Skip to content

Combination of const generics, extra braces around a const generic parameter, and cross-crate use causes stack overflow #73120

New issue
New issue
Closed
#74392
Closed
Combination of const generics, extra braces around a const generic parameter, and cross-crate use causes stack overflow#73120
#74392
Labels
A-const-genericsArea: const generics (parameters and arguments)C-bugCategory: This is a bug.F-const_generics`#![feature(const_generics)]`I-crashIssue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.requires-nightlyThis issue requires a nightly compiler in some way.
@yvt

Description

@yvt
yvt
opened on Jun 8, 2020

Code

All files packaged in a single Gist: https://gist.github.com/yvt/2fec54f8012d512c59216b5d2ef82d63

lib1/src/lib.rs:

fn unused_function(_: <lib2::GenericType<42> as lib2::TypeFn>::Output) {}

lib2/src/lib.rs:

#![feature(const_generics)]

// All of these three items must be in `lib2` to reproduce the error

pub trait TypeFn {
    type Output;
}

pub struct GenericType<const B: i8>;

// Removing the braces around `42` resolves the crash
impl TypeFn for GenericType<{ 42 }> {
    type Output = ();
}

Meta

rustc --version --verbose:

$ rustc --version --verbose
rustc 1.46.0-nightly (0262de554 2020-06-07)
binary: rustc
commit-hash: 0262de554b4c4c5af346137bbb1664a3f6cf4df2
commit-date: 2020-06-07
host: x86_64-apple-darwin
release: 1.46.0-nightly
LLVM version: 10.0

Error output

$ cargo build -p lib1
   Compiling lib2 v0.1.0 (WORKSPACE_DIRECTORY/lib2)
warning: the feature `const_generics` is incomplete and may not be safe to use and/or cause compiler crashes
 --> lib2/src/lib.rs:1:12
  |
1 | #![feature(const_generics)]
  |            ^^^^^^^^^^^^^^
  |
  = note: `#[warn(incomplete_features)]` on by default
  = note: see issue #44580 <https://github.com/rust-lang/rust/issues/44580> for more information

warning: unnecessary braces around const expression
  --> lib2/src/lib.rs:10:29
   |
10 | impl TypeFn for GenericType<{ 42 }> {
   |                             ^^^^^^ help: remove these braces
   |
   = note: `#[warn(unused_braces)]` on by default

   Compiling lib1 v0.1.0 (WORKSPACE_DIRECTORY/lib1)
warning: 2 warnings emitted


thread 'rustc' has overflowed its stack
fatal runtime error: stack overflow
error: could not compile `lib1`.

Caused by:
  process didn't exit successfully: `rustc --crate-name lib1 --edition=2018 lib1/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -Cembed-bitcode=no -C debuginfo=2 -C metadata=ebc5fd98cbffda2d -C extra-filename=-ebc5fd98cbffda2d --out-dir WORKSPACE_DIRECTORY/target/debug/deps -C incremental=WORKSPACE_DIRECTORY/target/debug/incremental -L dependency=WORKSPACE_DIRECTORY/target/debug/deps --extern lib2=WORKSPACE_DIRECTORY/target/debug/deps/liblib2-493874d8e8624eee.rmeta -Ctarget-cpu=native` (signal: 6, SIGABRT: process abort signal)
Backtrace 

