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ICE: const qualif failed to prevent mutable references with -Zmir-opt-level=3 #67640

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matthiaskrgr opened this issue Dec 26, 2019 · 0 comments · Fixed by #68170
Closed

ICE: const qualif failed to prevent mutable references with -Zmir-opt-level=3 #67640

matthiaskrgr opened this issue Dec 26, 2019 · 0 comments · Fixed by #68170
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C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-nightly This issue requires a nightly compiler in some way. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@matthiaskrgr
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matthiaskrgr commented Dec 26, 2019 •
edited

rustc src/test/ui/argument-passing.rs -Zmir-opt-level=3

file:

// run-pass

struct X {
    x: isize
}

fn f1(a: &mut X, b: &mut isize, c: isize) -> isize {
    let r = a.x + *b + c;
    a.x = 0;
    *b = 10;
    return r;
}

fn f2<F>(a: isize, f: F) -> isize where F: FnOnce(isize) { f(1); return a; }

pub fn main() {
    let mut a = X {x: 1};
    let mut b = 2;
    let c = 3;
    assert_eq!(f1(&mut a, &mut b, c), 6);
    assert_eq!(a.x, 0);
    assert_eq!(b, 10);
    assert_eq!(f2(a.x, |_| a.x = 50), 0);
    assert_eq!(a.x, 50);
}
error: internal compiler error: src/librustc_mir/interpret/intern.rs:223: const qualif failed to prevent mutable references

