May 2024 - ruby-core - ml.ruby-lang.org

[ruby-core:117927] [Ruby master Bug#20496] Segfault when enabling YJIT
by gettalong (Thomas Leitner) 04 Jun '24

04 Jun '24

Issue #20496 has been reported by gettalong (Thomas Leitner). ---------------------------------------- Bug #20496: Segfault when enabling YJIT https://bugs.ruby-lang.org/issues/20496 * Author: gettalong (Thomas Leitner) * Status: Open * ruby -v: ruby 3.4.0dev (2024-05-19T03:08:35Z master 7afc16aa48) [x86_64-linux] * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- I installed Ruby 3.4-dev via rbenv to see how the improvements in YJIT with 3.4-dev (after reading https://speakerdeck.com/k0kubun/rubykaigi-2024) translate to other parts of HexaPDF. However, when running the HexaPDF optimization benchmark with YJIT enabled, it regularly segfaults. This does not happen without YJIT. ## Steps to reproduce * Clone the HexaPDF repository: `git clone git@github.com:gettalong/hexapdf.git` * Download the file `a.pdf` attached to this issue into the `hexapdf` directory. * Change into the `hexapdf` directory and run `ruby --yjit -I lib bin/hexapdf -f optimize --compress-pages a.pdf out.pdf`. * The run may not fail every time but it does fail with a segfault many times. ## Segfault output ``` /tmp/hexapdf/lib/hexapdf/task/optimize.rb:289: [BUG] Segmentation fault at 0x00000000000000b0 ruby 3.4.0dev (2024-05-19T03:08:35Z master 7afc16aa48) +YJIT [x86_64-linux] -- Control frame information ----------------------------------------------- c:0024 p:0016 s:0147 e:000142 METHOD /tmp/hexapdf/lib/hexapdf/task/optimize.rb:289 c:0023 p:0042 s:0136 e:000135 BLOCK /tmp/hexapdf/lib/hexapdf/content/parser.rb:192 c:0022 p:0017 s:0132 e:000131 METHOD <internal:kernel>:191 c:0021 p:0067 s:0127 e:000126 METHOD /tmp/hexapdf/lib/hexapdf/content/parser.rb:186 c:0020 p:0016 s:0118 e:000117 METHOD /tmp/hexapdf/lib/hexapdf/content/parser.rb:166 c:0019 p:0018 s:0111 E:002198 BLOCK /tmp/hexapdf/lib/hexapdf/task/optimize.rb:241 c:0018 p:0015 s:0105 e:000104 BLOCK /tmp/hexapdf/lib/hexapdf/type/page_tree_node.rb:243 c:0017 p:0007 s:0101 e:000100 BLOCK /tmp/hexapdf/lib/hexapdf/pdf_array.rb:183 [FINISH] c:0016 p:---- s:0097 e:000096 CFUNC :each_index c:0015 p:0018 s:0093 e:000092 METHOD /tmp/hexapdf/lib/hexapdf/pdf_array.rb:183 c:0014 p:0020 s:0089 e:000088 METHOD /tmp/hexapdf/lib/hexapdf/type/page_tree_node.rb:241 c:0013 p:0013 s:0084 e:000083 METHOD /tmp/hexapdf/lib/hexapdf/document/pages.rb:178 c:0012 p:0011 s:0079 E:0015a0 METHOD /tmp/hexapdf/lib/hexapdf/task/optimize.rb:236 c:0011 p:0009 s:0073 e:000072 METHOD /tmp/hexapdf/lib/hexapdf/task/optimize.rb:87 c:0010 p:0024 s:0061 e:000060 METHOD /tmp/hexapdf/lib/hexapdf/document.rb:570 c:0009 p:0031 s:0053 e:000052 METHOD /tmp/hexapdf/lib/hexapdf/cli/command.rb:276 c:0008 p:0011 s:0048 e:000047 BLOCK /tmp/hexapdf/lib/hexapdf/cli/optimize.rb:76 c:0007 p:0059 s:0044 e:000043 METHOD /tmp/hexapdf/lib/hexapdf/cli/command.rb:101 c:0006 p:0017 s:0033 e:000032 METHOD /tmp/hexapdf/lib/hexapdf/cli/optimize.rb:74 c:0005 p:0288 s:0027 e:000026 METHOD /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/gems/3.4.0+0/gems/cmdparse-3.0.7/lib/cmdparse.rb:889 c:0004 p:0023 s:0017 e:000016 METHOD /tmp/hexapdf/lib/hexapdf/cli.rb:146 c:0003 p:0012 s:0012 e:000011 METHOD /tmp/hexapdf/lib/hexapdf/cli.rb:63 c:0002 p:0010 s:0006 e:000005 EVAL bin/hexapdf:6 [FINISH] c:0001 p:0000 s:0003 E:000590 DUMMY [FINISH] -- Ruby level backtrace information ---------------------------------------- bin/hexapdf:6:in '<main>' /tmp/hexapdf/lib/hexapdf/cli.rb:63:in 'run' /tmp/hexapdf/lib/hexapdf/cli.rb:146:in 'parse' /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/gems/3.4.0+0/gems/cmdparse-3.0.7/lib/cmdparse.rb:889:in 'parse' /tmp/hexapdf/lib/hexapdf/cli/optimize.rb:74:in 'execute' /tmp/hexapdf/lib/hexapdf/cli/command.rb:101:in 'with_document' /tmp/hexapdf/lib/hexapdf/cli/optimize.rb:76:in 