ICE getting discriminant of #[repr(i128)] enum #43398
Description
ICE occurs whether we use intrinsics::discriminant_value or mem::discriminant. cc #35118 #24263
STR
#![feature(core_intrinsics)] #![feature(i128_type)] #[repr(i128)] enum Big { A, B } fn main() { unsafe { println!("{} {:?}", std::intrinsics::discriminant_value(&Big::A), std::mem::discriminant(&Big::B)); } }ICE
thread 'rustc' panicked at 'assertion failed: bits <= 64', src/librustc_trans/adt.rs:368:4 note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace. stack backtrace: 0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace 1: std::panicking::default_hook::{{closure}} 2: std::panicking::default_hook 3: std::panicking::rust_panic_with_hook 4: std::panicking::begin_panic_new 5: rustc_trans::adt::load_discr 6: rustc_trans::adt::trans_get_discr 7: rustc_trans::intrinsic::trans_intrinsic_call 8: rustc_trans::mir::block::<impl rustc_trans::mir::MirContext<'a, 'tcx>>::trans_terminator 9: rustc_trans::mir::trans_mir 10: rustc_trans::trans_item::TransItem::define 11: rustc_trans::base::trans_crate::module_translation 12: rustc_trans::base::trans_crate 13: rustc_driver::driver::phase_4_translate_to_llvm 14: rustc_driver::driver::compile_input::{{closure}} 15: rustc_driver::driver::phase_3_run_analysis_passes::{{closure}} 16: rustc_driver::driver::phase_3_run_analysis_passes 17: rustc_driver::driver::compile_input 18: rustc_driver::run_compiler