December 2022 - ruby-dev - ml.ruby-lang.org

[ruby-dev:52032] [Ruby master Bug#18024] Ractor crashes when connections are closed in multiple Ractors
by niku (niku _) 27 Dec '22

27 Dec '22

Issue #18024 has been updated by niku (niku _). I also couldn't reproduce it on m2 mac with both ruby versions 3.0.0 which is reported and 3.2.0 the latest. I hope it helps. ``` ~/src/confirm_bugs.ruby-lang.org/18024 () asdf local ruby 3.0.0 ~/src/confirm_bugs.ruby-lang.org/18024 () ruby --version ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [arm64-darwin22] ~/src/confirm_bugs.ruby-lang.org/18024 () ruby description.rb <internal:ractor>:267: warning: Ractor is experimental, and the behavior may change in future versions of Ruby! Also there are many implementation issues. "Starting a sender" "Worker|0 Data: yay" "Worker|0 Data: yay" "Worker|0 Data: yay" "Worker|1 Data: yay" "Worker|1 Data: yay" "Worker|1 Data: yay" "Worker|0 Data: yay" "Worker|0 Data: yay" "Worker|1 Data: yay" "Worker|0 Data: yay" ^C<internal:ractor>:694:in `take': Interrupt from description.rb:35:in `block in <main>' from description.rb:35:in `each' from description.rb:35:in `<main>' ~/src/confirm_bugs.ruby-lang.org/18024 () asdf local ruby 3.2.0 ~/src/confirm_bugs.ruby-lang.org/18024 () ruby --version ruby 3.2.0 (2022-12-25 revision a528908271) [arm64-darwin22] ~/src/confirm_bugs.ruby-lang.org/18024 () ruby description.rb description.rb:9: warning: Ractor is experimental, and the behavior may change in future versions of Ruby! Also there are many implementation issues. "Starting a sender" "Worker|0 Data: yay" "Worker|0 Data: yay" "Worker|0 Data: yay" "Worker|0 Data: yay" "Worker|0 Data: yay" "Worker|1 Data: yay" "Worker|0 Data: yay" "Worker|1 Data: yay" "Worker|1 Data: yay" "Worker|0 Data: yay" ^C<internal:ractor>:698:in `take': Interrupt from description.rb:35:in `block in <main>' from description.rb:35:in `each' from description.rb:35:in `<main>' ``` ---------------------------------------- Bug #18024: Ractor crashes when connections are closed in multiple Ractors https://bugs.ruby-lang.org/issues/18024#change-100818 * Author: tagomoris (Satoshi TAGOMORI) * Status: Assigned * Priority: Normal * Assignee: ko1 (Koichi Sasada) * ruby -v: ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [arm64-darwin20] * Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN ---------------------------------------- When multiple Ractors will accept and close connections, that script caused the crash shown below. This pattern is taken when we want to distribute the overhead of `accept` to multiple CPU cores. Script: ``` require 'socket' try_times = 10 worker_num = 2 listener = TCPServer.new("127.0.0.1", 8228) listener.listen(100) workers = worker_num.times.map do |i| Ractor.new(i, listener.dup) do |index, sock| while conn = sock.accept begin data = conn.read p "Worker|#{index} Data: #{data}" conn.close rescue => e p "Worker|#{index} #{e.full_message}" end end rescue => e $stderr.puts "Error, worker#{index}: #{e.full_message}" end end p "Starting a sender" sender = Ractor.new(try_times) do |tries| tries.times.each do s = TCPSocket.new("127.0.0.1", 8228) s.write("yay") ensure s.close rescue nil end end sender.take workers.each{|w| w.take} p "End" ``` Crash report: ``` <internal:ractor>:267: warning: Ractor is experimental, and the behavior may change in future versions of Ruby! Also there are many implementation issues. "Starting a sender" "Worker|1 Data: yay" snippets/ractor_accept.rb:30: [BUG] Bus Error at 0x00000014000001f5 ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [arm64-darwin20] -- Crash Report log information -------------------------------------------- See Crash Report log file under the one of following: * ~/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:0006 p:---- s:0023 e:000022 CFUNC :close c:0005 p:0028 s:0019 e:000017 BLOCK snippets/ractor_accept.rb:30 [FINISH] c:0004 p:---- s:0014 e:000013 CFUNC :times c:0003 p:---- s:0011 e:000010 CFUNC :each c:0002 p:0008 s:0007 e:000006 BLOCK snippets/ractor_accept.rb:26 [FINISH] c:0001 p:---- s:0003 e:000002 (none) [FINISH] -- Ruby level backtrace information ---------------------------------------- snippets/ractor_accept.rb:26:in `block in <main>' snippets/ractor_accept.rb:26:in `each' snippets/ractor_accept.rb:26:in `times' snippets/ractor_accept.rb:30:in `block (2 levels) in <main>' snippets/ractor_accept.rb:30:in `close' -- Other runtime information ----------------------------------------------- * Loaded script: snippets/ractor_accept.rb * Loaded features: 0 enumerator.so 1 thread.rb 2 rational.so 3 complex.so 4 ruby2_keywords.rb 5 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250000000-260000000 r-- 260000000-270000000 r-- 270000000-280000000 r-- fc0000000-1000000000 --- 1000000000-7000000000 --- [IMPORTANT] Don't forget to include the Crash Report log file under DiagnosticReports directory in bug reports. Abort trap: 6 ``` ---Files-------------------------------- ruby_2021-07-06-231613_Moris-Macbook-Air.crash (35.9 KB) ruby_2021-08-24-203317_Moris-Macbook-Air.crash (17.4 KB) -- https://bugs.ruby-lang.org/

