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[ICE]: Calling TypeId::info while evaluating constant triggers ICE #162094

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Open
[ICE]: Calling TypeId::info while evaluating constant triggers ICE#162094
Labels
C-bugCategory: This is a bug.I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.

Description

@sutajo
sutajo
opened on Aug 31, 2026

Code

#![feature(type_info)]

use std::{any::TypeId, mem::type_info::Type};

struct Text {
    text: String,
    letter_count: usize,
}

const INFO: &[Type] = &[TypeId::of::<Text>().info()];

fn main() {
    println!("TypeInfo: {:?}", INFO);
}

Meta

rustc --version --verbose:

rustc 1.100.0-nightly (908501772 2026-08-30)
binary: rustc
commit-hash: 90850177249efe0321573c569aec5d12b257f8d6
commit-date: 2026-08-30
host: x86_64-pc-windows-msvc
release: 1.100.0-nightly
LLVM version: 23.1.0

Error output

                                                                                                                                                                                                                                                                        
thread 'rustc' (13536) panicked at /rustc-dev/90850177249efe0321573c569aec5d12b257f8d6/compiler\rustc_abi\src\lib.rs:1711:66:                                                                                                                                           
index out of bounds: the len is 0 but the index is 0

query stack during panic:
#0 [eval_to_allocation_raw] const-evaluating + checking `INFO::promoted[0]`
#1 [eval_to_const_value_raw] simplifying constant for the type system `INFO::promoted[0]`
#2 [eval_to_allocation_raw] const-evaluating + checking `INFO`
#3 [eval_to_const_value_raw] simplifying constant for the type system `INFO`
#4 [eval_to_const_value_raw] simplifying constant for the type system `INFO`
#5 [analysis] running analysis passes on crate `test_crate`
end of query stack
Backtrace 

