Closed
Description
const HUGE_SIZE: usize = usize::max_value() / 8;
pub struct TooBigArray {
arr: [u8; HUGE_SIZE],
}
impl TooBigArray {
pub const fn new() -> Self {
TooBigArray { arr: [0x00; HUGE_SIZE], }
}
}
static MY_TOO_BIG_ARRAY: TooBigArray = TooBigArray::new();
fn main() {
println!("Hello, world!, {}", MY_TOO_BIG_ARRAY.arr[0]);
}
Gives:
error: internal compiler error: src/librustc_mir/const_eval.rs:698: static eval failure didn't emit an error: Reported
--> src/main.rs:13:1
|
13 | static MY_TOO_BIG_ARRAY: TooBigArray = TooBigArray::new();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
thread 'main' panicked at 'Box<Any>', src/librustc_errors/lib.rs:538:9
Backtrace
thread 'main' panicked at 'Box<Any>', src/librustc_errors/lib.rs:538:9
stack backtrace:
0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
1: std::sys_common::backtrace::_print
at src/libstd/sys_common/backtrace.rs:71
2: std::panicking::default_hook::{{closure}}
at src/libstd/sys_common/backtrace.rs:59
at src/libstd/panicking.rs:210
3: std::panicking::default_hook
at src/libstd/panicking.rs:224
4: rustc::util::common::panic_hook
5: std::panicking::rust_panic_with_hook
at src/libstd/panicking.rs:491
6: std::panicking::begin_panic
7: rustc_errors::Handler::span_bug
8: rustc::util::bug::opt_span_bug_fmt::{{closure}}
9: rustc::ty::context::tls::with_opt::{{closure}}
10: rustc::ty::context::tls::with_context_opt
11: rustc::ty::context::tls::with_opt
12: rustc::util::bug::opt_span_bug_fmt
13: rustc::util::bug::span_bug_fmt
14: rustc_mir::const_eval::const_eval_raw_provider
15: rustc::ty::query::__query_compute::const_eval_raw
16: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors<'tcx> for rustc::ty::query::queries::const_eval_raw<'tcx>>::compute
17: rustc::ty::context::tls::with_context
18: rustc::dep_graph::graph::DepGraph::with_task_impl
19: <rustc::ty::query::plumbing::JobOwner<'a, 'tcx, Q>>::start
20: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job
21: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query
22: rustc::ty::query::<impl rustc::ty::context::TyCtxt<'a, 'tcx, 'lcx>>::const_eval_raw
23: rustc_mir::const_eval::const_eval_provider
24: rustc::ty::query::__query_compute::const_eval
25: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors<'tcx> for rustc::ty::query::queries::const_eval<'tcx>>::compute
26: rustc::ty::context::tls::with_context
27: rustc::dep_graph::graph::DepGraph::with_task_impl
28: <rustc::ty::query::plumbing::JobOwner<'a, 'tcx, Q>>::start
29: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job
30: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query
31: rustc::ty::query::<impl rustc::ty::context::TyCtxt<'a, 'tcx, 'lcx>>::const_eval
32: rustc_mir::const_eval::const_eval_provider
33: rustc::ty::query::__query_compute::const_eval
34: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors<'tcx> for rustc::ty::query::queries::const_eval<'tcx>>::compute
35: rustc::ty::context::tls::with_context
36: rustc::dep_graph::graph::DepGraph::with_task_impl
37: <rustc::ty::query::plumbing::JobOwner<'a, 'tcx, Q>>::start
38: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::force_query_with_job
39: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt<'a, 'gcx, 'tcx>>::get_query
40: rustc::ty::query::<impl rustc::ty::context::TyCtxt<'a, 'tcx, 'lcx>>::const_eval
41: rustc_lint::builtin::check_const
42: <rustc_lint::register_builtins::BuiltinCombinedLateLintPass as rustc::lint::LateLintPass<'a, 'tcx>>::check_item
43: <rustc::lint::context::LateContext<'a, 'tcx> as rustc::hir::intravisit::Visitor<'tcx>>::visit_item
44: <rustc::lint::context::LateContext<'a, 'tcx> as rustc::hir::intravisit::Visitor<'tcx>>::visit_mod
45: rustc::hir::intravisit::walk_crate
46: rustc::lint::context::check_crate
47: rustc::util::common::time
48: rustc::ty::context::tls::enter_context
49: <std::thread::local::LocalKey<T>>::with
50: rustc::ty::context::TyCtxt::create_and_enter
51: rustc_driver::driver::compile_input
52: rustc_driver::run_compiler_with_pool
53: <scoped_tls::ScopedKey<T>>::set
54: rustc_driver::run_compiler
55: rustc_driver::monitor::{{closure}}
56: __rust_maybe_catch_panic
at src/libpanic_unwind/lib.rs:102
57: rustc_driver::run
58: rustc_driver::main
59: std::rt::lang_start::{{closure}}
60: std::panicking::try::do_call
at src/libstd/rt.rs:59
at src/libstd/panicking.rs:306
61: __rust_maybe_catch_panic
at src/libpanic_unwind/lib.rs:102
62: std::rt::lang_start_internal
at src/libstd/panicking.rs:285
at src/libstd/panic.rs:398
at src/libstd/rt.rs:58
63: main
64: __libc_start_main
65: <unknown>
query stack during panic:
#0 [const_eval_raw] const-evaluating `MY_TOO_BIG_ARRAY`
#1 [const_eval] const-evaluating + checking `MY_TOO_BIG_ARRAY`
#2 [const_eval] const-evaluating + checking `MY_TOO_BIG_ARRAY`
end of query stack
error: aborting due to previous error
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 1.32.0-nightly (4a45578bc 2018-12-07) running on x86_64-unknown-linux-gnu
note: compiler flags: -C debuginfo=2 -C incremental --crate-type bin
note: some of the compiler flags provided by cargo are hidden
error: Could not compile `rustc-ice`.
To learn more, run the command again with --verbose.
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Area: Constant evaluation, covers all const contexts (static, const fn, ...)Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Relevant to the compiler team, which will review and decide on the PR/issue.Performance or correctness regression from one stable version to another.