Issue #20020 has been updated by andrea.salicetti@gmail.com (Andrea Salicetti). Here is a script to reproduce the same in rails/rspec: ```ruby # frozen_string_literal: true require "bundler/inline" gemfile(true) do source "https://rubygems.org" git_source(:github) { |repo| "https://github.com/#{repo}.git" } gem "rails", "= 7.0.8" gem "rspec" end require "active_record" require "rspec/autorun" class TestCase def matching?(string) /^((a|b|c)|\s?){1,3}$/.match?(string) end end describe TestCase do it 'should work' do expect(described_class.new.matching?('abc')).to be true end it 'should not work' do expect(described_class.new.matching?('xyz')).to be false end end ``` ---------------------------------------- Bug #20020: Segfault running regexp match? https://bugs.ruby-lang.org/issues/20020#change-105399 * Author: andrea.salicetti@gmail.com (Andrea Salicetti) * Status: Open * Priority: Normal * ruby -v: 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-darwin23] * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN ---------------------------------------- **Ruby version** : ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-darwin23] From `irb`, trying to call `match?` on this regular expression causes a segmentation falut: ```ruby irb(main):001:0> /^((a|c)|\s?){1,3}$/.match?('abc') => false irb(main):002:0> /^((a|c)|\s?){1,3}$/.match?('abc') (irb):2: [BUG] Segmentation fault at 0x000000061ba998e8 ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-darwin23] -- Crash Report log information -------------------------------------------- See Crash Report log file in one of the following locations: * ~/Library/Logs/DiagnosticReports * /Library/Logs/DiagnosticReports for more details. Don't forget to include the above Crash Report log file in bug reports. -- Control frame information ----------------------------------------------- c:0037 p:---- s:0207 e:000206 CFUNC :match? c:0036 p:0006 s:0202 e:000201 EVAL (irb):2 [FINISH] c:0035 p:---- s:0199 e:000198 CFUNC :eval c:0034 p:0020 s:0191 e:000190 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/3.2.0/irb/workspace.rb:119 c:0033 p:0153 s:0183 e:000181 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/3.2.0/irb/context.rb:502 c:0032 p:0119 s:0170 e:000169 BLOCK /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/3.2.0/irb.rb:588 c:0031 p:0024 s:0164 e:000163 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/3.2.0/irb.rb:777 c:0030 p:0007 s:0158 e:000157 BLOCK /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/3.2.0/irb.rb:567 c:0029 p:0126 s:0153 e:000152 BLOCK /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/3.2.0/irb/ruby-lex.rb:267 [FINISH] c:0028 p:---- s:0149 e:000148 CFUNC :loop c:0027 p:0005 s:0145 e:000144 BLOCK /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/3.2.0/irb/ruby-lex.rb:249 [FINISH] c:0026 p:---- s:0142 e:000141 CFUNC :catch c:0025 p:0010 s:0137 e:000136 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/3.2.0/irb/ruby-lex.rb:248 c:0024 p:0050 s:0132 E:000dd8 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/3.2.0/irb.rb:566 c:0023 p:0003 s:0127 e:000126 BLOCK /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/3.2.0/irb.rb:500 [FINISH] c:0022 p:---- s:0124 e:000123 CFUNC :catch c:0021 p:0050 s:0119 E:000d50 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/3.2.0/irb.rb:499 c:0020 p:0069 s:0113 e:000112 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/3.2.0/irb.rb:421 c:0019 p:0012 s:0107 e:000106 TOP /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/irb-1.6.2/exe/irb:11 [FINISH] c:0018 p:---- s:0104 e:000103 CFUNC :load c:0017 p:0078 s:0099 e:000098 TOP /Users/andreasalicetti/.rbenv/versions/3.2.2/bin/irb:25 [FINISH] c:0016 p:---- s:0094 e:000093 CFUNC :load c:0015 p:0064 s:0089 e:000088 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/site_ruby/3.2.0/bundler/cli/exec.rb:58 c:0014 p:0050 s:0083 e:000082 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/site_ruby/3.2.0/bundler/cli/exec.rb:23 c:0013 p:0034 s:0078 e:000077 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/site_ruby/3.2.0/bundler/cli.rb:492 c:0012 p:0054 s:0073 e:000072 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/site_ruby/3.2.0/bundler/vendor/thor/lib/thor/command.rb:28 c:0011 p:0040 s:0065 e:000064 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/site_ruby/3.2.0/bundler/vendor/thor/lib/thor/invocation.rb:127 c:0010 p:0213 s:0058 e:000057 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/site_ruby/3.2.0/bundler/vendor/thor/lib/thor.rb:527 c:0009 p:0008 s:0045 e:000044 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/site_ruby/3.2.0/bundler/cli.rb:34 c:0008 p:0044 s:0040 e:000039 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/site_ruby/3.2.0/bundler/vendor/thor/lib/thor/base.rb:584 c:0007 p:0022 s:0033 e:000032 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/site_ruby/3.2.0/bundler/cli.rb:28 c:0006 p:0042 s:0028 e:000027 BLOCK /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/bundler-2.4.22/exe/bundle:37 c:0005 p:0007 s:0022 e:000021 METHOD /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/site_ruby/3.2.0/bundler/friendly_errors.rb:117 c:0004 p:0108 s:0017 E:0019b8 TOP /Users/andreasalicetti/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/bundler-2.4.22/exe/bundle:29 [FINISH] c:0003 p:---- s:0013 e:000012 CFUNC :load c:0002 p:0081 s:0008 E:000220 EVAL /Users/andreasalicetti/.rbenv/versions/3.2.2/bin/bundle:25 [FINISH] c:0001 p:0000 s:0003 E:001980 DUMMY [FINISH] ``` Sometimes this happens the very first time I try to execute the command, some other times I have to try a couple of times to see that Segmentation Fault (but usually within the first 5 attempts). ---Files-------------------------------- ruby-2023-11-23-175410.ips (20.2 KB) -- https://bugs.ruby-lang.org/