ICE Struct += Struct

[japaric]

STR

struct Struct;

fn main() {
    Struct += Struct;
}

Output

ice.rs:4:5: 4:21 error: binary assignment operation `+=` cannot be applied to type `Struct`
ice.rs:4     Struct += Struct;
             ^~~~~~~~~~~~~~~~
error: internal compiler error: node_id_to_type: no type for node `expr Struct (id=13)`
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: http://doc.rust-lang.org/complement-bugreport.html
note: run with `RUST_BACKTRACE=1` for a backtrace
task 'rustc' panicked at 'Box<Any>', /var/tmp/paludis/build/dev-lang-rust-scm/work/rust-scm/src/libsyntax/diagnostic.rs:180

stack backtrace:
   1:     0x7f7c8a53c210 - rt::backtrace::imp::write::h42dbac067ddfb84aK9x
   2:     0x7f7c8a53f2e0 - <unknown>
   3:     0x7f7c8a19c500 - unwind::begin_unwind_inner::h097035e7a55425d6YQc
   4:     0x7f7c880a3150 - <unknown>
   5:     0x7f7c880a3880 - diagnostic::Handler::bug::h66c514572f1833beW9F
   6:     0x7f7c88ef4410 - middle::ty::node_id_to_type::he348e5f01af17731ux6
   7:     0x7f7c890a6700 - middle::ty::expr_kind::hf3b8f186852d9e6bN26
   8:     0x7f7c891e4670 - <unknown>
   9:     0x7f7c8921b0b0 - middle::typeck::check::check_stmt::h95b51f23e662710fTUq
  10:     0x7f7c8919cde0 - <unknown>
  11:     0x7f7c89174cd0 - <unknown>
  12:     0x7f7c89199760 - <unknown>
  13:     0x7f7c891955d0 - middle::typeck::check::check_item::ha5af42104de2c03d8yl
  14:     0x7f7c891993f0 - middle::typeck::check::check_item_types::hc79bceba3c09db148dl
  15:     0x7f7c8953ccc0 - <unknown>
  16:     0x7f7c8953bed0 - middle::typeck::check_crate::ha9e443d271ae4b87PVO
  17:     0x7f7c8ab5dd00 - driver::driver::phase_3_run_analysis_passes::h3348c824d854c9b8VlS
  18:     0x7f7c8ab52d80 - driver::driver::compile_input::h96cfcd1fc8f6fbdd12R
  19:     0x7f7c8abd6cb0 - <unknown>
  20:     0x7f7c8abd6ba0 - <unknown>
  21:     0x7f7c8a9ded20 - <unknown>
  22:     0x7f7c8a50ce70 - <unknown>
  23:     0x7f7c8a19a2e0 - <unknown>
  24:     0x7f7c8a1eaf50 - <unknown>
  25:     0x7f7c8a1eaf40 - rust_try
  26:     0x7f7c8a19a3c0 - unwind::try::h76b36eb90468baffjFc
  27:     0x7f7c8a19a180 - task::Task::run::haf51cb923e41a2c8cOb
  28:     0x7f7c8a199d70 - <unknown>
  29:     0x7f7c8a19b7c0 - <unknown>
  30:     0x7f7c851081a0 - start_thread
  31:     0x7f7c89e72379 - clone
  32:                0x0 - <unknown>

Version

rustc 0.13.0-dev (8fb027e39 2014-11-26 12:02:16 +0000)

Maybe related to #9307 (see #9307 (comment)), but AFAIK += is not a lang item.

[arielb1]

This isn't related to #9307.

This is an issue with = too.

Good backtrace:

stack backtrace:
   1:     0x7f1548a63ed0 - rt::backtrace::imp::write::h1c9c1ea877e5edc5K9x
   2:     0x7f1548a65f40 - failure::on_fail::h284073a486443c413By
   3:     0x7f15486c7c30 - unwind::begin_unwind_inner::hb0b35e2abeecf1a6YQc
   4:     0x7f15467e4d90 - unwind::begin_unwind::h10120921747425399695
   5:     0x7f15467e5340 - diagnostic::Handler::bug::he23fca87e418c598W9F
   6:     0x7f15475a1ee0 - session::Session::bug::h0bef21eaae734aa1BV3
   7:     0x7f15475d1f30 - middle::ty::node_id_to_type::ha1dec8b17686be2aux6
   8:     0x7f1547767690 - middle::ty::expr_kind::h2dfd650c41f03ea7N26
   9:     0x7f154787b870 - middle::typeck::check::check_expr_with_unifier::h8851395bac412942sZo
  10:     0x7f15478a9410 - middle::typeck::check::check_stmt::h09bff7b86c2f7383TUq
  11:     0x7f154783d3d0 - middle::typeck::check::check_block_with_expected::hdf2f1eaf1eed2e398Yq
  12:     0x7f154781a740 - middle::typeck::check::check_fn::h6f9e6e1dfabffe15Tpl
  13:     0x7f1547838cd0 - middle::typeck::check::check_bare_fn::hd8e6e1e72f752c55Yel
  14:     0x7f15478354f0 - middle::typeck::check::check_item::hf04c986f355a71328yl
  15:     0x7f1547838a10 - middle::typeck::check::check_item_types::he31957e62cc70b4d8dl
  16:     0x7f1547b32ab0 - util::common::time::h12934209058077514157
  17:     0x7f1547b31fa0 - middle::typeck::check_crate::h771a6cf74a1cf458PVO
  18:     0x7f154903bea0 - driver::driver::phase_3_run_analysis_passes::h23fb9d0bb1403e07VlS
  19:     0x7f1549032980 - driver::driver::compile_input::h776cb21295573b2712R
  20:     0x7f15490b9550 - driver::run::closure.59799
  21:     0x7f1548eebde0 - task::TaskBuilder::try_future::closure.38979
  22:     0x7f1548a3e1b0 - task::TaskBuilder::spawn_internal::closure.30287
  23:     0x7f15486c6220 - task::Task::spawn::closure.5717
  24:     0x7f15487286b0 - rust_try_inner
  25:     0x7f15487286a0 - rust_try
  26:     0x7f15486c6120 - task::Task::run::hdca98e8b61eea237cOb
  27:     0x7f15486c5d70 - task::Task::spawn::closure.5693
  28:     0x7f15486c7200 - thread::thread_start::hbd8823507422f48cf6b
  29:     0x7f15439fafe0 - start_thread
  30:     0x7f1548395c99 - __clone
  31:                0x0 - <unknown>

[Twisol]

This no longer causes an ICE.

foo.rs:4:5: 4:21 error: binary assignment operation `+=` cannot be applied to type `Struct`
foo.rs:4     Struct += Struct;
             ^~~~~~~~~~~~~~~~
foo.rs:4:5: 4:11 error: illegal left-hand side expression [E0067]
foo.rs:4     Struct += Struct;
             ^~~~~~
error: aborting due to 2 previous errors

rustc 0.13.0-nightly (c6c786671 2015-01-04 00:50:59 +0000)
binary: rustc
commit-hash: c6c786671d692d7b13c2e5c68a53001327b4b125
commit-date: 2015-01-04 00:50:59 +0000
host: x86_64-apple-darwin
release: 0.13.0-nightly

[kmcallister]

Confirmed on

rustc 0.13.0-dev (84f5ad867 2014-12-30 17:51:21 +0000)
binary: rustc
commit-hash: 84f5ad8679c7fc454473ffbf389030f3e5fee379
commit-date: 2014-12-30 17:51:21 +0000
host: x86_64-unknown-linux-gnu
release: 0.13.0-dev