I get a segfault sporadically when I'm requiring toml-rb. I figured out that this happ

See PR at <a class="issue-link js-issue-link" data-error-text="Failed to load title" d

Minimal reproduction is available at <a href="https://github.com/vhiairrassary/citrus-

Segfault in Citrus during toml-rb initialization with Ruby 3.0 about citrus HOT 5 OPEN

mjackson commented on May 11, 2024

Segfault in Citrus during toml-rb initialization with Ruby 3.0

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Comments (5)

flavorjones commented on May 11, 2024 2

See PR at #61

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flavorjones commented on May 11, 2024 2

Note that the underlying issue is fixed in Ruby 3.0.3.

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vhiairrassary commented on May 11, 2024

Same issue on our side. Everything work perfectly until we migrate to Ruby 3.0.2. Here is the top of our trace

/opt/hostedtoolcache/Ruby/3.0.2/x64/lib/ruby/gems/3.0.0/gems/citrus-3.0.2/lib/citrus.rb:1286: [BUG] Segmentation fault at 0x000055892ffad208
ruby 3.0.2p***7 (2021-07-07 revision 0db68f0233) [x86_64-linux]

-- Control frame information -----------------------------------------------
c:0172 p:---- s:***35 e:00***34 CFUNC  :slice!
c:0171 p:0063 s:***29 e:00***28 METHOD /opt/hostedtoolcache/Ruby/3.0.2/x64/lib/ruby/gems/3.0.0/gems/citrus-3.0.2/lib/citrus.rb:1286 [FINISH]
c:0170 p:---- s:***20 e:00***19 CFUNC  :new
c:0169 p:0139 s:***13 e:00***12 METHOD /opt/hostedtoolcache/Ruby/3.0.2/x64/lib/ruby/gems/3.0.0/gems/citrus-3.0.2/lib/citrus.rb:1470
c:0168 p:0011 s:0998 e:000997 METHOD /opt/hostedtoolcache/Ruby/3.0.2/x64/lib/ruby/gems/3.0.0/gems/citrus-3.0.2/lib/citrus.rb:1330
c:0167 p:0003 s:0993 e:000992 METHOD /opt/hostedtoolcache/Ruby/3.0.2/x64/lib/ruby/gems/3.0.0/gems/citrus-3.0.2/lib/citrus.rb:1336
c:0166 p:0062 s:0988 e:000983 BLOCK  (eval):4 [FINISH]

As said above, it does not seem to happen on every run. Issue happens on macOS & Ubuntu.

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vhiairrassary commented on May 11, 2024

Minimal reproduction is available at https://github.com/vhiairrassary/citrus-issue-60. To reproduce the issue, I just use the calc grammar from citrus and run it indefinitely until it crashes. Full stack trace is available in the repository README.md file.

require 'citrus'
Citrus.load 'calc'

loop do
  puts Calc.parse('1 + 2 + 3').value
end

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flavorjones commented on May 11, 2024

Please note that this is a bug in Ruby 3.0.0-3.0.2. I've reported it upstream at https://bugs.ruby-lang.org/issues/18138 and submitted a PR to fix it at ruby/ruby#4787

In the meantime, I'll submit a PR to citrus that will work around the bug conditions.

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