internal compiler error

[blaenk]

Building the latest version of the notify crate (1.2.0) yields an internal compiler error.

rustc 1.0.0-nightly (b0746ff19 2015-03-05) (built 2015-03-06)

output:

       Fresh inotify v0.1.7
       Fresh libc v0.1.2
       Fresh gcc v0.3.1
       Fresh time v0.1.19
   Compiling notify v1.2.0 (file:///home/blaenk/code/rust/rsnotify)
     Running `rustc src/lib.rs --crate-name notify --crate-type lib -g -C metadata=9f3e1aada36c2ecc -C extra-filename=-9f3e1aada36c2ecc --out-dir /home/blaenk/code/rust/rsnotify/target --emit=dep-info,link -L dependency=/home/blaenk/code/rust/rsnotify/target -L dependency=/home/blaenk/code/rust/rsnotify/target/deps --extern time=/home/blaenk/code/rust/rsnotify/target/deps/libtime-f5c2f62bb1bdf976.rlib --extern inotify=/home/blaenk/code/rust/rsnotify/target/deps/libinotify-d3ecb034a7f81481.rlib -L native=/home/blaenk/code/rust/rsnotify/target/build/time-f5c2f62bb1bdf976/out`
src/lib.rs:1:49: 1:53 warning: unused or unknown feature, #[warn(unused_features)] on by default
src/lib.rs:1 #![feature(path, io, core, rustc_private, libc, hash, std_misc, fs)]
                                                             ^~~~
src/lib.rs:1:22: 1:26 warning: unused or unknown feature, #[warn(unused_features)] on by default
src/lib.rs:1 #![feature(path, io, core, rustc_private, libc, hash, std_misc, fs)]
                                  ^~~~
src/inotify/mod.rs:27:5: 27:18 warning: use of deprecated item: use module-level free function, #[warn(deprecated)] on by default
src/inotify/mod.rs:27     Thread::spawn(move || {
                          ^~~~~~~~~~~~~
src/poll.rs:20:5: 20:18 warning: use of deprecated item: use module-level free function, #[warn(deprecated)] on by default
src/poll.rs:20     Thread::spawn(move || {
                   ^~~~~~~~~~~~~
/home/rustbuild/src/rust-buildbot/slave/nightly-dist-rustc-linux/build/src/libstd/sync/mutex.rs:177:37: 180:2 error: internal compiler error: debuginfo: Could not find scope info for node NodeExpr(Expr { id: 6267, node: ExprStruct(Path { span: Span { lo: BytePos(4570389), hi: BytePos(4570400), expn_id: ExpnId(4294967295) }, global: false, segments: [PathSegment { identifier: StaticMutex#0, parameters: AngleBracketedParameters(AngleBracketedParameterData { lifetimes: [], types: [], bindings: [] }) }] }, [Field { ident: Spanned { node: lock#0, span: Span { lo: BytePos(1772893), hi: BytePos(1772897), expn_id: ExpnId(4294967295) } }, expr: Expr { id: 6268, node: ExprPath(None, Path { span: Span { lo: BytePos(4570413), hi: BytePos(4570428), expn_id: ExpnId(4294967295) }, global: false, segments: [PathSegment { identifier: sys#0, parameters: AngleBracketedParameters(AngleBracketedParameterData { lifetimes: [], types: [], bindings: [] }) }, PathSegment { identifier: MUTEX_INIT#0, parameters: AngleBracketedParameters(AngleBracketedParameterData { lifetimes: [], types: [], bindings: [] }) }] }), span: Span { lo: BytePos(4570413), hi: BytePos(4570428), expn_id: ExpnId(4294967295) } }, span: Span { lo: BytePos(4570407), hi: BytePos(4570428), expn_id: ExpnId(4294967295) } }, Field { ident: Spanned { node: poison#0, span: Span { lo: BytePos(1772920), hi: BytePos(1772926), expn_id: ExpnId(4294967295) } }, expr: Expr { id: 6269, node: ExprPath(None, Path { span: Span { lo: BytePos(4570442), hi: BytePos(4570459), expn_id: ExpnId(4294967295) }, global: false, segments: [PathSegment { identifier: poison#0, parameters: AngleBracketedParameters(AngleBracketedParameterData { lifetimes: [], types: [], bindings: [] }) }, PathSegment { identifier: FLAG_INIT#0, parameters: AngleBracketedParameters(AngleBracketedParameterData { lifetimes: [], types: [], bindings: [] }) }] }), span: Span { lo: BytePos(4570442), hi: BytePos(4570459), expn_id: ExpnId(4294967295) } }, span: Span { lo: BytePos(4570434), hi: BytePos(4570459), expn_id: ExpnId(4294967295) } }], None), span: Span { lo: BytePos(4570389), hi: BytePos(4570462), expn_id: ExpnId(4294967295) } })
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
note: run with `RUST_BACKTRACE=1` for a backtrace
thread 'rustc' panicked at 'Box<Any>', /home/rustbuild/src/rust-buildbot/slave/nightly-dist-rustc-linux/build/src/libsyntax/diagnostic.rs:129

