ice: asm: unreachable

[matthiaskrgr]

Code

use std::arch::asm;

fn main() {
    unsafe {
        asm!("", clobber_abi(5));
    }
}

Meta

rustc --version --verbose:

rustc 1.72.0-nightly (7b0eac438 2023-06-14)
binary: rustc
commit-hash: 7b0eac438ace0ba305b4633328b00474fbbf5120
commit-date: 2023-06-14
host: x86_64-unknown-linux-gnu
release: 1.72.0-nightly
LLVM version: 16.0.5

Error output

-

Backtrace

thread 'rustc' panicked at 'internal error: entered unreachable code', compiler/rustc_builtin_macros/src/asm.rs:411:15
stack backtrace:
   0:     0x7f5376968c41 - std::backtrace_rs::backtrace::libunwind::trace::hd5b7972f789c4974
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f5376968c41 - std::backtrace_rs::backtrace::trace_unsynchronized::h938f2c39be6402c9
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f5376968c41 - std::sys_common::backtrace::_print_fmt::hf19df4df321a9f93
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f5376968c41 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hd26317478e51975e
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f53769c95ff - core::fmt::rt::Argument::fmt::h16c7790b1e3f1543
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/core/src/fmt/rt.rs:138:9
   5:     0x7f53769c95ff - core::fmt::write::h6ebd457ad24c415a
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/core/src/fmt/mod.rs:1094:21
   6:     0x7f537695be41 - std::io::Write::write_fmt::h0c198b050bd0b55a
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/std/src/io/mod.rs:1713:15
   7:     0x7f5376968a55 - std::sys_common::backtrace::_print::h369a7cf325feecb2
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f5376968a55 - std::sys_common::backtrace::print::h8375e9dd85dcd975
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f537696b737 - std::panicking::default_hook::{{closure}}::h0cff43e655091646
  10:     0x7f537696b524 - std::panicking::default_hook::h28fa1651a8383aac
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/std/src/panicking.rs:288:9
  11:     0x7f5379bcd25b - <rustc_driver_impl[d1aa6109471fdd45]::install_ice_hook::{closure#0} as core[9d3b7bf065738f73]::ops::function::FnOnce<(&core[9d3b7bf065738f73]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
  12:     0x7f537696be7d - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h5e01b737276d5f55
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/alloc/src/boxed.rs:1999:9
  13:     0x7f537696be7d - std::panicking::rust_panic_with_hook::hb6b23c86320f793c
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/std/src/panicking.rs:709:13
  14:     0x7f537696bbd1 - std::panicking::begin_panic_handler::{{closure}}::ha3a4d56807981a5b
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/std/src/panicking.rs:595:13
  15:     0x7f5376969076 - std::sys_common::backtrace::__rust_end_short_backtrace::hedce57d3aff3f0d4
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/std/src/sys_common/backtrace.rs:151:18
  16:     0x7f537696b962 - rust_begin_unwind
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/std/src/panicking.rs:593:5
  17:     0x7f53769c5883 - core::panicking::panic_fmt::hc8c8dc133a503605
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/core/src/panicking.rs:67:14
  18:     0x7f53769c5913 - core::panicking::panic::hf0e1008480fe1028
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/core/src/panicking.rs:117:5
  19:     0x7f5379347c59 - rustc_builtin_macros[4236fe0ec7a688d6]::asm::parse_asm_args
  20:     0x7f5379345d96 - rustc_builtin_macros[4236fe0ec7a688d6]::asm::expand_asm
  21:     0x7f537860c888 - <rustc_expand[752c13cf57fc9566]::expand::MacroExpander>::fully_expand_fragment
  22:     0x7f5378b410d7 - <rustc_expand[752c13cf57fc9566]::expand::MacroExpander>::expand_crate
  23:     0x7f5378b40380 - <rustc_session[1ee1d215f1830d4a]::session::Session>::time::<rustc_ast[7b80322a36d12112]::ast::Crate, rustc_interface[acec405c1e433d19]::passes::configure_and_expand::{closure#1}>
  24:     0x7f5378af3698 - rustc_interface[acec405c1e433d19]::passes::resolver_for_lowering
  25:     0x7f53790e3e8a - rustc_query_impl[77c04cfc11717055]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[77c04cfc11717055]::query_impl::resolver_for_lowering::dynamic_query::{closure#2}::{closure#0}, rustc_middle[c2220a5f32aee4a9]::query::erase::Erased<[u8; 8usize]>>