* thread #3, name = 'rustc', stop reason = EXC_BAD_ACCESS (code=2, address=0x70000bf08fd8)
    frame #0: 0x0000000104012a45 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::query::plumbing::get_query_impl::hd3f2c958d4983325 + 117
librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::query::plumbing::get_query_impl::hd3f2c958d4983325:
->  0x104012a45 <+117>: callq  0x1043d7c40               ; hashbrown::map::RawEntryBuilder$LT$K$C$V$C$S$GT$::from_key_hashed_nocheck::h1882771ccd1e27ac
    0x104012a4a <+122>: testq  %rax, %rax
    0x104012a4d <+125>: je     0x104012a9a               ; <+202>
    0x104012a4f <+127>: movq   (%rdx), %r13
Target 0: (rustc) stopped.
(lldb) bt
   ⋮
    frame #33112: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33113: 0x0000000103ed9710 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_const::hf809661716f1acc1 + 624
    frame #33114: 0x0000000103ee3741 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 3585
    frame #33115: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33116: 0x0000000103ecc85e librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::pretty::PrettyPrinter::pretty_print_type::h4387524258b381af + 3246
    frame #33117: 0x0000000103ee0014 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..pretty..PrettyPrinter$GT$::generic_delimiters::h6c7ec83bbc6cadbd + 196
    frame #33118: 0x0000000103ee334e librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 2574
    frame #33119: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33120: 0x0000000103ee2dc2 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 1154
    frame #33121: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33122: 0x0000000103ed9710 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_const::hf809661716f1acc1 + 624
    frame #33123: 0x0000000103ee3741 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 3585
    frame #33124: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33125: 0x0000000103ecc85e librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::pretty::PrettyPrinter::pretty_print_type::h4387524258b381af + 3246
    frame #33126: 0x0000000103ee0014 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..pretty..PrettyPrinter$GT$::generic_delimiters::h6c7ec83bbc6cadbd + 196
    frame #33127: 0x0000000103ee334e librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 2574
    frame #33128: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33129: 0x0000000103ee2dc2 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 1154
    frame #33130: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33131: 0x0000000103ed9710 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_const::hf809661716f1acc1 + 624
    frame #33132: 0x0000000103ee3741 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 3585
    frame #33133: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33134: 0x0000000103ecc85e librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::pretty::PrettyPrinter::pretty_print_type::h4387524258b381af + 3246
    frame #33135: 0x0000000103ee0014 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..pretty..PrettyPrinter$GT$::generic_delimiters::h6c7ec83bbc6cadbd + 196
    frame #33136: 0x0000000103ee334e librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 2574
    frame #33137: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33138: 0x0000000103ee2dc2 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 1154
    frame #33139: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33140: 0x0000000103ed9710 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_const::hf809661716f1acc1 + 624
    frame #33141: 0x0000000103ee3741 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 3585
    frame #33142: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33143: 0x0000000103ecc85e librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::pretty::PrettyPrinter::pretty_print_type::h4387524258b381af + 3246
    frame #33144: 0x0000000103ee0014 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..pretty..PrettyPrinter$GT$::generic_delimiters::h6c7ec83bbc6cadbd + 196
