rustc: "error: internal compiler error: debuginfo::set_members_of_composite_type() - Already completed forward declaration re-encountered."

[a-p-]

Versions:

$ rustc --version
rustc 0.11.0-pre (11aa731 2014-05-23 14:56:24 -0700)
host: x86_64-unknown-linux-gnu
$ uname -a
Linux test 3.13-1-amd64 #1 SMP Debian 3.13.10-1 (2014-04-15) x86_64 GNU/Linux

Code to reproduce the ICE:

fn test(a: &Vec<u8>) {
  print!("{}", a.len());
}

pub fn main() {
  let data = vec!();
  test(&data);
}

Compilation output (assuming code is in test.rs):

$ RUST_BACKTRACE=1 rustc -g test.rs 
test.rs:1:1: 1:1 error: internal compiler error: debuginfo::set_members_of_composite_type() - Already completed forward declaration re-encountered.
test.rs:1 fn test(a: &Vec<u8>) {
          ^
note: the compiler hit an unexpected failure path. 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' failed at 'Box<Any>', /tmp/rust/src/libsyntax/diagnostic.rs:106
stack backtrace:
   1:     0x7f6088d547b0 - rt::backtrace::imp::write::h91511e92fbebf61dJSy::v0.11.0.pre
   2:     0x7f6088cd4900 - rt::unwind::begin_unwind_inner::hc6a3eade6662bd0cRsy::v0.11.0.pre
   3:     0x7f60876d4cb0 - rt::unwind::begin_unwind::h14424584252031250192::v0.11.0.pre
   4:     0x7f60876d4be0 - diagnostic::SpanHandler::span_bug::hbb40ab336641d6bcoUb::v0.11.0.pre
   5:     0x7f6089823d00 - driver::session::Session::span_bug::hbc579a9c1652b4dcWQk::v0.11.0.pre
   6:     0x7f608992a540 - middle::trans::debuginfo::set_members_of_composite_type::ha39f45d6f9c0cb39stB::v0.11.0.pre
   7:     0x7f6089928e50 - middle::trans::debuginfo::RecursiveTypeDescription::finalize::h0fe21aef99d3e1c0I8A::v0.11.0.pre
   8:     0x7f608991d440 - middle::trans::debuginfo::type_metadata::h98963d42bb116c2fCVB::v0.11.0.pre
   9:     0x7f608991d440 - middle::trans::debuginfo::type_metadata::h98963d42bb116c2fCVB::v0.11.0.pre
  10:     0x7f6089932ee0 - middle::trans::debuginfo::vec_slice_metadata::h5b5525bc44b17f0dCKB::v0.11.0.pre
  11:     0x7f608991d440 - middle::trans::debuginfo::type_metadata::h98963d42bb116c2fCVB::v0.11.0.pre
  12:     0x7f6089921730 - middle::trans::debuginfo::declare_local::h3f3d7f3d971eec2bBLA::v0.11.0.pre
  13:     0x7f6089920a10 - middle::trans::debuginfo::create_local_var_metadata::closure.63979
  14:     0x7f6089d15cc0 - middle::pat_util::pat_bindings::closure.76254
  15:     0x7f608771bcd0 - ast_util::walk_pat::h73d09c5bbd81fc4aBNv::v0.11.0.pre
  16:     0x7f60897fbbd0 - middle::trans::controlflow::trans_stmt::hebe30cb187b2a930B2a::v0.11.0.pre
  17:     0x7f60897fdcb0 - middle::trans::controlflow::trans_block::hc64c9e56aa358790I7a::v0.11.0.pre
  18:     0x7f608983e730 - middle::trans::expr::trans_rvalue_dps_unadjusted::h9c3393158ea8f3e88hf::v0.11.0.pre
  19:     0x7f60897fd5a0 - middle::trans::expr::trans_into::h6b67f346e56d2aaagse::v0.11.0.pre
  20:     0x7f60898ee990 - middle::trans::_match::trans_match_inner::he680468c7e8edd8bk7s::v0.11.0.pre
  21:     0x7f608983e730 - middle::trans::expr::trans_rvalue_dps_unadjusted::h9c3393158ea8f3e88hf::v0.11.0.pre
  22:     0x7f60897fd5a0 - middle::trans::expr::trans_into::h6b67f346e56d2aaagse::v0.11.0.pre
  23:     0x7f60897fc780 - middle::trans::controlflow::trans_stmt_semi::h95ab3162fcdb8669P6a::v0.11.0.pre
  24:     0x7f60897fbbd0 - middle::trans::controlflow::trans_stmt::hebe30cb187b2a930B2a::v0.11.0.pre
  25:     0x7f60897fdcb0 - middle::trans::controlflow::trans_block::hc64c9e56aa358790I7a::v0.11.0.pre
  26:     0x7f60898bb6c0 - middle::trans::base::trans_closure::hd893efe09250c8a3Php::v0.11.0.pre
  27:     0x7f60897c6df0 - middle::trans::base::trans_fn::h02396ab03da5196a5pp::v0.11.0.pre
  28:     0x7f60897c1110 - middle::trans::base::trans_item::h4715e8b19ebc5b3eCBp::v0.11.0.pre
  29:     0x7f60898ca380 - middle::trans::base::trans_crate::h97a887f98edb0d3dpoq::v0.11.0.pre
  30:     0x7f608a0a1430 - driver::driver::phase_4_translate_to_llvm::h29f793bbb3691a0c01j::v0.11.0.pre
  31:     0x7f608a096b40 - driver::driver::compile_input::hf7a007097756b7ceBJj::v0.11.0.pre
  32:     0x7f608a160180 - driver::run_compiler::h6c18401fac048ee4umm::v0.11.0.pre
  33:     0x7f608a1600a0 - driver::main_args::closure.93487
  34:     0x7f608a174b50 - driver::monitor::closure.94559
  35:     0x7f608a170070 - task::TaskBuilder::try::closure.94322
  36:     0x7f608926c970 - task::spawn_opts::closure.7801
  37:     0x7f6088d4e6e0 - rt::task::Task::run::closure.25256
  38:     0x7f6088dadab0 - rust_try
  39:     0x7f6088d4e630 - rt::task::Task::run::h9a36fd2f34280279uhw::v0.11.0.pre
  40:     0x7f608926c720 - task::spawn_opts::closure.7774
  41:     0x7f6088d52b60 - rt::thread::thread_start::h057270a612f2c73020w::v0.11.0.pre
  42:     0x7f60867fdfa0 - start_thread
  43:     0x7f608899cbe9 - __clone
  44:                0x0 - <unknown>

