ICE: broken mir: wrapping_mul() with copy bound

[matthiaskrgr]

Code

#![feature(core_intrinsics)]

pub fn wrapping<T: Copy>(a: T, b: T) {
    let _z = core::intrinsics::wrapping_mul(a, b);
}

pub fn main() {
    wrapping(1,2);
}

Meta

rustc --version --verbose:

rustc 1.65.0-nightly (750bd1a7f 2022-09-14)
binary: rustc
commit-hash: 750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c
commit-date: 2022-09-14
host: x86_64-unknown-linux-gnu
release: 1.65.0-nightly
LLVM version: 15.0.0

Error output

<output>

Backtrace

error: internal compiler error: no errors encountered even though `delay_span_bug` issued

error: internal compiler error: broken MIR in Item(WithOptConstParam { did: DefId(0:3 ~ 8a8880dad02e5032aab3b7bbad2422ee44f48c65[266c]::wrapping), const_param_did: None }) (after pass PhaseChange-Runtime(Optimized)) at bb0[2]:
                                Cannot perform arithmetic on type T
 --> 8a8880dad02e5032aab3b7bbad2422ee44f48c65.rs:4:14
  |
4 |     let _z = core::intrinsics::wrapping_mul(a, b);
  |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: delayed at compiler/rustc_const_eval/src/transform/validate.rs:129:36

