot]

Thanks for the MCVE. I suspect an issue with AllocId, like most issues that feature the same exact ICE. Working on a refactor to get this unstability out of the way.

[steffahn]

Ah, damn, I just minimized it, too xD

Looks roughly the same.

[steffahn]

@rustbot label S-bug-has-mcve

Note that it only ICEs with incremental compilation turned on (hence e.g. it doesnt reproduce on the playground.

[matthiaskrgr]

This is probably a duplicate of #83085