thread 'rustc' panicked at 'Box<Any>', src/librustc_errors/lib.rs:891:9
stack backtrace:
   0: backtrace::backtrace::libunwind::trace
             at /home/matthias/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/libunwind.rs:88
   1: backtrace::backtrace::trace_unsynchronized
             at /home/matthias/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/mod.rs:66
   2: std::sys_common::backtrace::_print_fmt
             at src/libstd/sys_common/backtrace.rs:77
   3: <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt
             at src/libstd/sys_common/backtrace.rs:59
   4: core::fmt::write
             at src/libcore/fmt/mod.rs:1057
   5: std::io::Write::write_fmt
             at src/libstd/io/mod.rs:1426
   6: std::sys_common::backtrace::_print
             at src/libstd/sys_common/backtrace.rs:62
   7: std::sys_common::backtrace::print
             at src/libstd/sys_common/backtrace.rs:49
   8: std::panicking::default_hook::{{closure}}
             at src/libstd/panicking.rs:195
   9: std::panicking::default_hook
             at src/libstd/panicking.rs:215
  10: <alloc::boxed::Box<F> as core::ops::function::Fn<A>>::call
             at /home/matthias/vcs/github/rust_debug_assertions/src/liballoc/boxed.rs:1029
  11: rustc_driver::report_ice
             at src/librustc_driver/lib.rs:1160
  12: std::panicking::rust_panic_with_hook
             at src/libstd/panicking.rs:476
  13: std::panicking::begin_panic
             at /home/matthias/vcs/github/rust_debug_assertions/src/libstd/panicking.rs:401
  14: rustc_errors::HandlerInner::bug
             at src/librustc_errors/lib.rs:891
  15: rustc_errors::Handler::bug
             at src/librustc_errors/lib.rs:651
  16: rustc::util::bug::opt_span_bug_fmt::{{closure}}
             at src/librustc/util/bug.rs:36
  17: rustc::ty::context::tls::with_opt::{{closure}}
             at src/librustc/ty/context.rs:1875
  18: rustc::ty::context::tls::with_context_opt
             at src/librustc/ty/context.rs:1827
  19: rustc::ty::context::tls::with_opt
             at src/librustc/ty/context.rs:1875
  20: rustc::util::bug::opt_span_bug_fmt
             at src/librustc/util/bug.rs:32
  21: rustc::util::bug::bug_fmt
             at src/librustc/util/bug.rs:12
  22: <rustc_mir::interpret::intern::InternVisitor<M> as rustc_mir::interpret::visitor::ValueVisitor<M>>::visit_primitive
             at src/librustc_mir/interpret/intern.rs:223
  23: rustc_mir::interpret::visitor::ValueVisitor::walk_value
             at src/librustc_mir/interpret/visitor.rs:271
  24: rustc_mir::interpret::visitor::ValueVisitor::visit_value
             at src/librustc_mir/interpret/visitor.rs:119
  25: rustc_mir::interpret::visitor::ValueVisitor::visit_field
             at src/librustc_mir/interpret/visitor.rs:151
  26: rustc_mir::interpret::visitor::ValueVisitor::walk_aggregate
             at src/librustc_mir/interpret/visitor.rs:200
  27: <rustc_mir::interpret::intern::InternVisitor<M> as rustc_mir::interpret::visitor::ValueVisitor<M>>::visit_aggregate
             at src/librustc_mir/interpret/intern.rs:180
  28: rustc_mir::interpret::visitor::ValueVisitor::walk_value
             at src/librustc_mir/interpret/visitor.rs:291
  29: rustc_mir::interpret::visitor::ValueVisitor::visit_value
             at src/librustc_mir/interpret/visitor.rs:119
  30: rustc_mir::interpret::intern::intern_const_alloc_recursive
             at src/librustc_mir/interpret/intern.rs:289
  31: rustc_mir::transform::const_prop::ConstPropagator::should_const_prop
             at src/librustc_mir/transform/const_prop.rs:662
  32: <rustc_mir::transform::const_prop::ConstPropagator as rustc::mir::visit::MutVisitor>::visit_statement
             at src/librustc_mir/transform/const_prop.rs:767
  33: rustc::mir::visit::MutVisitor::super_basic_block_data
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/mir/visit.rs:322
  34: rustc::mir::visit::MutVisitor::visit_basic_block_data
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/mir/visit.rs:93
  35: rustc::mir::visit::MutVisitor::super_body
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/mir/visit.rs:275
  36: rustc::mir::visit::MutVisitor::visit_body
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/mir/visit.rs:87
  37: <rustc_mir::transform::const_prop::ConstProp as rustc_mir::transform::MirPass>::run_pass
             at src/librustc_mir/transform/const_prop.rs:97
  38: rustc_mir::transform::run_passes::{{closure}}
             at src/librustc_mir/transform/mod.rs:171
  39: rustc_mir::transform::run_passes
             at src/librustc_mir/transform/mod.rs:178
  40: rustc_mir::transform::run_optimization_passes
             at src/librustc_mir/transform/mod.rs:273
  41: rustc_mir::transform::optimized_mir
             at src/librustc_mir/transform/mod.rs:343
  42: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::optimized_mir>::compute
             at src/librustc/ty/query/plumbing.rs:963
  43: rustc::dep_graph::graph::DepGraph::with_task_impl
             at src/librustc/dep_graph/graph.rs:325
  44: rustc::dep_graph::graph::DepGraph::with_task
             at src/librustc/dep_graph/graph.rs:193
  45: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::force_query_with_job::{{closure}}::{{closure}}
             at src/librustc/ty/query/plumbing.rs:543
  46: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::start_query::{{closure}}::{{closure}}
             at src/librustc/ty/query/plumbing.rs:267
  47: rustc::ty::context::tls::enter_context::{{closure}}
             at src/librustc/ty/context.rs:1766
  48: rustc::ty::context::tls::set_tlv
             at src/librustc/ty/context.rs:1699
  49: rustc::ty::context::tls::enter_context
             at src/librustc/ty/context.rs:1766
  50: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::start_query::{{closure}}
             at src/librustc/ty/query/plumbing.rs:267
  51: rustc::ty::context::tls::with_related_context::{{closure}}
             at src/librustc/ty/context.rs:1854
  52: rustc::ty::context::tls::with_context::{{closure}}
             at src/librustc/ty/context.rs:1838
  53: rustc::ty::context::tls::with_context_opt
             at src/librustc/ty/context.rs:1827