$ 

This might be related to issue #14385.

[jdm]

Curiously, I can't reproduce this:

[jdm@rosencrantz tmp]$ ~/Downloads/rust-nightly-x86_64-unknown-linux-gnu/bin/rustc --version ice.rs
rustc 0.11.0-pre-nightly (33c3edd 2014-05-23 00:31:27 -0700)
host: x86_64-unknown-linux-gnu
[jdm@rosencrantz tmp]$ ~/Downloads/rust-nightly-x86_64-unknown-linux-gnu/bin/rustc -g ice.rs
[jdm@rosencrantz tmp]$

[michaelwoerister]

Thanks for filing this, @a-p-! This probably is a duplicate of the other issue you mentioned, but let's leave it open for the time being, since the error messages do look a bit different.

[michaelwoerister]

@a-p- Would you care to take a look if this issue still occurs for you with a recent rustc version? Pull request #14486 should have improved the situation here.

[a-p-]

@michaelwoerister Hello, I've tried with a new build of a recent version of rustc, but still get an ICE:

$ /opt/rust/bin/rustc --version
rustc 0.11.0-pre (0c74911 2014-06-05 00:51:48 -0700)
host: x86_64-unknown-linux-gnu
$ uname -a
Linux test 3.14-1-amd64 #1 SMP Debian 3.14.4-1 (2014-05-13) x86_64 GNU/Linux
$ RUST_BACKTRACE=1 /opt/rust/bin/rustc -g test.rs 
test.rs:1:1: 1:1 error: internal compiler error: debuginfo::set_members_of_composite_type() - Already completed forward declaration re-encountered.
test.rs:1 fn test(a: &Vec<u8>) {
          ^
note: the compiler hit an unexpected failure path. 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' failed at 'Box<Any>', /tmp/rust/src/libsyntax/diagnostic.rs:106
stack backtrace:
   1:     0x7fb260921110 - rt::backtrace::imp::write::h5b011fbced4690bc0vx::v0.11.0.pre
   2:     0x7fb2608ab760 - rt::unwind::begin_unwind_inner::h4995bd0c39c49d8415w::v0.11.0.pre
   3:     0x7fb25f699340 - rt::unwind::begin_unwind::h18387254772016977913::v0.11.0.pre
   4:     0x7fb25f699270 - diagnostic::SpanHandler::span_bug::h1ebafc0cc5381e817Yb::v0.11.0.pre
   5:     0x7fb26140ca00 - driver::session::Session::span_bug::h3cb0e5e4a1a58907iAn::v0.11.0.pre
   6:     0x7fb261519830 - middle::trans::debuginfo::set_members_of_composite_type::h9d6b6d26b490c2fdSJB::v0.11.0.pre
   7:     0x7fb261518180 - middle::trans::debuginfo::RecursiveTypeDescription::finalize::hfc1025fa8d8596bezdB::v0.11.0.pre
   8:     0x7fb26150c430 - middle::trans::debuginfo::type_metadata::h26dd280d0653fbfa9bC::v0.11.0.pre
   9:     0x7fb26150c430 - middle::trans::debuginfo::type_metadata::h26dd280d0653fbfa9bC::v0.11.0.pre
  10:     0x7fb2615228d0 - middle::trans::debuginfo::vec_slice_metadata::h0ec8841b6b25512f20B::v0.11.0.pre
  11:     0x7fb26150c430 - middle::trans::debuginfo::type_metadata::h26dd280d0653fbfa9bC::v0.11.0.pre