1 0

[ruby-dev:52014] [Ruby master Feature#19194] Add Regexp.linear_time?
by make_now_just (Hiroya Fujinami) 24 Dec '22

24 Dec '22

Issue #19194 has been reported by make_now_just (Hiroya Fujinami). ---------------------------------------- Feature #19194: Add Regexp.linear_time? https://bugs.ruby-lang.org/issues/19194 * Author: make_now_just (Hiroya Fujinami) * Status: Open * Priority: Normal ---------------------------------------- I suggest adding a new method named `Regexp.linear_time?` to check if matching against a given regexp can be completed in linear time by the optimization introduced in #19104 (GitHub PR [#6486](https://github.com/ruby/ruby/pull/6486)). This method was discussed in #19104. I'm not sure the name is best. # Example ``` Regexp.linear_time?(/a/) # => true Regexp.linear_time?(/(a|a)*\1/) # => false, because this uses a back-reference. # This can accept a regexp source string and flags like `Regexp.new`. Regexp.linear_time?('a') # => true Regexp.linear_time?('a', Regexp::IGNORECASE) # => true ``` For example, this method is useful for implementing a Rubocop rule to check a regexp is ReDoS safe. # Implementation Implementation is done at GitHub PR [#6901](https://github.com/ruby/ruby/pull/6901). See the details there. -- https://bugs.ruby-lang.org/

5 9

[ruby-dev:52013] [Ruby master Feature#19193] drop DOS TEXT mode support
by YO4 (Yoshinao Muramatsu) 20 Dec '22

20 Dec '22

Issue #19193 has been reported by YO4 (Yoshinao Muramatsu). ---------------------------------------- Feature #19193: drop DOS TEXT mode support https://bugs.ruby-lang.org/issues/19193 * Author: YO4 (Yoshinao Muramatsu) * Status: Open * Priority: Normal ---------------------------------------- On Windows platform, ```File.open(path, "r")``` returns an object different from "rt" and "rb". I call that DOS TEXT mode here. DOS TEXT mode does * crlf conversion * 0x1a treated EOF charactor on read and others (see Bug #19192). But DOS TEXT mode is almost unnecessary today and it seems to introduce lot of code complexities. Now there is less need for dos text mode * Microsoft's most apps works without CRLF newline. * Creating a crlf text file today should be explicit. (but that is default mode on windows now) * Interpreting EOF charactor can cause trouble. I think it's time to consider dropping DOS TEXT mode. What challenges are there and what preparation is needed? -- https://bugs.ruby-lang.org/

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[ruby-dev:52028] [Ruby master Feature#19134] ** is not allowed in def foo(...)
by Eregon (Benoit Daloze) 15 Dec '22