  54: rustc::ty::context::tls::with_context
             at src/librustc/ty/context.rs:1838
  55: rustc::ty::context::tls::with_related_context
             at src/librustc/ty/context.rs:1851
  56: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::start_query
             at src/librustc/ty/query/plumbing.rs:256
  57: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::force_query_with_job::{{closure}}
             at src/librustc/ty/query/plumbing.rs:533
  58: rustc::ty::query::plumbing::with_diagnostics
             at src/librustc/ty/query/plumbing.rs:201
  59: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::force_query_with_job
             at src/librustc/ty/query/plumbing.rs:532
  60: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
             at src/librustc/ty/query/plumbing.rs:369
  61: rustc::ty::query::TyCtxtAt::optimized_mir
             at src/librustc/ty/query/plumbing.rs:1048
  62: rustc::ty::query::<impl rustc::ty::context::TyCtxt>::optimized_mir
             at src/librustc/ty/query/plumbing.rs:1040
  63: rustc::ty::<impl rustc::ty::context::TyCtxt>::instance_mir
             at src/librustc/ty/mod.rs:2955
  64: rustc_mir::monomorphize::collector::collect_neighbours
             at src/librustc_mir/monomorphize/collector.rs:1221
  65: rustc_mir::monomorphize::collector::collect_items_rec
             at src/librustc_mir/monomorphize/collector.rs:381
  66: rustc_mir::monomorphize::collector::collect_crate_mono_items::{{closure}}::{{closure}}
             at src/librustc_mir/monomorphize/collector.rs:306
  67: core::iter::traits::iterator::Iterator::for_each::call::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/libcore/iter/traits/iterator.rs:652
  68: core::iter::traits::iterator::Iterator::fold::ok::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/libcore/iter/traits/iterator.rs:1900
  69: core::iter::traits::iterator::Iterator::try_fold
             at /home/matthias/vcs/github/rust_debug_assertions/src/libcore/iter/traits/iterator.rs:1776
  70: core::iter::traits::iterator::Iterator::fold
             at /home/matthias/vcs/github/rust_debug_assertions/src/libcore/iter/traits/iterator.rs:1903
  71: core::iter::traits::iterator::Iterator::for_each
             at /home/matthias/vcs/github/rust_debug_assertions/src/libcore/iter/traits/iterator.rs:655
  72: rustc_mir::monomorphize::collector::collect_crate_mono_items::{{closure}}
             at src/librustc_mir/monomorphize/collector.rs:304
  73: rustc::util::common::time_ext
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/util/common.rs:54
  74: rustc::util::common::time
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/util/common.rs:46
  75: rustc_mir::monomorphize::collector::collect_crate_mono_items
             at src/librustc_mir/monomorphize/collector.rs:303
  76: rustc_mir::monomorphize::partitioning::collect_and_partition_mono_items::{{closure}}
             at src/librustc_mir/monomorphize/partitioning.rs:870
  77: rustc::util::common::time_ext
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/util/common.rs:54
  78: rustc::util::common::time
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/util/common.rs:46
  79: rustc_mir::monomorphize::partitioning::collect_and_partition_mono_items
             at src/librustc_mir/monomorphize/partitioning.rs:869
  80: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::collect_and_partition_mono_items>::compute::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/query/plumbing.rs:971
  81: rustc::ty::query::__query_compute::collect_and_partition_mono_items
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/query/plumbing.rs:922
  82: rustc::dep_graph::graph::DepGraph::with_task_impl
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/dep_graph/graph.rs:325
  83: rustc::dep_graph::graph::DepGraph::with_eval_always_task
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/dep_graph/graph.rs:372
  84: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::force_query_with_job::{{closure}}::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/query/plumbing.rs:535
  85: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::start_query::{{closure}}::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/query/plumbing.rs:267
  86: rustc::ty::context::tls::enter_context::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1766
  87: rustc::ty::context::tls::set_tlv
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1699
  88: rustc::ty::context::tls::enter_context
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1766
  89: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::start_query::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/query/plumbing.rs:267
  90: rustc::ty::context::tls::with_related_context::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1854
  91: rustc::ty::context::tls::with_context::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1838
  92: rustc::ty::context::tls::with_context_opt
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1827
  93: rustc::ty::context::tls::with_context
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1838
  94: rustc::ty::context::tls::with_related_context
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1851
  95: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::start_query
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/query/plumbing.rs:256
  96: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::force_query_with_job::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/query/plumbing.rs:533
  97: rustc::ty::query::plumbing::with_diagnostics
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/query/plumbing.rs:201
  98: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::force_query_with_job
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/query/plumbing.rs:532
  99: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/query/plumbing.rs:369
 100: rustc::ty::query::TyCtxtAt::collect_and_partition_mono_items
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/query/plumbing.rs:1048
 101: rustc::ty::query::<impl rustc::ty::context::TyCtxt>::collect_and_partition_mono_items
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/query/plumbing.rs:1040