  12:     0x7fb2615104c0 - middle::trans::debuginfo::declare_local::h9ad0c49244a464fcqVA::v0.11.0.pre
  13:     0x7fb26150f7a0 - middle::trans::debuginfo::create_local_var_metadata::closure.65228
  14:     0x7fb261908ce0 - middle::pat_util::pat_bindings::closure.77495
  15:     0x7fb25f6e3530 - ast_util::walk_pat::hfb30fd5660745952G8v::v0.11.0.pre
  16:     0x7fb2613e4c40 - middle::trans::controlflow::trans_stmt::h71e5e3cdf054599bX0a::v0.11.0.pre
  17:     0x7fb2613e6d20 - middle::trans::controlflow::trans_block::h781cb455d116b1e645a::v0.11.0.pre
  18:     0x7fb2614273f0 - middle::trans::expr::trans_rvalue_dps_unadjusted::h159ddfe7ad51b9ebBaf::v0.11.0.pre
  19:     0x7fb2613e6610 - middle::trans::expr::trans_into::hcac93d6d00849afdJke::v0.11.0.pre
  20:     0x7fb2614dca80 - middle::trans::_match::trans_match_inner::h28ab07adb784f590Bbt::v0.11.0.pre
  21:     0x7fb2614273f0 - middle::trans::expr::trans_rvalue_dps_unadjusted::h159ddfe7ad51b9ebBaf::v0.11.0.pre
  22:     0x7fb2613e6610 - middle::trans::expr::trans_into::hcac93d6d00849afdJke::v0.11.0.pre
  23:     0x7fb2613e57f0 - middle::trans::controlflow::trans_stmt_semi::h3f66501f21849971b5a::v0.11.0.pre
  24:     0x7fb2613e4c40 - middle::trans::controlflow::trans_stmt::h71e5e3cdf054599bX0a::v0.11.0.pre
  25:     0x7fb2613e6d20 - middle::trans::controlflow::trans_block::h781cb455d116b1e645a::v0.11.0.pre
  26:     0x7fb2614a8000 - middle::trans::base::trans_closure::h5f727b60571a9bceM7o::v0.11.0.pre
  27:     0x7fb2613af740 - middle::trans::base::trans_fn::h82bf58d3dcfe40ed9fp::v0.11.0.pre
  28:     0x7fb2613a8a40 - middle::trans::base::trans_item::hf8978f932565ffa2Xwp::v0.11.0.pre
  29:     0x7fb2614b81a0 - middle::trans::base::trans_crate::hc6f568a97ee25e04Ypq::v0.11.0.pre
  30:     0x7fb261c992b0 - driver::driver::phase_4_translate_to_llvm::h182ce6d3422188faZKm::v0.11.0.pre
  31:     0x7fb261c8e9c0 - driver::driver::compile_input::h4d9d1d436c03b1d3Asm::v0.11.0.pre
  32:     0x7fb261d59880 - driver::main_args::closure.94807
  33:     0x7fb261d6e5a0 - driver::monitor::closure.95878
  34:     0x7fb261d69ac0 - task::TaskBuilder::try::closure.95641
  35:     0x7fb260e50a90 - task::spawn_opts::closure.7844
  36:     0x7fb26091b110 - rt::task::Task::run::closure.25203
  37:     0x7fb2609803c0 - rust_try
  38:     0x7fb26091b060 - rt::task::Task::run::h1c418364160adcf9FUu::v0.11.0.pre
  39:     0x7fb260e50840 - task::spawn_opts::closure.7817
  40:     0x7fb26091f430 - rt::thread::thread_start::hbbafda47cc55f18ddEv::v0.11.0.pre
  41:     0x7fb25e3b8000 - start_thread
  42:     0x7fb260569fc9 - __clone
  43:                0x0 - <unknown>

