Rubinius fails to build on macOS in GitHub Actions

[eregon]

1. What command did you run?

I ran

./configure --prefix=$HOME/.rubies/rubinius-4.13
make
make install

2. What behavior did you expect?

I expected it builds.

3. What behavior did you get instead?

I observed a SEGV.

4. What version of Rubinius?

4.13

5. What version of operating system?

macOS Mojave 10.15.

7. How did you build your version of Rubinius?

• I built manually from a tarball.

---

I got a SEGV while building on macOS:

RBC rexml/element.rb
The Rubinius process is aborting with signal: SIGSEGV
--- begin system info ---
node: info: Mac-1297.local Darwin Kernel Version 19.2.0: Sat Nov  9 03:47:04 PST 2019; root:xnu-6153.61.1~20/RELEASE_X86_64
--- end system info ---
--- begin rubinius info ---
process: info: runner rbx 59061 4.13 10.0 2020-01-20 806f3be4 9.0.0 JIT disabled
--- end rubinius info ---
--- begin system backtrace ---
0   rbx                                 0x000000010d2d8cf9 _ZN8rubiniusL20abandon_ship_handlerEiP9__siginfoPv + 249
1   libsystem_platform.dylib            0x00007fff6486742d _sigtramp + 29
2   ???                                 0x00007000092cef60 0x0 + 123145456250720
3   rbx                                 0x000000010d250fbb _ZN8rubiniusL7kind_ofINS_6StringEEEbPKNS_6ObjectE + 34
4   rbx                                 0x000000010d250f3d _ZN8rubinius12instructions11object_to_sEPNS_5StateEPNS_9CallFrameEl + 118
5   rbx                                 0x000000010d250e9d _ZN8rubinius11interpreter11object_to_sEPNS_5StateEPNS_9CallFrameEPKl + 33
6   rbx                                 0x000000010d24aac0 _ZN8rubinius11Interpreter7executeEPNS_5StateEPNS_11MachineCodeE + 64

https://github.com/eregon/ruby-install-builder/runs/408680687

A second try also ended in a SEGV, this time for RBC rubygems/package.rb

RBC rubygems/package.rb
The Rubinius process is aborting with signal: SIGSEGV
--- begin system info ---
node: info: Mac-1457.local Darwin Kernel Version 19.2.0: Sat Nov  9 03:47:04 PST 2019; root:xnu-6153.61.1~20/RELEASE_X86_64
--- end system info ---
--- begin rubinius info ---
process: info: runner rbx 59128 4.13 10.0 2020-01-20 806f3be4 9.0.0 JIT disabled
--- end rubinius info ---
--- begin system backtrace ---
0   rbx                                 0x00000001047eccf9 _ZN8rubiniusL20abandon_ship_handlerEiP9__siginfoPv + 249
1   libsystem_platform.dylib            0x00007fff695c142d _sigtramp + 29
2   rbx                                 0x000000010475eac0 _ZN8rubinius11Interpreter7executeEPNS_5StateEPNS_11MachineCodeE + 64
3   rbx                                 0x0000000104767a8e _ZN8rubiniusL2asINS_9ByteArrayEEEPT_PNS_6ObjectE + 32
4   rbx                                 0x0000000104767799 _ZN8rubinius12instructions12string_buildEPNS_5StateEPNS_9CallFrameEl + 146
5   rbx                                 0x00000001047676dd _ZN8rubinius11interpreter12string_buildEPNS_5StateEPNS_9CallFrameEPKl + 33

https://github.com/eregon/ruby-install-builder/runs/408693316

Extracted from #3828

[eregon]

Additional questions:

• It seems llvm from Homebrew needs to be installed, is the system one not enough?
• Is llvm only needed at build time or also at runtime?

I would be unfortunate to need it at runtime because it's not installed by default in GitHub Actions and it takes ~1min35s to install via Homebrew.

BTW, https://book.rubinius.com/manuscript/getting_rubinius.html mentions llvm38 but that formula no longer exists.

[eregon]

A third try, also SEGV:

RBC core/time.rb
The Rubinius process is aborting with signal: SIGSEGV
--- begin system info ---
node: info: Mac-1297.local Darwin Kernel Version 19.2.0: Sat Nov  9 03:47:04 PST 2019; root:xnu-6153.61.1~20/RELEASE_X86_64
--- end system info ---
--- begin rubinius info ---
process: info: runner rbx 59020 4.13 10.0 2020-01-20 806f3be4 9.0.0 JIT disabled
--- end rubinius info ---
--- begin system backtrace ---
0   rbx                                 0x0000000109096cf9 _ZN8rubiniusL20abandon_ship_handlerEiP9__siginfoPv + 249
1   libsystem_platform.dylib            0x00007fff6ecb042d _sigtramp + 29
2   ???                                 0x00007fc796287750 0x0 + 140495194453840
3   rbx                                 0x0000000109011a8e _ZN8rubiniusL2asINS_9ByteArrayEEEPT_PNS_6ObjectE + 32
4   rbx                                 0x0000000109011799 _ZN8rubinius12instructions12string_buildEPNS_5StateEPNS_9CallFrameEl + 146
5   rbx                                 0x00000001090116dd _ZN8rubinius11interpreter12string_buildEPNS_5StateEPNS_9CallFrameEPKl + 33
6   rbx                                 0x0000000109008ac0 _ZN8rubinius11Interpreter7executeEPNS_5StateEPNS_11MachineCodeE + 64

https://github.com/eregon/ruby-install-builder/runs/408706695

[brixen]

@eregon I fixed a bunch of stuff for memory headers and memory handles, I'll tag a release soon.