stack backtrace:
   0:     0x7ff95d270dd9 - std::backtrace_rs::backtrace::win64::trace                                                                                                                                                                                                   
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\std\src\..\..\backtrace\src\backtrace\win64.rs:85
   1:     0x7ff95d270dd9 - std::backtrace_rs::backtrace::trace_unsynchronized
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\std\src\..\..\backtrace\src\backtrace\mod.rs:66
   2:     0x7ff95d270dd9 - std::sys::backtrace::_print_fmt
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\std\src\sys\backtrace.rs:74
   3:     0x7ff95d270dd9 - std::sys::backtrace::impl$0::print::impl$0::fmt
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\std\src\sys\backtrace.rs:44
   4:     0x7ff95d29a16e - core::fmt::write                                                                                                                                                                                                                             
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\core\src\fmt\mod.rs:0
   5:     0x7ff95d280b64 - core::io::write::default_write_fmt                                                                                                                                                                                                           
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\core\src\io\write.rs:402
   6:     0x7ff95d280b64 - core::io::write::Write::write_fmt<std::sys::stdio::windows::Stderr>
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\core\src\io\write.rs:335
   7:     0x7ff95d245c35 - std::sys::backtrace::BacktraceLock::print
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\std\src\sys\backtrace.rs:47
   8:     0x7ff95d245c35 - std::panicking::default_hook::closure$0
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\std\src\panicking.rs:289
   9:     0x7ff95d2623a8 - std::panicking::default_hook
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\std\src\panicking.rs:316
  10:     0x7ff95eede20b - core[5235f252c9935a3]::slice::sort::unstable::heapsort::heapsort::<((rustc_lint_defs[4a46e7435bead740]::Level, &str), usize), <((rustc_lint_defs[4a46e7435bead740]::Level, &str), usize) as core[5235f252c9935a3]::cmp::PartialOrd>::lt>     
  11:     0x7ff95d2627c4 - std::panicking::panic_with_hook
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\std\src\panicking.rs:819
  12:     0x7ff95d245d0e - std::panicking::panic_handler::closure$0
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\std\src\panicking.rs:685
  13:     0x7ff95d2432ef - std::sys::backtrace::__rust_end_short_backtrace<std::panicking::panic_handler::closure_env$0,never$>
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\std\src\sys\backtrace.rs:182
  14:     0x7ff95d2467fe - std::panicking::panic_handler
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\std\src\panicking.rs:676
  15:     0x7ff96133a4ad - core::panicking::panic_fmt                                                                                                                                                                                                                   
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\core\src\panicking.rs:80
  16:     0x7ff96133a1fc - core::panicking::panic_bounds_check
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\core\src\panicking.rs:271
  17:     0x7ff95e2bb905 - <hashbrown[7938b6bd6fff78d1]::raw::RawTable<usize>>::reserve_rehash::<indexmap[948a5fb2dee0c14f]::inner::get_hash<rustc_middle[ff8df0a6513f9a65]::mir::interpret::AllocId, (rustc_abi[54d08730cf6afc6a]::Size, rustc_abi[54d08730cf6afc6a]::Align)>::{closure#0}>
  18:     0x7ff96077df3c - <rustc_data_structures[7ddd9000ff95f22b]::vec_cache::SlotIndex>::initialize_bucket::<rustc_middle[ff8df0a6513f9a65]::query::erase::ErasedData<[u8; 24usize]>>                                                                                
  19:     0x7ff95ce24882 - <rustc_const_eval[e7b92f60fabb5087]::const_eval::machine::CompileTimeMachine as rustc_const_eval[e7b92f60fabb5087]::interpret::machine::Machine>::call_intrinsic                                                                             
  20:     0x7ff95e4a9e26 - <alloc[929e38df1a203045]::raw_vec::RawVec<rustc_const_eval[e7b92f60fabb5087]::interpret::stack::Frame>>::grow_one                                                                                                                            
  21:     0x7ff95e2eff54 - <hashbrown[7938b6bd6fff78d1]::raw::RawTable<usize>>::reserve_rehash::<indexmap[948a5fb2dee0c14f]::inner::get_hash<rustc_middle[ff8df0a6513f9a65]::mir::interpret::AllocId, (rustc_abi[54d08730cf6afc6a]::Size, rustc_abi[54d08730cf6afc6a]::Align)>::{closure#0}>
  22:     0x7ff95e4f1df0 - rustc_const_eval[e7b92f60fabb5087]::const_eval::eval_queries::eval_to_allocation_raw_provider                                                                                                                                                
  23:     0x7ff95df19167 - rustc_query_impl[71fda13b9ff8bde5]::query_system                                                                                                                                                                                             
  24:     0x7ff95cb8939d - <rustc_privacy[f4208252cb3844d4]::DefIdsToImplsCollector as rustc_privacy[f4208252cb3844d4]::DefIdVisitor>::visit_def_id                                                                                                                     
  25:     0x7ff95cc75fa4 - rustc_query_impl[71fda13b9ff8bde5]::self_profile::alloc_self_profile_query_strings                                                                                                                                                           
  26:     0x7ff95e4f2b78 - rustc_const_eval[e7b92f60fabb5087]::const_eval::eval_queries::eval_to_const_value_raw_provider                                                                                                                                               
  27:     0x7ff95df1a0a3 - rustc_query_impl[71fda13b9ff8bde5]::query_system                                                                                                                                                                                             
  28:     0x7ff95cb8939d - <rustc_privacy[f4208252cb3844d4]::DefIdsToImplsCollector as rustc_privacy[f4208252cb3844d4]::DefIdVisitor>::visit_def_id                                                                                                                     
  29:     0x7ff95cc77d69 - rustc_query_impl[71fda13b9ff8bde5]::self_profile::alloc_self_profile_query_strings                                                                                                                                                           
