March 2025 - ruby-core - ml.ruby-lang.org

[ruby-core:120619] [Ruby master Bug#21030] Bug: #step with Range<ActiveSupport::Duration> behavior broken on Ruby 3.4.1
by johnnyshields (Johnny Shields) 05 May '25

05 May '25

Issue #21030 has been reported by johnnyshields (Johnny Shields). ---------------------------------------- Bug #21030: Bug: #step with Range<ActiveSupport::Duration> behavior broken on Ruby 3.4.1 https://bugs.ruby-lang.org/issues/21030 * Author: johnnyshields (Johnny Shields) * Status: Open * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- Issue also filed at: https://github.com/rails/rails/issues/54199 ### System configuration **Rails version**: 7.1.5.1 **Ruby version**: 3.3.4 (works) vs 3.4.1 (broken) ### What's broken Calling `#step` then `#to_a` on a `Range` whose beginning/end values are the same is expected to return an `Array` wrapping the `Range`'s singular value. In other words, `(x..x).step(n).to_a` should return `[x]` -- note this is also the same as `(x..x).to_a` The following case breaks on Ruby 3.4.1 related to `ActiveSupport::Duration` class, where it returns an empty array. It works on Ruby 3.3. Both tested with Rails 7.1.5.1. It's very easy to reproduce. I'm unsure if this is a Ruby bug or a Rails bug so I'm filing it in both places. The upgrade of Ruby is what produces the difference. ```ruby require 'active_support/all' # version 7.1.5.1 int = 100 dur = 100.seconds # ActiveSupport/Duration # The bug (dur..dur).step(10).to_a # => Ruby 3.3 returns [100 seconds] - CORRECT # => Ruby 3.4 returns [] - INCORRECT (int..dur).step(10).to_a # => Ruby 3.3 returns [100] - CORRECT # => Ruby 3.4 returns [] - INCORRECT # Note the following cases work correctly on both Ruby versions: (int..int).step(10).to_a #=> [100] (int..dur).to_a #=> [100] # Range with non-equivalent values also works fine on different versions: dur2 = 120.seconds (dur..dur2).step(10).to_a #=> [100 seconds, 110 seconds, 120 seconds] (int..dur2).step(10).to_a #=> [100, 110, 120] ``` -- https://bugs.ruby-lang.org/

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[ruby-core:120855] [Ruby master Bug#21104] Net::HTTP connections failing in Ruby >= 3.4.0 on macOS with Happy Eyeballs enabled
by mjt58 (Mike Thompson) 05 May '25

05 May '25

Issue #21104 has been reported by mjt58 (Mike Thompson). ---------------------------------------- Bug #21104: Net::HTTP connections failing in Ruby >= 3.4.0 on macOS with Happy Eyeballs enabled https://bugs.ruby-lang.org/issues/21104 * Author: mjt58 (Mike Thompson) * Status: Open * ruby -v: ruby 3.4.1 (2024-12-25 revision 48d4efcb85) +PRISM [arm64-darwin24] * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- A project I work on recently upgraded Ruby to 3.4.1 from 3.3.5. Following the upgrade, and when running locally on my Mac, all attempts to connect to an external service within the project over http(s) fail. We use `mise` for managing development tool dependencies, including Ruby, and I am using macOS 15.3. For example running something as simple as: ``` require 'net/http' puts Net::HTTP.get(URI('https://bbc.co.uk')) ``` Will fail with the following stack trace: ``` /path/to/.local/share/mise/installs/ruby/3.4.1/lib/ruby/3.4.0/net/protocol.rb:46:in 'OpenSSL::SSL::SSLSocket#connect_nonblock': Connection reset by peer - SSL_connect (Errno::ECONNRESET) from /path/to/.local/share/mise/installs/ruby/3.4.1/lib/ruby/3.4.0/net/protocol.rb:46:in 'Net::Protocol#ssl_socket_connect' from /path/to/.local/share/mise/installs/ruby/3.4.1/lib/ruby/3.4.0/net/http.rb:1736:in 'Net::HTTP#connect' from /path/to/.local/share/mise/installs/ruby/3.4.1/lib/ruby/3.4.0/net/http.rb:1636:in 'Net::HTTP#do_start' from /path/to/.local/share/mise/installs/ruby/3.4.1/lib/ruby/3.4.0/net/http.rb:1625:in 'Net::HTTP#start' from /path/to/.local/share/mise/installs/ruby/3.4.1/lib/ruby/3.4.0/net/http.rb:1064:in 'Net::HTTP.start' from /path/to/.local/share/mise/installs/ruby/3.4.1/lib/ruby/3.4.0/net/http.rb:824:in 'Net::HTTP.get_response' from /path/to/.local/share/mise/installs/ruby/3.4.1/lib/ruby/3.4.0/net/http.rb:805:in 'Net::HTTP.get' from request.rb:2:in '<main>' ``` I tried different versions of Ruby and confirmed that the issue appears with 3.4.0. After reading the release notes for this version, I tried setting `RUBY_TCP_NO_FAST_FALLBACK=1` and this worked, allowing me to work around the problem. This issue has also been encountered by others, please see: https://github.com/rubygems/rubygems/issues/8390 -- https://bugs.ruby-lang.org/