stack backtrace:
   1:     0x7fa176709f6f - sys::backtrace::write::h2f046b875b210aadOBA
   2:     0x7fa176734c82 - panicking::on_panic::h792ac47fb8c07faehHJ
   3:     0x7fa176669f2a - rt::unwind::begin_unwind_inner::hbffac672008352c8knJ
   4:     0x7fa173ac884d - rt::unwind::begin_unwind::h7782663023585067018
   5:     0x7fa173ac87f3 - diagnostic::SpanHandler::span_bug::h2cdd5e3b5b05e8f800D
   6:     0x7fa1743a1d03 - session::Session::span_bug::hae37e3dbc1cfddbalVp
   7:     0x7fa175eb96bc - trans::debuginfo::scope_metadata::h3b34d6a00870eb16ClE
   8:     0x7fa175dcb568 - trans::debuginfo::set_source_location::h9f5b090c644fcb73vPD
   9:     0x7fa175d7ff32 - trans::expr::trans_into::h3bbb0e210c9fb401Vph
  10:     0x7fa175d801f9 - trans::expr::trans_into::h3bbb0e210c9fb401Vph
  11:     0x7fa175de27df - trans::expr::trans_uniq_expr::hd6a8aea14a08d77bQmj
  12:     0x7fa175de344f - trans::expr::trans_unary::h35488c79f6cf1ec15ij
  13:     0x7fa175dcd96e - trans::expr::trans_unadjusted::ha9dfc6191d78ce67V6h
  14:     0x7fa175d80507 - trans::expr::trans_into::h3bbb0e210c9fb401Vph
  15:     0x7fa175e00859 - trans::expr::trans_adt::h66e672e44790aeeca9i
  16:     0x7fa175e0330f - trans::expr::trans_struct::closure.42092
  17:     0x7fa175ded176 - trans::expr::trans_struct::ha16472c37d95c70064i
  18:     0x7fa175dcf69d - trans::expr::trans_rvalue_dps_unadjusted::h62a8f691df1cee3cqCi
  19:     0x7fa175d804e6 - trans::expr::trans_into::h3bbb0e210c9fb401Vph
  20:     0x7fa175d81317 - trans::controlflow::trans_block::h4b526e186a057814x7d
  21:     0x7fa175e583b1 - trans::base::trans_closure::h194b7ad0474e43a46mt
  22:     0x7fa175d69948 - trans::base::trans_fn::h5416ef5d9cea730bZxt
  23:     0x7fa175d6b3e0 - trans::monomorphize::monomorphic_fn::he3c4a3a0040e5501Qud
  24:     0x7fa175db0f9e - trans::callee::trans_fn_ref_with_substs::h85a6252d422343b2qng
  25:     0x7fa175daf52e - trans::callee::trans_fn_ref::h7eebc758d7f24cf00bg
  26:     0x7fa175dac97d - trans::callee::trans::h1b831ba8a404e3ach1f
  27:     0x7fa175dc30eb - trans::callee::trans_call_inner::h15453122340747063984
  28:     0x7fa175dcfb40 - trans::expr::trans_rvalue_dps_unadjusted::h62a8f691df1cee3cqCi
  29:     0x7fa175d804e6 - trans::expr::trans_into::h3bbb0e210c9fb401Vph
  30:     0x7fa175e00859 - trans::expr::trans_adt::h66e672e44790aeeca9i
  31:     0x7fa175e0330f - trans::expr::trans_struct::closure.42092
  32:     0x7fa175ded176 - trans::expr::trans_struct::ha16472c37d95c70064i
  33:     0x7fa175dcf69d - trans::expr::trans_rvalue_dps_unadjusted::h62a8f691df1cee3cqCi
  34:     0x7fa175d804e6 - trans::expr::trans_into::h3bbb0e210c9fb401Vph
  35:     0x7fa175e91df7 - trans::_match::mk_binding_alloca::h16286962064436778167
  36:     0x7fa175d7f8ed - trans::base::init_local::he5827bc6a6f1a71eyBs
  37:     0x7fa175d80ff2 - trans::controlflow::trans_block::h4b526e186a057814x7d
  38:     0x7fa175e583b1 - trans::base::trans_closure::h194b7ad0474e43a46mt
  39:     0x7fa175d69948 - trans::base::trans_fn::h5416ef5d9cea730bZxt
  40:     0x7fa175d6b3e0 - trans::monomorphize::monomorphic_fn::he3c4a3a0040e5501Qud
  41:     0x7fa175db0f9e - trans::callee::trans_fn_ref_with_substs::h85a6252d422343b2qng
  42:     0x7fa175daf52e - trans::callee::trans_fn_ref::h7eebc758d7f24cf00bg
  43:     0x7fa175dac97d - trans::callee::trans::h1b831ba8a404e3ach1f
  44:     0x7fa175dc30eb - trans::callee::trans_call_inner::h15453122340747063984
  45:     0x7fa175dcfb40 - trans::expr::trans_rvalue_dps_unadjusted::h62a8f691df1cee3cqCi
  46:     0x7fa175dcd7c8 - trans::expr::trans_unadjusted::ha9dfc6191d78ce67V6h