'block in execute' /tmp/hexapdf/lib/hexapdf/cli/command.rb:276:in 'apply_optimization_options' /tmp/hexapdf/lib/hexapdf/document.rb:570:in 'task' /tmp/hexapdf/lib/hexapdf/task/optimize.rb:87:in 'call' /tmp/hexapdf/lib/hexapdf/task/optimize.rb:236:in 'compress_pages' /tmp/hexapdf/lib/hexapdf/document/pages.rb:178:in 'each' /tmp/hexapdf/lib/hexapdf/type/page_tree_node.rb:241:in 'each_page' /tmp/hexapdf/lib/hexapdf/pdf_array.rb:183:in 'each' /tmp/hexapdf/lib/hexapdf/pdf_array.rb:183:in 'each_index' /tmp/hexapdf/lib/hexapdf/pdf_array.rb:183:in 'block in each' /tmp/hexapdf/lib/hexapdf/type/page_tree_node.rb:243:in 'block in each_page' /tmp/hexapdf/lib/hexapdf/task/optimize.rb:241:in 'block in compress_pages' /tmp/hexapdf/lib/hexapdf/content/parser.rb:166:in 'parse' /tmp/hexapdf/lib/hexapdf/content/parser.rb:186:in 'parse' <internal:kernel>:191:in 'loop' /tmp/hexapdf/lib/hexapdf/content/parser.rb:192:in 'block in parse' /tmp/hexapdf/lib/hexapdf/task/optimize.rb:289:in 'process' -- Threading information --------------------------------------------------- Total ractor count: 1 Ruby thread count for this ractor: 1 -- Machine register context ------------------------------------------------ RIP: 0x00005bc7f596320d RBP: 0x00005bc7f535cd18 RSP: 0x00007ffeb64795a0 RAX: 0x00000000000000b0 RBX: 0x00007b47a9eff4a8 RCX: 0x00005bc7f5315ee0 RDX: 0x0000000000000000 RDI: 0x0000000000000000 RSI: 0x0000000000000007 R8: 0x00007b478e8c56a8 R9: 0x00007b478e8934c8 R10: 0x64d5ad93872fbbfd R11: 0x00005bc7f3b57f50 R12: 0x00005bc7f5270470 R13: 0x00007b47a9ffead0 R14: 0x00005bc7f535cd28 R15: 0x00007b47a9ffeb40 EFL: 0x0000000000010202 -- C level backtrace information ------------------------------------------- /home/thomas/.rbenv/versions/3.4-dev/bin/ruby(rb_print_backtrace+0x14) [0x5bc7f38c2b13] /tmp/ruby-build.20240519133220.779813.9OK1gU/ruby-master/vm_dump.c:820 /home/thomas/.rbenv/versions/3.4-dev/bin/ruby(rb_vm_bugreport) /tmp/ruby-build.20240519133220.779813.9OK1gU/ruby-master/vm_dump.c:1151 /home/thomas/.rbenv/versions/3.4-dev/bin/ruby(rb_bug_for_fatal_signal+0xfc) [0x5bc7f3a7796c] /tmp/ruby-build.20240519133220.779813.9OK1gU/ruby-master/error.c:1108 /home/thomas/.rbenv/versions/3.4-dev/bin/ruby(sigsegv+0x46) [0x5bc7f3806916] /tmp/ruby-build.20240519133220.779813.9OK1gU/ruby-master/signal.c:929 /lib/x86_64-linux-gnu/libc.so.6(0x7b47aa645320) [0x7b47aa645320] [0x5bc7f596320d] -- Other runtime information ----------------------------------------------- * Loaded script: bin/hexapdf * Loaded features: 0 enumerator.so 1 thread.rb 2 fiber.so 3 rational.so 4 complex.so 5 ruby2_keywords.rb 6 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/x86_64-linux/enc/encdb.so 7 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/x86_64-linux/enc/trans/transdb.so 8 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/x86_64-linux/rbconfig.rb 9 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/compatibility.rb 10 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/defaults.rb 11 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/deprecate.rb 12 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/errors.rb 13 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/unknown_command_spell_checker.rb 14 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/exceptions.rb 15 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/basic_specification.rb 16 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/stub_specification.rb 17 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/platform.rb 18 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/specification_record.rb 19 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/util/list.rb 20 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/version.rb 21 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/requirement.rb 22 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/specification.rb 23 