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[ruby-core:116370] [Ruby master Bug#20203] `TestEnumerable` test failures with GCC 14
by vo.x (Vit Ondruch) 28 Apr '25

28 Apr '25

Issue #20203 has been reported by vo.x (Vit Ondruch). ---------------------------------------- Bug #20203: `TestEnumerable` test failures with GCC 14 https://bugs.ruby-lang.org/issues/20203 * Author: vo.x (Vit Ondruch) * Status: Open * Priority: Normal * ruby -v: ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [x86_64-linux] * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- There is ongoing mass rebuild in Fedora and that is first time GCC 14 is used and we observe test failures in `TestEnumerable`. Here are a few examples: ~~~ [ 3000/26419] TestEnumerable#test_transient_heap_sort_bymalloc_consolidate(): unaligned fastbin chunk detected ~~~ ~~~ [ 2455/26535] TestEnumerable#test_transient_heap_sort_bycorrupted size vs. prev_size in fastbins ~~~ ~~~ [ 9716/26532] TestEnumerable#test_any_with_unused_blockdouble free or corruption (fasttop) ~~~ The full logs are accessible [here](https://koji.fedoraproject.org/koji/taskinfo?taskID=112176941). Please drill through `Descendants` and `build.log` -- https://bugs.ruby-lang.org/

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[ruby-core:121413] [Ruby Bug#21193] Inherited callback returns `nil` for `Object.const_source_location`
by eileencodes (Eileen Uchitelle) 20 Apr '25

20 Apr '25

Issue #21193 has been reported by eileencodes (Eileen Uchitelle). ---------------------------------------- Bug #21193: Inherited callback returns `nil` for `Object.const_source_location` https://bugs.ruby-lang.org/issues/21193 * Author: eileencodes (Eileen Uchitelle) * Status: Open * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- Since https://github.com/ruby/ruby/pull/12927 the inherited callback no longer can access the `Object.const_source_location`. A simplified reproduction is the following: ```ruby class A def self.inherited(other) super p Object.const_source_location(other.name) end end class B < A end ``` Prior to this change `Object.const_source_location(other.name)` would return `["test.rb", 8]` and now returns `nil`. Shopify's application uses the `inherited` callback to load configuration classes and since it's unable to find these classes they aren't loaded when they are called. It's not clear if this was intended or if there's a workaround. In chatting with folks at GitHub, they have a similar issue (although that case sounds less straightforward). A more accurate example of what we have (I did strip this down a bunch too): ```ruby def self.inherited(config) return super unless config.superclass == Config if (class_name = config.name) && (config_location = Object.const_source_location(class_name)) && (parent_dirname = File.dirname(config_location[0])) config_dirname = File.join(parent_dirname, "config") config.autoload(:Something, File.join(config_dirname, "something.rb")) end super end ``` Original issue: https://bugs.ruby-lang.org/issues/21143 cc/ @byroot @fxn -- https://bugs.ruby-lang.org/

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[ruby-core:120043] [Ruby master Bug#20919] IO#seek does not clear the character buffer in some cases while transcoding
by javanthropus (Jeremy Bopp) 14 Apr '25