For LLVM, it's only a build-time dependency, but I'm only going to support the latest release (currently 9.0). If that isn't available, the build just won't have any LLVM-dependent features. I'll take me some time to clean up all the obsolete LLVM cruft, so thanks for pointing that out.

[brixen]

@eregon please try 4.14.

[eregon]

4.14 still segfaults:
https://github.com/eregon/ruby-install-builder/runs/410673147

RBC core/file.rb
The Rubinius process is aborting with signal: SIGSEGV
--- begin system info ---
node: info: Mac-1461.local Darwin Kernel Version 19.2.0: Sat Nov  9 03:47:04 PST 2019; root:xnu-6153.61.1~20/RELEASE_X86_64
--- end system info ---
--- begin rubinius info ---
process: info: runner rbx 59094 4.14 10.0 2020-01-26 02f6c527 9.0.0 JIT disabled
--- end rubinius info ---
--- begin system backtrace ---
0   rbx                                 0x000000010bdc9859 _ZN8rubiniusL20abandon_ship_handlerEiP9__siginfoPv + 249
1   libsystem_platform.dylib            0x00007fff642d442d _sigtramp + 29
2   ???                                 0x000070000901ee10 0x0 + 123145453432336
3   rbx                                 0x000000010bd794fe _ZN8rubinius6memory8MainHeap14collect_finishEPNS_5StateE + 46
4   rbx                                 0x000000010bd7cc55 _ZN8rubinius6memory12MemoryTracer10trace_heapEPNS_5StateE + 1525
5   rbx                                 0x000000010bd769d1 _ZNSt3__110__function6__funcIZN8rubinius6memory9Collector7collectEPNS2_5StateEE3$_2NS_9allocatorIS7_EEFvvEEclEv + 113
6   rbx                                 0x000000010bd7558f _ZN8rubinius6memory9Collector19stop_for_collectionEPNS_5StateENSt3__18functionIFvvEEE + 367
7   rbx                                 0x000000010bd75653 _ZN8rubinius6memory9Collector7collectEPNS_5StateE + 99
8   rbx                                 0x000000010bd759fd _ZN8rubinius6memory9Collector6Worker3runEPNS_5StateE + 269
9   rbx                                 0x000000010bd6fb91 _ZN8rubinius13MachineThread3runEPv + 161
10  libsystem_pthread.dylib             0x00007fff642dfe65 _pthread_start + 148
11  libsystem_pthread.dylib             0x00007fff642db83b thread_start + 15
--- end system backtrace ---
--- begin Ruby backtraces ---
--- Thread 1 backtrace ---
Integer#to_s in core/integer.rb:1498 (+38)
__block__ in rubinius/code/compiler/compiled_file.rb:316 (+52)
...

[eregon]

This time it seems a SEGV from the GC.

[brixen]

@eregon hm, I fixed something there, too. I'm in the middle of a pretty big reorg of some internal data structures. I've switched CI to Travis, which is building. I'll ping you when I tag the next release.

[eregon]

I got a lucky build that succeeded: https://github.com/eregon/ruby-builder/runs/421811427
I didn't change anything since the last build though, so it just seems luck to not get the segfault.

[eregon]

OTOH it still segfaults at runtime for bundle install:
https://github.com/eregon/use-ruby-action/runs/421838829
Also on Ubuntu 16.04:
https://github.com/eregon/use-ruby-action/runs/421838746

[brixen]

@eregon you must use the version of Bundler that is installed by Rubinius.

You may have better success with 4.15.

[eregon]

Where is the bundle executable? It's not in install_prefix/bin/bundle like in other Ruby, so that's why the logic ends up installing Bundler (https://github.com/eregon/ruby-builder/runs/421811427).
I guess in install_prefix/gems/bin/bundle?
MRI 2.6+ ships a bin/bundle so it would be nice to match that.

[eregon]

Rubinius 4.15 fails to compile on Ubuntu 16.04:
https://github.com/eregon/ruby-builder/runs/421971027

2: CXX machine/memory.cpp
machine/memory.cpp:195:29: error: unused variable 'vm' [-Werror,-Wunused-variable]
  if(rubinius::ThreadState* vm = rubinius::ThreadState::current()) {
                            ^
machine/memory.cpp:206:29: error: unused variable 'vm' [-Werror,-Wunused-variable]
  if(rubinius::ThreadState* vm = rubinius::ThreadState::current()) {
                            ^
machine/memory.cpp:216:29: error: unused variable 'vm' [-Werror,-Wunused-variable]
  if(rubinius::ThreadState* vm = rubinius::ThreadState::current()) {
                            ^
machine/memory.cpp:230:29: error: unused variable 'vm' [-Werror,-Wunused-variable]
  if(rubinius::ThreadState* vm = rubinius::ThreadState::current()) {
                            ^
3: CXX machine/memory/code_manager.cpp

[eregon]

It still segfaults with 4.14 on Ubuntu 16.04 with the bundled bundler:
https://github.com/eregon/ruby-builder/runs/422071201

[brixen]

@eregon not supporting anything older than 18.04. Bundler is pre-installed, so you'll need to point to it with your script. If you're curious https://github.com/rubygems/bundler/issues/6274.

[brixen]

@eregon please close this issue if 18.04 is working with pre-installed Bundler.