  47:     0x7fa175d81c48 - trans::expr::trans::h4730571ef226d1543vh
  48:     0x7fa175dbeb43 - trans::callee::trans_args::hfa9ae7de71a462d8I3g
  49:     0x7fa175dc3fd0 - trans::callee::trans_call_inner::h15453122340747063984
  50:     0x7fa175dcfb40 - trans::expr::trans_rvalue_dps_unadjusted::h62a8f691df1cee3cqCi
  51:     0x7fa175dcd7c8 - trans::expr::trans_unadjusted::ha9dfc6191d78ce67V6h
  52:     0x7fa175d81c48 - trans::expr::trans::h4730571ef226d1543vh
  53:     0x7fa175dbeb43 - trans::callee::trans_args::hfa9ae7de71a462d8I3g
  54:     0x7fa175dc3fd0 - trans::callee::trans_call_inner::h15453122340747063984
  55:     0x7fa175dcfb40 - trans::expr::trans_rvalue_dps_unadjusted::h62a8f691df1cee3cqCi
  56:     0x7fa175d804e6 - trans::expr::trans_into::h3bbb0e210c9fb401Vph
  57:     0x7fa175e91df7 - trans::_match::mk_binding_alloca::h16286962064436778167
  58:     0x7fa175d7f8ed - trans::base::init_local::he5827bc6a6f1a71eyBs
  59:     0x7fa175d80ff2 - trans::controlflow::trans_block::h4b526e186a057814x7d
  60:     0x7fa175dcf0de - trans::expr::trans_rvalue_dps_unadjusted::h62a8f691df1cee3cqCi
  61:     0x7fa175d804e6 - trans::expr::trans_into::h3bbb0e210c9fb401Vph
  62:     0x7fa175e7a280 - trans::_match::trans_match_inner::h5d40a011e6b8915eYKw
  63:     0x7fa175dcf082 - trans::expr::trans_rvalue_dps_unadjusted::h62a8f691df1cee3cqCi
  64:     0x7fa175dcd7c8 - trans::expr::trans_unadjusted::ha9dfc6191d78ce67V6h
  65:     0x7fa175d81c48 - trans::expr::trans::h4730571ef226d1543vh
  66:     0x7fa175d7f9c2 - trans::base::init_local::he5827bc6a6f1a71eyBs
  67:     0x7fa175d80ff2 - trans::controlflow::trans_block::h4b526e186a057814x7d
  68:     0x7fa175e583b1 - trans::base::trans_closure::h194b7ad0474e43a46mt
  69:     0x7fa175d69948 - trans::base::trans_fn::h5416ef5d9cea730bZxt
  70:     0x7fa175d6b3e0 - trans::monomorphize::monomorphic_fn::he3c4a3a0040e5501Qud
  71:     0x7fa175db0f9e - trans::callee::trans_fn_ref_with_substs::h85a6252d422343b2qng
  72:     0x7fa175dc8fe5 - trans::meth::trans_method_callee::h175c0aff2b6fe67998x
  73:     0x7fa175dc4a19 - trans::callee::trans_call_inner::h18244630176801372264
  74:     0x7fa175dce8e9 - trans::expr::trans_rvalue_dps_unadjusted::h62a8f691df1cee3cqCi
  75:     0x7fa175d804e6 - trans::expr::trans_into::h3bbb0e210c9fb401Vph
  76:     0x7fa175e91df7 - trans::_match::mk_binding_alloca::h16286962064436778167
  77:     0x7fa175d7f8ed - trans::base::init_local::he5827bc6a6f1a71eyBs
  78:     0x7fa175d80ff2 - trans::controlflow::trans_block::h4b526e186a057814x7d
  79:     0x7fa175e583b1 - trans::base::trans_closure::h194b7ad0474e43a46mt
  80:     0x7fa175d69948 - trans::base::trans_fn::h5416ef5d9cea730bZxt
  81:     0x7fa175d66081 - trans::base::trans_item::h2af153dd6f7fd52bRVt
  82:     0x7fa175d65eb8 - trans::base::trans_item::h2af153dd6f7fd52bRVt
  83:     0x7fa175e6174c - trans::base::trans_crate::h5cb53f6b3e2377862Ru
  84:     0x7fa176d42613 - driver::phase_4_translate_to_llvm::h60575195b9fa298dENa
  85:     0x7fa176d1e05b - driver::compile_input::h9772b425fd1776fdNba
  86:     0x7fa176de2697 - run_compiler::h17c28dbe4dd58e3bV5b
  87:     0x7fa176de02c9 - thunk::F.Invoke<A, R>::invoke::h3041729087284544127
  88:     0x7fa176ddef40 - rt::unwind::try::try_fn::h11775082019993619070
  89:     0x7fa1767a4e38 - rust_try_inner
  90:     0x7fa1767a4e25 - rust_try
  91:     0x7fa176ddf6df - thunk::F.Invoke<A, R>::invoke::h10556879288050829464
  92:     0x7fa17671f9b5 - sys::thread::thread_start::hfe8c2cac3ec4afcdr8E
  93:     0x7fa1705a1373 - start_thread
  94:     0x7fa1762ea27c - __clone
  95:                0x0 - <unknown>

