Using enum with trait causes crash

[samueltardieu]

The following code

trait U {}

enum T {
  Data(U)
}

fn f(t: &T) {}

fn main() {}

causes a crash:

error: internal compiler error: unexpected panic
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports
thread 'rustc' panicked at 'Unexpected type returned from struct_tail: T for ty=T', ../src/librustc_trans/trans/type_of.rs:385
stack backtrace:
   1:     0x7f301ebbb2e0 - sys::backtrace::tracing::imp::write::h0d0a08d80e4d7818c6s
   2:     0x7f301ebc1bb5 - panicking::log_panic::_<closure>::closure.39237
   3:     0x7f301ebc1625 - panicking::log_panic::hc600c9d523508112r5w
   4:     0x7f301eb863d3 - sys_common::unwind::begin_unwind_inner::h11c2d7c7e9df27a1lZr
   5:     0x7f301eb86d38 - sys_common::unwind::begin_unwind_fmt::he0880dabecde94derYr
   6:     0x7f301e0aeb22 - trans::type_of::in_memory_type_of::h6d2f26d7ba580fbfDvN
   7:     0x7f301e0c1257 - trans::type_of::arg_type_of::h1b006958bb3a6c2a1tN
   8:     0x7f301e188bce - trans::type_of::type_of_rust_fn::h897c98922d866effVfN
   9:     0x7f301e0bb6be - trans::declare::declare_rust_fn::hbfcb86bdb2ca6dfe4oA
  10:     0x7f301e0e8825 - trans::base::register_fn::he5bb772f9d301465sZi
  11:     0x7f301e0ea471 - trans::base::register_method::hb2714a130f54c5c3Apj
  12:     0x7f301e0e2c7e - trans::base::get_item_val::h5682d3a912fe3768Tbj
  13:     0x7f301e0dfe05 - trans::base::trans_item::h1c07c6c08bf0df89mQi
  14:     0x7f301e0ed0a4 - trans::base::trans_crate::hca191217405132f4dCj
  15:     0x7f301f095d69 - driver::phase_4_translate_to_llvm::h299d4421665e611anPa
  16:     0x7f301f08fe76 - driver::phase_3_run_analysis_passes::_<closure>::closure.21872
  17:     0x7f301f07199c - middle::ty::context::_<impl>::create_and_enter::create_and_enter::h11954932776970334805
  18:     0x7f301f06d3dd - driver::phase_3_run_analysis_passes::h16794493593789304808
  19:     0x7f301f04bd67 - driver::compile_input::hb2545e07b739fd897ba
  20:     0x7f301f1a0f1b - run_compiler::h08f9725ff9bbf279Rpc
  21:     0x7f301f19e7a6 - boxed::_<impl>::call_box::call_box::h13709305409828408832
  22:     0x7f301f19e0b4 - sys_common::unwind::try::try_fn::try_fn::h15520752725335829705
  23:     0x7f301ebb9008 - __rust_try
  24:     0x7f301ebad78b - sys_common::unwind::try::inner_try::he824237455481e24TVr
  25:     0x7f301f19e24e - boxed::_<impl>::call_box::call_box::h3683904835642109356
  26:     0x7f301ebc0683 - sys::thread::_<impl>::new::thread_start::h21bf5aa61a8628b1Gnw
  27:     0x7f30182854a3 - start_thread
  28:     0x7f301e84e13c - clone
  29:                0x0 - <unknown>

Meta

% rustc --version --verbose
rustc 1.5.0-nightly (81b3b27cf 2015-10-11)
binary: rustc
commit-hash: 81b3b27cf533e50424f749d1c1db23e5d8db952f
commit-date: 2015-10-11
host: x86_64-unknown-linux-gnu
release: 1.5.0-nightly

[apasel422]

This appears to be a duplicate of #16812.

[apasel422]

This can be closed.