  26:     0x7f53790e3e79 - <rustc_query_impl[77c04cfc11717055]::query_impl::resolver_for_lowering::dynamic_query::{closure#2} as core[9d3b7bf065738f73]::ops::function::FnOnce<(rustc_middle[c2220a5f32aee4a9]::ty::context::TyCtxt, ())>>::call_once
  27:     0x7f53790132fc - rustc_query_system[21afab51dde9dbf3]::query::plumbing::try_execute_query::<rustc_query_impl[77c04cfc11717055]::DynamicConfig<rustc_query_system[21afab51dde9dbf3]::query::caches::SingleCache<rustc_middle[c2220a5f32aee4a9]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[77c04cfc11717055]::plumbing::QueryCtxt, false>
  28:     0x7f537955a865 - rustc_query_impl[77c04cfc11717055]::query_impl::resolver_for_lowering::get_query_non_incr::__rust_end_short_backtrace
  29:     0x7f537924a3e3 - <rustc_middle[c2220a5f32aee4a9]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[d1aa6109471fdd45]::run_compiler::{closure#1}::{closure#2}::{closure#2}, &rustc_data_structures[b715d01ec5ecbd6f]::steal::Steal<(rustc_middle[c2220a5f32aee4a9]::ty::ResolverAstLowering, alloc[a7b65b885799e8e7]::rc::Rc<rustc_ast[7b80322a36d12112]::ast::Crate>)>>
  30:     0x7f5378e3b341 - <rustc_interface[acec405c1e433d19]::interface::Compiler>::enter::<rustc_driver_impl[d1aa6109471fdd45]::run_compiler::{closure#1}::{closure#2}, core[9d3b7bf065738f73]::result::Result<core[9d3b7bf065738f73]::option::Option<rustc_interface[acec405c1e433d19]::queries::Linker>, rustc_span[9591d6886b6f356b]::ErrorGuaranteed>>
  31:     0x7f5378e38fb9 - <scoped_tls[eb9c878293193d5c]::ScopedKey<rustc_span[9591d6886b6f356b]::SessionGlobals>>::set::<rustc_interface[acec405c1e433d19]::interface::run_compiler<core[9d3b7bf065738f73]::result::Result<(), rustc_span[9591d6886b6f356b]::ErrorGuaranteed>, rustc_driver_impl[d1aa6109471fdd45]::run_compiler::{closure#1}>::{closure#0}, core[9d3b7bf065738f73]::result::Result<(), rustc_span[9591d6886b6f356b]::ErrorGuaranteed>>
  32:     0x7f5378e38426 - std[c901bbae7dc26da3]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[acec405c1e433d19]::util::run_in_thread_pool_with_globals<rustc_interface[acec405c1e433d19]::interface::run_compiler<core[9d3b7bf065738f73]::result::Result<(), rustc_span[9591d6886b6f356b]::ErrorGuaranteed>, rustc_driver_impl[d1aa6109471fdd45]::run_compiler::{closure#1}>::{closure#0}, core[9d3b7bf065738f73]::result::Result<(), rustc_span[9591d6886b6f356b]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[9d3b7bf065738f73]::result::Result<(), rustc_span[9591d6886b6f356b]::ErrorGuaranteed>>
  33:     0x7f5378e381d5 - <<std[c901bbae7dc26da3]::thread::Builder>::spawn_unchecked_<rustc_interface[acec405c1e433d19]::util::run_in_thread_pool_with_globals<rustc_interface[acec405c1e433d19]::interface::run_compiler<core[9d3b7bf065738f73]::result::Result<(), rustc_span[9591d6886b6f356b]::ErrorGuaranteed>, rustc_driver_impl[d1aa6109471fdd45]::run_compiler::{closure#1}>::{closure#0}, core[9d3b7bf065738f73]::result::Result<(), rustc_span[9591d6886b6f356b]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[9d3b7bf065738f73]::result::Result<(), rustc_span[9591d6886b6f356b]::ErrorGuaranteed>>::{closure#1} as core[9d3b7bf065738f73]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  34:     0x7f53769763a5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf9fefea5dd71558b
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/alloc/src/boxed.rs:1985:9
  35:     0x7f53769763a5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h8c988cde4d28b483
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/alloc/src/boxed.rs:1985:9
  36:     0x7f53769763a5 - std::sys::unix::thread::Thread::new::thread_start::hac03aed06feb4b93
                               at /rustc/7b0eac438ace0ba305b4633328b00474fbbf5120/library/std/src/sys/unix/thread.rs:108:17
  37:     0x7f537670f44b - <unknown>
  38:     0x7f5376792e40 - <unknown>
  39:                0x0 - <unknown>

error: 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 1.72.0-nightly (7b0eac438 2023-06-14) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [resolver_for_lowering] getting the resolver for lowering
end of query stack

[Jules-Bertholet]

Regressed in 1.58: Godbolt

[asquared31415]

This was #89316, whoops. I can work on this.

@rustbot claim