Could not compile `notify`.

Caused by:
  Process didn't exit successfully: `rustc src/lib.rs --crate-name notify --crate-type lib -g -C metadata=9f3e1aada36c2ecc -C extra-filename=-9f3e1aada36c2ecc --out-dir /home/blaenk/code/rust/rsnotify/target --emit=dep-info,link -L dependency=/home/blaenk/code/rust/rsnotify/target -L dependency=/home/blaenk/code/rust/rsnotify/target/deps --extern time=/home/blaenk/code/rust/rsnotify/target/deps/libtime-f5c2f62bb1bdf976.rlib --extern inotify=/home/blaenk/code/rust/rsnotify/target/deps/libinotify-d3ecb034a7f81481.rlib -L native=/home/blaenk/code/rust/rsnotify/target/build/time-f5c2f62bb1bdf976/out` (exit code: 101)

[blaenk]

I actually encountered an ICE within this library when attempting to change this:

fn unwatch(&mut self, path: &Path) -> Result<(), Error> {
  // FIXME:
  // once https://github.com/rust-lang/rust/pull/22351 gets merged,
  // just use a &Path
  match self.watches.remove(&path.to_path_buf()) {
    None => Err(Error::WatchNotFound),

to this:

fn unwatch(&mut self, path: &Path) -> Result<(), Error> {
  // FIXME:
  // once https://github.com/rust-lang/rust/pull/22351 gets merged,
  // just use a &Path
  match self.watches.remove(path) {
    None => Err(Error::WatchNotFound),

This caused an ICE, so I decided not to make that change yet. Updating to the nightly in the first post from rustc 1.0.0-nightly (b4c965ee8 2015-03-02) (built 2015-03-03) yielded this ICE without changing any code though.

[blaenk]

I just tested it and it works with the nightly from 2015-03-04, so it's the most recent nightly 2015-03-05 which I believe causes the problem.

[jdm]

This looks just like #22432, so I'm surprised that the nightly from 3/4 works.

[blaenk]

Yeah that's weird. It works with this:

rustc 1.0.0-nightly (fed12499e 2015-03-03) (built 2015-03-04)

[mahkoh]

One of my crates broke in the latest nightly with this bug when I use cargo build. cargo test has been broken for weeks.

[michaelwoerister]

This should have been fixed by PR #23074. If you find the time, please confirm with a current nightly.

[mahkoh]

Works for me.

[drewcrawford]

PR #23074 resolves for me.

[michaelwoerister]

Thanks for the feedback. Let's wait some more if the OP has a comment. Otherwise I'll close this tomorrow.

[blaenk]

Yeah I'll give this a try later today.

On Thursday, March 12, 2015, Michael Woerister notifications@github.com
wrote:

Thanks for the feedback. Let's wait some more if the OP has a comment.
Otherwise I'll close this tomorrow.

—
Reply to this email directly or view it on GitHub
#23133 (comment).

• Jorge Israel Peña

[blaenk]

Just confirmed that this is resolved. Thanks!!

[michaelwoerister]

Excellent. Thanks everyone!