15 Dec '22

Issue #19134 has been updated by Eregon (Benoit Daloze). shugo (Shugo Maeda) wrote in #note-14: > Speaking of implicity of blocks, `def f; g(&); end` causes a syntax error, so it may be better to allow it, or disallow `def f(...); g(&); end` in the future versions. Since some time @ko1 worked on no implicit block if not a parameter of the method (with the exception of `yield` in the body). I think that's a good property, so I think it's good for `def f; g(&); end` to be a syntax error. For `def f(...); g(&); end` "..." is "capture all arguments, positional, keyword and block" so I think it's more natural there to be able to access the block (although I can't think of when that would be useful, maybe `def f(...); g(&); h(...) end` when `h` is known to ignore the block but that feels hacky, better use `(*, **, &)` parameters then). > Anyway, I've fixed the behavior of `...` as described in #note-9. Thanks! ---------------------------------------- Feature #19134: ** is not allowed in def foo(...) https://bugs.ruby-lang.org/issues/19134#change-100680 * Author: shugo (Shugo Maeda) * Status: Closed * Priority: Normal * Assignee: matz (Yukihiro Matsumoto) * Target version: 3.2 ---------------------------------------- `*` and `&` are allowed in the body of a method with `...` argument forwarding, but `**` is not allowed. ``` def foo(...) bar(*) # OK baz(&) # OK quux(**) # NG end ``` Is it intended behavior? It seems that parse.y has code like `#ifdef RUBY3_KEYWORDS`, and if RUBY3_KEYWORDS, `**` will also be supported. -- https://bugs.ruby-lang.org/

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[ruby-dev:52027] [Ruby master Feature#19134] ** is not allowed in def foo(...)
by shugo (Shugo Maeda) 15 Dec '22

15 Dec '22

Issue #19134 has been updated by shugo (Shugo Maeda). mame (Yusuke Endoh) wrote in #note-12: > I feel that only `&` is acceptable since a block is implicitly passed. But I don't think `*` and `**` make sense inside `def foo(...)`. Speaking of implicity of blocks, `def f; g(&); end` causes a syntax error, so it may be better to allow it, or disallow `def f(...); g(&); end` in the future versions. Anyway, I've fixed the behavior of `...` as described in #note-9. ---------------------------------------- Feature #19134: ** is not allowed in def foo(...) https://bugs.ruby-lang.org/issues/19134#change-100678 * Author: shugo (Shugo Maeda) * Status: Closed * Priority: Normal * Assignee: matz (Yukihiro Matsumoto) * Target version: 3.2 ---------------------------------------- `*` and `&` are allowed in the body of a method with `...` argument forwarding, but `**` is not allowed. ``` def foo(...) bar(*) # OK baz(&) # OK quux(**) # NG end ``` Is it intended behavior? It seems that parse.y has code like `#ifdef RUBY3_KEYWORDS`, and if RUBY3_KEYWORDS, `**` will also be supported. -- https://bugs.ruby-lang.org/

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[ruby-dev:52025] [Ruby master Feature#19134] ** is not allowed in def foo(...)
by mame (Yusuke Endoh) 14 Dec '22

14 Dec '22

Issue #19134 has been updated by mame (Yusuke Endoh). > IMHO if ... is used then *, ** and & should all be forbidden (a SyntaxError at parse time). I agree with this. If you want to do that, you should take it with `def foo(*, **, &)`. I feel that only `&` is acceptable since a block is implicitly passed. But I don't think `*` and `**` make sense inside `def foo(...)`. ---------------------------------------- Feature #19134: ** is not allowed in def foo(...) https://bugs.ruby-lang.org/issues/19134#change-100630 * Author: shugo (Shugo Maeda) * Status: Open * Priority: Normal * Assignee: matz (Yukihiro Matsumoto) * Target version: 3.2 ---------------------------------------- `*` and `&` are allowed in the body of a method with `...` argument forwarding, but `**` is not allowed. ``` def foo(...) bar(*) # OK baz(&) # OK quux(**) # NG end ``` Is it intended behavior? It seems that parse.y has code like `#ifdef RUBY3_KEYWORDS`, and if RUBY3_KEYWORDS, `**` will also be supported. -- https://bugs.ruby-lang.org/