    frame #33145: 0x0000000103ee334e librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 2574
    frame #33146: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33147: 0x0000000103ee2dc2 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 1154
    frame #33148: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33149: 0x0000000103ed9710 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_const::hf809661716f1acc1 + 624
    frame #33150: 0x0000000103ee3741 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 3585
    frame #33151: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33152: 0x0000000103ecc85e librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::pretty::PrettyPrinter::pretty_print_type::h4387524258b381af + 3246
    frame #33153: 0x0000000103ee0014 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..pretty..PrettyPrinter$GT$::generic_delimiters::h6c7ec83bbc6cadbd + 196
    frame #33154: 0x0000000103ee334e librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 2574
    frame #33155: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33156: 0x0000000103ee2dc2 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 1154
    frame #33157: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33158: 0x0000000103ed9710 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_const::hf809661716f1acc1 + 624
    frame #33159: 0x0000000103ee3741 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 3585
    frame #33160: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33161: 0x0000000103ecc85e librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::pretty::PrettyPrinter::pretty_print_type::h4387524258b381af + 3246
    frame #33162: 0x0000000103ee0014 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..pretty..PrettyPrinter$GT$::generic_delimiters::h6c7ec83bbc6cadbd + 196
    frame #33163: 0x0000000103ee334e librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 2574
    frame #33164: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33165: 0x0000000103ee2dc2 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::Printer::default_print_def_path::hb1c921ff5df1618c + 1154
    frame #33166: 0x0000000103ed5f93 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_middle..ty..print..pretty..FmtPrinter$LT$F$GT$$u20$as$u20$rustc_middle..ty..print..Printer$GT$::print_def_path::h07a91b6275da5c3d + 307
    frame #33167: 0x000000010410fd4d librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::pretty::_$LT$impl$u20$rustc_middle..ty..context..TyCtxt$GT$::def_path_str_with_substs::hd9da408d11c00698 + 589
    frame #33168: 0x000000010410fae8 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::print::pretty::_$LT$impl$u20$rustc_middle..ty..context..TyCtxt$GT$::def_path_str::h1e77f3fb6d824890 + 24
    frame #33169: 0x0000000102f9f49d librustc_driver-554a90bb8f5bbcd2.dylib`rustc_mir::const_eval::eval_queries::const_eval_raw_provider::hcd83e0720d37c0c6 + 2237
    frame #33170: 0x0000000102f7aeae librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::query::_$LT$impl$u20$rustc_query_system..query..config..QueryAccessors$LT$rustc_middle..ty..context..TyCtxt$GT$$u20$for$u20$rustc_middle..ty..query..queries..const_eval_raw$GT$::compute::hc88fde68ba46a62f + 174
    frame #33171: 0x0000000102ee6b18 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::dep_graph::_$LT$impl$u20$rustc_query_system..dep_graph..DepKind$u20$for$u20$rustc_middle..dep_graph..dep_node..DepKind$GT$::with_deps::h3a7ac76932452edb + 552
    frame #33172: 0x00000001032480c3 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::dep_graph::graph::DepGraph$LT$K$GT$::with_task_impl::hfecd1af9d903c833 + 499
    frame #33173: 0x00000001031f94dc librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::query::plumbing::get_query_impl::_$u7b$$u7b$closure$u7d$$u7d$::hf71191fc0e0563d7 + 13020
    frame #33174: 0x0000000103160eda librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::query::plumbing::get_query_impl::h1bbfc7052d5badd0 + 666
    frame #33175: 0x0000000102f9df96 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_mir::const_eval::eval_queries::const_eval_validated_provider::ha8eebe66fdaa78eb + 1078
