Closed
Description
By using xml-rs library on a project, I had a ICE when matching a struct variant for XML events.
I did some "code reduction" to get a minimal example of the bug.
Full log here: https://gist.github.com/cc5689c976714e5f6f03
UPDATE: Moved gist into the bug report
$ rustc --crate-type rlib ext.rs
$ rustc -L . --crate-type rlib lib.rs
error: internal compiler error: unexpected panic
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 'called `Option::unwrap()` on a `None` value', /home/rustbuild/src/rust-buildbot/slave/nightly-linux/build/src/libcore/option.rs:360
stack backtrace:
1: 0x7f0b5d98b500 - rt::backtrace::imp::write::heed5901f9756dd23BOx
2: 0x7f0b5d98e740 - failure::on_fail::ha44d264deefff4481fy
3: 0x7f0b5d5dff30 - unwind::begin_unwind_inner::h8d953f2c1d079705CJc
4: 0x7f0b5d5dfa30 - unwind::begin_unwind_fmt::hbd19a3b96951d460ZGc
5: 0x7f0b5d5df9f0 - rust_begin_unwind
6: 0x7f0b5d628430 - panicking::panic_fmt::h3f7fd7e307be735dRtl
7: 0x7f0b5d626130 - panicking::panic::h666b719185178942hrl
8: 0x7f0b5bc48f80 - middle::borrowck::move_data::fragments::add_fragment_siblings::h6999caa25c015a38sEg
9: 0x7f0b5bc45fa0 - middle::borrowck::move_data::fragments::fixup_fragment_sets::hd2699c681cdada54Smg
10: 0x7f0b5bc50170 - middle::borrowck::move_data::FlowedMoveData<'a, 'tcx>::new::haed7f1b248ae6bbaWMh
11: 0x7f0b5bc5b0b0 - middle::borrowck::build_borrowck_dataflow_data::h464959412a7d843aQ6h
12: 0x7f0b5bc58120 - middle::borrowck::borrowck_fn::he5b930fb1af0e36fZ3h
13: 0x7f0b5bc5a1d0 - visit::walk_item::h3614721696940885168
14: 0x7f0b5bc58f30 - visit::walk_mod::h6530408502505551912
15: 0x7f0b5bc58930 - middle::borrowck::check_crate::h95dab899bf8d0bceFXh
16: 0x7f0b5ddfcb10 - util::common::time::h18154370801334805047
17: 0x7f0b5ddbd4d0 - driver::phase_3_run_analysis_passes::h4686c048b8307dc2Cta
18: 0x7f0b5ddac260 - driver::compile_input::hf96889ff0bafd855pba
19: 0x7f0b5de49070 - run_compiler::h9db34658886d7891EYb
20: 0x7f0b5de48f60 - run::closure.21438
21: 0x7f0b5de5a970 - task::TaskBuilder::try_future::closure.22892
22: 0x7f0b5d963980 - task::TaskBuilder::spawn_internal::closure.30605
23: 0x7f0b5d5ddbd0 - task::Task::spawn::closure.5728
24: 0x7f0b5d63b250 - rust_try_inner
25: 0x7f0b5d63b240 - rust_try
26: 0x7f0b5d5ddcb0 - unwind::try::hf2f7fcf7ecc46c43Tyc
27: 0x7f0b5d5dda70 - task::Task::run::h911f3b3bbb0c433efKb
28: 0x7f0b5d5dd660 - task::Task::spawn::closure.5704
29: 0x7f0b5d5df0b0 - thread::thread_start::h051da3e5b33a422fw1b
30: 0x7f0b584ed250 - start_thread
31: 0x7f0b5d2b4589 - clone
32: 0x0 - <unknown>
ext.rs
pub enum Event {
Element {
name: String,
attrs: Vec<String>,
},
Error,
} lib.rs
extern crate ext;
use ext::Event;
fn dispatch(e: Event) {
match e {
Event::Element {
name: name,
..
} => {
println!("StartElement: {}", name);
}
_ => {}
}
}$ rustc --version=verbose
rustc 0.13.0-nightly (193390d0e 2014-12-11 22:56:54 +0000)
binary: rustc
commit-hash: 193390d0e48f6d8fb58acb7d0460c14acf907322
commit-date: 2014-12-11 22:56:54 +0000
host: x86_64-unknown-linux-gnu
release: 0.13.0-nightly