$ 

I've also tried with a nightly build, but it does not give an ICE, however:

$ /tmp/rust-nightly-x86_64-unknown-linux-gnu/bin/rustc --version
rustc 0.11.0-pre-nightly (d130acc 2014-06-03 23:51:41 -0700)
host: x86_64-unknown-linux-gnu
$ /tmp/rust-nightly-x86_64-unknown-linux-gnu/bin/rustc -g test.rs 
$ 

The build that results in the ICE was compiled using Clang and linked using gold:

$ echo $CC
clang
$ echo $CFLAGS
-O3 -ggdb
$ $CC --version
Debian clang version 3.4.1-4 (tags/RELEASE_34/dot1-final) (based on LLVM 3.4.1)
Target: x86_64-pc-linux-gnu
Thread model: posix
$ echo $CXX
clang++
$ echo $CXXFLAGS
-O3 -ggdb
$ $CXX --version
Debian clang version 3.4.1-4 (tags/RELEASE_34/dot1-final) (based on LLVM 3.4.1)
Target: x86_64-pc-linux-gnu
Thread model: posix
$ echo $LD
gold
$ $LD --version
GNU gold (GNU Binutils for Debian 2.24.51.20140604) 1.11
Copyright (C) 2014 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.
$ 

Rust's configure script was executed like:

$ ./configure --prefix=/opt/rust --enable-clang --llvm-root=/usr

The llvm-config script reports:

$ /usr/bin/llvm-config --version --prefix --build-mode
3.3
/usr/lib/llvm-3.3
Release
$ 

[michaelwoerister]

I'd like to confirm that this is solved, but I get linker errors when I try to compile rustc with LLVM 3.3. @alexcrichton, do we officially support LLVM 3.3?

An excerpt of the errors I'm getting on OSX:

Undefined symbols for architecture x86_64:
  "std::ios_base::ios_base()", referenced from:
      llvm::BallLarusNode::getName() in libLLVMAnalysis.a(PathNumbering.o)
  "std::locale::locale()", referenced from:
      llvm::BallLarusNode::getName() in libLLVMAnalysis.a(PathNumbering.o)
  "std::basic_ios<char, std::char_traits<char> >::init(std::basic_streambuf<char, std::char_traits<char> >*)", referenced from:
      llvm::BallLarusNode::getName() in libLLVMAnalysis.a(PathNumbering.o)
  "std::basic_ios<char, std::char_traits<char> >::clear(std::_Ios_Iostate)", referenced from:
      llvm::BallLarusNode::getName() in libLLVMAnalysis.a(PathNumbering.o)

[alexcrichton]

We don't necessarily officially support LLVM 3.3, but it is very nice to support LLVM 3.3! Is the linker error a result of a change you made, or is it the state of master today?

[michaelwoerister]

This is master from just now. I'm currently in the process of trying it out on linux.

[alexcrichton]

Hm that is suspicious. It looks like it's something that should be relatively easy to fix, but I'm not certain to the cause just by looking at it.

[michaelwoerister]

Maybe my local system is messed up somehow. I wouldn't give my "bug report" just too much weight yet :)

[michaelwoerister]

OK, on Linux do not get any errors when compiling rustc with an out-of-tree LLVM 3.3 installation. I'll add the test case from the OP to the debuginfo test suite.