    frame #33176: 0x0000000102f7b3ae librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::query::_$LT$impl$u20$rustc_query_system..query..config..QueryAccessors$LT$rustc_middle..ty..context..TyCtxt$GT$$u20$for$u20$rustc_middle..ty..query..queries..const_eval_validated$GT$::compute::hb081941be75f1b63 + 174
    frame #33177: 0x0000000102ee9fc8 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::dep_graph::_$LT$impl$u20$rustc_query_system..dep_graph..DepKind$u20$for$u20$rustc_middle..dep_graph..dep_node..DepKind$GT$::with_deps::h9443e5bf6be539f9 + 552
    frame #33178: 0x000000010324241c librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::dep_graph::graph::DepGraph$LT$K$GT$::with_task_impl::ha234a93081be042a + 524
    frame #33179: 0x00000001031c0625 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::query::plumbing::get_query_impl::_$u7b$$u7b$closure$u7d$$u7d$::haac0ae58ccd86eca + 14677
    frame #33180: 0x000000010316179a librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::query::plumbing::get_query_impl::h262f148abf020033 + 666
    frame #33181: 0x0000000102f9dc5c librustc_driver-554a90bb8f5bbcd2.dylib`rustc_mir::const_eval::eval_queries::const_eval_validated_provider::ha8eebe66fdaa78eb + 252
    frame #33182: 0x0000000104131d35 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::query::_$LT$impl$u20$rustc_query_system..query..config..QueryAccessors$LT$rustc_middle..ty..context..TyCtxt$GT$$u20$for$u20$rustc_middle..ty..query..queries..const_eval_validated$GT$::compute::hb081941be75f1b63 + 117
    frame #33183: 0x0000000104357a98 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::dep_graph::_$LT$impl$u20$rustc_query_system..dep_graph..DepKind$u20$for$u20$rustc_middle..dep_graph..dep_node..DepKind$GT$::with_deps::h372f271f52ec2e29 + 552
    frame #33184: 0x0000000103f88bda librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::dep_graph::graph::DepGraph$LT$K$GT$::with_task_impl::hd92a2db015e9bded + 618
    frame #33185: 0x00000001040bfecb librustc_driver-554a90bb8f5bbcd2.dylib`rustc_data_structures::stack::ensure_sufficient_stack::h1d8564fe5a9966a7 + 747
    frame #33186: 0x0000000103fb1986 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::query::plumbing::get_query_impl::h38745a30039c0e7f + 9254
    frame #33187: 0x000000010410163a librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::mir::interpret::queries::_$LT$impl$u20$rustc_middle..ty..context..TyCtxt$GT$::const_eval_global_id::habfcc4865555b159 + 1034
    frame #33188: 0x00000001041011a2 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::mir::interpret::queries::_$LT$impl$u20$rustc_middle..ty..context..TyCtxt$GT$::const_eval_resolve::hb33050651722da8c + 194
    frame #33189: 0x0000000103b6552e librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_trait_selection..traits..project..AssocTypeNormalizer$u20$as$u20$rustc_middle..ty..fold..TypeFolder$GT$::fold_const::h8607ca14d1b47372 + 1406
    frame #33190: 0x0000000103c0aff0 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::fold::TypeFoldable::fold_with::h0206cf932955fca5 + 144
    frame #33191: 0x0000000103b1f8c2 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::structural_impls::_$LT$impl$u20$rustc_middle..ty..fold..TypeFoldable$u20$for$u20$$RF$rustc_middle..ty..TyS$GT$::super_fold_with::h95f909faed7eadb2 + 66
    frame #33192: 0x0000000103b64cce librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_trait_selection..traits..project..AssocTypeNormalizer$u20$as$u20$rustc_middle..ty..fold..TypeFolder$GT$::fold_ty::h6f37b9bd049fc9fe + 78
    frame #33193: 0x0000000103c0b0cc librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::fold::TypeFoldable::fold_with::h0206cf932955fca5 + 364
    frame #33194: 0x0000000103b64566 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_trait_selection::traits::project::AssocTypeNormalizer::fold::hb66cf8728de04af1 + 198
    frame #33195: 0x0000000103b63e68 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_trait_selection::traits::project::normalize_with_depth::hc6f6f7004bda5348 + 184