  30:     0x7ff95ecbb8ed - <rustc_middle[ff8df0a6513f9a65]::ty::context::TyCtxt>::const_eval_resolve                                                                                                                                                                    
  31:     0x7ff95e49157e - <alloc[929e38df1a203045]::raw_vec::RawVec<rustc_const_eval[e7b92f60fabb5087]::interpret::stack::Frame>>::grow_one                                                                                                                            
  32:     0x7ff95e2ecfbc - <hashbrown[7938b6bd6fff78d1]::raw::RawTable<usize>>::reserve_rehash::<indexmap[948a5fb2dee0c14f]::inner::get_hash<rustc_middle[ff8df0a6513f9a65]::mir::interpret::AllocId, (rustc_abi[54d08730cf6afc6a]::Size, rustc_abi[54d08730cf6afc6a]::Align)>::{closure#0}>
  33:     0x7ff95e4f1df0 - rustc_const_eval[e7b92f60fabb5087]::const_eval::eval_queries::eval_to_allocation_raw_provider                                                                                                                                                
  34:     0x7ff95df19167 - rustc_query_impl[71fda13b9ff8bde5]::query_system                                                                                                                                                                                             
  35:     0x7ff95cb8939d - <rustc_privacy[f4208252cb3844d4]::DefIdsToImplsCollector as rustc_privacy[f4208252cb3844d4]::DefIdVisitor>::visit_def_id                                                                                                                     
  36:     0x7ff95cc75fa4 - rustc_query_impl[71fda13b9ff8bde5]::self_profile::alloc_self_profile_query_strings                                                                                                                                                           
  37:     0x7ff95e4f2b78 - rustc_const_eval[e7b92f60fabb5087]::const_eval::eval_queries::eval_to_const_value_raw_provider                                                                                                                                               
  38:     0x7ff95df1a0a3 - rustc_query_impl[71fda13b9ff8bde5]::query_system                                                                                                                                                                                             
  39:     0x7ff95cb8939d - <rustc_privacy[f4208252cb3844d4]::DefIdsToImplsCollector as rustc_privacy[f4208252cb3844d4]::DefIdVisitor>::visit_def_id                                                                                                                     
  40:     0x7ff95cc77d69 - rustc_query_impl[71fda13b9ff8bde5]::self_profile::alloc_self_profile_query_strings                                                                                                                                                           
  41:     0x7ff95e4f47e9 - rustc_const_eval[e7b92f60fabb5087]::const_eval::eval_queries::eval_to_const_value_raw_provider                                                                                                                                               
  42:     0x7ff95df1a0a3 - rustc_query_impl[71fda13b9ff8bde5]::query_system                                                                                                                                                                                             
  43:     0x7ff95cb8939d - <rustc_privacy[f4208252cb3844d4]::DefIdsToImplsCollector as rustc_privacy[f4208252cb3844d4]::DefIdVisitor>::visit_def_id                                                                                                                     
  44:     0x7ff95cc77d69 - rustc_query_impl[71fda13b9ff8bde5]::self_profile::alloc_self_profile_query_strings                                                                                                                                                           
  45:     0x7ff95d7186b2 - rustc_hir_analysis[392b44a2768d5cb4]::check_crate                                                                                                                                                                                            
  46:     0x7ff95d2ca354 - rustc_interface[f6b4f5efc692e8a6]::passes::analysis                                                                                                                                                                                          
  47:     0x7ff95cc8105a - rustc_query_impl[71fda13b9ff8bde5]::self_profile::alloc_self_profile_query_strings                                                                                                                                                           
  48:     0x7ff95cb706ec - <rustc_privacy[f4208252cb3844d4]::DefIdsToImplsCollector as rustc_privacy[f4208252cb3844d4]::DefIdVisitor>::visit_def_id                                                                                                                     
  49:     0x7ff95cc8100f - rustc_query_impl[71fda13b9ff8bde5]::self_profile::alloc_self_profile_query_strings                                                                                                                                                           
  50:     0x7ff95999f59a - std[9e5749963883991b]::sys::backtrace::__rust_begin_short_backtrace::<std[9e5749963883991b]::thread::lifecycle::spawn_unchecked<ctrlc[44188e9b13fd95d6]::set_handler_inner<rustc_driver_impl[677f3ef92316efab]::install_ctrlc_handler::{closure#0}>::{closure#0}, !>::{closure#1}::{closure#0}::{closure#0}, ()>
  51:     0x7ff959996f25 - RINvNtNtCsdAQp8FNMVdv_3std3sys9backtrace28___rust_begin_short_backtraceNCNCINvNtCslbdk9GNdmrq_15rustc_interface4util26run_in_thread_with_globalsNCINvB1e_31run_in_thread_pool_with_globalsNCINvNtB1g_9interface12run_compileruNCNvCs8SUzeSaXoy5_17rustc_driver_i
  52:     0x7ff9599a4457 - std[9e5749963883991b]::sys::backtrace::__rust_begin_short_backtrace::<std[9e5749963883991b]::thread::lifecycle::spawn_unchecked<ctrlc[44188e9b13fd95d6]::set_handler_inner<rustc_driver_impl[677f3ef92316efab]::install_ctrlc_handler::{closure#0}>::{closure#0}, !>::{closure#1}::{closure#0}::{closure#0}, ()>
  53:     0x7ff95d26d4e3 - std::sys::thread::windows::impl$0::new::thread_start                                                                                                                                                                                         
                               at /rustc/90850177249efe0321573c569aec5d12b257f8d6/library\std\src\sys\thread\windows.rs:58
  54:     0x7ffa59d3ccb7 - BaseThreadInitThunk                                                                                                                                                                                                                          
  55:     0x7ffa5af0ad6c - RtlUserThreadStart

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    C-bugCategory: This is a bug.I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.

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