14 Apr '25

Issue #20919 has been reported by javanthropus (Jeremy Bopp). ---------------------------------------- Bug #20919: IO#seek does not clear the character buffer in some cases while transcoding https://bugs.ruby-lang.org/issues/20919 * Author: javanthropus (Jeremy Bopp) * Status: Open * ruby -v: ruby 3.4.0dev (2024-11-28T12:38:16Z master 3af1a04741) +PRISM [x86_64-linux] * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- When transcoding characters, `IO#seek` only clears the internal character buffer if `IO#getc` is called first: ```ruby require 'tempfile' Tempfile.open(encoding: 'utf-8:utf-16le') do |f| f.write('0123456789') f.rewind f.ungetc('a'.encode('utf-16le')) # Character buffer WILL NOT be cleared f.seek(2, :SET) f.getc # => 'a'.encode('utf-16le'); should be '2'.encode('utf-16le') end Tempfile.open(encoding: 'utf-8:utf-16le') do |f| f.write('0123456789') f.rewind # Added a call to #getc here f.getc f.ungetc('a'.encode('utf-16le')) # Character buffer WILL be cleared now f.seek(2, :SET) f.getc # => '2'.encode('utf-16le') end ``` -- https://bugs.ruby-lang.org/

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[ruby-core:120906] [Ruby master Feature#21121] Ractor channels
by luke-gru (Luke Gruber) 14 Apr '25

14 Apr '25

Issue #21121 has been reported by luke-gru (Luke Gruber). ---------------------------------------- Feature #21121: Ractor channels https://bugs.ruby-lang.org/issues/21121 * Author: luke-gru (Luke Gruber) * Status: Open ---------------------------------------- # Motivation: It would be nice be able to `Ractor.yield` in a non-blocking way. Right now a `Ractor.yield` blocks until another ractor calls `r.take` on the yielding ractor. This is bad in the following scenario: ```ruby main = Ractor.current rs = 10.times.map do Ractor.new(main) do |m| ret = [] loop do # do a bunch of work that takes a while, then: begin obj = m.take rescue Ractor::ClosedError end if obj ret << obj else break end end ret end end 50.times do |i| Ractor.yield(i) # this will block until some ractor calls take on us, but it could be a while if there is processing before the `take` call. end main.close_outgoing # Ideally, we could do some work in main ractor that takes some time while the other ractors do their processing. But we're blocking right now # during all the calls to `Ractor.yield`. # Finally, get the results while rs.any? r, obj = Ractor.select(*rs) $stderr.puts "Ractor #{r} got #{obj}" rs.delete(r) end ``` I'd like other ractors to be able to do work in a "fire and forget" kind of way. It isn't possible right now due to the limitations of `Ractor.yield` and `Ractor#take`. What we need is some kind of `yield` buffer so the yielder doesn't block. I propose that Ractor channels would allow this type of programming to work. ## Example using channels: ```ruby chan = Ractor::Channel.new # We could specify buffer size like Go or it could be dynamically growable rs = 10.times.map do Ractor.new(chan) do |c| ret = [] loop do obj, _closed = c.receive # returns `[nil, true]` if `c` is closed and its buffer is empty. It blocks if the buffer is empty and `c` is not closed. if obj ret << obj else break end end ret end end 50.times do |i| chan.send(i) # non-blocking, fills a buffer and only wakes a receiver if there is one end chan.close # Do some processing while ractors do their work. # Then, collect the results while rs.any? r, obj = Ractor.select(*rs) puts "Ractor #{r} got #{obj}" rs.delete(r) end ``` With an API similar to this, we could have "fire and forget" processing with ractors. -- https://bugs.ruby-lang.org/

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[ruby-core:121302] [Ruby master Bug#21183] Ractor error with Prism::VERSION
by getajobmike (Mike Perham) 14 Apr '25

14 Apr '25

Issue #21183 has been reported by getajobmike (Mike Perham). ---------------------------------------- Bug #21183: Ractor error with Prism::VERSION https://bugs.ruby-lang.org/issues/21183 * Author: getajobmike (Mike Perham) * Status: Open * ruby -v: 3.4.1 * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- ``` /Users/mperham/.rubies/ruby-3.4.1/lib/ruby/3.4.0/error_highlight/base.rb:88:in 'ErrorHighlight.prism_find': can not access non-shareable objects in constant Prism::VERSION by non-main Ractor. (Ractor::IsolationError) #<Thread:0x000000011e89fbb0 run> terminated with exception (report_on_exception is true): from /Users/mperham/.rubies/ruby-3.4.1/lib/ruby/3.4.0/error_highlight/base.rb:65:in 'ErrorHighlight.spot' /Users/mperham/.rubies/ruby-3.4.1/lib/ruby/3.4.0/error_highlight/base.rb:88:in 'ErrorHighlight.prism_find' from /Users/mperham/.rubies/ruby-3.4.1/lib/ruby/3.4.0/error_highlight/core_ext.rb:6:in 'ErrorHighlight::CoreExt#generate_snippet' from /Users/mperham/.rubies/ruby-3.4.1/lib/ruby/3.4.0/error_highlight/core_ext.rb:14:in 'ErrorHighlight::CoreExt#detailed_message' : from /Users/mperham/.rubies/ruby-3.4.1/lib/ruby/3.4.0/did_you_mean/core_ext/name_error.rb:24:in 'DidYouMean::Correctable#detailed_message' ``` -- https://bugs.ruby-lang.org/

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[ruby-core:121489] [Ruby Bug#21207] CSV gem not installing in head
by MSP-Greg (Greg L) 14 Apr '25

14 Apr '25

Issue #21207 has been reported by MSP-Greg (Greg L). ---------------------------------------- Bug #21207: CSV gem not installing in head https://bugs.ruby-lang.org/issues/21207 * Author: MSP-Greg (Greg L) * Status: Open * ruby -v: ruby 3.5.0dev (2025-03-31T14:56:29Z master 8a475d15d6) +PRISM * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- The current MinGW workflow in Ruby shows: ```text skipped bundled gems: csv-3.3.4.gem not found in bundled_gems ``` I verified the same locally with both a Windows UCRT build and an Ubuntu build, and the ruby-loco builds are also failing. The current line in `bundled_gems`: ```text csv 3.3.3 https://github.com/ruby/csv e0874e47e2730dacccdb0c534a2cdc073d3bdaea ``` If one changes that to the below, ruby-loco builds pass. ```text csv 3.3.4 https://github.com/ruby/csv e0874e47e2730dacccdb0c534a2cdc073d3bdaea ``` But, Ruby's CI fails in the `./.github/actions/setup/directories` step. -- https://bugs.ruby-lang.org/

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[ruby-core:116555] [Ruby master Feature#20233] pkg-config not working on MSVC
by jmarrec (Julien Marrec) 13 Apr '25

13 Apr '25

Issue #20233 has been reported by jmarrec (Julien Marrec). ---------------------------------------- Feature #20233: pkg-config not working on MSVC https://bugs.ruby-lang.org/issues/20233 * Author: jmarrec (Julien Marrec) * Status: Open * Priority: Normal ---------------------------------------- The PKG_CONFIG variable is not respected in win32/Makefile.sub Also, need to ideally use the `--msvc-syntax` flag (pkgconf 1.4.0, released 7 years ago, adds it). But mostly, I realized that the `try_ldflags` in `lib/mkmf.rb` actually passes these ldflags as the `opt` parameter to the `link_command` function, and not as `ldflags`. While the UNIX systems are forgiving, the MSVC compiler is not, and because the flags are passed before the `-link`, MSVC complains that it ignores it and therefore cannot find the requested library. -- https://bugs.ruby-lang.org/

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[ruby-core:121066] [Ruby master Bug#21141] `Time#utc?` does not work with a timezone object
by nobu (Nobuyoshi Nakada) 09 Apr '25

09 Apr '25

Issue #21141 has been reported by nobu (Nobuyoshi Nakada). ---------------------------------------- Bug #21141: `Time#utc?` does not work with a timezone object https://bugs.ruby-lang.org/issues/21141 * Author: nobu (Nobuyoshi Nakada) * Status: Open * Backport: 3.1: REQUIRED, 3.2: REQUIRED, 3.3: REQUIRED, 3.4: REQUIRED ---------------------------------------- ```ruby require 'timezone' require 'tzinfo' t = Time.now(in: "UTC") t_timezone = Time.now(in: Timezone["UTC"]) t_tzinfo = Time.now(in: TZInfo::Timezone.get("UTC")) p t.utc? #=> true p t_timezone.utc? #=> false p t_tzinfo.utc? #=> false ``` This also affects `strftime("%-z")`. -- https://bugs.ruby-lang.org/

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