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/util.rb 24 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/dependency.rb 25 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/core_ext/kernel_gem.rb 26 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/x86_64-linux/monitor.so 27 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/monitor.rb 28 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems.rb 29 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/bundled_gems.rb 30 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/rubygems/path_support.rb 31 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/error_highlight/version.rb 32 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/error_highlight/base.rb 33 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/error_highlight/formatter.rb 34 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/error_highlight/core_ext.rb 35 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/error_highlight.rb 36 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/version.rb 37 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/core_ext/name_error.rb 38 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/levenshtein.rb 39 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/jaro_winkler.rb 40 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/spell_checker.rb 41 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/spell_checkers/name_error_checkers/class_name_checker.rb 42 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/spell_checkers/name_error_checkers/variable_name_checker.rb 43 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/spell_checkers/name_error_checkers.rb 44 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/spell_checkers/method_name_checker.rb 45 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/spell_checkers/key_error_checker.rb 46 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/spell_checkers/null_checker.rb 47 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/tree_spell_checker.rb 48 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/spell_checkers/require_path_checker.rb 49 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/spell_checkers/pattern_key_name_checker.rb 50 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean/formatter.rb 51 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/did_you_mean.rb 52 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/syntax_suggest/core_ext.rb 53 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/optparse.rb 54 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/gems/3.4.0+0/gems/cmdparse-3.0.7/lib/cmdparse.rb 55 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/x86_64-linux/io/console.so 56 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/ostruct.rb 57 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/x86_64-linux/stringio.so 58 /tmp/hexapdf/lib/hexapdf/error.rb 59 /tmp/hexapdf/lib/hexapdf/data_dir.rb 60 /tmp/hexapdf/lib/hexapdf/content.rb 61 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/set.rb 62 /tmp/hexapdf/lib/hexapdf/font/invalid_glyph.rb 63 /tmp/hexapdf/lib/hexapdf/configuration.rb 64 /tmp/hexapdf/lib/hexapdf/reference.rb 65 /tmp/hexapdf/lib/hexapdf/object.rb 66 /tmp/hexapdf/lib/hexapdf/pdf_array.rb 67 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/x86_64-linux/date_core.so 68 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/date.rb 69 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/time.rb 70 /tmp/hexapdf/lib/hexapdf/rectangle.rb 71 /tmp/hexapdf/lib/hexapdf/utils/pdf_doc_encoding.rb 72 /tmp/hexapdf/lib/hexapdf/dictionary_fields.rb 73 /tmp/hexapdf/lib/hexapdf/dictionary.rb 74 /tmp/hexapdf/lib/hexapdf/filter.rb 75 /tmp/hexapdf/lib/hexapdf/stream.rb 76 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/x86_64-linux/strscan.so 77 /tmp/hexapdf/lib/hexapdf/tokenizer.rb 78 /tmp/hexapdf/lib/hexapdf/utils/object_hash.rb 79 /tmp/hexapdf/lib/hexapdf/xref_section.rb 80 /tmp/hexapdf/lib/hexapdf/parser.rb 81 /tmp/hexapdf/lib/hexapdf/revision.rb 82 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/digest/version.rb 83 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/x86_64-linux/digest.so 84 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/digest/loader.rb 85 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/digest.rb 86 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/x86_64-linux/digest/md5.so 87 /tmp/hexapdf/lib/hexapdf/type/trailer.rb 88 /tmp/hexapdf/lib/hexapdf/revisions.rb 89 /tmp/hexapdf/lib/hexapdf/type/actions.rb 90 /tmp/hexapdf/lib/hexapdf/type/annotations.rb 91 /tmp/hexapdf/lib/hexapdf/type.rb 92 /tmp/hexapdf/lib/hexapdf/task.rb 93 /tmp/hexapdf/lib/hexapdf/encryption.rb 94 /tmp/hexapdf/lib/hexapdf/utils/lru_cache.rb 95 /tmp/hexapdf/lib/hexapdf/serializer.rb 96 /tmp/hexapdf/lib/hexapdf/version.rb 97 /tmp/hexapdf/lib/hexapdf/writer.rb 98 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/delegate.rb 99 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/weakref.rb 100 /tmp/hexapdf/lib/hexapdf/importer.rb 101 /tmp/hexapdf/lib/hexapdf/image_loader.rb 102 /tmp/hexapdf/lib/hexapdf/font_loader.rb 103 /tmp/hexapdf/lib/hexapdf/layout.rb 104 /tmp/hexapdf/lib/hexapdf/digital_signature.rb 105 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/gems/3.4.0+0/gems/geom2d-0.4.1/lib/geom2d/utils.rb 106 /tmp/hexapdf/lib/hexapdf/utils.rb 107 /tmp/hexapdf/lib/hexapdf/document.rb 108 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/tmp/hexapdf/lib/hexapdf/cli/fonts.rb 130 /tmp/hexapdf/lib/hexapdf/cli/usage.rb 131 /tmp/hexapdf/lib/hexapdf/cli.rb 132 /tmp/hexapdf/lib/hexapdf/encryption/security_handler.rb 133 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/x86_64-linux/digest/sha2.so 134 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/digest/sha2/loader.rb 135 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/digest/sha2.rb 136 /tmp/hexapdf/lib/hexapdf/encryption/standard_security_handler.rb 137 /tmp/hexapdf/lib/hexapdf/type/page_tree_node.rb 138 /tmp/hexapdf/lib/hexapdf/document/pages.rb 139 /tmp/hexapdf/lib/hexapdf/utils/sorted_tree_node.rb 140 /tmp/hexapdf/lib/hexapdf/number_tree_node.rb 141 /tmp/hexapdf/lib/hexapdf/type/catalog.rb 142 /tmp/hexapdf/lib/hexapdf/type/page.rb 143 /tmp/hexapdf/lib/hexapdf/type/resources.rb 144 /tmp/hexapdf/lib/hexapdf/font/cmap.rb 145 /tmp/hexapdf/lib/hexapdf/type/font.rb 146 /tmp/hexapdf/lib/hexapdf/font/encoding.rb 147 /tmp/hexapdf/lib/hexapdf/type/font_simple.rb 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/home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/x86_64-linux/enc/encdb.so 7b47aaa78000-7b47aaa79000 rw-p 00003000 fc:01 27824254 /home/thomas/.rbenv/versions/3.4-dev/lib/ruby/3.4.0+0/x86_64-linux/enc/encdb.so 7b47aaa79000-7b47aaa80000 r--s 00000000 fc:01 19160541 /usr/lib/x86_64-linux-gnu/gconv/gconv-modules.cache 7b47aaa80000-7b47aaa90000 rw-p 00000000 00:00 0 7b47aaa91000-7b47aaa93000 rw-p 00000000 00:00 0 7b47aaa93000-7b47aaa94000 r--p 00000000 fc:01 19160549 /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 7b47aaa94000-7b47aaabf000 r-xp 00001000 fc:01 19160549 /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 7b47aaabf000-7b47aaac9000 r--p 0002c000 fc:01 19160549 /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 7b47aaac9000-7b47aaacb000 r--p 00036000 fc:01 19160549 /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 7b47aaacb000-7b47aaacd000 rw-p 00038000 fc:01 19160549 /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 7ffeb5c7e000-7ffeb647d000 rw-p 00000000 00:00 0 [stack] 7ffeb65b1000-7ffeb65b5000 r--p 00000000 00:00 0 [vvar] 7ffeb65b5000-7ffeb65b7000 r-xp 00000000 00:00 0 [vdso] ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall] ``` ---Files-------------------------------- a.pdf (51.8 KB) -- https://bugs.ruby-lang.org/

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[ruby-core:117572] [Ruby master Misc#20435] DevMeeting-2024-06-13
by mame (Yusuke Endoh) 04 Jun '24

04 Jun '24

Issue #20435 has been reported by mame (Yusuke Endoh). ---------------------------------------- Misc #20435: DevMeeting-2024-06-13 https://bugs.ruby-lang.org/issues/20435 * Author: mame (Yusuke Endoh) * Status: Open ---------------------------------------- # The next dev meeting **Date: 2024/06/13 13:00-17:00** (JST) Log: *TBD* - Dev meeting *IS NOT* a decision-making place. All decisions should be done at the bug tracker. - Dev meeting is a place we can ask Matz, nobu, nurse and other developers directly. - Matz is a very busy person. Take this opportunity to ask him. If you can not attend, other attendees can ask instead of you (if attendees can understand your issue). - We will write a record of the discussion in the file or to each ticket in English. - All activities are best-effort (keep in mind that most of us are volunteer developers). - The date, time and place of the meeting are scheduled according to when/where we can reserve Matz's time. - *DO NOT* discuss then on this ticket, please. # Call for agenda items If you have a ticket that you want matz and committers to discuss, please post it into this ticket in the following format: ``` * [Ticket ref] Ticket title (your name) * Comment (A summary of the ticket, why you put this ticket here, what point should be discussed, etc.) ``` Example: ``` * [Feature #14609] `Kernel#p` without args shows the receiver (ko1) * I feel this feature is very useful and some people say :+1: so let discuss this feature. ``` - It is recommended to add a comment by 2024/06/10. We hold a preparatory meeting to create an agenda a few days before the dev-meeting. - The format is strict. We'll use [this script to automatically create an markdown-style agenda](https://gist.github.com/mame/b0390509ce1491b43610b9ebb665eb86). We may ignore a comment that does not follow the format. - Your comment is mandatory. We cannot read all discussion of the ticket in a limited time. We appreciate it if you could write a short summary and update from a previous discussion. -- https://bugs.ruby-lang.org/

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[ruby-core:117288] [Ruby master Misc#20387] Meta-ticket for ASAN support
by kjtsanaktsidis (KJ Tsanaktsidis) 02 Jun '24

02 Jun '24

Issue #20387 has been reported by kjtsanaktsidis (KJ Tsanaktsidis). ---------------------------------------- Misc #20387: Meta-ticket for ASAN support https://bugs.ruby-lang.org/issues/20387 * Author: kjtsanaktsidis (KJ Tsanaktsidis) * Status: Open * Assignee: kjtsanaktsidis (KJ Tsanaktsidis) ---------------------------------------- I was asked to provide a bit of information about the current status of ASAN in CRuby, so I thought I'd open this meta-ticket to track all of the work I've been performing on fixing up address sanitizer support. So far, I have fixed the following issues related to ASAN support: * https://bugs.ruby-lang.org/issues/20001 + https://github.com/ruby/ruby/pull/9505, which dealt with two main themes: - Pushing the logic for capturing the start of the machine stack much closer to the top of the call stack, so that VALUEs stored close to the top of the machine stack get marked properly - Marking VALUEs stored on ASAN fake stacks during machine stack marking * https://bugs.ruby-lang.org/issues/20220 + https://github.com/ruby/ruby/pull/9734, which made M:N threading notify ASAN about stack switches in the same way that fibers do - Note: ASAN still doesn't work with M:N threading, but that actually has nothing to do with ASAN; it's because the most recent versions of Clang which are needed for ASAN just don't work with M:N threading either. See https://bugs.ruby-lang.org/issues/20243 for more info about that. * https://bugs.ruby-lang.org/issues/20273 + https://github.com/ruby/ruby/pull/10012, which disables `callcc` (and the associated tests) when ASAN is enabled - callcc is very rarely used in real code and the way it works is just fundamentally incompatible with ASAN (it performs longjmp's which I think are technically undefined behaviour) * https://bugs.ruby-lang.org/issues/20221 + https://github.com/ruby/ruby/pull/9865, which ignore some global symbols that ASAN defines from the global symbol leak checker * https://bugs.ruby-lang.org/issues/20274 + https://github.com/ruby/ruby/pull/10087, which ignores some false positive tests about memory leaks when ASAN is enabl * I updated the ASAN docs in https://github.com/ruby/ruby/pull/9922 to more closely reflect current reality The current state of things is that, by following the instructions in https://github.com/ruby/ruby/blob/master/doc/contributing/building_ruby.md, you can successfully build Ruby with ASAN enabled, however, the test suite has several failures. I'm currently working on addressing these: The next step is to merge https://github.com/ruby/ruby/pull/10122 (https://bugs.ruby-lang.org/issues/20310) which I plan to do next week (I'm currently away on a work trip). That makes sure that VALUEs stored in ASAN fake stacks from threads other than the currently running thread get marked during GC. After that, I need to push up patches for the remaining few issues. I mostly have these patches ready to go already; in fact, last week I got the full `make check` suite passing all tests with ASAN enabled! Once that's working, I'd like to investigate how ASAN can fit into CRuby's CI matrix somewhere so that it _stays_ working, although I have not thought too deeply about this yet. I will provide further updates on this ticket so anybody interested can stay in the loop. -- https://bugs.ruby-lang.org/

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[ruby-core:117727] [Ruby master Bug#20459] Ractor.select() deadlock?
by esad (Esad Hajdarevic) 01 Jun '24

01 Jun '24

Issue #20459 has been reported by esad (Esad Hajdarevic). ---------------------------------------- Bug #20459: Ractor.select() deadlock? https://bugs.ruby-lang.org/issues/20459 * Author: esad (Esad Hajdarevic) * Status: Open * ruby -v: ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [arm64-darwin20] * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- When I run this script ``` echo = Ractor.new { Ractor.receive } Thread.new { puts Ractor.select(echo).inspect } sleep 0.1 echo.send "test" ``` the script never terminates. If I change thread body to ``` Thread.new { puts echo.take.inspect } ``` or introduce a small delay before #select like: ``` Thread.new { sleep 1; puts Ractor.select(echo).inspect } ``` then it works/terminates. -- https://bugs.ruby-lang.org/

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[ruby-core:117674] [Ruby master Bug#20450] Ruby 3.1.1 broken with bootsnap
by philippe.bs.noel＠tutanota.com (Philippe Noel) 31 May '24

31 May '24

Issue #20450 has been reported by philippe.bs.noel(a)tutanota.com (Philippe Noel). ---------------------------------------- Bug #20450: Ruby 3.1.1 broken with bootsnap https://bugs.ruby-lang.org/issues/20450 * Author: philippe.bs.noel(a)tutanota.com (Philippe Noel) * Status: Open * ruby -v: ruby 3.3.1 (2024-04-23 revision c56cd86388) [x86_64-linux] * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- The issue looks like https://bugs.ruby-lang.org/issues/20060 With the new release of ruby 3.1.1, bootsnap does not work anymore. ``` bin/rails aborted! ArgumentError: comparison of String with nil failed (ArgumentError) msg = " #{RUBY_VERSION < SINCE[gem] ? "will no longer be" : "is not"} part of the default gems since Ruby #{SINCE[gem]}." ^^^^^^^^^^ /usr/local/bundle/gems/bootsnap-1.18.3/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require' ``` It's working with DISABLE_BOOTSNAP=1 with the following message : `warning: parser/current is loading parser/ruby33, which recognizes 3.3.0-compliant syntax, but you are running 3.3.1.` -- https://bugs.ruby-lang.org/

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[ruby-core:118090] [Ruby master Bug#20513] the feature of kwargs in index methods has been removed without due consideration of utility and compatibility
by bughit (bug hit) 30 May '24

30 May '24

Issue #20513 has been reported by bughit (bug hit). ---------------------------------------- Bug #20513: the feature of kwargs in index methods has been removed without due consideration of utility and compatibility https://bugs.ruby-lang.org/issues/20513 * Author: bughit (bug hit) * Status: Open * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- See #20218 The ability to pass kwargs to index methods has been in ruby for a long time, probably from the inception of kwargs, so there's code that makes use of it. Other than the multiple assignment edge-case it's been working fine and is not conceptually unsound. kwargs allow for more variability in store/lookup operations via index methods, letting you control where/how something is stored/looked up. this is from 2.6 ```ruby module IndexTest @store = {} def self.store @store end def self.key(name, namespace: nil) name = "#{namespace}:#{name}" if namespace name end def self.[](name, namespace: nil) p [name, namespace] @store[key(name, namespace: namespace)] end def self.[]=(name, opts = {}, val) p [name, opts, val] @store[key(name, namespace: opts[:namespace])] = val end end IndexTest['foo'] = 1 p IndexTest['foo'] IndexTest['foo', namespace: 'bar'] = 2 p IndexTest['foo', namespace: 'bar'] p IndexTest.store ``` A reasonable breaking change would be for `[]=` to have real kwargs, rather than the middle positional kwarg collector hash in the above example. I am not arguing that breaking changes can't be introduced, but that a removal of a long-standing feature deserves more consideration and deliberation than the following: > I found that use of keyword arguments in multiple assignment is broken > Can we also prohibit keyword arguments ... ? > OK, prohibit keyword arguments -- https://bugs.ruby-lang.org/

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[ruby-core:117660] [Ruby master Bug#20449] Ripper issue in field production on Ruby 3.1.5
by kddnewton (Kevin Newton) 30 May '24

30 May '24

Issue #20449 has been reported by kddnewton (Kevin Newton). ---------------------------------------- Bug #20449: Ripper issue in field production on Ruby 3.1.5 https://bugs.ruby-lang.org/issues/20449 * Author: kddnewton (Kevin Newton) * Status: Open * ruby -v: 3.1.5 * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- ```ruby Ripper.sexp("foo::bar = baz") # => [:program, [[:assign, [:field, [:vcall, [:@ident, "foo", [1, 0]]], 73, [:@ident, "bar", [1, 5]]], [:vcall, [:@ident, "baz", [1, 11]]]]]] ``` Note that 73 there. That's either `:"::"` or `[:@op, "::", [lineno, column]]` in every other version of Ruby that I could find. I assume this is a backport issue. -- https://bugs.ruby-lang.org/

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[ruby-core:115923] [Ruby master Bug#20094] Inline while loop behavior changed unexpectedly in 3.3.0
by sisyphus_cg (Sisyphus CG) 30 May '24

30 May '24

Issue #20094 has been reported by sisyphus_cg (Sisyphus CG). ---------------------------------------- Bug #20094: Inline while loop behavior changed unexpectedly in 3.3.0 https://bugs.ruby-lang.org/issues/20094 * Author: sisyphus_cg (Sisyphus CG) * Status: Open * Priority: Normal * ruby -v: 3.3.0 * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- The behavior of the inline while loop has changed in 3.3.0. This unexpectedly broke my code and I couldn't find anything in the changelog about it so reporting it as a bug. In ruby <= 3.2: ``` ruby (p 1) while false # nothing (p 1; p 2) while false # nothing ``` In ruby 3.3: ``` ruby (p 1) while false # 1 (p 1; p 2) while false # 1 2 ``` Essentially, if the left hand side looks like a statement, now it is treated as a do-while loop. In ruby 3.2 and less this only happened with explicit use of `begin` and `end`. -- https://bugs.ruby-lang.org/

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[ruby-core:117970] [Ruby master Bug#20502] Backport pthread_kill fix to Ruby 3.3
by jeremyevans0 (Jeremy Evans) 30 May '24

30 May '24

Issue #20502 has been reported by jeremyevans0 (Jeremy Evans). ---------------------------------------- Bug #20502: Backport pthread_kill fix to Ruby 3.3 https://bugs.ruby-lang.org/issues/20502 * Author: jeremyevans0 (Jeremy Evans) * Status: Closed * ruby -v: ruby 3.3.1 (2024-04-23 revision c56cd86388) [x86_64-openbsd] * Backport: 3.1: DONTNEED, 3.2: DONTNEED, 3.3: REQUIRED ---------------------------------------- commit:ef3803ed4028810f9088019f0db1a366370ab53a should be backported to Ruby 3.3. I've now seen this bug affect multiple cases. On OpenBSD, there are test failures in by (https://github.com/jeremyevans/by) on Ruby 3.3.1, but not Ruby 3.4.0-preview1 (which includes the commit to backport). -- https://bugs.ruby-lang.org/

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[ruby-core:117652] [Ruby master Bug#20445] Backport 2571d5376a38c333b8fe85f1f9b2f9c2422c0ad9 to ruby_3_3
by mame (Yusuke Endoh) 29 May '24

29 May '24

Issue #20445 has been reported by mame (Yusuke Endoh). ---------------------------------------- Bug #20445: Backport 2571d5376a38c333b8fe85f1f9b2f9c2422c0ad9 to ruby_3_3 https://bugs.ruby-lang.org/issues/20445 * Author: mame (Yusuke Endoh) * Status: Closed * ruby -v: ruby 3.3.1 (2024-04-23 revision c56cd86388) [x86_64-linux] * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: REQUIRED ---------------------------------------- Building Ruby 3.3.1 prints the following warning: ``` regexec.c: In function 'match_at': regexec.c:2598:59: warning: 'stkp' may be used uninitialized [-Wmaybe-uninitialized] 2598 | if (*pbegin == OP_REPEAT_INC) stkp->u.repeat.count--;\ | ~~~~~~~~~~~~~~~~~~~~^~ regexec.c:3852:11: note: in expansion of macro 'CHECK_MATCH_CACHE' 3852 | CHECK_MATCH_CACHE; | ^~~~~~~~~~~~~~~~~ regexec.c:2297:18: note: 'stkp' was declared here 2297 | OnigStackType *stkp; /* used as any purpose. */ | ^~~~ ``` 2571d5376a38c333b8fe85f1f9b2f9c2422c0ad9 will remove it. -- https://bugs.ruby-lang.org/

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