thread 'rustc' panicked at 'Box<dyn Any>', compiler/rustc_errors/src/lib.rs:1492:13
stack backtrace:
   0:     0x7f8e3dea3c20 - std::backtrace_rs::backtrace::libunwind::trace::hf9cd4c385c25a2fe
                               at /rustc/750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   1:     0x7f8e3dea3c20 - std::backtrace_rs::backtrace::trace_unsynchronized::hf9a1be2df46de98c
                               at /rustc/750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f8e3dea3c20 - std::sys_common::backtrace::_print_fmt::ha770a6c3890b3cde
                               at /rustc/750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c/library/std/src/sys_common/backtrace.rs:66:5
   3:     0x7f8e3dea3c20 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h7099a61d18d47f5f
                               at /rustc/750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c/library/std/src/sys_common/backtrace.rs:45:22
   4:     0x7f8e3defeaee - core::fmt::write::h34c269a5556240be
                               at /rustc/750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c/library/core/src/fmt/mod.rs:1202:17
   5:     0x7f8e3de94835 - std::io::Write::write_fmt::h9b1d898decaac979
                               at /rustc/750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c/library/std/src/io/mod.rs:1679:15
   6:     0x7f8e3dea68d3 - std::sys_common::backtrace::_print::hb8325cbd910e0a42
                               at /rustc/750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c/library/std/src/sys_common/backtrace.rs:48:5
   7:     0x7f8e3dea68d3 - std::sys_common::backtrace::print::h52eaf8f4259fb854
                               at /rustc/750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c/library/std/src/sys_common/backtrace.rs:35:9
   8:     0x7f8e3dea68d3 - std::panicking::default_hook::{{closure}}::h38a1bd1ceb333281
                               at /rustc/750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c/library/std/src/panicking.rs:295:22
   9:     0x7f8e3dea65bf - std::panicking::default_hook::hbfa37b6c2aa83708
                               at /rustc/750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c/library/std/src/panicking.rs:314:9
  10:     0x7f8e4070d001 - <rustc_driver[f7b5b01335fbd434]::DEFAULT_HOOK::{closure#0}::{closure#0} as core[f6f8d9be6066ab2c]::ops::function::FnOnce<(&core[f6f8d9be6066ab2c]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
  11:     0x7f8e3dea710d - std::panicking::rust_panic_with_hook::h6bfc21eea1a19790
                               at /rustc/750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c/library/std/src/panicking.rs:702:17
  12:     0x7f8e41867141 - std[81ab5d9a96a0142e]::panicking::begin_panic::<rustc_errors[e78c9e9af74db21c]::ExplicitBug>::{closure#0}
  13:     0x7f8e41866c66 - std[81ab5d9a96a0142e]::sys_common::backtrace::__rust_end_short_backtrace::<std[81ab5d9a96a0142e]::panicking::begin_panic<rustc_errors[e78c9e9af74db21c]::ExplicitBug>::{closure#0}, !>
  14:     0x7f8e418668f6 - std[81ab5d9a96a0142e]::panicking::begin_panic::<rustc_errors[e78c9e9af74db21c]::ExplicitBug>
  15:     0x7f8e41864446 - std[81ab5d9a96a0142e]::panic::panic_any::<rustc_errors[e78c9e9af74db21c]::ExplicitBug>
  16:     0x7f8e4025e228 - <rustc_errors[e78c9e9af74db21c]::HandlerInner as core[f6f8d9be6066ab2c]::ops::drop::Drop>::drop
  17:     0x7f8e3f540b28 - core[f6f8d9be6066ab2c]::ptr::drop_in_place::<rustc_session[c3e5419825648902]::parse::ParseSess>
  18:     0x7f8e3f4fe4e8 - <alloc[9d62437589f31483]::rc::Rc<rustc_session[c3e5419825648902]::session::Session> as core[f6f8d9be6066ab2c]::ops::drop::Drop>::drop
  19:     0x7f8e3f4fb4ad - core[f6f8d9be6066ab2c]::ptr::drop_in_place::<rustc_interface[5bcac5cfb78c3b1a]::interface::Compiler>
  20:     0x7f8e3f4f8d0c - rustc_interface[5bcac5cfb78c3b1a]::interface::create_compiler_and_run::<core[f6f8d9be6066ab2c]::result::Result<(), rustc_errors[e78c9e9af74db21c]::ErrorGuaranteed>, rustc_driver[f7b5b01335fbd434]::run_compiler::{closure#1}>
  21:     0x7f8e3f4f7211 - <scoped_tls[de48490ce358b7ec]::ScopedKey<rustc_span[352514dd70ceaa1d]::SessionGlobals>>::set::<rustc_interface[5bcac5cfb78c3b1a]::interface::run_compiler<core[f6f8d9be6066ab2c]::result::Result<(), rustc_errors[e78c9e9af74db21c]::ErrorGuaranteed>, rustc_driver[f7b5b01335fbd434]::run_compiler::{closure#1}>::{closure#0}, core[f6f8d9be6066ab2c]::result::Result<(), rustc_errors[e78c9e9af74db21c]::ErrorGuaranteed>>
  22:     0x7f8e3f4f6eff - std[81ab5d9a96a0142e]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[5bcac5cfb78c3b1a]::util::run_in_thread_pool_with_globals<rustc_interface[5bcac5cfb78c3b1a]::interface::run_compiler<core[f6f8d9be6066ab2c]::result::Result<(), rustc_errors[e78c9e9af74db21c]::ErrorGuaranteed>, rustc_driver[f7b5b01335fbd434]::run_compiler::{closure#1}>::{closure#0}, core[f6f8d9be6066ab2c]::result::Result<(), rustc_errors[e78c9e9af74db21c]::ErrorGuaranteed>>::{closure#0}, core[f6f8d9be6066ab2c]::result::Result<(), rustc_errors[e78c9e9af74db21c]::ErrorGuaranteed>>
  23:     0x7f8e40571000 - <<std[81ab5d9a96a0142e]::thread::Builder>::spawn_unchecked_<rustc_interface[5bcac5cfb78c3b1a]::util::run_in_thread_pool_with_globals<rustc_interface[5bcac5cfb78c3b1a]::interface::run_compiler<core[f6f8d9be6066ab2c]::result::Result<(), rustc_errors[e78c9e9af74db21c]::ErrorGuaranteed>, rustc_driver[f7b5b01335fbd434]::run_compiler::{closure#1}>::{closure#0}, core[f6f8d9be6066ab2c]::result::Result<(), rustc_errors[e78c9e9af74db21c]::ErrorGuaranteed>>::{closure#0}, core[f6f8d9be6066ab2c]::result::Result<(), rustc_errors[e78c9e9af74db21c]::ErrorGuaranteed>>::{closure#1} as core[f6f8d9be6066ab2c]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  24:     0x7f8e3deb0ee3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2695b43ebae659e4
                               at /rustc/750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c/library/alloc/src/boxed.rs:1940:9
  25:     0x7f8e3deb0ee3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf3b49b955267341c
                               at /rustc/750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c/library/alloc/src/boxed.rs:1940:9
  26:     0x7f8e3deb0ee3 - std::sys::unix::thread::Thread::new::thread_start::h2bad5ab8a769c6c8
                               at /rustc/750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c/library/std/src/sys/unix/thread.rs:108:17
  27:     0x7f8e3dc0978d - <unknown>
  28:     0x7f8e3dc8a8e4 - clone
  29:                0x0 - <unknown>

note: 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 1.65.0-nightly (750bd1a7f 2022-09-14) running on x86_64-unknown-linux-gnu

query stack during panic:
end of query stack

[compiler-errors]

I think it's understood that using these intrinsics incorrectly will ICE, since we have no way of checking this intrinsic's usage properly via a trait bound...

[Noratrieb]

closing as "don't do this", this is an intrinsic which is not supported