    frame #33196: 0x0000000103c22da6 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_trait_selection::traits::select::SelectionContext::match_impl::ha9aa8b5eac382fc5 + 1206
    frame #33197: 0x0000000103bd92bf librustc_driver-554a90bb8f5bbcd2.dylib`rustc_infer::infer::InferCtxt::probe::h85b60c58d28b53ce + 79
    frame #33198: 0x0000000103b5ba1e librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::trait_def::_$LT$impl$u20$rustc_middle..ty..context..TyCtxt$GT$::for_each_relevant_impl::h221f5a2affcca579 + 686
    frame #33199: 0x0000000103c17940 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_trait_selection::traits::select::candidate_assembly::_$LT$impl$u20$rustc_trait_selection..traits..select..SelectionContext$GT$::assemble_candidates_from_impls::h5ea707ea0302f74d + 144
    frame #33200: 0x0000000103c16d78 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_trait_selection::traits::select::candidate_assembly::_$LT$impl$u20$rustc_trait_selection..traits..select..SelectionContext$GT$::assemble_candidates::h6ff91a5380fe9020 + 3416
    frame #33201: 0x0000000103c1fbf0 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_trait_selection::traits::select::SelectionContext::candidate_from_obligation_no_cache::h1ae3377bcfa48f9d + 336
    frame #33202: 0x0000000103c98e82 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::dep_graph::_$LT$impl$u20$rustc_query_system..dep_graph..DepKind$u20$for$u20$rustc_middle..dep_graph..dep_node..DepKind$GT$::with_deps::h7f11cf3fedd9d96a + 178
    frame #33203: 0x0000000103b3f582 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::dep_graph::graph::DepGraph$LT$K$GT$::with_anon_task::h592bfe2c8bff45f3 + 226
    frame #33204: 0x0000000103c153af librustc_driver-554a90bb8f5bbcd2.dylib`rustc_trait_selection::traits::select::candidate_assembly::_$LT$impl$u20$rustc_trait_selection..traits..select..SelectionContext$GT$::candidate_from_obligation::h686543c10b9dec42 + 703
    frame #33205: 0x0000000103c1c739 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_trait_selection::traits::select::SelectionContext::select::h2789c69fa71858c9 + 217
    frame #33206: 0x0000000103bd545c librustc_driver-554a90bb8f5bbcd2.dylib`rustc_infer::infer::InferCtxt::commit_if_ok::h3154fdc6ea3296b2 + 76
    frame #33207: 0x0000000103b66d6c librustc_driver-554a90bb8f5bbcd2.dylib`rustc_trait_selection::traits::project::opt_normalize_projection_type::hc1aed362be4c51e1 + 4924
    frame #33208: 0x0000000103b656e0 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_trait_selection::traits::project::normalize_projection_type::hd350697a271dce3b + 240
    frame #33209: 0x0000000103b64f0a librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_trait_selection..traits..project..AssocTypeNormalizer$u20$as$u20$rustc_middle..ty..fold..TypeFolder$GT$::fold_ty::h6f37b9bd049fc9fe + 650
    frame #33210: 0x0000000102ad5e72 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::structural_impls::fold_list::ha32fa601e6386ba5 + 114
    frame #33211: 0x0000000102a4b5f6 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_trait_selection::traits::project::AssocTypeNormalizer::fold::hd40c4e87885eac09 + 246
    frame #33212: 0x00000001029c885b librustc_driver-554a90bb8f5bbcd2.dylib`rustc_data_structures::stack::ensure_sufficient_stack::hdb233cea4b0ba7f0 + 59
    frame #33213: 0x000000010299612c librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$rustc_infer..infer..InferCtxt$u20$as$u20$rustc_trait_selection..infer..InferCtxtExt$GT$::partially_normalize_associated_types_in::h84117d372d543f85 + 252
    frame #33214: 0x0000000102a674bb librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::context::GlobalCtxt::enter_local::h9b0d077aaeab1fa9 + 1979
    frame #33215: 0x0000000102af65db librustc_driver-554a90bb8f5bbcd2.dylib`rustc_typeck::check::wfcheck::check_item_well_formed::h7c111456b40e32e4 + 763
    frame #33216: 0x0000000102adc0ed librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::query::_$LT$impl$u20$rustc_query_system..query..config..QueryAccessors$LT$rustc_middle..ty..context..TyCtxt$GT$$u20$for$u20$rustc_middle..ty..query..queries..check_item_well_formed$GT$::compute::hb5a0eca8fe4b37ab + 93