 102: rustc_codegen_ssa::base::codegen_crate
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc_codegen_ssa/base.rs:532
 103: <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_utils::codegen_backend::CodegenBackend>::codegen_crate
             at src/librustc_codegen_llvm/lib.rs:263
 104: rustc_interface::passes::start_codegen::{{closure}}
             at src/librustc_interface/passes.rs:985
 105: rustc::util::common::time_ext
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/util/common.rs:54
 106: rustc::util::common::time
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/util/common.rs:46
 107: rustc_interface::passes::start_codegen
             at src/librustc_interface/passes.rs:983
 108: rustc_interface::queries::Queries::ongoing_codegen::{{closure}}::{{closure}}
             at src/librustc_interface/queries.rs:282
 109: rustc_interface::passes::QueryContext::enter::{{closure}}
             at src/librustc_interface/passes.rs:711
 110: rustc::ty::context::tls::enter_global::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1789
 111: rustc::ty::context::tls::enter_context::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1766
 112: rustc::ty::context::tls::set_tlv
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1699
 113: rustc::ty::context::tls::enter_context
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1766
 114: rustc::ty::context::tls::enter_global
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1789
 115: rustc_interface::passes::QueryContext::enter
             at src/librustc_interface/passes.rs:711
 116: rustc_interface::queries::Queries::ongoing_codegen::{{closure}}
             at src/librustc_interface/queries.rs:276
 117: rustc_interface::queries::Query<T>::compute
             at src/librustc_interface/queries.rs:34
 118: rustc_interface::queries::Queries::ongoing_codegen
             at src/librustc_interface/queries.rs:274
 119: rustc_driver::run_compiler::{{closure}}::{{closure}}
             at src/librustc_driver/lib.rs:404
 120: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc_interface/queries.rs:332
 121: rustc_driver::run_compiler::{{closure}}
             at src/librustc_driver/lib.rs:295
 122: rustc_interface::interface::run_compiler_in_existing_thread_pool
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc_interface/interface.rs:184
 123: rustc_interface::interface::run_compiler::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc_interface/interface.rs:193
 124: rustc_interface::util::spawn_thread_pool::{{closure}}::{{closure}}::{{closure}}::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc_interface/util.rs:154
 125: rustc::ty::context::tls::with_thread_locals::{{closure}}::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1755
 126: std::thread::local::LocalKey<T>::try_with
             at /home/matthias/vcs/github/rust_debug_assertions/src/libstd/thread/local.rs:262
 127: std::thread::local::LocalKey<T>::with
             at /home/matthias/vcs/github/rust_debug_assertions/src/libstd/thread/local.rs:239
 128: rustc::ty::context::tls::with_thread_locals::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1747
 129: std::thread::local::LocalKey<T>::try_with
             at /home/matthias/vcs/github/rust_debug_assertions/src/libstd/thread/local.rs:262
 130: std::thread::local::LocalKey<T>::with
             at /home/matthias/vcs/github/rust_debug_assertions/src/libstd/thread/local.rs:239
 131: rustc::ty::context::tls::with_thread_locals
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc/ty/context.rs:1739
 132: rustc_interface::util::spawn_thread_pool::{{closure}}::{{closure}}::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc_interface/util.rs:154
 133: scoped_tls::ScopedKey<T>::set
             at /home/matthias/.cargo/registry/src/github.com-1ecc6299db9ec823/scoped-tls-1.0.0/src/lib.rs:137
 134: rustc_interface::util::spawn_thread_pool::{{closure}}::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc_interface/util.rs:150
 135: scoped_tls::ScopedKey<T>::set
             at /home/matthias/.cargo/registry/src/github.com-1ecc6299db9ec823/scoped-tls-1.0.0/src/lib.rs:137
 136: syntax::with_globals::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/libsyntax/lib.rs:60
 137: scoped_tls::ScopedKey<T>::set
             at /home/matthias/.cargo/registry/src/github.com-1ecc6299db9ec823/scoped-tls-1.0.0/src/lib.rs:137
 138: syntax::with_globals
             at /home/matthias/vcs/github/rust_debug_assertions/src/libsyntax/lib.rs:60
 139: rustc_interface::util::spawn_thread_pool::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc_interface/util.rs:149
 140: rustc_interface::util::scoped_thread::{{closure}}
             at /home/matthias/vcs/github/rust_debug_assertions/src/librustc_interface/util.rs:126
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: rustc 1.42.0-dev running on x86_64-unknown-linux-gnu

note: compiler flags: -Z mir-opt-level=3

query stack during panic:
#0 [optimized_mir] processing `main`
#1 [collect_and_partition_mono_items] collect_and_partition_mono_items
end of query stack

rustc @ bbf1372
@jonas-schievink jonas-schievink added C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-nightly This issue requires a nightly compiler in some way. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Dec 27, 2019
@wesleywiser wesleywiser mentioned this issue Jan 13, 2020
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bors added a commit that referenced this issue Jan 18, 2020
@bors
Auto merge of #68170 - wesleywiser:stop_const_prop_ref_taking, r=oli-obk
35b5157 
Turn off const propagation of ref taking

Fixes #67529
Fixes #67640
Fixes #67641
Fixes #67862

r? @oli-obk
@bors bors closed this as completed in 7f65475 Jan 18, 2020
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C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-nightly This issue requires a nightly compiler in some way. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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Turn off const propagation of ref taking wesleywiser/rust
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@matthiaskrgr @jonas-schievink