ICE while building rustc on FreeBSD: assertion failed: self.raw.hash != self.hashes_end

[veddan]

Building rustc on FreeBSD fail with an ICE during stage1:

cfg: build triple x86_64-unknown-freebsd
cfg: host triples x86_64-unknown-freebsd
cfg: target triples x86_64-unknown-freebsd
cfg: enabling more debugging (CFG_ENABLE_DEBUG)
cfg: host for x86_64-unknown-freebsd is x86_64
cfg: os for x86_64-unknown-freebsd is unknown-freebsd
cfg: using CC=ccache clang (CFG_CC)
cfg: using CXX=clang++ (CFG_CXX)
cfg: disabling valgrind due to its unreliability on this platform
cfg: no lualatex found, deferring to xelatex
cfg: no xelatex found, deferring to pdflatex
cfg: no pdflatex found, disabling LaTeX docs
cfg: no pandoc found, omitting PDF and EPUB docs
cfg: no llnextgen found, omitting grammar-verification
rustc: x86_64-unknown-freebsd/stage0/lib/rustlib/x86_64-unknown-freebsd/lib/librustc
task 'rustc' failed at 'assertion failed: self.raw.hash != self.hashes_end', /usr/home/rustbuild/src/rust-buildbot/slave/snap3-bsd/build/src/libstd/collections/hashmap/table.rs:743
stack backtrace:
   1:          0x1b9ea00 - rt::backtrace::imp::write::ha5f69c9fae9548fd1Iq
   2:          0x1ba1a80 - failure::on_fail::hc7ab01eee1e04860t4q
   3:          0x1bc03c0 - unwind::begin_unwind_inner::h06474350b1d0d0e0RSd
   4:          0x1921ac0 - unwind::begin_unwind::h8803629750811694740
   5:          0x1926f20 - std..collections..hashmap..table..RawTable<ast..Name,codemap..Span>::glue_drop.44244::h99c601ec3eabf587
   6:          0x1928030 - local_data::TLDValue::new::d::h14987804644157393031
   7:          0x1bbd920 - core..option..Option<Box<collections..treemap..TreeNode<uint,local_data..TLDValue>>>::glue_drop.6521::h160d2d3587194201
   8:          0x1bbd920 - core..option..Option<Box<collections..treemap..TreeNode<uint,local_data..TLDValue>>>::glue_drop.6521::h160d2d3587194201
   9:          0x1bbe6a0 - task::Task::cleanup::closure.6628
  10:          0x1bc0f70 - rust_try_inner
  11:          0x1bc0f60 - rust_try
  12:          0x1bbe2d0 - unwind::try::h6c3c06fb2bf83c5azHd
  13:          0x1bbe140 - task::Task::run::hf4b7ebbf0af10e51RXc
  14:          0x1bbe3e0 - task::Task::cleanup::hbd385068572a3c547Zc
  15:          0x1bbe640 - task::Task::destroy::h9fca9728edc516d8HZc
  16:           0x460660 - task::spawn_opts::closure.8450
  17:          0x1bbf590 - thread::thread_start::h06464c46ccf096cb3hd
  18:        0x8025a3370 - <unknown>
  19:                0x0 - <unknown>
error: internal compiler error: unexpected failure

uname -a gives FreeBSD pcbsd 10.0-RELEASE-p15 FreeBSD 10.0-RELEASE-p15 #0: Wed Jul 9 15:46:53 UTC 2014 root@amd64-builder.pcbsd.org:/usr/obj/usr/src/sys/GENERIC amd64

[steveklabnik]

Does this still happen today?

[pczarn]

I'm getting the same ICE on linux, but during compiling stage2's libcore.

stack backtrace:
   1:     0x7fe8541e9540 - sys::backtrace::write::h327eaaaf8d06f8cfpRt
   2:     0x7fe85420c3d0 - failure::on_fail::ha67ff6264214772164z
   3:     0x7fe854177610 - rt::unwind::begin_unwind_inner::he9a71b1eb010e0b8ZJz
   4:     0x7fe8536290c0 - rt::unwind::begin_unwind::h7390311291878927563
   5:     0x7fe85364e7e0 - std..collections..hash..table..RawTable<syntax..ast..Name, (*>::glue_drop.14264::hd720afd492e3b274
   6:     0x7fe853661540 - std..collections..hash..table..RawTable<u32, std..collections..hash..set..HashSet<u32, std..collections..hash..state..DefaultState<rustc..util..nodemap..FnvHasher>>>::glue_drop.14543::hf7a3bf470f821dfd
   7:     0x7fe853698840 - Resolver::glue_drop.15449::haa86d9eeaa46612e
   8:     0x7fe853698040 - resolve_crate::h166b19f32b64ffdaByi
   9:     0x7fe854744cf0 - driver::phase_3_run_analysis_passes::h13374e85a1a62731EEa
  10:     0x7fe854732a20 - driver::compile_input::h271893b1aec24c35Aba
  11:     0x7fe8547f8b50 - run_compiler::hdec9687b5f4662f2e5b
  12:     0x7fe8547f72c0 - thunk::F.Invoke<A, R>::invoke::h15654788930951088931
  13:     0x7fe8547f61c0 - rt::unwind::try::try_fn::h10306438865730164293
  14:     0x7fe85427c770 - rust_try_inner
  15:     0x7fe85427c760 - rust_try
  16:     0x7fe8547f6470 - thunk::F.Invoke<A, R>::invoke::h3452119925705501931
  17:     0x7fe8541f9e10 - sys::thread::thread_start::h60a75d433610076acJw
  18:     0x7fe84f123250 - start_thread
  19:     0x7fe853e27219 - clone
  20:                0x0 - <unknown>

[pczarn]

@veddan, does this happen with system LLVM, enabled by passing --llvm-root to configure? If so, it's most likely the cause.

[veddan]

@pczarn, @steveklabnik this no longer happens to me. A plain ./configure && gmake produces a functioning rustc.

[steveklabnik]

@pczarn does this still reproduce for you?

[pczarn]

No, not since a while, even with the system's LLVM.

[steveklabnik]

Okay, I'm going to close then. If anyone can reproduce this, please let me know!