    frame #33217: 0x000000010298f03e librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::dep_graph::_$LT$impl$u20$rustc_query_system..dep_graph..DepKind$u20$for$u20$rustc_middle..dep_graph..dep_node..DepKind$GT$::with_deps::hffec4be8151ec41c + 174
    frame #33218: 0x0000000102a86e74 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::dep_graph::graph::DepGraph$LT$K$GT$::with_task_impl::he3c6324a5b558f20 + 292
    frame #33219: 0x00000001029cad15 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_data_structures::stack::ensure_sufficient_stack::hf4b4e9087c6f706c + 709
    frame #33220: 0x0000000102a36865 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::query::plumbing::get_query_impl::hd8a12796b0afba81 + 3397
    frame #33221: 0x0000000102a42e78 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::query::plumbing::ensure_query_impl::hdf8bac0cc5f4df4c + 152
    frame #33222: 0x0000000102acf770 librustc_driver-554a90bb8f5bbcd2.dylib`_$LT$std..panic..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::hb1cb5ea46c8c4eac + 672
    frame #33223: 0x0000000102af5fee librustc_driver-554a90bb8f5bbcd2.dylib`rustc_hir::hir::Crate::par_visit_all_item_likes::hcb8e9037c7ac8d77 + 46
    frame #33224: 0x0000000102ac8832 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_typeck::check_crate::ha099f24a0111d0ff + 2114
    frame #33225: 0x000000010061cbbb librustc_driver-554a90bb8f5bbcd2.dylib`rustc_interface::passes::analysis::hbda38b9b64963f46 + 107
    frame #33226: 0x00000001004aae92 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::query::_$LT$impl$u20$rustc_query_system..query..config..QueryAccessors$LT$rustc_middle..ty..context..TyCtxt$GT$$u20$for$u20$rustc_middle..ty..query..queries..analysis$GT$::compute::h56ce88838dc55d25 + 98
    frame #33227: 0x000000010048cb04 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::dep_graph::_$LT$impl$u20$rustc_query_system..dep_graph..DepKind$u20$for$u20$rustc_middle..dep_graph..dep_node..DepKind$GT$::with_deps::h70717c887971b34b + 180
    frame #33228: 0x00000001005197a4 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::dep_graph::graph::DepGraph$LT$K$GT$::with_task_impl::h7356e90be014ecb8 + 292
    frame #33229: 0x0000000100514b9d librustc_driver-554a90bb8f5bbcd2.dylib`rustc_query_system::query::plumbing::get_query_impl::h86c1cafc480a95bc + 3981
    frame #33230: 0x00000001004ab685 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_middle::ty::context::tls::enter_global::h56481aaa85c872ae + 229
    frame #33231: 0x00000001004afe70 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_interface::queries::_$LT$impl$u20$rustc_interface..interface..Compiler$GT$::enter::hc21c8e95b073cabb + 1968
    frame #33232: 0x0000000100511121 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_span::with_source_map::hfe39b4a89c27343d + 353
    frame #33233: 0x00000001004b1b27 librustc_driver-554a90bb8f5bbcd2.dylib`rustc_interface::interface::run_compiler_in_existing_thread_pool::h8c3858433038e730 + 919
    frame #33234: 0x00000001004a8b89 librustc_driver-554a90bb8f5bbcd2.dylib`scoped_tls::ScopedKey$LT$T$GT$::set::ha6a4e0581178e78c + 393
    frame #33235: 0x00000001004b2e1d librustc_driver-554a90bb8f5bbcd2.dylib`std::sys_common::backtrace::__rust_begin_short_backtrace::hab16a3a82f3d18b4 + 397
    frame #33236: 0x00000001004939cc librustc_driver-554a90bb8f5bbcd2.dylib`core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h802c2aec831bb138 + 76
    frame #33237: 0x00000001073bbb2d libstd-c02d19cc7543a27a.dylib`std::sys::unix::thread::Thread::new::thread_start::h738da1179b799992 + 45
    frame #33238: 0x00007fff71a74109 libsystem_pthread.dylib`_pthread_start + 148
    frame #33239: 0x00007fff71a6fb8b libsystem_pthread.dylib`thread_start + 15

Metadata

Metadata

Assignees

No one assigned

    Labels

    A-const-genericsArea: const generics (parameters and arguments)C-bugCategory: This is a bug.F-const_generics`#![feature(const_generics)]`I-crashIssue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.requires-nightlyThis issue requires a nightly compiler in some way.

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions