November 2023 - ruby-core - ml.ruby-lang.org

[ruby-core:115367] [Ruby master Bug#7968] Poor UDPSocket#send performance in ruby 2.0.0 on windows
by JesseJohnson (Jesse Johnson) 13 Nov '23

13 Nov '23

Issue #7968 has been updated by JesseJohnson (Jesse Johnson). Can anyone replicate this on Ruby 3 or later? ---------------------------------------- Bug #7968: Poor UDPSocket#send performance in ruby 2.0.0 on windows https://bugs.ruby-lang.org/issues/7968#change-105296 * Author: cs96and (Alan Davies) * Status: Assigned * Priority: Normal * Assignee: windows * ruby -v: ruby 2.0.0p0 (2013-02-24) [x64-mingw32] ---------------------------------------- I have noticed that the performance of UDPSocket#send on ruby 2.0.0 on windows is much poorer than that of 1.9.3 or 1.8.7. Running the attahced script on 2.0.0 gives the following... d:\scripts>bash -c "ruby --version" ruby 2.0.0p0 (2013-02-24) [x64-mingw32] d:\scripts>bash -c "time ruby socketsendtest.rb" real 0m2.572s user 0m0.000s sys 0m0.016s However, running the same test with 1.9.3 is much faster... d:\scripts>pik 193 d:\scripts>bash -c "ruby --version" ruby 1.9.3p374 (2013-01-15) [i386-mingw32] d:\scripts>bash -c "time ruby socketsendtest.rb" real 0m0.993s user 0m0.015s sys 0m0.016s Additionally, if I change the send call to a print (commented out in the script), then the performance is fine on 2.0.0.... d:\scripts>pik 200 d:\scripts>bash -c "ruby --version" ruby 2.0.0p0 (2013-02-24) [x64-mingw32] d:\scripts>bash -c "time ruby socketsendtest.rb" real 0m0.907s user 0m0.000s sys 0m0.015s What is send() doing that print() doesn't do that is causing the massive performance drop? Thanks Alan. ---Files-------------------------------- socketsendtest.rb (266 Bytes) -- https://bugs.ruby-lang.org/

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[ruby-core:115366] [Ruby master Bug#7964] Writing an ASCII-8BIT String to a StringIO created from a UTF-8 String
by madeline-hou (Madeline Hou) 13 Nov '23

13 Nov '23

Issue #7964 has been updated by madeline-hou (Madeline Hou). @naruse (Yui NARUSE) Like you said, the example comparisons aren't equal. I saw that the Feature #5677 that your linked to in your comment was rejected, would it be alright to close this issue? ---------------------------------------- Bug #7964: Writing an ASCII-8BIT String to a StringIO created from a UTF-8 String https://bugs.ruby-lang.org/issues/7964#change-105295 * Author: brixen (Brian Shirai) * Status: Assigned * Priority: Normal * Assignee: nobu (Nobuyoshi Nakada) * ruby -v: ruby 2.0.0p0 (2013-02-24 revision 39474) [x86_64-darwin10.8.0] ---------------------------------------- =begin In the following script, an ASCII-8BIT String is written to a StringIO created with a UTF-8 String without error. However, a << b or a + b will raise an exception, as will writing an ASCII-8BIT String to a File with UTF-8 external encoding. + $ cat file_enc.rb # encoding: utf-8 require 'stringio' a = "On a very cold morning, it was -8°F." b = a.dup.force_encoding "ascii-8bit" io = StringIO.new a io.write(b) p io.string.encoding File.open "data.txt", "w:utf-8" do |f| f.write a f.write b end + $ ruby2.0 -v file_enc.rb ruby 2.0.0p0 (2013-02-24 revision 39474) [x86_64-darwin10.8.0] #<Encoding:UTF-8> file_enc.rb:13:in `write': "\xC2" from ASCII-8BIT to UTF-8 (Encoding::UndefinedConversionError) from file_enc.rb:13:in `block in <main>' from file_enc.rb:11:in `open' from file_enc.rb:11:in `<main>' + $ ruby1.9.3 -v file_enc.rb ruby 1.9.3p327 (2012-11-10 revision 37606) [x86_64-darwin10.8.0] #<Encoding:UTF-8> file_enc.rb:13:in `write': "\xC2" from ASCII-8BIT to UTF-8 (Encoding::UndefinedConversionError) from file_enc.rb:13:in `block in <main>' from file_enc.rb:11:in `open' from file_enc.rb:11:in `<main>' =end -- https://bugs.ruby-lang.org/

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[ruby-core:115365] [Ruby master Bug#8299] Minor error in float parsing
by JesseJohnson (Jesse Johnson) 13 Nov '23

13 Nov '23

Issue #8299 has been updated by JesseJohnson (Jesse Johnson). I'm not able to replicate this in Ruby 2.6 or Ruby 3.2. Has this been fixed in the relevant compilers? If so can this bug be closed? ``` irb(main):001:0> RUBY_VERSION => "2.6.10" irb(main):002:0> -1.1505945E-5 => -1.1505945e-05 ``` ``` irb(main):001> RUBY_VERSION => "3.2.2" irb(main):002> -1.1505945E-5 => -1.1505945e-05 ``` ---------------------------------------- Bug #8299: Minor error in float parsing https://bugs.ruby-lang.org/issues/8299#change-105294 * Author: bobjalex (Bob Alexander) * Status: Assigned * Priority: Normal * Assignee: nobu (Nobuyoshi Nakada) * ruby -v: trunk ---------------------------------------- I encountered a float that either parses [slightly] differently (or converts to string differently) in Ruby than it does in Python or Java. This looks like a Ruby bug since the result "looks" incorrect. It is easily reproduced by entering the magic number (-1.1505945E-5) into irb. It behaves the same in 2.0 and 1.9. I'm using Windows. Below is an irb session that demonstrates. Also included are JRuby and Python trials that show better behavior. This issue is not causing me any problems, but just in case someone there is interested in looking into it... Bob >ruby -v ruby 2.0.0p0 (2013-02-24) [i386-mingw32] >irb irb(main):001:0> RUBY_VERSION => "2.0.0" irb(main):002:0> -1.1505945E-5 => -1.1505945000000001e-05 >ruby19 -v ruby 1.9.3p392 (2013-02-22) [i386-mingw32] >irb19 irb(main):001:0> RUBY_VERSION => "1.9.3" irb(main):002:0> -1.1505945E-5 => -1.1505945000000001e-05 irb(main):002:0> >jirb irb(main):001:0> -1.1505945E-5 => -1.1505945e-05 >python Python 2.7.4rc1 (default, Mar 24 2013, 14:34:32) [MSC v.1500 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> -1.1505945E-5 -1.1505945e-05 >>> repr(-1.1505945E-5) '-1.1505945e-05' -- https://bugs.ruby-lang.org/

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[ruby-core:115364] [Ruby master Bug#11514] AIX6.1 - Ruby 2.2.3 - Segmentation fault in :byteslice
by jarrodreyesdev (Jarrod Reyes) 13 Nov '23

13 Nov '23

Issue #11514 has been updated by jarrodreyesdev (Jarrod Reyes). AIX6.1 is deprecated: https://www.ibm.com/support/pages/tlsp-doc-number3035-support-lifecycle-not… Ruby 2.2 is end of life: https://www.ruby-lang.org/en/downloads/branches/ ---------------------------------------- Bug #11514: AIX6.1 - Ruby 2.2.3 - Segmentation fault in :byteslice https://bugs.ruby-lang.org/issues/11514#change-105293 * Author: TRex58 (Tony Reix) * Status: Open * Priority: Normal * ruby -v: ?? ruby 2.1.1p76 (2014-02-24 revision 45161) [powerpc-aix6.1.0.0] ---------------------------------------- Testing Ruby 2.2.3 on AIX6.1 built with xlc (same with gcc) leads to a reproducible crash. See complete trace in attached file. Ruby version is: RUBY_PROGRAM_VERSION=2.2.3 . ~~~ # gmake V=1 test-all ... objcopy -w -L 'Init_*' -L '*_threadptr_*' libruby.so.2.2.0 : /usr/vac/bin/xlc_r -g -qinfo=por -L. -bE:ruby.imp -brtl -blibpath:NONE/lib:/usr/lib:/lib main.o -L/usr/local/lib -lruby -lpthread -lgmp -ldl -lcrypt -lm -o ruby : gmake[2]: Leaving directory `/opt/freeware/src/packages/BUILD/ruby-2.2.3' gmake[1]: Leaving directory `/opt/freeware/src/packages/BUILD/ruby-2.2.3' Generating RDoc documentation ./miniruby -I./lib -I. -I.ext/common ./tool/runruby.rb --extout=.ext -- --disable-gems "./bin/rdoc" --root "." --page-dir "./doc" --encoding=UTF-8 --no-force-update --all --ri --op ".ext/rdoc" --debug "." Parsing sources... 100% [967/967] vsnprintf.c Generating RI format into /opt/freeware/src/packages/BUILD/ruby-2.2.3/.ext/rdoc... BEFORE @generator.generate in lib/rdoc/rdoc.rb /opt/freeware/src/packages/BUILD/ruby-2.2.3/lib/rdoc/markup/parser.rb:331: [BUG] **Segmentation fault** at 0x000004 ruby 2.2.3p173 (2015-08-18 revision 51636) [powerpc-aix6.1.9.0] -- Control frame information ----------------------------------------------- c:0025 p:---- s:0126 e:000125 CFUNC **:byteslice** c:0024 p:0019 s:0121 e:000120 METHOD /opt/freeware/src/packages/BUILD/ruby-2.2.3/lib/rdoc/markup/parser.rb:331 c:0023 p:0009 s:0116 e:000115 METHOD /opt/freeware/src/packages/BUILD/ruby-2.2.3/lib/rdoc/markup/parser.rb:547 c:0022 p:0438 s:0111 e:000108 METHOD /opt/freeware/src/packages/BUILD/ruby-2.2.3/lib/rdoc/markup/parser.rb:501 c:0021 p:0017 s:0099 e:000098 METHOD /opt/freeware/src/packages/BUILD/ruby-2.2.3/lib/rdoc/markup/parser.rb:62 c:0020 p:0019 s:0093 e:000092 METHOD /opt/freeware/src/packages/BUILD/ruby-2.2.3/lib/rdoc/markup.rb:748 ... gmake: *** [rdoc] IOT/Abort trap (core dumped) # ll ./.ext/rdoc/core -rw------- 1 root system 269015892 Sep 8 14:08 ./.ext/rdoc/core # dbx ./ruby ./.ext/rdoc/core IOT/Abort trap in pthread_kill at 0xd051ceb4 ($t1) 0xd051ceb4 (pthread_kill+0xb4) 80410014 lwz r2,0x14(r1) (dbx) where pthread_kill(??, ??) at 0xd051ceb4 _p_raise(??) at 0xd051c2e8 raise.raise(??) at 0xd011f8a0 abort() at 0xd01a9a04 die(), line 395 in "error.c" libdebug assertion "(framep->getGpr(STKP, &addr) == DB_SUCCESS && *nextStkpp == addr)" failed at line 1299 in file ../../../../../../../../../../../src/bos/usr/ccs/lib/libdbx/libdebug/modules/stackdebug/POWER/stackdb_FrameProgress.C rb_bug_context(ctx = 0x200f83b0, fmt = "Segmentation fault at %p", ... = 0x4, 0xd052f200, 0x0, 0x117100f5, 0x117100f5, 0x200f7f28), line 427 in "error.c" sigsegv(sig = 11, info = 0x200f863c, ctx = 0x200f83b0), line 879 in "signal.c" ---Files-------------------------------- RubyCore (15.8 KB) -- https://bugs.ruby-lang.org/

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[ruby-core:115363] [Ruby master Bug#7742] System encoding (Windows-1258) is not recognized by Ruby to convert back to UTF-8
by JesseJohnson (Jesse Johnson) 13 Nov '23

13 Nov '23

Issue #7742 has been updated by JesseJohnson (Jesse Johnson). If I understand correctly this test case should convert correctly and not raise a Encoding::ConverterNotFoundError error. ``` "\xE3\xEC".force_encoding(Encoding::Windows_1258).encode(Encoding::UTF_8) ``` ---------------------------------------- Bug #7742: System encoding (Windows-1258) is not recognized by Ruby to convert back to UTF-8 https://bugs.ruby-lang.org/issues/7742#change-105292 * Author: Mars (Hong Ha Dang ) * Status: Open * Priority: Normal * Assignee: duerst (Martin Dürst) * ruby -v: 1.9.3 ---------------------------------------- I installed Railsinstaller in win8. After intall complete the screen set to > configuration Railsinstaller on cmd (step 2). I give user name: DHH Mars and > email: dhhma...(a)gmail.com. It ran and have following massage: > > C:/RailsInstaller/scripts/config_check.rb:64:in 'exist?': code converter not > found <Windows-1258 to UTF-8> <Encoding::ConverterNotFoundError> from > C:/RailsInstaller/scripts/config_check.rb:64:in 'main' > > C:\Sites> -- https://bugs.ruby-lang.org/

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[ruby-core:115018] [Ruby master Bug#19922] ObjectSpace.dump_all in multiple threads in parallel causes SEGV
by wanabe (_ wanabe) 13 Nov '23

13 Nov '23

Issue #19922 has been reported by wanabe (_ wanabe). ---------------------------------------- Bug #19922: ObjectSpace.dump_all in multiple threads in parallel causes SEGV https://bugs.ruby-lang.org/issues/19922 * Author: wanabe (_ wanabe) * Status: Open * Priority: Normal * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN ---------------------------------------- `ObjectSpace.dump_all` in multiple threads in parallel causes SEGV. The reproduce code is here: ``` $ ruby -robjspace -e 'def dump; 10.times { ObjectSpace.dump_all } end; Thread.new { dump }; dump' /home/wanabe/.rbenv/versions/master/lib/ruby/3.3.0+0/objspace.rb:100: [BUG] Segmentation fault at 0x0000000000000000 (snip) ``` I attached the full log. I assumed that: - Thread1 - calls `rb_objspace_reachable_objects_from_root()` - changes `GET_RACTOR()->mfd`: mfd1 - calls `dump_flush()` - changes current thread due to IO - Thread2 - calls `rb_objspace_reachable_objects_from_root()` - changes `GET_RACTOR()->mfd`: mfd2 - calls `dump_flush()` - changes current thread due to IO - Thread1 - gets unexpected `GET_RACTOR()->mfd`: mfd2 ---Files-------------------------------- bug.log (23.1 KB) -- https://bugs.ruby-lang.org/

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[ruby-core:115358] [Ruby master Feature#11322] OpenUri: RuntimeError: HTTP redirection loop
by hsbt (Hiroshi SHIBATA) 13 Nov '23

13 Nov '23

Issue #11322 has been updated by hsbt (Hiroshi SHIBATA). https://github.com/ruby/open-uri/pull/18 is another approach with `max_redirects` option. ---------------------------------------- Feature #11322: OpenUri: RuntimeError: HTTP redirection loop https://bugs.ruby-lang.org/issues/11322#change-105282 * Author: tbsprs (Tobias Preuss) * Status: Assigned * Priority: Normal * Assignee: akr (Akira Tanaka) ---------------------------------------- Trying to download [this file](http://apps.london.ca/OpenData/ShapeFiles_Zipped/2010_skateboard_parks_shp.zip) from [this website](http://www.london.ca/city-hall/open-data/Pages/Open-Data-Data-Catalogue.aspx) with [`OpenUri`](http://ruby-doc.org/stdlib-2.2.2/libdoc/open-uri/rdoc/OpenURI.html) fails with the runtime error "HTTP redirection loop". Here is how I can reproduce the error: ~~~ > require 'open-uri' => true > open('http://apps.london.ca/OpenData/ShapeFiles_Zipped/2010_skateboard_parks_shp.…') RuntimeError: HTTP redirection loop: http://apps.london.ca/uniquesig87fdc01fb86ce6f0fd235c713015d7d7/uniquesig0/… from /home/john/.rvm/rubies/ruby-2.2.2/lib/ruby/2.2.0/open-uri.rb:232:in `open_loop' from /home/john/.rvm/rubies/ruby-2.2.2/lib/ruby/2.2.0/open-uri.rb:150:in `open_uri' from /home/john/.rvm/rubies/ruby-2.2.2/lib/ruby/2.2.0/open-uri.rb:716:in `open' from /home/john/.rvm/rubies/ruby-2.2.2/lib/ruby/2.2.0/open-uri.rb:34:in `open' from (irb):2 from /home/john/.rvm/rubies/ruby-2.2.2/bin/irb:11:in `<main>' ~~~ ---Files-------------------------------- open_uri-redirect-cookie-11322.patch (2.3 KB) -- https://bugs.ruby-lang.org/

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[ruby-core:115349] [Ruby master Feature#20002] Print C-level backtrace on uncaught Ruby exceptions
by osyoyu (Daisuke Aritomo) 12 Nov '23

12 Nov '23

Issue #20002 has been reported by osyoyu (Daisuke Aritomo). ---------------------------------------- Feature #20002: Print C-level backtrace on uncaught Ruby exceptions https://bugs.ruby-lang.org/issues/20002 * Author: osyoyu (Daisuke Aritomo) * Status: Open * Priority: Normal ---------------------------------------- When a uncaught Ruby exception occurs, the Ruby-level backtrace is printed. While this information is valuable for debugging Ruby code, this isn't necessarily the case when developing C extensions, since this message has no information about C code. In this example, the printed message only tells us that something is wrong inside `will_raise`. There are not much ways to debug further; the programmer must guess which Ruby API call is causing the exception. A C-level backtrace which includes the `VALUE x = NUM2INT(rb_str_new_cstr("1"));` line would be very helpful here. ``` % ruby main.rb main.rb:9:in `will_raise': no implicit conversion of String into Integer (TypeError) will_raise ^^^^^^^^^^ from main.rb:9:in `bar' from main.rb:4:in `foo' from main.rb:12:in `<main> ``` ```ruby require_relative "./ext" def foo bar end def bar will_raise end foo ``` ```c #include <ruby/ruby.h> VALUE will_raise(VALUE self) { // Do many things // There is no information leading to this line in the printed message VALUE x = NUM2INT(rb_str_new_cstr("1")); // no implicit conversion of String into Integer (TypeError) return Qtrue; } void Init_ext(void) { rb_define_method(rb_mKernel, "will_raise", will_raise, 0); } ``` I'm imagining something similar to the segfault report. In this case, it is clear that some code caused a SIGSEGV in `ext.c:12` (which is `int *p = NULL; *p = 1;`). ``` -- C level backtrace information ------------------------------------------- /home/osyoyu/.rbenv/versions/master/bin/ruby(rb_print_backtrace+0x14) [0x55dd24893174] /home/osyoyu/ruby/build/../vm_dump.c:812 /home/osyoyu/.rbenv/versions/master/bin/ruby(rb_vm_bugreport) /home/osyoyu/ruby/build/../vm_dump.c:1140 /home/osyoyu/.rbenv/versions/master/bin/ruby(rb_bug_for_fatal_signal+0x14c) [0x55dd24a064cc] /home/osyoyu/ruby/build/../error.c:1065 /home/osyoyu/.rbenv/versions/master/bin/ruby(sigsegv+0x51) [0x55dd24801c01] /home/osyoyu/ruby/build/../signal.c:920 /usr/lib/libc.so.6(0x7f6926558710) [0x7f6926558710] /home/osyoyu/ruby-bug/ext.so(will_segv+0x14) [0x7f69264fc244] /home/osyoyu/ruby-bug/ext.c:12 /home/osyoyu/ruby-bug/ext.so(will_segv) (null):0 /home/osyoyu/.rbenv/versions/master/bin/ruby(vm_call_cfunc_with_frame_+0xf4) [0x55dd24885d64] ../vm_insnhelper.c:3477 /home/osyoyu/.rbenv/versions/master/bin/ruby(vm_sendish+0xdd) [0x55dd2486aee1] ../vm_insnhelper.c:5555 /home/osyoyu/.rbenv/versions/master/bin/ruby(vm_exec_core) ../insns.def:835 ruby(vm_exec_loop+0x0) [0x55dd24867c52] /home/osyoyu/.rbenv/versions/master/bin/ruby(rb_vm_exec) /home/osyoyu/ruby/build/../vm.c:2420 /home/osyoyu/.rbenv/versions/master/bin/ruby(rb_ec_exec_node+0x2b) [0x55dd246e9fab] /home/osyoyu/ruby/build/../eval.c:287 /home/osyoyu/.rbenv/versions/master/bin/ruby(ruby_run_node) /home/osyoyu/ruby/build/../eval.c:328 /home/osyoyu/.rbenv/versions/master/bin/ruby(rb_main+0x1c) [0x55dd246e7a85] /home/osyoyu/ruby/build/../main.c:39 /home/osyoyu/.rbenv/versions/master/bin/ruby(main) /home/osyoyu/ruby/build/../main.c:58 /usr/lib/libc.so.6(0x7f6926541cd0) [0x7f6926541cd0] /usr/lib/libc.so.6(__libc_start_main+0x8a) [0x7f6926541d8a] [0x55dd246e7935] ``` As most Ruby users might not be interested in C-level information, this behavior could be made optional through startup options or environment variables. -- https://bugs.ruby-lang.org/

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[ruby-core:115351] Ruby 3.3.0-preview3 Released
by NARUSE, Yui 12 Nov '23

12 Nov '23

We are pleased to announce the release of Ruby 3.3.0-preview3. Ruby 3.3 adds a new parser named Prism, uses Lrama as a parser generator, adds a new pure-Ruby JIT compiler named RJIT, and many performance improvements especially YJIT. ## Prism * Introduced [the Prism parser](https://github.com/ruby/prism) as a default gem * Prism is a portable, error tolerant, and maintainable recursive descent parser for the Ruby language * Prism is production ready and actively maintained, you can use it in place of Ripper * There is [extensive documentation](https://ruby.github.io/prism/) on how to use Prism * Prism is both a C library that will be used internally by CRuby and a Ruby gem that can be used by any tooling which needs to parse Ruby code * Notable methods in the Prism API are: * `Prism.parse(source)` which returns the AST as part of a ParseResult * `Prism.dump(source, filepath)` which returns the serialized AST as a String * `Prism.parse_comments(source)` which returns the comments * You can make pull requests or issues directly on [the Prism repository](https://github.com/ruby/prism) if you are interested in contributing ## Use Lrama instead of Bison * Replace Bison with [Lrama LALR parser generator](https://github.com/yui-knk/lrama) [Feature #19637](https://bugs.ruby-lang.org/issues/19637) * If you have interest, please see [The future vision of Ruby Parser](https://rubykaigi.org/2023/presentations/spikeolaf.html) * Lrama internal parser is replaced with LR parser generated by Racc for maintainability * Parameterizing Rules `(?, *, +)` are supported, it will be used in Ruby parse.y ## RJIT * Introduced a pure-Ruby JIT compiler RJIT and replaced MJIT. * RJIT supports only x86-64 architecture on Unix platforms. * Unlike MJIT, it doesn't require a C compiler at runtime. * RJIT exists only for experimental purposes. * You should keep using YJIT in production. * If you are interested in developing JIT for Ruby, please check out [k0kubun's presentation on Day 3 of RubyKaigi](https://rubykaigi.org/2023/presentations/k0kubun.html#day3). ## YJIT * Major performance improvements over 3.2 * Support for splat and rest arguments has been improved. * Registers are allocated for stack operations of the virtual machine. * More calls with optional arguments are compiled. * Exception handlers are also compiled. * Instance variables no longer exit to the interpreter with megamorphic object shapes. * Unsupported call types no longer exit to the interpreter. * `Integer#!=`, `String#!=`, `Kernel#block_given?`, `Kernel#is_a?`, `Kernel#instance_of?`, `Module#===` are specially optimized. * Now more than 3x faster than the interpreter on optcarrot! * Significantly improved memory usage over 3.2 * Metadata for compiled code uses a lot less memory. * Generate more compact code on ARM64 * Compilation speed is now slightly faster than 3.2. * Add `RubyVM::YJIT.enable` that can enable YJIT at run-time * You can start YJIT without modifying command-line arguments or environment variables. * This can also be used to enable YJIT only once your application is done booting. `--yjit-disable` can be used if you want to use other YJIT options while disabling YJIT at boot. * Option to disable code GC and treat `--yjit-exec-mem-size` as a hard limit * Can produce better copy-on-write behavior on servers using unicorn and forking * `ratio_in_yjit` stat produced by `--yjit-stats` is now avaiable in release builds, a special stats or dev build is no longer required to access most stats. * Exit tracing option now supports sampling * `--trace-exits-sample-rate=N` * `--yjit-perf` is added to facilitate profiling with Linux perf. * More thorough testing and multiple bug fixes ### M:N thread scheduler * M:N thread scheduler was introduced. [[Feature #19842]](https://bugs.ruby-lang.org/issues/19842) * M Ruby threads are managed by N native threads (OS threads) so the thread creation and management cost are reduced. * It can break C-extension compatibility so that M:N thread scheduler is disabled on the main Ractor by default. * `RUBY_MN_THREADS=1` environment variable enables M:N threads on the main Ractor. * M:N threads are enabled on non-main Ractors. * `RUBY_MAX_CPU=n` environment variable sets maximum number of `N` (maximum number of native threads). The default value is 8. * Since only one Ruby thread per Ractor can run at the same time, the number of native threads will be used, which is the smaller of the number specified in `RUBY_MAX_CPU` and the number of running Ractors. So that single Ractor applications (most of applications) will use 1 native thread. * To support blocking operations, more than `N` native threads can be used. ## Other Notable New Features ### Language ## Performance improvements * `defined?(@ivar)` is optimized with Object Shapes. * Name resolution such as `Socket.getaddrinfo` can now be interrupted (in environments where pthreads are available). [Feature #19965](https://bugs.ruby-lang.org/issues/19965) * For this purpose, a pthread is now created whenever calling getaddrinfo or getnameinfo. This incurs some overhead in name resolution (about 2.5x in our experiments). We do not expect the name resolution overhead to be a problem for most applications, but if you observe such, or if you see unexpected affects that you believe are due to this change, please report them. * Environment variable `RUBY_GC_HEAP_REMEMBERED_WB_UNPROTECTED_OBJECTS_LIMIT_RATIO` has been added. [Feature #19571](https://bugs.ruby-lang.org/issues/19571) * Children of old objects are no longer immedately promoted to the old generation in the garbage collector. [Feature #19678](https://bugs.ruby-lang.org/issues/19678) * Support for weak references has been added to the garbage collector. [Feature #19783](https://bugs.ruby-lang.org/issues/19783) ## Other notable changes since 3.2 ### IRB IRB has received several enhancements, including but not limited to: - Advanced `irb:rdbg` integration that provides an equivalent debugging experience to `pry-byebug` ([doc](https://github.com/ruby/irb#debugging-with-irb)) - Pager support for `ls`, `show_source` and `show_cmds` commands. - More accurate and helpful information provided by the `ls` and `show_source` commands. - Experimental autocompletion using type analysis ([doc](https://github.com/ruby/irb#type-based-completion)) - It is now possible to change the font color and font style in the completion dialog by a newly introduced class Reline::Face ([doc](https://github.com/ruby/ruby/blob/master/doc/reline/face.md)) In addition, IRB has also undergone extensive refactoring and received dozens of bug fixes to facilitate easier future enhancements. ## Compatibility issues Note: Excluding feature bug fixes. ### Removed constants The following deprecated constants are removed. ### Removed methods The following deprecated methods are removed. ### Removed environment variables The following deprecated methods are removed. * Environment variable `RUBY_GC_HEAP_INIT_SLOTS` has been deprecated and is a no-op. Please use environment variables `RUBY_GC_HEAP_{0,1,2,3,4}_INIT_SLOTS` instead. [Feature #19785](https://bugs.ruby-lang.org/issues/19785) ## Stdlib compatibility issues ### `ext/readline` is retired * We have `reline` that is pure Ruby implementation compatible with `ext/readline` API. We rely on `reline` in the future. If you need to use `ext/readline`, you can install `ext/readline` via rubygems.org with `gem install readline-ext`. * We no longer need to install libraries like `libreadline` or `libedit`. ## C API updates ### Updated C APIs The following APIs are updated. ### Removed C APIs The following deprecated APIs are removed. ## Standard library updates RubyGems and Bundler warn if users require gem that is scheduled to become the bundled gems in the future version of Ruby. Targeted libraries are: * abbrev * base64 * bigdecimal * csv * drb * getoptlong * mutex_m * nkf * observer * racc * resolv-replace * rinda * syslog The following default gem is added. * prism 0.15.1 The following default gems are updated. * RubyGems 3.5.0.dev * base64 0.2.0 * benchmark 0.3.0 * bigdecimal 3.1.5 * bundler 2.5.0.dev * cgi 0.4.0 * csv 3.2.8 * date 3.3.4 * delegate 0.3.1 * drb 2.2.0 * english 0.8.0 * erb 4.0.3 * etc 1.4.3.dev.1 * fcntl 1.1.0 * fiddle 1.1.2 * fileutils 1.7.2 * find 0.2.0 * getoptlong 0.2.1 * io-console 0.6.1.dev * irb 1.8.3 * logger 1.6.0 * mutex_m 0.2.0 * net-http 0.4.0 * net-protocol 0.2.2 * nkf 0.1.3 * observer 0.1.2 * open-uri 0.4.0 * open3 0.2.0 * openssl 3.2.0 * optparse 0.4.0 * ostruct 0.6.0 * pathname 0.3.0 * pp 0.5.0 * prettyprint 0.2.0 * pstore 0.1.3 * psych 5.1.1.1 * rdoc 6.6.0 * reline 0.3.9 * rinda 0.2.0 * securerandom 0.3.0 * shellwords 0.2.0 * singleton 0.2.0 * stringio 3.0.9 * strscan 3.0.7 * syntax_suggest 1.1.0 * tempfile 0.2.0 * time 0.3.0 * timeout 0.4.1 * tmpdir 0.2.0 * tsort 0.2.0 * un 0.3.0 * uri 0.13.0 * weakref 0.1.3 * win32ole 1.8.10 * yaml 0.3.0 * zlib 3.1.0 The following bundled gem is promoted from default gems. * racc 1.7.3 The following bundled gems are updated. * minitest 5.20.0 * rake 13.1.0 * test-unit 3.6.1 * rexml 3.2.6 * rss 0.3.0 * net-imap 0.4.4 * net-smtp 0.4.0 * rbs 3.2.2 * typeprof 0.21.8 * debug 1.8.0 See GitHub releases like [Logger](https://github.com/ruby/logger/releases) or changelog for details of the default gems or bundled gems. See [NEWS](https://github.com/ruby/ruby/blob/v3_3_0_preview3/NEWS.md) or [commit logs](https://github.com/ruby/ruby/compare/v3_2_0...v3_3_0_preview3) for more details. With those changes, [5207 files changed, 284820 insertions(+), 174773 deletions(-)](https://github.com/ruby/ruby/compare/v3_2_0...v3_3_0_preview3… since Ruby 3.2.0! ## Download * <https://cache.ruby-lang.org/pub/ruby/3.3/ruby-3.3.0-preview3.tar.gz> SIZE: 21550473 SHA1: 2811f191d66dffee0206771873bd990857ae4ed6 SHA256: 0969141be92e67e0edb84a8fb354acc98f01bd78e602a23a0f136045c82f4809 SHA512: 94db07a6958c09809b2e5b597fa55a121074e8bacb3bf588c83cf0d35b07a8b070172035a49d1abf0d8ee364a9ace824f34e677f7327ffe1acdbab0938ac49c4 * <https://cache.ruby-lang.org/pub/ruby/3.3/ruby-3.3.0-preview3.tar.xz> SIZE: 15970144 SHA1: 496600612605f8ebeb955255e98bac73a4cbc045 SHA256: f79afcf122dc7d04fe26cfa4436b9c488b21766fc54b0d2dfb2ba41cd0cdd355 SHA512: d7ab0d703e7884efd31045933409cd68fac1d9941963537ccc8e309ca7c8bee8500a68182135acba22cbdbf4a8ae99f39bf7f0925273eb4fbc3728c0c1ba0c19 * <https://cache.ruby-lang.org/pub/ruby/3.3/ruby-3.3.0-preview3.zip> SIZE: 26618303 SHA1: 6a13e08c7e484d42037c1e2c87c5d0e220f893a0 SHA256: c35bf637a647c2f60148368ffb374db5c258570911794f46b6dfdb98ebfe95d9 SHA512: c4ef2cdcdadeb85ad1d42aedc97f9f3d609b3b01eea2319451cf92c81bd31ae8129b7c91fc68571469dd888c01ea0f48f73234b965db17f6a87404ca382f7794 ## What is Ruby Ruby was first developed by Matz (Yukihiro Matsumoto) in 1993, and is now developed as Open Source. It runs on multiple platforms and is used all over the world especially for web development.

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[ruby-core:115307] [Ruby master Bug#19994] Seemingly require causes segfault??
by mtasaka (Mamoru Tasaka) 12 Nov '23

12 Nov '23

Issue #19994 has been reported by mtasaka (Mamoru Tasaka). ---------------------------------------- Bug #19994: Seemingly require causes segfault?? https://bugs.ruby-lang.org/issues/19994 * Author: mtasaka (Mamoru Tasaka) * Status: Open * Priority: Normal * ruby -v: ruby 3.3.0dev (2023-11-08 master c8d4b103a9) [x86_64-linux] * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN ---------------------------------------- With commit:c8d4b103a9 , trying to execute stringex-2.8.6 https://github.com/rsl/stringex/releases/tag/v2.8.6 testsuite seems to cause ruby segfault. Trying to minimize code, the following causes segfault for almost all time (about 90%): ``` require 'test/unit' require 'active_record' ActiveRecord::Base.establish_connection adapter: "sqlite3", database: ":memory:" ``` (strangely, with commenting out the first line i.e. `require 'test/unit'` segfault no longer ocuurs...) Backtrace: ``` Thread 1 "ruby-mri" received signal SIGSEGV, Segmentation fault. vm_call_cfunc_with_frame_ (ec=0x55555555d1c0, reg_cfp=0x7ffff7670b78, calling=<optimized out>, argc=<optimized out>, argv=<optimized out>, stack_bottom=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3499 3499 int len = cfunc->argc; Missing separate debuginfos, use: dnf debuginfo-install glibc-2.38.9000-17.fc40.x86_64 gmp-6.2.1-5.fc39.x86_64 libgcc-13.2.1-4.fc40.x86_64 libxcrypt-4.4.36-2.fc39.x86_64 libyaml-0.2.5-12.fc39.x86_64 openssl-libs-3.1.4-1.fc40.x86_64 rubygem-json-2.6.3-204.fc40.140.x86_64 rubygem-sqlite3-1.6.1-2.fc40.140.x86_64 sqlite-libs-3.44.0-1.fc40.x86_64 zlib-1.2.13-5.fc40.x86_64 (gdb) bt #0 vm_call_cfunc_with_frame_ (ec=0x55555555d1c0, reg_cfp=0x7ffff7670b78, calling=<optimized out>, argc=<optimized out>, argv=<optimized out>, stack_bottom=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3499 #1 0x00007ffff7c5b62c in vm_sendish (method_explorer=<optimized out>, block_handler=<optimized out>, cd=<optimized out>, reg_cfp=<optimized out>, ec=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:5581 #2 vm_exec_core (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/redhat-linux-build/insns.def:822 #3 0x00007ffff7c739dd in rb_vm_exec (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2472 #4 0x00007ffff7c61463 in vm_yield_with_cref (is_lambda=0, cref=0x0, kw_splat=0, argv=0x0, argc=0, ec=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:1622 #5 vm_yield (kw_splat=0, argv=0x0, argc=0, ec=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:1630 #6 rb_yield_0 (argv=0x0, argc=0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_eval.c:1362 #7 rb_yield_values2 (argc=0, argv=0x0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_eval.c:1408 #8 0x00007ffff7ad3b4f in rb_ensure (b_proc=0x7fffde0fb990 <monitor_sync_body>, data1=140736888155080, e_proc=0x7fffde0fb6e0 <monitor_sync_ensure>, data2=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/eval.c:1009 #9 0x00007ffff7c540c7 in vm_call_cfunc_with_frame_ (ec=0x55555555d1c0, reg_cfp=0x7ffff7670c20, calling=<optimized out>, argc=<optimized out>, argv=<optimized out>, stack_bottom=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3503 #10 0x00007ffff7c56641 in vm_sendish (ec=0x55555555d1c0, reg_cfp=0x7ffff7670c20, cd=<optimized out>, block_handler=<optimized out>, method_explorer=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_callinfo.h:407 #11 0x00007ffff7c5d43f in vm_exec_core (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/redhat-linux-build/insns.def:802 #12 0x00007ffff7c739dd in rb_vm_exec (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2472 #13 0x00007ffff7b358fb in require_internal (ec=ec@entry=0x55555555d1c0, fname=<optimized out>, fname@entry=140736887218320, exception=exception@entry=1, warn=false) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1247 #14 0x00007ffff7b35e4e in rb_require_string_internal (fname=140736887218320) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1346 #15 0x00007ffff7b35f08 in rb_require_string (fname=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1339 #16 0x00007ffff7c540c7 in vm_call_cfunc_with_frame_ (ec=0x55555555d1c0, reg_cfp=0x7ffff7670cc8, calling=<optimized out>, argc=<optimized out>, argv=<optimized out>, stack_bottom=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3503 #17 0x00007ffff7c57b1f in vm_call_alias (ec=0x55555555d1c0, cfp=0x7ffff7670cc8, calling=0x7fffffffce00) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3873 #18 0x00007ffff7c5b62c in vm_sendish (method_explorer=<optimized out>, block_handler=<optimized out>, cd=<optimized out>, reg_cfp=<optimized out>, ec=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:5581 #19 vm_exec_core (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/redhat-linux-build/insns.def:822 #20 0x00007ffff7c739dd in rb_vm_exec (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2472 #21 0x00007ffff7b358fb in require_internal (ec=ec@entry=0x55555555d1c0, fname=<optimized out>, fname@entry=140736885373720, exception=exception@entry=1, warn=false) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1247 #22 0x00007ffff7b35e4e in rb_require_string_internal (fname=140736885373720) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1346 #23 0x00007ffff7b35f08 in rb_require_string (fname=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1339 #24 0x00007ffff7c540c7 in vm_call_cfunc_with_frame_ (ec=0x55555555d1c0, reg_cfp=0x7ffff7670d70, calling=<optimized out>, argc=<optimized out>, argv=<optimized out>, stack_bottom=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3503 #25 0x00007ffff7c57b1f in vm_call_alias (ec=0x55555555d1c0, cfp=0x7ffff7670d70, calling=0x7fffffffd3f0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3873 #26 0x00007ffff7c5b62c in vm_sendish (method_explorer=<optimized out>, block_handler=<optimized out>, cd=<optimized out>, reg_cfp=<optimized out>, ec=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:5581 #27 vm_exec_core (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/redhat-linux-build/insns.def:822 #28 0x00007ffff7c73bfe in vm_exec_loop (result=<optimized out>, tag=0x7fffffffd480, state=<optimized out>, ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2499 #29 rb_vm_exec (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2478 #30 0x00007ffff7b358fb in require_internal (ec=ec@entry=0x55555555d1c0, fname=<optimized out>, fname@entry=140736888126320, exception=exception@entry=1, warn=false) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1247 #31 0x00007ffff7b35e4e in rb_require_string_internal (fname=140736888126320) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1346 #32 0x00007ffff7b35f08 in rb_require_string (fname=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1339 #33 0x00007ffff7c540c7 in vm_call_cfunc_with_frame_ (ec=0x55555555d1c0, reg_cfp=0x7ffff7670e18, calling=<optimized out>, argc=<optimized out>, argv=<optimized out>, stack_bottom=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3503 #34 0x00007ffff7c57b1f in vm_call_alias (ec=0x55555555d1c0, cfp=0x7ffff7670e18, calling=0x7fffffffd9e0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3873 #35 0x00007ffff7c5b62c in vm_sendish (method_explorer=<optimized out>, block_handler=<optimized out>, cd=<optimized out>, reg_cfp=<optimized out>, ec=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:5581 --Type <RET> for more, q to quit, c to continue without paging-- #36 vm_exec_core (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/redhat-linux-build/insns.def:822 #37 0x00007ffff7c739dd in rb_vm_exec (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2472 #38 0x00007ffff7b358fb in require_internal (ec=ec@entry=0x55555555d1c0, fname=<optimized out>, fname@entry=140736882997040, exception=exception@entry=1, warn=false) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1247 #39 0x00007ffff7b35e4e in rb_require_string_internal (fname=140736882997040) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1346 #40 0x00007ffff7b35f08 in rb_require_string (fname=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1339 #41 0x00007ffff7c540c7 in vm_call_cfunc_with_frame_ (ec=0x55555555d1c0, reg_cfp=0x7ffff7670ec0, calling=<optimized out>, argc=<optimized out>, argv=<optimized out>, stack_bottom=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3503 #42 0x00007ffff7c57193 in vm_call_alias (calling=0x7fffffffe040, cfp=0x7ffff7670ec0, ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3873 #43 vm_call_method_each_type (ec=0x55555555d1c0, cfp=0x7ffff7670ec0, calling=0x7fffffffe040) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:4475 #44 0x00007ffff7c5b62c in vm_sendish (method_explorer=<optimized out>, block_handler=<optimized out>, cd=<optimized out>, reg_cfp=<optimized out>, ec=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:5581 #45 vm_exec_core (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/redhat-linux-build/insns.def:822 #46 0x00007ffff7c73bfe in vm_exec_loop (result=<optimized out>, tag=0x7fffffffe0d0, state=<optimized out>, ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2499 #47 rb_vm_exec (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2478 #48 0x00007ffff7adbc0a in rb_ec_exec_node (ec=ec@entry=0x55555555d1c0, n=n@entry=0x7fffdc3de580) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/eval.c:287 #49 0x00007ffff7addb03 in ruby_run_node (n=0x7fffdc3de580) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/eval.c:328 #50 0x0000555555555197 in rb_main (argv=0x7fffffffe4a8, argc=2) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/main.c:39 #51 main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/main.c:58 (gdb) p cfunc $1 = (const rb_method_cfunc_t *) 0xb (gdb) deta Detaching from program: /usr/bin/ruby-mri, process 345 /usr/share/rubygems/rubygems.rb:1220: [BUG] Segmentation fault at 0x000000000000001b ruby 3.3.0dev (2023-11-08 master c8d4b103a9) [x86_64-linux] -- Control frame information ----------------------------------------------- c:0022 p:---- s:0126 e:000125 CFUNC c:0021 p:0007 s:0123 e:000120 METHOD /usr/share/rubygems/rubygems.rb:1220 c:0020 p:0015 s:0115 e:000114 BLOCK <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:42 [FINISH] c:0019 p:---- s:0104 e:000103 [Inferior 1 (process 345) detached] CFUNC :synchronize c:0018 p:0017 s:0100 e:000099 METHOD <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:39 c:0017 p:0006 s:0094 e:000093 TOP /usr/share/gems/gems/sqlite3-1.6.1/lib/sqlite3/pragmas.rb:1 [FINISH] c:0016 p:---- s:0091 e:000090 CFUNC :require c:0015 p:0023 s:0086 e:000085 METHOD <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128 c:0014 p:0020 s:0080 e:000079 TOP /usr/share/gems/gems/sqlite3-1.6.1/lib/sqlite3/database.rb:3 [FINISH] c:0013 p:---- s:0077 e:000076 CFUNC :require c:0012 p:0023 s:0072 e:000071 METHOD <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128 c:0011 p:0033 s:0066 e:000065 TOP /usr/share/gems/gems/sqlite3-1.6.1/lib/sqlite3.rb:9 [FINISH] c:0010 p:---- s:0063 e:000062 CFUNC :require c:0009 p:0023 s:0058 e:000057 METHOD <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128 c:0008 p:0078 s:0052 e:000051 TOP /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_adapters/sqlite3_adapter.rb:14 [FINISH] c:0007 p:---- s:0049 e:000048 CFUNC :require c:0006 p:0023 s:0044 e:000043 METHOD <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128 c:0005 p:0051 s:0038 e:000037 METHOD /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_adapters/abstract/connection_handler.rb:268 c:0004 p:0066 s:0027 e:000026 METHOD /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_adapters/abstract/connection_handler.rb:129 c:0003 p:0049 s:0013 e:000012 METHOD /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_handling.rb:52 c:0002 p:0020 s:0006 e:000005 EVAL ./trial.rb:4 [FINISH] c:0001 p:0000 s:0003 E:0018a0 DUMMY [FINISH] -- Ruby level backtrace information ---------------------------------------- ./trial.rb:4:in `<main>' /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_handling.rb:52:in `establish_connection' /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_adapters/abstract/connection_handler.rb:129:in `establish_connection' /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_adapters/abstract/connection_handler.rb:268:in `resolve_pool_config' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_adapters/sqlite3_adapter.rb:14:in `<top (required)>' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' /usr/share/gems/gems/sqlite3-1.6.1/lib/sqlite3.rb:9:in `<top (required)>' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' /usr/share/gems/gems/sqlite3-1.6.1/lib/sqlite3/database.rb:3:in `<top (required)>' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' /usr/share/gems/gems/sqlite3-1.6.1/lib/sqlite3/pragmas.rb:1:in `<top (required)>' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:39:in `require' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:39:in `synchronize' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:42:in `block in require' /usr/share/rubygems/rubygems.rb:1220:in `find_unresolved_default_spec' ``` Looks like `cfunc` points to invalid address. Currently I am unable to minimize the code further... -- https://bugs.ruby-lang.org/

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