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[ruby-dev:52021] [Ruby master Feature#19134] ** is not allowed in def foo(...)
by Eregon (Benoit Daloze) 12 Dec '22

12 Dec '22

Issue #19134 has been updated by Eregon (Benoit Daloze). shugo (Shugo Maeda) wrote in #note-8: > `&` is allowed in 3.1, so it's a breaking change to prohibit it. Right and `&` is not problematic re performance, it's a completely separate argument anyway. I agree with your proposal in your comment just above this one. ---------------------------------------- Feature #19134: ** is not allowed in def foo(...) https://bugs.ruby-lang.org/issues/19134#change-100573 * Author: shugo (Shugo Maeda) * Status: Open * Priority: Normal * Assignee: matz (Yukihiro Matsumoto) * Target version: 3.2 ---------------------------------------- `*` and `&` are allowed in the body of a method with `...` argument forwarding, but `**` is not allowed. ``` def foo(...) bar(*) # OK baz(&) # OK quux(**) # NG end ``` Is it intended behavior? It seems that parse.y has code like `#ifdef RUBY3_KEYWORDS`, and if RUBY3_KEYWORDS, `**` will also be supported. -- https://bugs.ruby-lang.org/

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[ruby-dev:52029]
by Masaki Murano 11 Dec '22

11 Dec '22

unsubscribe

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[ruby-dev:52012] [Ruby master Feature#19134] ** is not allowed in def foo(...)
by shugo (Shugo Maeda) 04 Dec '22

04 Dec '22

Issue #19134 has been updated by shugo (Shugo Maeda). Status changed from Closed to Open I think it's most conservative to probhibit `*` and `**`: ``` def foo(...) bar(&) # OK baz(*) # error quux(**) # error end ``` And a error should occur in the following code instead of dropping keyword arguments: ``` def foo(*, **, &) bar(...) end def bar(*args, **kw, &block) p [args, kw, block&.call] end foo(1, 2, x: 3, y: 4) { 5 } ``` What do you think, Matz? ---------------------------------------- Feature #19134: ** is not allowed in def foo(...) https://bugs.ruby-lang.org/issues/19134#change-100495 * Author: shugo (Shugo Maeda) * Status: Open * Priority: Normal * Assignee: matz (Yukihiro Matsumoto) ---------------------------------------- `*` and `&` are allowed in the body of a method with `...` argument forwarding, but `**` is not allowed. ``` def foo(...) bar(*) # OK baz(&) # OK quux(**) # NG end ``` Is it intended behavior? It seems that parse.y has code like `#ifdef RUBY3_KEYWORDS`, and if RUBY3_KEYWORDS, `**` will also be supported. -- https://bugs.ruby-lang.org/

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[ruby-dev:52011] [Ruby master Feature#19134] ** is not allowed in def foo(...)
by shugo (Shugo Maeda) 04 Dec '22

04 Dec '22

Issue #19134 has been updated by shugo (Shugo Maeda). Eregon (Benoit Daloze) wrote in #note-5: > IMHO if `...` is used then `*`, `**` and `&` should all be forbidden (a SyntaxError at parse time). > Because that way is the best for optimizing delegation. > And also taking apart `*` and `**` is arguably not really delegation anymore. `&` is allowed in 3.1, so it's a breaking change to prohibit it. ---------------------------------------- Feature #19134: ** is not allowed in def foo(...) https://bugs.ruby-lang.org/issues/19134#change-100493 * Author: shugo (Shugo Maeda) * Status: Closed * Priority: Normal * Assignee: matz (Yukihiro Matsumoto) ---------------------------------------- `*` and `&` are allowed in the body of a method with `...` argument forwarding, but `**` is not allowed. ``` def foo(...) bar(*) # OK baz(&) # OK quux(**) # NG end ``` Is it intended behavior? It seems that parse.y has code like `#ifdef RUBY3_KEYWORDS`, and if RUBY3_KEYWORDS, `**` will also be supported. -- https://bugs.ruby-lang.org/

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